JP3467561B2 - Projection display device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection type display for optically processing a light beam emitted from a light source lamp unit to form an optical image corresponding to image information, and enlarging and projecting the optical image on a screen. It relates to the device. More specifically, the present invention relates to a pattern display technique during focus adjustment and zoom adjustment in such a projection display device.

[0002]

2. Description of the Related Art A projection display device basically comprises a light source lamp unit, an optical lens unit for optically processing a light beam emitted from the light source lamp unit so that a color image corresponding to video information can be combined. It is composed of a projection lens device that projects the combined light flux onto a screen, a power supply unit, and a circuit board group on which a control circuit and the like are mounted. The projection lens device includes a zoom lens and a focus lens, and when the focus pattern button is operated when the focus lens is operated to focus, a predetermined pattern is enlarged and displayed on the screen. It has become.

[0003]

However, the projection display device is usually provided with a zoom function, and the projection size on the screen can be changed by operating the zoom lens. Since no special pattern is projected during zoom adjustment, there is a problem in that the size of the screen actually displayed is unknown.

[0004] Here, the inventor of the present application proposes that a pattern indicating the actual size of the screen is displayed on the screen when the size of the screen is adjusted by operating the zoom lens. However, in this case, it is necessary to press a predetermined button to change the type of the pattern displayed on the screen each time depending on whether the focus is adjusted or the size of the screen is set, which is inconvenient. is there.

SUMMARY OF THE INVENTION An object of the present invention is to provide a projection type display device capable of automatically displaying an optimum pattern on a screen during both focus adjustment and zoom adjustment.

[0006]

In order to solve the above problems, according to the present invention, in a projection type display device having a first lens and a second lens, a first sensor and a second sensor are provided. An image for operating the first lens is displayed based on the output of the first sensor, and an image for operating the second lens is displayed based on the output of the second sensor. .

According to this structure, an image corresponding to each lens is displayed, and it is convenient to adjust the lens.

The first and second sensors are touch sensors.

According to this structure, it is possible to display an image for adjustment corresponding to which lens is touched.

The first and second sensors are photosensors.

With this configuration, it is possible to detect the movement of the hand attempting to touch the lens and display the adjustment image.

The first sensor is a sensor for detecting the movement of a movable part mechanically connected to the first lens, and the second sensor is mechanically connected to the second lens. It is characterized in that it is a sensor for detecting the movement of the movable part.

According to this structure, it is possible to display the adjustment image by detecting the movement of the object attached to the lens, not the lens itself.

After the output of the first or second sensor is changed, the display control means is provided for displaying the image for a predetermined time and then stopping the display.

According to this structure, when the lens is not actually operated, the adjustment image can be automatically erased after displaying the adjustment pattern.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A projection type display device which is an embodiment of the present invention will be described below with reference to the drawings.

(Overall Structure) FIG. 1 shows the appearance of the projection display apparatus of this example. The projection display device 1 of this example has an outer case 2 having a rectangular parallelepiped shape. The outer case 2 basically includes an upper case 3, a lower case 4, and a front case 5 that defines the front surface of the device. A front end portion of the projection lens unit 6 including a focus ring 61 that supports the focus lens and a zoom ring 62 that supports the zoom lens projects from the center of the front case 5.

FIG. 2 shows the arrangement of each component inside the exterior case 2 of the projection display apparatus 1. As shown in this figure, inside the exterior case 2, a power supply unit 7 is arranged at the rear end side. The light source lamp unit 8 and the optical lens unit 9 are arranged at a position adjacent to the front side of the device. The light source lamp of the light source lamp unit 8 includes a lamp body such as a halogen lamp and a reflector, and emits light from the lamp body toward the optical lens unit 9 side along the optical axis. In the center of the front side of the optical lens unit 9,
The base end side of the projection lens unit 6 is located. on the other hand,
On one side of the optical lens unit 9, an interface circuit board 11 on which an input / output interface circuit is mounted is arranged in the front-rear direction of the device, and in parallel to this, a video board 12 on which a video signal processing circuit is mounted is installed. It is arranged. Further, a control board 13 for device drive control is arranged above the light source lamp unit 8 and the optical lens unit 9. Speakers 14R and 14L are arranged at the left and right corners on the front end side of the device, respectively.

