Projection display device and remote controller

ABSTRACT

In a projection display device which can be controlled by a remote controller, the remote controller includes a power supply switch button for turning on/off a power supply at a body of the projection display device, a zoom adjuster button for adjusting the zooming of a projection lens, and a focus adjuster button for adjusting the focusing of the projection lens. The projection display device body includes a restricting system which can restrict the adjusting functions of these buttons, so that inadvertent operation of any of these buttons does not affect the projection display device.

INFORMATION

DETAILED DESCRIPTION OF THE INVENTION

This is a Continuation-in-Part of application Ser. No. 09/280,810 filed Mar. 30, 1999, now U.S. Pat. No. 6,345,897. The entire disclosure of the prior application is hereby incorporated by reference herein in its entirety.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

A description will now be given of an embodiment of the present invention with reference to the drawings.

(1) Overall Structure of the Projection Display Device

FIGS. 1 and 2 are schematic perspective views of a projection display device of a first embodiment of the present invention. FIG. 1 illustrates the projection display device , as viewed from the top thereof, while FIG. 2 illustrates the projection display device , as viewed from the bottom thereof.

In the projection display device , the light emitted from a lamp, which is a light source, is separated into the three primary color light beams, the red light beam (R), the green light beam (G), and the blue light beam (B). These color light beams pass through their respective light valves (comprising a modulating system), and are modulated in accordance with image information corresponding thereto. The modulated color light beams are combined by a prism (a color-combining optical system), and the combined color light beams pass through a projection lens in order to be projected onto a projection surface in enlarged form. The component parts of an optical unit , other than the projection lens , are stored in an outside case .

(2) Structure of the Outside Case

The outside case basically comprises an upper case portion , which covers the top side of the projection display device ; a lower case portion which constitutes the bottom side of the projection display device ; and a rear case portion which covers the rear side of the projection display device .

As shown in FIG. 1, a plurality of communicating holes L and R are formed in the left and right sides of the front portion of the top surface of the upper case . An operation switch , for adjusting the quality and focus of the image displayed in the projection display device , is provided at substantially the center portion of the top surface of the upper case . A light receiver , for receiving a light signal emitted from a remote controller (described later), is provided at the right top end of the front face of the upper case .

As shown in FIG. 2, at the bottom surface of the lower case are provided a cover for allowing replacement of a lamp unit (described later) stored in the projection display device ; and an air filter cover with air intake openings for cooling the interior of the projection display device .

As shown in FIG. 2, feet R and L are provided at the left and right corners of the front end of the bottom surface of the lower case ; and a foot C is provided at substantially the center portion of the rear end of the bottom surface of the lower case . When the lever is raised upward, feet R and L can move freely either forward or backward in the direction in which they protrude, thereby allowing the vertical position of the display screen which appears on a projection surface to be varied.

As shown in FIG. 2, at the right side of the rear case is disposed an AC inlet for supplying thereto external electrical power from an outside device. In addition, at the rear case are disposed a terminal group consisting of various input/output terminals, and an air outlet , which is provided adjacent to the terminal group in order to allow the interior air of the projection display device to be discharged.

(3) Internal Structure of the Projection Display Device

FIGS. 3 thorough shows the internal structure of the projection display device . FIGS. 3 and 4 are schematic perspective views of the internal structure of the projection display device ; and FIG. 5 is a vertical sectional view of projection display device .

As shown in these figures, a light source lamp unit , an optical unit constituting an optical system, a circuit board , and a power supply unit are disposed in the outside case .

The light source lamp unit serves as a light source section of the projection display device . Although not shown in the figures, the light source lamp unit comprises a light source, consisting of a light source lamp and a reflector, and a lamp housing for storing the light source therein. The entire light source lamp unit can be taken out by opening the aforementioned cover .

The optical unit , which forms an optical image by optically processing light beams emitted from the light source lamp unit in accordance with image information, comprises an illuminating optical system , a color-separating optical system , a modulating system , and a prism unit serving as a color-combining optical system. The optical component parts of the optical unit other than the modulating system and the prism unit are interposed and supported between an upper light guide and a lower light guide . The upper light guide and the lower light guide are secured to the lower case side by a screw. Further the upper light guide and the lower light guide are similarly fixed to the prism unit side by a screw.

As shown in FIG. 6, the rectangular parallelepiped prism unit is secured, using a screw, to the back face of a head plate , being an integrally molded product of magnesium and constructed so as to have substantially L shaped faces. Color light valves R, G, and B, comprising the modulating system , are secured to the prism unit so as to oppose the three side surfaces of the prism unit . The base end of the projection lens is secured to the front face of the head plate with a screw. Accordingly, as shown in FIG. 5, the head plate to which the prism unit , the modulating system , and the projecting lens are mounted are secured to the lower case with a screw.

The circuit board is provided to control the aforementioned light source lamp, the liquid crystal light valves R, G, and B, and the like. As shown in FIGS. 3 to , the circuit board is disposed above the optical unit , and is electrically connected to the operation switch , which is provided at the upper case , at the front end portion of the projection display device . It is also electrically connected to the terminal group , which is provided at the rear case , at the rear end of the projection display device . A rod-shaped protrusion is formed above the upper light guide , upon which the circuit board is provided. A predetermined gap is formed between the circuit board and the upper light guide in order to allow circulation of cooling air along the circuit board .

The power supply unit , which supplies electrical power for the optical unit and the light source lamp unit , is disposed at a side of the optical unit , and is electrically connected, at the rear end of the projection display device , to the AC inlet at the rear case . The power supply unit also supplies electrical power to the voice output speakers R and L which are disposed in correspondence with the locations of the communicating holes R and L in the upper case , respectively; to a ventilating fan which is provided adjacent to the light source lamp unit ; and to an intake fan provided above the prism unit (described later) and taking in cooling air from the air intake openings . An intake fan is provided at a side face which is opposite to the projection lens of the power supply unit .