An intake fan 15A for cooling is arranged in the center of the upper surface side of the optical lens unit 9, and a circulation fan 15B for forming a circulation flow for cooling is arranged in the center of the bottom surface side of the optical lens unit 9. There is. An exhaust fan 16 is arranged on the side of the device, which is the back side of the light source lamp unit 8. Then, the substrate 1 in the power supply unit 7
Auxiliary cooling fans 17 for sucking the cooling airflow from the intake fan 15A into the power supply unit 7 are arranged at positions facing the ends of 1 and 12.

Further, directly above the power supply unit 7, a floppy disk drive unit (F
DD) 18 is arranged.

(Structure of Exterior Case) As shown in FIG.
The upper case 3 of the outer case 2 is a rectangular ceiling wall 3a.
And the left and right side walls 3b and 3c and the rear wall 3d that extend downward substantially vertically from the three sides excluding the front side. Similarly, the lower case 4 has a rectangular bottom wall 4
a, and left and right side walls 4b and 4c and a rear wall 4d which are erected substantially vertically from three sides except the front side thereof. The front case 5 has a central portion that is curved so as to be slightly convex toward the front, and a circular opening 5b around which an annular rim 5a is formed is opened in this portion. The front end side portion of 6 extends toward the front side of the apparatus. The upper case 3 and the lower case 4 are connected to each other by fixing screws 21a, 21b and 22a, 22b at two positions on each of the left and right side walls. The front case 5 is held in a state of being sandwiched by the upper case 3 and the lower case 4 from above and below.

An air filter cover 23 is attached to the top wall 3a of the upper case 3 at the center front side position. A large number of vent holes are formed in the cover 23, and an air filter 24 is attached to the inside of the cover 23 so as to prevent dust and the like from entering from the outside through the vent holes (see FIG. 2B. )reference). The intake fan 15A is located on the back surface side. A large number of communication holes 25R, 25L are formed at positions corresponding to the built-in speakers 14R, 14L at the left and right ends on the front side of the ceiling wall 3a. An operation switch lid 26 is attached to the left end of the ceiling wall 3a. This operation switch lid 26
Can be opened and closed around its one end. When the lid 26 is opened, a large number of operation switches arranged inside are exposed.

A lamp replacement lid 27 is attached to the bottom wall 4a of the lower case 4 at a position corresponding to the built-in light source lamp unit 8. This replacement lid 27 is the lower wall 4
The light source lamp unit 8 can be replaced by loosening the screw and removing the lid 27.

Height adjusting feet 31 (31R, 31L) are arranged at the left and right corners of the front end of the bottom wall 4a. These feet 31 can be finely adjusted in height by turning them, and by operating the height adjustment buttons 32 (32R, 32L) projecting to the lower side portions of both ends of the front case 5, these feet 31 can be adjusted. The height of the foot 31 can be roughly adjusted (coarse adjustment). A protrusion 33 is formed at the center of the rear end side of the bottom wall 4a.
Then, the device 1 is installed on a table or the like while being supported at three points by the above-mentioned two feet 31. In addition, to prevent the device from rattling when the installation surface is uneven,
Auxiliary protrusions 34R and 34L are also formed on both ends on the rear end side of the bottom wall.

On the other hand, at the upper right position of the front case 5 defining the front surface of the apparatus and the center position of the rear wall 3d of the upper case 3 defining the upper half of the rear surface of the apparatus,
Light receiving windows 35F and 35R are arranged respectively. These light receiving windows are for receiving control light from the remote controller. As described above, in this example, since the light receiving windows are formed in the front and rear of the device, it is convenient because the remote operation can be performed from either the front side or the rear side of the device. Further, heat radiating portions 5R and 5L in which a large number of heat radiating fins are exposed are formed in the vertical direction at the left and right positions of the projection lens unit 6 in the center of the front case 5. These heat radiating portions are for radiating heat to the outside from the air flow circulating inside the optical lens unit.

An AC inlet 36 for supplying external power and a main power switch 37 are arranged at the left end of the rear wall 4d of the lower case 4 which defines the lower half of the rear surface of the device. .

As shown in FIG. 1A, a portable handle 38 is attached to the left side surface of the device. The two base end portions 38a and 38b of the handle 38 are rotatably attached to the mating surfaces of the side walls 3b and 4b of the upper case 3 and the lower case 4. The side wall 3b on the upper case side is formed with a recess 3e for storing a handle, and the handle 38 can be stored therein. In addition, an LED display unit 39 for displaying the operating state of the device is arranged at the upper end portion of the side wall 3b. An input / output terminal lid 41 that can be opened and closed centered on the lower end is attached to the left side wall 4b on the lower case side. When this is opened, a large number of input / output terminals arranged inside are exposed.

Further, in the upper case side wall 3b on the left side of the apparatus, a floppy disk insertion opening 18a is opened in a horizontal state at a position near the rear side top wall 3a. The eject button 1 is on the upper right of the insertion opening 18a.
8b is arranged.

Side wall 3 of the upper and lower cases defining the opposite side of the device, ie, the right side surface.
c, 4c, the exhaust hole 43 in the state of extending over both of these.
Are formed. An exhaust fan 16 for cooling is located on the back side of the exhaust hole 43 via an air filter.

(Optical Lens Unit) In FIG. 3, the optical lens unit 9 has optical elements other than the prism unit 910 constituting the color synthesizing means sandwiched between the upper and lower light guides 901 and 902 from above and below. It is configured to be retained. These top light guides 90
The lower light guide 902 and the lower light guide 902 are fixed to the upper case 3 and the lower case 4 by fixing screws. Also, these upper and lower light guides 901, 9
02 is also fixed to the prism unit 910 side by a fixing screw. The prism unit 910 is
The thick head plate 903, which is a die-cast plate, is fixed to the back surface side with fixing screws. The base end side of the projection lens unit 6 is similarly fixed to the front surface of the head plate 903 by a fixing screw. Therefore, in this example,
The prism unit 910 and the projection lens unit 6 are integrally fixed to each other with the head plate 903 interposed therebetween. In this way, the head plate 903 having high rigidity is sandwiched, and both of these parts are integrated. Therefore, even if a shock or the like acts on the side of the projection lens unit 6, the positional displacement of both members does not occur.

(Optical System) The optical system incorporated in this example will be described below. FIG. 4 shows only the optical system of the projection display apparatus 1 of this example. The optical system of the present example includes a light source lamp 805, an illumination optical system 923 composed of integrator lenses 921 and 922 which are uniform illumination optical elements, and a white light flux W emitted from the illumination optical system 923, , Green, and blue light beams R, G, and B for separating the light beams, and three liquid crystal light valves 925R and 925 as light valves for modulating the light beams of the respective colors.
G, 925B, a prism unit 910 as a color combining optical system for re-combining the modulated color light beams, and a projection lens unit 6 for enlarging and projecting the combined light beams on a screen.
Composed of. Further, it has a light guide system 927 for guiding the blue light flux B among the respective color light fluxes separated by the color separation optical system 924 to the corresponding liquid crystal valve 925B.

As the light source lamp 805, a halogen lamp, a metal halide lamp, a xenon lamp or the like can be used. The uniform illumination optical system 923 includes the reflection mirror 9
31, the central optical axis 1a of the light emitted from the illumination optical system is bent at a right angle in the front direction of the device. The integrator lenses 921 and 922 are arranged so as to be orthogonal to each other with the mirror 931 sandwiched therebetween.

The color separation optical system 924 includes a blue-green reflection dichroic mirror 941 and a green reflection dichroic mirror 94.
2 and a reflection mirror 943. White light flux W
First, in the blue-green reflective dichroic mirror 941, the blue luminous flux B and the green luminous flux G contained therein are reflected at right angles, and the green reflective dichroic mirror 942 is reflected.
Head to. The red light flux R passes through this mirror 941, is reflected at a right angle by the rear reflection mirror 943, and is emitted from the emitting portion 944 of the red light flux to the prism unit 910 side. The blue and green luminous fluxes B and G reflected by the mirror 941 are reflected by the green reflection dichroic mirror 942.
In, only the green light flux G is reflected at a right angle and is emitted from the emission portion 945 of the green light flux to the color combining optical system side.
The blue light flux B that has passed through this mirror 942 is emitted from the emission portion 946 of the blue light flux to the light guide system side.

Emitting section 9 of each color luminous flux of color separation optical system 924
Condensing lenses 951, 952, and 953 are arranged on the emission sides of 44, 945, and 946, respectively. Therefore, the respective colored light fluxes emitted from the respective emission parts are incident on these condenser lenses 951, 952 and 953 and are collimated.

The light fluxes R, G, of the respective colors thus collimated
Of B, the red and green light fluxes R and G enter the liquid crystal light valves 925R and 925G and are modulated, and image information corresponding to each color light is added. That is, these light valves are switching-controlled by drive means (not shown) in accordance with the image information, so that each color light passing therethrough is modulated. As such driving means, known means can be used as they are. On the other hand, the blue light flux B is guided to the corresponding liquid crystal light valve 925B via the light guide system 927, and is similarly modulated here according to the image information. As the light valve of this example, for example, one using a polysilicon TFT as a switching element can be used. The light guide system 927 includes an incident side reflection mirror 971, an emission side reflection mirror 972, an intermediate lens 973 arranged therebetween, and a condenser lens 953 arranged on the front side of the liquid crystal panel 925B.