(4) Structure of the Optical System

A description will now be given of the structure of the optical system of the projection display device , with reference to FIG. 7 that is a schematic view of the optical system.

As described above, the optical unit comprises illuminating optical system for making uniform the in-plane illuminance distribution of a light beam (W) emitted from the illuminating optical system ; color-separating optical system for separating the light beam emitted from the light source lamp unit into a red light beam (R), a green light beam (G), and a blue light beam (B); modulating system for modulating each of the color light beams, that is the red light beam (R), the green light beam (G), and the blue light beam (B) in accordance with image information corresponding thereto; and prism unit which serves as a color-combining optical system for combining each of the modulated color light beams.

The illuminating optical system includes a reflecting mirror for bending an optical axis of the light beam W emitted from the light source lamp unit so that it extends towards the front of the projection display device ; and a first lens plate and a second lens plate disposed such that the reflecting mirror is interposed therebetween.

The first lens plate is composed of a plurality of rectangular lenses disposed in a matrix arrangement, and divides the light beam from the light source into a plurality of partial light beams and causes the light beams to be gathered and concentrated near the second lens plate .

The second lens plate is composed of a plurality of rectangular lenses disposed in a matrix arrangement, and causes each of the partial light beams emitted from the first lens plate to be superimposed on the light valves R, G, and B (described later) of the modulating system .

Accordingly, the illuminating optical system can substantially uniformly illuminate the liquid crystal light valves R, G, and B, so that the projection display device of the present embodiment can provide a projection image that does not have uneven illuminance.

The color-separating optical system comprises a blue light and green light reflecting dichroic mirror , a green light reflecting dichroic mirror , and a reflecting mirror . At the blue light and green light reflecting dichroic mirror , the blue light beam (B) and the green light beam (G) of the light beam (W) that is coming from the illuminating optical system are reflected at right angles and then travel towards the green light reflecting dichroic mirror .

The red light beam (R) passes through the blue light and green light reflecting dichroic mirror , is reflected at right angles by the reflecting mirror disposed behind the blue light and green light reflecting dichroic mirror , leaves a red light (R) outgoing portion , and travels towards the prism unit . Of the blue light beam (B) and the green light beam (G) reflected by the blue light and green light reflecting dichroic mirror , only the green light beam (G) is reflected at right angles by the green light reflecting dichroic mirror , leaves a green light (G) outgoing portion , and travels towards the color-combining optical system. The blue light beam (B), which has passed through the green light reflecting dichroic mirror , leaves a blue light (B) outgoing portion , and travels towards a relay lens system . In the present embodiment, the optical system is constructed such that the distances from the white light (W) outgoing portion of the illuminating optical system to the light outgoing portions , , and of the color-separating optical system are all the same.

A light-condensing lens and a light-condensing lens are disposed at the red light (R) outgoing portion and the green light (G) outgoing portion of the color-separating optical system , respectively. Accordingly, the red light beam (R) and the green light beam (G), which have left their respective light-outgoing portions, enter their respective condensing lenses and in order to be formed into parallel light beams.

The red light beam (R) and the green light beam (G), which have been formed into parallel light beams, pass through respective light-incoming side polarizing plates R and G, and enter their respective liquid crystal light valves R and G, where they are modulated, in order to add the image information thereon corresponding to these colors. In other words, these liquid crystal light valves are controlled by switching in accordance with the image information associated thereto, by a driving means (not shown), whereby the color light beams, which pass through their respective liquid crystal light valves, are modulated. A conventionally known type of driving means can be used for such a driving means. The blue light beam (B) is led, through the relay lens system , to the liquid crystal light valve B, where it is similarly modulated in accordance with the image information corresponding thereto. For the liquid crystal light valves R, G, and B, a liquid crystal light valve, which utilizes a polysilicon TFT as a switching element, may be used.

The relay lens system comprises a light condensing lens disposed at the light-outgoing side of the blue light (B) outgoing portion ; a light-incoming side reflecting mirror ; a light-outgoing side reflecting mirror ; an intermediate lens disposed between these reflecting mirrors; and a light-condensing lens disposed in front of the liquid crystal light valve B. The blue light beam (B), which has left the light-condensing lens , passes through a light-incoming side polarizing plate B, and enters the liquid crystal light valve B that modulates it. The length of the optical path, that is the distance from the light source lamp to a liquid crystal panel, is longest for the blue light beam (B), so that the loss of blue light is largest. However, the relay lens system reduces the amount of loss of blue light.

The light beams, which have been modulated as a result of passing through their respective liquid crystal light valves R, G, and B, pass through their respective light-outgoing side polarizing plates R, G, and B, and enter the prism unit , where they are combined together. This results in the formation of a color image, which, through the projection lens , is projected in enlarged form onto a projection surface disposed at a predetermined location.

While the preferred embodiment is described in terms of a liquid crystal light valve, one skilled in the art would recognize that other optical systems are available, such as reflection type modulators including DMDs, or any other optical systems that perform the function of forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source.

(5) Structure of the Operation Switch

As shown in FIG. 8, the operation switch , provided at the top face of the outside case , has a body side power supply switching button , a body side zoom adjuster button , a body side focus adjuster button , and a body side tracking adjusting portion which comprises the image adjuster portion, and a body side input switching button . The body side tracking adjusting portion has tracking adjuster buttons and for manually performing horizontal synchronization adjustments of the display screen that appears on the projection surface ; V synchronization adjuster buttons and for manually performing vertical synchronization adjustments; and auto format button for automatically performing these image adjustments.