Next, the respective color light fluxes which have been modulated through the respective liquid crystal panels 925R, G, B enter the color synthesizing optical system 910 and are re-synthesized there. In this example, the color combining optical system is configured by using the prism unit 910 composed of the diclick prism as described above. The color image recomposed here is enlarged and projected on the screen at a predetermined position via the projection lens unit 6.

Here, in the optical system of this example, in addition to the above configuration, it is preferable that a half-wave plate is arranged in the path of the light flux of each color to align the light flux of each color with S-polarized light.
When only S-polarized light is used in this way, the color separation property of the dichroic mirror is improved as compared with the case where random polarized light in which P-polarized light and S-polarized light are mixed is used as it is. Further, although the light guide system 927 uses a mirror to reflect the light flux, since the S-polarized light has a higher reflectance than the P-polarized light, there is also an advantage that a light amount loss and the like can be suppressed.

(Power Supply Unit) As shown in FIG. 2, in the power supply unit 7, each constituent element is built in a metal shield case 701, and electric and magnetic noise generated in this portion leaks to the outside. To prevent this. The shield case 701 has a size that extends over the left and right sidewalls of the exterior case 2 of the device, and the left end portion has a planar shape that projects toward the front side of the device with a constant width. That is, in front of the projecting portion 702, the reflection mirror 931 of the uniform illumination system of the optical system block 9 is 45 in the front-back direction of the device.
It is arranged at an angle of degrees. The space on the back side tends to become a dead space. In this example, this space 703
In order to effectively utilize the above, the shield case 701 is projected toward the space 703 to form a projecting portion 702, and a space for arranging the components of the power supply unit is secured. In the power supply unit 7 of this example, by shortening the power supply path to each drive portion from here as much as possible, the lead wire which is a noise generation source is shortened as much as possible, thereby suppressing the generation of noise. I am trying. For example, the AC inlet 36 and the main power switch 37 are directly fixed to the rear side surface of the shield case 701 of the power supply unit 7. Therefore, the lead wires routed from these respective parts to the power supply unit 7 can be omitted.

(Control System) FIG. 5 is a schematic block diagram of a control system of the projection display apparatus 1 of this example.

As shown in the figure, a video signal is input from the outside via an interface circuit formed on the interface circuit board. Video input terminal 201
The video signals from 1, 2012 and 2013 are AD-converted via AD converters 2015, 2016 and 2017, respectively. Input video signals from the video input terminals 2011 and 2012 are decoded through the AD-converted digital decoder 2021 and supplied to the VRAM controller 2030. The R, G, B video input signals are supplied to the VRAM controller 2030 after AD conversion. Further, the vertical synchronizing signal V and the horizontal synchronizing signal H from the synchronizing signal input terminal 2018 are the synchronizing signal processing circuit 2040.
Is supplied to. The audio information is input from the input terminal 2050 via the volume 2051 and is supplied to the left and right speakers 14R and 14L via the amplifier 2052.

Reference numeral 2060 denotes a micro controller which controls the whole, and controls the drive of each part and the processing control of video information according to a control program stored in a memory such as an EEPROM. This microcontroller 2
Under the control of 06, the VRAM controller 2030
The input video signal is stored for each frame in the VRAM 2062 which is a frame memory. This VRAM20
The video signal from 62 is passed through the γ correction circuit 2063 to γ
The drive control circuit 2 of the liquid crystal light valves 925R, 925G, and 925B corresponding to each color signal after being corrected.
080R, G, B. These drive control circuits drive corresponding liquid crystal light valves based on the supplied video information.

In this example, line buffers 2064R and 2064B, which are FIFO buffers for temporarily storing the R and B video signals, are provided. The video information for one pixel line stored in these is read out according to the written order, and the drive control circuit 2080R,
It is output to 2080B. On the other hand, the line buffer 2064G configured by the LIFO buffer for temporarily storing the G video signal is read from the last written image information and output to the drive control circuit 2080G.

(Projection Lens Device) In the projection type display device 1 configured as described above, as shown in FIG. 6, the projection lens unit 6 is dedicated depending on which of the focus lens 63 and the zoom lens 64 is operated. Projection lens device 60 for displaying the pattern of
It is installed as A. That is, in this projection lens apparatus 60A, touch sensors 65A and 66A (touch sensors 65A and 66A ( The operation target detection means) is built in, and the detection result is monitored by the microcontroller 2060 (pattern display control means). Here, the touch sensors 65A and 66A
Is arranged at a place where the hand is surely touched when operating the focus ring 61 or the zoom ring 62.

Further, the projection lens device 60A stores the ROM 6 in which the image data of the focus pattern to be projected on the screen when the focus is adjusted is stored.
7 are configured. Therefore, when the user touches the focus ring 61 to perform the focus adjustment from now on, the touch sensor 65A detects it, and the microcontroller 2060 reads the pattern for the focus adjustment from the ROM 67, and the pattern shown in FIG. As shown in (A), a pattern dedicated to focus adjustment is automatically projected on the screen via the projection lens unit 6.

The ROM 67 also stores image data of a zoom pattern to be displayed on the screen when zoom adjustment is performed. Therefore, when the user touches the zoom ring 62 to perform zoom adjustment, the touch sensor 65B detects the touch, and the microcontroller 2060 reads the pattern for zoom adjustment from the ROM 67, and then FIG. As shown in (B), a pattern for zoom adjustment is automatically projected on the screen via the projection lens unit 6. As such a zoom pattern, a pattern in which the size of the actual screen is represented by arrows at the four corners is used.

Further, the microcontroller 2060 should be set to automatically erase the pattern projected until a predetermined time elapses after the focus ring 61 or the zoom lens 64 is touched. Is also possible. Therefore, in the projection display apparatus 1 using the projection lens device 60A, focus adjustment can be performed while observing the pattern dedicated to focus displayed on the screen, and the pattern dedicated to zoom displayed on the screen can be adjusted. You can adjust the size of the screen on the screen while watching. Further, which pattern is displayed is convenient because the touch sensors 65A and 66A automatically detect which of the focus ring 61 and the zoom ring 62 is touched, and the pattern that matches the pattern is automatically displayed on the screen. Is. Furthermore, when you have finished focusing, etc., if you leave it as it is without any special operation,
It is also convenient in this respect because it automatically erases the pattern that had been displayed until then.

(Another Projection Lens Device) Projection Display Device 1
In view of displaying dedicated patterns for focus adjustment and zoom adjustment,
An infrared sensor may be used instead of the touch sensors 65A and 66A. For example, the projection lens device 6 shown in FIG.
In 0B, the focus ring 61 and the zoom lens 64, which the hand touches when operating the focus lens 63,
Each of the zoom rings 62, which is touched by the hand when operating the, has a photocoupler 6 having an infrared ray path in the vicinity thereof.
5B and 66B (operation target detection means / optical sensor) are configured, and the detection result is monitored by the microcontroller 2060 (pattern display control means). Here, the optical paths of the photocouplers 65B and 66B are set at locations where it is possible to discriminate which ring the hand is extending when operating the focus ring 61 or the zoom ring 62 and which ring is being touched. . In arranging the photocouplers 65B and 66B in this way, for example, a pair of frames 660 are projected from the front case 5 to both sides of the projection lens unit 6, and the photocouplers 65B and 66B are arranged inside these frames 660.
To provide.

Therefore, even in the projection type display device 1 using this projection lens device 60B, if the user extends the focus ring 61 to interrupt the optical path of the photocoupler 65B for focus adjustment, the micro controller will be used. The 2060 reads the image data of the focus pattern for performing the focus adjustment from the ROM 67 and automatically displays the focus adjustment-dedicated pattern on the screen via the projection lens unit 6 as shown in FIG. 7A. It is like this. If the user extends the zoom ring 62 and blocks the optical path of the photocoupler 66B to perform zoom adjustment, the microcontroller 206 reads the image data of the zoom pattern for zoom adjustment from the ROM 67. As shown in FIG. 7B, a pattern dedicated to zoom adjustment is automatically projected on the screen via the projection lens unit 6. Even in this case, the microcontroller 206 uses the photo coupler 65B for the hand extended to the focus ring 61 or the zoom lens 64,
When a predetermined time elapses after the optical path of 66B is blocked, the pattern projected until then is automatically erased.

Therefore, also in the projection display apparatus 1 of this example, it is possible to perform focusing and screen size adjustment while observing the focus-only or zoom-only pattern projected on the screen. Further, which pattern is to be displayed is convenient because it is automatically detected which one of the focus ring 61 and the zoom ring 62 the hand is reached, and the pattern matching the pattern is automatically displayed on the screen. Furthermore, when focusing is completed, if the pattern is left as it is without any special operation, the pattern that has been projected up to that point is automatically erased, which is also convenient in this respect.