In addition, the operation switch has a body side menu button , which switches the setting screens, for setting the projection display device in various ways, over the display on the projection surface ; a body side blank button for blocking an optical image to be formed based on the input image signal in order to show a blanked screen of a predetermined color; a body side re-size button for adjusting the size of the display screen; and a body side voice output adjusting portion for outputting a voice from the speakers R and L. The body side voice output adjusting portion has a body side volume button , for making voice adjustments, and a body side mute button . As described above, such an operation switch is electrically connected to the circuit board , which has conventionally known types of circuits used for providing each of the button functions.

(6) Structure of the Remote Controller

As shown in FIG. 9, the remote controller , for controlling the projection display device , has a power supply switching button , a zoom adjuster button , a focus adjuster button , a video switching button and a computer switching button , forming an image adjusting portion, and an auto format button . The remote controller also has a menu button ; a pointer operation button , for operating the mouse pointer on the screen that appears on the projection surface , when an image signal is input from a computer to the projection display device ; a click button ; a blank button ; a re-size button , a freeze button for bringing, for example, a video motion picture still; a volume button ; a mute button ; and a custom button for calling out CUSTOM SET set at the projection display device . The menu button , the blank button , the re-size button , the volume button , and the mute button provide essentially the same functions as the corresponding buttons on the body of the projection display device .

Although not shown in FIG. 9, these buttons are connected to a conventionally known type of light signal generating circuit accommodated in the remote controller . Through the light signal generating circuit, a light signal is output from a light-emitting portion at the top end side face of the remote controller of FIG. 8, in accordance with an instruction produced as a result of pressing one of the aforementioned buttons. The light signal is then received by the light-receiving portion of the projection display device , whereby the projection display device is operated without using wires.

In the case where the power supply of the projection display is cut off, pressing the power supply switching button once causes the light source lamp in the light source lamp unit to be turned on, and pressing it again causes it to be turned off. Thereafter, the ventilating fan and the intake fan are operated for a certain period of time in order to clean the inside of the projection display device .

By continuously pressing either one of the + side or the − side of the zoom adjuster button and either one of the + side or the − side of the focus adjuster button , the zooming or the focusing of the projection lens can be varied continuously. By releasing the buttons or when the predetermined zooming position or focusing position is reached, the zooming adjustment or the focusing adjustment can be stopped. The + and − sides are provided for the zoom adjuster button and for the focus adjuster button so that zooming adjusting operations and focusing adjusting operations can be reversed.

When the video switching button is pressed, an optical image is formed based on the input image signal coming from a video input terminal (not shown) of the projection display device in order to display it on the projection surface ; and when the computer image button is pressed, an optical image is formed based on the input image signal coming from a RGB terminal of the projection display device . The input and output terminal group , provided at the aforementioned rear case , can be simultaneously connected to a plurality of computers. When the computer image button is pressed a plurality of times, switching between computers, which output image signals, can be performed in accordance with the number of pressing operations.

(7) Power Supply Switch Restricting System, Zooming/Focusing Adjusting Function Restricting System, and Image Adjusting Function Restricting System

The projection display device includes a power supply switch restricting system which can restrict the function of the power supply switch button of the remote controller ; a zooming/focusing function restricting system which can restrict the function of the zoom adjuster button and/or the function of the focus adjuster button of the remote controller ; and an image adjusting function restricting system which can restrict the function of the video switching button , the function of the computer switching button , and the function of the auto format button of the remote controller . These restricting systems are provided on the circuit board , and comprise switching elements interposed between conventionally known types of circuits, used for executing these functions, and the light-receiving portion . Switching between restricting states of each of the restricting systems can be performed based on the state of the switching element associated thereto.

(8) Procedure for Switching the Restricting State of Each Restricting System

A description will now be given of the procedure for switching the restricting state of each restricting system of the projection display device , using the zoom adjuster button and the focus adjuster button as examples.

(a) When the light source lamp of the projection display device is turned on by pressing the body side power supply switch button of the projection display device , or when the body side menu button is pressed while the light source lamp is lit, a menu screen for performing various projection display device settings appears, as shown in FIG. . As can be seen in FIG. 10, on the menu screen of the present embodiment are also displayed, along with the menu, such information as the horizontal synchronization frequency, the vertical synchronization frequency, the amount of time the light source lamp is used, and the name of the computer which is the origin of the image display currently being shown. It is possible, therefore, to confirm whether or not the image signal, input from a computer or the like, matches the projection display device setting, by looking at the menu screen.

(b) From the menu, CUSTOM is selected, and from the custom setting menu, REMOTE CONTROLLER SETTING is selected. When selecting from the menu, the body side tracking adjusting portion of the projection display device is used. More specifically, vertical movement on the menu screen is achieved by using the V synchronization adjuster buttons and , shown in FIG. 8, horizontal movement on the menu screen is achieved by using the tracking adjuster buttons and , shown in FIG. 8, and selection from the menu screen is achieved by using the auto format button disposed at the center of the body side tracking adjusting portion .

(c) When REMOTE CONTROLLER SETTING is selected, the remote controller setting menu is displayed (not shown). Then, when ZOOM/FOCUS LOCK is selected from this menu, information regarding the lock state of the zooming/focusing adjusting function of the remote controller is displayed, as shown in FIG. . When the user wants to lock the zooming/focusing adjusting function of the remote controller , by pressing the V synchronization adjuster buttons and , the screen is set as shown in FIG. . On the other hand, when the user wants to maintain the zoom•focus function of the remote controller , by operating the V synchronization adjuster buttons and , the screen is set as shown in FIG. .

(d) Thereafter, when the setting of the remote controller is executed by using the auto format button , the screen changes from the REMOTE CONTROLLER SETTING screen to the menu screen. When the body side menu button is pressed, the screen changes to the ordinary display screen based on the image signal from the computer or the like.