(Further Other Projection Lens Device) When performing the focus adjustment and the zoom adjustment, the focus adjustment button and the zoom adjustment button can be operated without touching the focus ring 61 or the zoom ring 62. In some cases, if each of them is provided and operated, the driving device for each lens automatically drives the lens. In such a case, which button is to be operated may be monitored by a touch sensor or an optical sensor, and a predetermined pattern may be automatically displayed based on the monitoring result. In addition, a predetermined pattern may be displayed on the screen according to signals emitted when these buttons are pressed.

Further, when the focus lens 63 or the zoom lens 64 is automatically driven by operating the button, the movement of the movable part in the projection lens unit 6 is monitored by the displacement sensor (operation target detecting means). Good.
As such a displacement sensor, when the movable part makes a rotational motion, a change in the angular position of the movable part is detected by the angle sensor and which lens is adjusted by monitoring by the angle sensor. It will be.

[0052]

As described above, in the projection display apparatus according to the present invention, which of the zoom lens and the focus lens is operated is detected, and the focus adjustment or the zoom is performed based on the detection result. The feature is that the adjustment pattern is enlarged and projected on the screen. Therefore, according to the present invention, the focus adjustment can be performed while observing the focus-only pattern projected on the screen, and the size of the screen on the screen can be adjusted while observing the zoom-only pattern projected on the screen. The height can be adjusted. Further, which pattern is to be displayed is convenient because it is automatically detected which lens is operated and a pattern matching the pattern is automatically displayed on the screen.

In the present invention, when the pattern projected until then is automatically erased when a predetermined time elapses after the operation of the lens is started, focusing or the like may be performed. When you're done,
If you leave it as it is without any special operation, the pattern that was displayed up to that point will automatically disappear,
This is also convenient.

[Brief description of drawings]

FIG. 1 is a diagram showing an external shape of a projection display device which is an embodiment of the present invention.

FIG. 2 (A) is a schematic plan configuration diagram showing the optical lens unit and the projection lens unit in a removed state, and FIG.
Is a sectional view thereof.

FIG. 3 is a schematic sectional view showing a head plate, a prism unit and a projection lens unit taken out.

4 is a schematic configuration diagram of an optical system incorporated in the projection display apparatus of FIG.

5 is a schematic block diagram of a control system of the projection display apparatus of FIG.

FIG. 6 is an explanatory diagram of a projection lens device used in the projection display device to which the present invention is applied.

7A is an explanatory diagram of a focus adjustment pattern automatically projected on a screen in a projection display device to which the present invention is applied, and FIG. 7B is an explanatory diagram of a zoom adjustment pattern thereof. Is.

FIG. 8 is an explanatory diagram of another projection lens device used in the projection display device to which the present invention is applied.

[Explanation of symbols]

1 Projection Display Device 2 Exterior Case 3 Upper Case 4 Lower Case 5 Front Case 5R, 5L Heat Dissipation Part 6 Projection Lens Unit 7 Power Supply Unit 8 Light Source Lamp Unit 9 Optical Lens Units 60A, 60B Projection Lens Device 61 Focus Ring 62 Zoom Ring 63 Focus lens 64 Zoom lenses 65A, 66A Touch sensor (operation target detection means) 65B, 66B Photocoupler (operation target detection means) 910 Prism unit (color synthesis means) 924 Color separation means 925R, 925G, 925B Light valve 2060 Micro controller ( Pattern display control means)

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Claims (6)

(57) [Claims] 1. A projection display device having a first lens and a second lens, comprising a first sensor and a second sensor, and operating the first lens based on the output of the first sensor. And a second image for operating the second lens based on the output of the second sensor, and a second image for operating the second lens is displayed. 2. The projection display device according to claim 1, wherein the first and second sensors are touch sensors. 3. The projection display device according to claim 1, wherein the first and second sensors are photosensors. 4. The first sensor is a sensor for detecting the movement of a movable part mechanically connected to the first lens, and the second sensor is mechanically connected to the second lens. The projection type display device according to claim 1, wherein the projection type display device is a sensor for detecting the movement of the movable portion. 5. The display control means according to claim 1, further comprising display control means for stopping the display after displaying the image for a predetermined time after the output of the first or second sensor changes. Projection display device. 6. The first lens is a zoom lens, the first image is a zoom adjustment pattern, the second lens is a focus lens, and the second image is a focus adjustment pattern. The projection display device according to claim 1.