(e) FOCUS/ZOOM displayed on the screens of FIGS. 11 and 12 can also be changed, by pressing the tracking adjuster buttons , , and moving the cursor to the right portion of the screen in FIGS. 11 and 12, and subsequently pressing the V synchronization adjuster buttons , . More specifically, the information indicating the lock state of the zooming adjusting function/the focusing adjusting function can be displayed in the following three ways: FOCUS/ZOOM (which means that the focusing adjusting function and the zooming adjusting function are both locked), FOCUS (which means only the focusing adjusting function is locked), and ZOOM (which means that only the focusing adjusting function is locked).

(f) In addition to the ZOOM/FOCUS LOCK menu, the POWER SUPPLY SWITCH LOCK menu and the TRACKING/V SYNCHRONIZATION ADJUSTMENT LOCK menu are also provided on the REMOTE CONTROLLER SETTING screen described above. The power supply switch function and the tracking/V synchronization adjusting functions can be locked by the same procedures as those used to lock the focusing adjusting function and the zooming adjusting function. Therefore, the procedures for locking these functions will not be described.

(9) Advantages of the First Embodiment

(a) The projection display device is provided with a power supply switch restricting system, a zooming/focusing adjusting function restricting system, and an image adjusting function restricting system. Selections can be made from menus by operating the body side tracking adjusting portion , thereby allowing the on/off state of the power supply switch, the zooming adjusting function, the focusing adjusting function, the tracking adjusting function, and the like, of the remote controller to be restricted as required. When the on/off state of the power supply switch, the zooming adjusting function, the focusing adjusting function, and the tracking adjusting function are restricted, the various settings of the projection display device will not be disturbed, even when any one of the adjuster buttons through on the remote controller are inadvertently pressed by the person making a presentation.

(b) By operating the buttons to of the body side tracking adjusting portion , various adjusting functions can be restricted by setting ZOOM/FOCUS, ZOOM, or FOCUS, making it possible to easily set the state of restriction of the remote controller from the projection display device .

(c) Since the state of restriction of any of the button functions on the remote controller can be switched on the screen, such as at the setting screens shown in FIGS. 10 to , the setting of the remote controller can be confirmed by more than one person. In addition, the setting of the remote controller can be changed by pressing the body side menu button , the menu button , or the like, to call out the setting screen, as required. Therefore, even when there are many people of, for example, an academic society making presentations, the setting of the remote controller can be changed based on the demands of the persons making the presentation.

(10) Structure of the Projection Display Device of the Second Embodiment and Advantages Thereof

A description will now be given of the second embodiment of the projection display device in accordance with the present invention. In the following description, similar or corresponding parts to those of the projection display device of the first embodiment are not described.

In the first embodiment, the body of the projection display device is provided with a power supply switch restricting system, a zooming/focusing adjusting function restricting system, and an image adjusting function restricting system.

The second embodiment is different from the first embodiment in respect of that the remote controller is provided with a zooming/focusing adjusting function restricting system, and an image adjusting function restricting system. In addition, in the second embodiment, the remote controller is provided with a body side adjusting function restricting system which restricts the functions of the operation buttons provided at the body.

The structure of the body of the projection display device of the second embodiment is similar to that of the body of the projection display device of the first embodiment of FIGS. 1 to , so that it will not be described below.

As shown in FIG. 13, the remote controller used to control the body of the projection display device of the second embodiment is essentially the same as the remote controller used for controlling the projection display device body of the first embodiment.

Although not shown in FIG. 13, the remote controller is provided with a power supply switch restricting system for restricting the function of the power supply switch button ; a zooming/focusing adjusting function restricting system for restricting the function of a zoom adjuster button and/or the function of a focus adjuster button ; an image adjusting function restricting system for restricting the function of computer switching buttons and and the function of an auto format button ; and a body side adjusting function restricting system for restricting the adjusting functions of all of the buttons of the operation switch on the projection display device. These restricting systems are provided on a circuit board disposed in the remote controller . The body side adjusting function restricting system is formed including a light signal outputting circuit for outputting two types of signals used to switch the state of restriction of the body side adjusting functions, while the restricting systems other than the body side adjusting function restricting system is formed by a circuit including a switching element disposed between circuits of a conventionally known type, used to provide the various button functions, and the light signal outputting circuit.

The restricting state of any one of the restricting systems can be switched by the remote controller by the same switching procedures used to switch the restricting state of each of the restricting systems in the first embodiment. However, since the switching of the restricting state is performed using the remote controller , the types of buttons to be operated are slightly different. More specifically, when selecting from a menu using the remote controller , a pointer operation button is pressed to select the section to be changed, and, then, a click button is clicked once to display the settable patterns at the section of the menu. After moving the cursor to the desired pattern by pressing the pointer operation button once again, the click button is clicked to set the desired pattern. Thereafter, procedures which are substantially the same as the switching procedures carried out in the first embodiment are performed to change the restricting state of any one of the restricting systems including the body side adjusting function restricting system. It is to be noted that the state of restriction of the body side adjusting functions can be changed by selecting BODY SIDE ADJUSTING FUNCTION SET from the custom setting menu of the menu screen.

In addition to the advantages of the projection display device of the first embodiment, the projection display device of the second embodiment has the following advantages.

(d) The remote controller is provided with a body side adjusting function restricting system which can restrict the adjusting function of the buttons of the operation switch at the body of the projection display device. Therefore, with the body side buttons of the operation switch locked, when a presenter makes a presentation while adjusting the display screen using the remote controller , the display screen remains, for example, correctly zoomed and focused, even when an outsider incorrectly operates any of the body side buttons of the operation switch.

(11) Modifications

The present invention is not limited to the above-described embodiments, so that various modifications can be made.

Although in the first embodiment, the restricting state of the power supply switch restricting system, the zooming/focusing adjusting function restricting system, and the image adjusting function restricting system are switched at the menu setting screen shown in FIGS. 10 to , the function restricting state may be switched by providing a switch on the projection display device , which is designed specifically for switching the restricting state of the restricting systems. The restricting state may also be switched by simultaneously operating the adjuster buttons to of the operation switch on the projection display device .

Although a plurality of switches may be specifically designed in correspondence with the different restricting systems, it is preferable to provide one switch, for switching a function restricting state, on the projection display device, and using this switch in combination with any of the other adjuster buttons on the projection display device, such as the power supply switch button, the focus adjuster button, the zoom adjuster button, or the auto format button, in order to switch the function restricting state of each of the restricting systems.

An example of the case that the adjuster buttons to of the operation switch is operated at the same time is described as follows. When the restricting state of the zooming/focusing adjusting function restricting system is changed, the zoom adjuster button and the focus adjuster button of the remote controller can be locked by pressing at the same time the body side zooming adjuster button or the body side focusing adjuster button , as well as the body side volume button and the mute button .

When a switch designed specifically for changing the function restricting state of each restricting systems is provided at the projection display device, and the restricting state of the remote controller is set at the projection display device, it is possible to make this restricting state not to be subsequently switched by the remote controller, so that even when the remote controller is used by a large and an unspecified number of users in, for example, presentations given by an academic society, confusion will not arise from accidental changes made in the restricting state.

When the restricting state of the zooming/focusing adjusting function restricting system is switched by operating at the same time the body side zoom adjuster button or the body side focus adjuster button and the adjuster buttons and , the projection display device does not require a separate switch specifically designed for changing the restricting state, making it possible to simplify the structure of the projection display device . In addition, the restricting state can be switched by simply operating at the same time the body side zoom adjuster button or the body side focus adjuster button and the adjuster buttons and , so that the procedure of calling out the setting menu and changing the setting of the remote controller can be eliminated, thereby allowing the restricting state to be switched quickly. Further, the instruction for switching the state of restriction of the zooming adjusting function and/or the focusing adjusting function is not displayed at the projection display device , the state of restriction can be switched by using such as hidden commands, so that even when the remote controller is used by a large and an unspecified number of users, the restricting state cannot be easily changed. Therefore, when the projection display device is used at, for example, an exhibition, and someone plays around with the remote controller , the information or image of the projection display device will remain properly zoomed and focused.

Although in the second embodiment, the restricting state of the power switch restricting system, the restricting state of the zooming/focusing adjusting function restricting system, the restricting state of the image adjusting function restricting system, and the restricting state of the body side adjusting function restricting system are switched at the menu setting screen, the restricting state of any one of the systems can be switched by a specifically designed switch that is provided on the remote controller , shown in FIG. . The specifically designed switch is used in combination with the adjuster buttons to of the remote controller in order to change the restricting state. For example, when the state of restriction of the zoom adjuster button is to be switched, the specifically designed switch is operated while pressing the zoom adjuster button .

Since the restricting state of the remote controller can be changed using the specifically designed switch , anyone making a presentation can easily change the restricting state whenever it is necessary even during the presentation.

In addition to selecting from a menu screen and using the specifically designed switch shown in FIG. 12, the restricting state of any one of the restricting systems can be changed by operating at the same time some of the adjuster buttons to of the remote controller . When the restricting state is changed is this way, operational effects that are similar to those obtained when the body side adjuster buttons are operated at the same time can be obtained. The structures and forms are not limited to those described in the embodiments above, so that other structures and forms may be used within the scope that allows the object of the present invention to be achieved.

In other exemplary embodiments according to the systems and methods of the invention the optical system of the display device may be a digital micromirror device (DMD) display as disclosed by U.S. Pat. No. 5,592,188 herein incorporated in its entirety by reference.

Referring to FIG. 14, there is illustrated an overall system diagram of a digital micromirror device (DMD) display system wherein the light from a source is applied through a first condenser lens and through a color wheel , which is rotating about 60 cycles, or Hertz, or 60 frames per second. The light passing through the color wheel passes through a second condenser lens onto a DMD chip . The DMD chip includes an array of tiny mirrored elements, or micromirrors, where each mirror element is hinged by a torsion hinge and support posts above a memory cell of a CMOS STATIC RAM, as shown in FIG. . The movable micromirror tilts into an on or off state by electrostatic forces based on data in the cell. The tilt of the mirror is either plus or minus, for example 10° (off) to modulate the light that is incident on the surface. As shown, the light reflected from any of the mirrors may pass through a projection lens and create images on a large screen . As stated previously, the portion of time during which the mirror remains in the on state determines the shade of gray. The time duration which the cell is in the positive direction, or on, is represented by 8 bits of data sent to that cell. The color wheel is divided into for example red, green and blue sectors. In the color wheel example for red, green, and blue the maximum red would be when the red would be reflecting the maximum period of time. That is, the micromirror would be in the on position when the light was passing through essentially the entire time the wheel is in the red sector. The same would be true for the other two colors. The minimum would be where the micromirror would be in the off state through the entire period when the color wheel was in the color position. The intensity resolution in this pulse width modulation (PWM) is limited by the response time of the digital DMD mirrors. The total time available to display a color frame and the least time required to turn a mirror to the “on” state and back to the “off” state define the resolution of the present systems. In the arrangement for the 8-bits, the most significant bit is the seventh bit with that bit representing the longest “on” time, the sixth bit then representing the next longest “on” time, and the fifth bit representing the third longest “on” time, etc. The least significant, or 0 bit, would represent the shortest period of time. For a sequential color DMD system five milliseconds is available for a color frame. For 8-bit binary PWM, the last significant bit (0 bit on only), the shortest period would be on for about 19.6 microseconds. The mirror off/on time would have to be less and 19.6 microseconds to implement this scheme with the current method.

In other exemplary embodiments according to the systems and methods of the invention the optical system may be a projection system as disclosed in U.S. Pat. No. 6,113,239 herein incorporated by reference in its entirety.

This optical system is shown generally at in FIG. . System includes a light source and a projection system . Projection system includes two dichroic filters (DF) , , and two polarizing beam splitters (PBS) , , to split up the incoming white light from light source into RGB components before directing each light beam component to a specific light valve, or liquid crystal display (LCD), , , . LCDs , , each provide a light-component-specific image, which is illuminated by the light beam component and reflected from the face of the LCD, carrying a color image component. The color image components are then recombined, and the reflected light is directed to projection lens

A requirement for proper operation of projection system is that the input illumination is pre-filtered and polarized so that the green and blue distributions are s-polarized and the red distribution is p-polarized. As is known to those of skill in the art, s-polarized light has its electric field vector linearly polarized perpendicular to the plane of the figure and p-polarized light has its electric field vector linearly polarized in the plane of the figure.

DFs and are arranged in a substantially straight line within projection system , as are PBSs , . The DFs and PBSs are arranged to intersect their respective substantially straight lines adjacent the midpoints thereof in a normal relationship. Put another way, the optics are arranged in a substantially “X” shaped configuration, with the filters and beam splitters each joined adjacent an edge thereof. Although, in FIG. 17, it appears that there is an offset between DF and DR , it will be appreciated that the reflective coatings are disposed on one side only of the filter, i.e., as viewed in FIG. 17, DF is coated on its upper surface while DF is coated on its lower surface. The coated surfaces line up in the “X” shaped configuration.

In projection system , the incoming light first encounters blue-transmitting dichroic filter . The s-polarized blue light is transmitted while the s-polarized green light and p-polarized red light are reflected. The blue light passes on to PBS where, because it is s-polarized, it reflects to first LCD light valve , which is a blue light modulator. LCD modulates the polarization of the light by rotating the direction of polarization in proportion to the electrical signals provided to the device. The reflected light is thus a combination of s-polarized and p-polarized light. When the reflected light returns to PBS , the s-polarized portion again reflects back toward the incoming illumination and the p-polarized portion is transmitted on to blue-reflecting dichroic . The blue light will reflect off second dichroic filter and through projection lens , to an image display, such as a projection screen.

The green and red light that is reflected from first dichroic filter propagates to second PBS . The p-polarized red light is transmitted through PBS to second LCD , a red light modulator, while the s-polarized green light is reflected to third LCD , a green light modulator. LCDs , modulate the light distributions, and after the reflected distributions return to PBS , only the p-polarized portion of the green light and the s-polarized portion of the red light pass over to blue-reflecting dichroic filter . The other portions of these two distributions are again returned toward the incoming illumination. Because dichroic filter transmits both red and green, these two distributions are combined with the blue light from the other path and pass through projection lens to the image display. Dichroic filter acts as an image recombiner in this embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an external perspective view of an embodiment of the projection display device in accordance with the present invention, as viewed from the top side of the projection display device;

FIG. 2 is an external perspective view of an embodiment of the projection display device in accordance with the present invention, as viewed from the bottom side of the projection display device;

FIG. 3 is a perspective view of the internal structure of the projection display device of an embodiment in accordance with the present invention;

FIG. 4 is a perspective view of an optical system in the interior of the projection display device of an embodiment in accordance with the present invention;

FIG. 5 is a vertical sectional view of the internal structure of the projection display device of an embodiment in accordance with the present invention;

FIG. 6 is an external perspective view of a modulating system, a color-combining optical system, and a projection lens, used in an embodiment of the projection display device in accordance with the present invention;

FIG. 7 is a schematic view of the structure of the optical system of the projection display device of an embodiment in accordance with the present invention;

FIG. 8 is a partial front view showing the layout of the buttons of the operation switch, which is provided at the body of the projection display device, of an embodiment in accordance with the present invention;

FIG. 9 is a front view of a remote controller of the projection display device of an embodiment in accordance with the present invention;

FIG. 10 illustrates a menu displayed on the projection display device of an embodiment in accordance with the present invention;

FIG. 11 illustrates a screen used for setting the state of restriction of the function of a zoom adjuster button and the function of a focus adjuster button of a remote controller, in an embodiment of the present invention;

FIG. 12 illustrates a screen used for setting the state of restriction of the function of the zoom adjuster button and the function of a focus adjuster button of the remote controller, in an embodiment of the present invention;

FIG. 13 is a front view of a remote controller, relative to a second embodiment of the present invention;

FIG. 14 is a front view of a remote controller, which is a modification of the remote controller described in the second embodiment of the present invention;

FIG. 15 is an overall system diagram of a sequential color digital micromirror display system;

FIG. 16 is a sketch of a micromirror element in FIG. 15; and

FIG. 17 is a schematic representation of a reflective light valve projection system.

CLAIMS

1. A projection display device controllable by a remote controller, the projection display device including a light source, optical image forming means for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a power supply switch restricting system for restricting a function of the power supply switch portion of the remote controller which causes a power supply to be turned on/off.

2. The projection display device according to claim 1, the optical image forming means being light valves.

3. The projection display device according to claim 1, the optical image forming means being reflective light valves.

4. The projection display device according to claim 1, the optical image forming means being a digital micromirror device.

5. The projection display device according to claim 1, further comprising a setting screen displaying system for displaying a setting screen used for setting the projection display device, switching between restricting states of the power supply switch restricting system being performable by selecting from a setting menu on the setting screen.

6. The projection display device according to claim 1, further comprising a switch specifically designed for switching between restricting states of the power supply switch restricting system.

7. A projection display device controllable by a remote controller, the projection display device including a light source, an optical image forming means for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens; a focusing adjusting portion for performing focusing adjustments on the projection lens; and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or for restricting a function of the focusing adjusting portion.

8. The projection display device according to claim 7, the optical image forming means being light valves.

9. The projection display device according to claim 7, the optical image forming means being reflective light valves.

10. The projection display device according to claim 7, the optical image forming means being a digital micromirror device.

11. The projection display device according to claim 7, further comprising a setting screen displaying system for displaying a setting screen used for setting the projection display device, switching between restricting states of the zooming/focusing adjusting function restricting system being performable by selecting from a setting menu on the setting screen.

12. The projection display device according to claim 7, further comprising a body side zooming adjusting portion and a body side focusing adjusting portion; switching between restricting states of the zooming/focusing adjusting function restricting system being performable by operating the body side zooming adjusting portion or the body side focusing adjusting portion and another adjusting portion at the same time.

13. The projection display device according to claim 7, further comprising a switch specifically designed for switching between restricting states of the zooming/focusing adjusting function restricting system.

14. A projection display device controllable by a remote controller, the projection display device including a light source, an optical image forming means for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: an image adjusting function restricting system for restricting a function of the image adjusting portion of the remote controller for adjusting the optical image.

15. The projection display device according to claim 14, the optical image forming means being light valves.

16. The projection display device according to claim 14, the optical image forming means being reflective light valves.

17. The projection display device according to claim 14, the optical image forming means being a digital micromirror device.

18. The projection display device according to claim 14, further comprising a setting screen displaying system for displaying a setting screen used for setting the projection display device, switching between restricting states of the image adjusting function restricting system being performable by selecting from a setting menu on the setting screen.

19. The projection display device according to claim 14, further comprising a switch specifically designed for switching between restricting states of the image adjusting function restricting system.

20. A remote controller for controlling a body of a projection display device, the projection display device including a light source, an optical image forming means for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a power supply switch portion for turning on/off a power supply of the projection display device; and a power supply switch restricting system for restricting a function of the power supply switch portion.

21. The remote controller according to claim 20, the optical image forming means being light valves.

22. The remote controller according to claim 20, the optical image forming means being reflective light valves.

23. The remote controller according to claim 20, the optical image forming means being a digital micromirror device.

24. The remote controller according to claim 20, the body of the projection display device comprising a setting screen displaying system for displaying a setting screen used for setting the body of the projection display device and, switching between restricting states of the power supply switch restricting system being performable by selecting from a setting menu on the setting screen.

25. The remote controller according to claim 20, further comprising a switch specifically designed for switching between restricting states of the power supply switch restricting system.

26. A remote controller for controlling a body of a projection display device, the projection display device including a light source, an optical image forming means for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens, a focusing adjusting portion for performing focusing adjustments on the projection lens, and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or a function of the focusing adjusting portion.

27. The remote controller according to claim 26, the optical image forming means being light valves.

28. The remote controller according to claim 26, the optical image forming means being reflective light valves.

29. The remote controller according to claim 26, the optical image forming means being a digital micromirror device.

30. The remote controller according to claim 26, the body of the projection display device comprising a setting screen displaying system for displaying a setting screen used for setting the projection display device, and switching between restricting states of the zooming/focusing adjusting function restricting system being performable by selecting from a setting menu on the setting screen.

31. The remote controller according to claim 26, switching between restricting states of the zooming/focusing adjusting function restricting system being performable by operating the zooming adjusting portion or the focusing adjusting portion and another adjusting portion at the same time.

32. The remote controller according to claim 26, further comprising a switch specifically designed for switching between restricting states of the zooming/focusing adjusting function restricting system.

33. A remote controller for controlling a body of a projection display device, the projection display device including a light source, an optical image forming means for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: an image adjusting portion for adjusting the optical image; and an image adjusting function restricting system for restricting a function of the image adjusting portion.

34. The remote controller according to claim 33, the optical image forming means being light valves.

35. The remote controller according to claim 33, the optical image forming means being reflective light valves.

36. The remote controller according to claim 33, the optical image forming means being a digital micromirror device.

37. The remote controller according to claim 33, the body of the projection display device comprising a setting screen displaying system for displaying a setting screen used for setting the projection display device, and switching between restricting states of the image adjusting function restricting system being performable by selecting from a setting menu on the setting screen.

38. The remote controller according to claim 33, further comprising a switch specifically designed for switching between restricting states of the image adjusting function restricting system.

39. A remote controller for controlling a body of a projection display device, the projection display device comprising a light source, an optical image forming means for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the body of the projection display device comprising: a body side power supply switch portion for turning on/off a power supply of the body of the projection display device; a body side zooming adjusting portion for performing zooming adjustments on the projection lens; a body side focusing adjusting portion for performing focusing adjustments on the projection lens; and a body side image adjusting portion for adjusting the optical image, the remote controller comprising a body side adjusting function restricting system for restricting the adjusting function of at least one of the body side power supply switch portion, the body side zooming adjusting portion, the body side focusing adjusting portion, and the body side image adjusting portion.

40. The remote controller according to claim 39, the optical image forming means being light valves.

41. The remote controller according to claim 39, the optical image forming means being reflective light valves.

42. The remote controller according to claim 39, the optical image forming means being a digital micromirror device.

43. The remote controller according to claim 39, the body of the projection display device comprising a setting screen displaying system for displaying a setting screen used for setting of the projection display device, and switching between restricting states of the body side adjusting function restricting system being performable by selecting from a setting menu on the setting screen.

44. The remote controller according to claim 39, further comprising a switch specifically designed for switching between restricting states of the body side adjusting function restricting system.

45. A projection display device controllable by a remote controller, the projection display device including a light source, light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a power supply switch restricting system for restricting a function of the power supply switch portion of the remote controller which causes a power supply to be turned on/off.

46. A projection display device controllable by a remote controller, the projection display device including a light source, light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens; a focusing adjusting portion for performing focusing adjustments on the projection lens; and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or for restricting a function of the focusing adjusting portion.

47. A projection display device controllable by a remote controller, the projection display device including a light source, light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: an image adjusting function restricting system for restricting a function of the image adjusting portion of the remote controller for adjusting the optical image.

48. A remote controller for controlling a body of a projection display device, the projection display device including a light source, light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a power supply switch portion for turning on/off a power supply of the projection display device; and a power supply switch restricting system for restricting a function of the power supply switch portion.

49. A remote controller for controlling a body of a projection display device, the projection display device including a light source, light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens, a focusing adjusting portion for performing focusing adjustments on the projection lens, and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or a function of the focusing adjusting portion.

50. A remote controller for controlling a body of a projection display device, the projection display device including a light source, light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: an image adjusting portion for adjusting the optical image; and an image adjusting function restricting system for restricting a function of the image adjusting portion.

51. A remote controller for controlling a body of a projection display device, the projection display device comprising a light source, light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the body of the projection display device comprising: a body side power supply switch portion for turning on/off a power supply of the body of the projection display device; a body side zooming adjusting portion for performing zooming adjustments on the projection lens; a body side focusing adjusting portion for performing focusing adjustments on the projection lens; and a body side image adjusting portion for adjusting the optical image, the remote controller comprising a body side adjusting function restricting system for restricting the adjusting function of at least one of the body side power supply switch portion, the body side zooming adjusting portion, the body side focusing adjusting portion, and the body side image adjusting portion.

52. A projection display device controllable by a remote controller, the projection display device including a light source, reflective light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a power supply switch restricting system for restricting a function of the power supply switch portion of the remote controller which causes a power supply to be turned on/off.

53. A projection display device controllable by a remote controller, the projection display device including a light source, reflective light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens; a focusing adjusting portion for performing focusing adjustments on the projection lens; and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or for restricting a function of the focusing adjusting portion.

54. A projection display device controllable by a remote controller, the projection display device including a light source, reflective light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: an image adjusting function restricting system for restricting a function of the image adjusting portion of the remote controller for adjusting the optical image.

55. A remote controller for controlling a body of a projection display device, the projection display device including a light source, reflective light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a power supply switch portion for turning on/off a power supply of the projection display device; and a power supply switch restricting system for restricting a function of the power supply switch portion.

56. A remote controller for controlling a body of a projection display device, the projection display device including a light source, reflective light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens, a focusing adjusting portion for performing focusing adjustments on the projection lens, and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or a function of the focusing adjusting portion.

57. A remote controller for controlling a body of a projection display device, the projection display device including a light source, reflective light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: an image adjusting portion for adjusting the optical image; and an image adjusting function restricting system for restricting a function of the image adjusting portion.

58. A remote controller for controlling a body of a projection display device, the projection display device comprising a light source, reflective light valves for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the body of the projection display device comprising: a body side power supply switch portion for turning on/off a power supply of the body of the projection display device; a body side zooming adjusting portion for performing zooming adjustments on the projection lens; a body side focusing adjusting portion for performing focusing adjustments on the projection lens; and a body side image adjusting portion for adjusting the optical image, the remote controller comprising a body side adjusting function restricting system for restricting the adjusting function of at least one of the body side power supply switch portion, the body side zooming adjusting portion, the body side focusing adjusting portion, and the body side image adjusting portion.

59. A projection display device controllable by a remote controller, the projection display device including a light source, a digital micromirror device for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a power supply switch restricting system for restricting a function of the power supply switch portion of the remote controller which causes a power supply to be turned on/off.

60. A projection display device controllable by a remote controller, the projection display device including a light source, a digital micromirror device for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens; a focusing adjusting portion for performing focusing adjustments on the projection lens; and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or for restricting a function of the focusing adjusting portion.

61. A projection display device controllable by a remote controller, the projection display device including a light source, a digital micromirror device for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the projection display device comprising: an image adjusting function restricting system for restricting a function of the image adjusting portion of the remote controller for adjusting the optical image.

62. A remote controller for controlling a body of a projection display device, the projection display device including a light source, a digital micromirror device for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a power supply switch portion for turning on/off a power supply of the projection display device; and a power supply switch restricting system for restricting a function of the power supply switch portion.

63. A remote controller for controlling a body of a projection display device, the projection display device including a light source, a digital micromirror device for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: a zooming adjusting portion for performing zooming adjustments on the projection lens, a focusing adjusting portion for performing focusing adjustments on the projection lens, and a zooming/focusing adjusting function restricting system for restricting a function of the zooming adjusting portion and/or a function of the focusing adjusting portion.

64. A remote controller for controlling a body of a projection display device, the projection display device including a light source, a digital micromirror device for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the remote controller comprising: an image adjusting portion for adjusting the optical image; and an image adjusting function restricting system for restricting a function of the image adjusting portion.

65. A remote controller for controlling a body of a projection display device, the projection display device comprising a light source, a digital micromirror device for forming an optical image in accordance with image information as a result of optically processing light beams emitted from the light source, and a projection lens for projecting the optical image in enlarged form, the body of the projection display device comprising: a body side power supply switch portion for turning on/off a power supply of the body of the projection display device; a body side zooming adjusting portion for performing zooming adjustments on the projection lens; a body side focusing adjusting portion for performing focusing adjustments on the projection lens; and a body side image adjusting portion for adjusting the optical image, the remote controller comprising a body side adjusting function restricting system for restricting the adjusting function of at least one of the body side power supply switch portion, the body side zooming adjusting portion, the body side focusing adjusting portion, and the body side image adjusting portion.

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