JP2006276405A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device capable of achieving miniaturization. <P>SOLUTION: The image display device includes a plurality of projection clusters comprising a light source device which emits a light beam of basic color; a spatial optical modulation device which optically modulates the light beam of basic color emitted from the light source device in accordance with an image signal; and a projection unit which projects the image based on the light beam of basic color modulated by the spatial optical modulation device to a screen 10. The projection cluster includes projection units for respectively projecting the image composed of the light beam of S polarized light, whose basic color is different from each other, to the screen 10, and the projection units for respectively projecting the image composed of the light beam of P polarized light, whose basic color is different from each other, to the screen 10, and forms a composite image on the screen 10 by composing the images respectively projected from the respective projection units on the screen 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display device.

As an example of an image display device (projector) that projects color light including image information generated by a spatial light modulation device such as a liquid crystal device onto a screen via a projection system, a rear projection type that projects color light from the back side of the screen An image display device (rear projector) is known. Further, there is known a stereoscopic image display device that projects color lights having different polarization directions onto a screen and causes a viewer to recognize the projected image as a stereoscopic image (see Patent Document 1).
Further, there has been known an image display device that provides a large image by combining projected images of a plurality of projectors in parallel on a screen. (See Patent Document 2)
JP 2003-185969 A JP 2002-72359 A

  By the way, in the above-mentioned image display device, the object surface of the projection system and the light emission surface of the spatial light modulation device are made to coincide with each other, and the image surface of the projection system and the screen are made to coincide with each other. And the screen must be in a conjugate positional relationship with respect to the projection system. However, since the conventional technique is a configuration in which a synthesis system including a dichroic prism or the like is provided between the spatial light modulation device and the projection system, the distance between the projection system and the light exit surface of the spatial light modulation device (projection) It is necessary to secure the back focus of the system to such an extent that the synthesis system can be arranged. If the back focus is increased, the distance between the projection system and the screen (front focus of the projection system) is also increased. Therefore, when this image display device is applied to a rear projector, the rear projector is reduced in size (thinner). Will do. In addition, since the present invention is applied to a large apparatus that can tolerate a large projection space, the entire apparatus requires a long projection distance.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image display device that can be downsized.

  In order to solve the above problems, the present invention provides a light source device that emits basic color light, a spatial light modulation device that modulates the basic color light emitted from the light source device in accordance with an image signal, and the spatial light modulation. A plurality of projection clusters comprising a plurality of projection units having a projection system for projecting an image based on the basic color light modulated by the apparatus onto the first surface; A plurality of first polarization projection units for projecting images on the first surface, and a plurality of second polarization projection units for projecting images composed of different basic color lights of the second polarization on the first surface, respectively. A synthesized image on the first surface by synthesizing the image projected from each of the first polarized light projection unit and the second polarized light projection unit on the first surface. An image display apparatus is provided to form.

  According to the present invention, a plurality of first polarization projection units capable of projecting different basic color lights of the first polarization and a plurality of second polarization projection units capable of projecting different basic color lights of the second polarization are installed. The plurality of projection clusters synthesize the images projected from the projection units on the first surface. In this case, since it is not necessary to provide a synthesis system for the projection cluster, it is possible to reduce the size of the apparatus. Moreover, the structure of each projection unit can be simplified.

  One eye transmission unit that is projected from the first polarization projection unit and transmits only the first polarization through the first surface, and the first transmission unit that is projected from the second polarization projection unit and through the first surface. It is possible to adopt a configuration having glasses having the other eye transmission part that transmits only two polarized light. Thereby, a viewer wearing glasses can recognize a stereoscopic image.

  Each of the emission surfaces for emitting the basic color light among the projection units constituting the plurality of projection clusters is arranged side by side on a second surface having a predetermined positional relationship with respect to the first surface. Can be adopted. As a result, the overall structure of the apparatus can be simplified and the apparatus can be downsized as compared with the case where a plurality of spatial light modulators are arranged in a complicated manner.

  Each of the emission surfaces may employ a configuration in which the emission surfaces are arranged side by side with respect to each of a first direction on the second surface and a second direction different from the first direction. Thereby, the structure of the entire apparatus can be simplified and the apparatus can be reduced in size.

  Each of the emission surfaces can employ a configuration in which the emission surfaces are arranged close to each other on the second surface. Thereby, distortion of the image projected on the 1st surface from each projection unit can be suppressed to the minimum, and a desired image (composite image) can be obtained.

  A plurality of projection units that project the same basic color light are provided, and each of the emission surfaces of the plurality of projection units that project the same basic color light is provided at positions separated from each other on the second surface, It is possible to employ a configuration in which images based on the basic color light emitted from each of the emission surfaces are projected adjacent to each other on the first surface. Thereby, even if the aperture ratio of each projection unit is low, for example, the substantial brightness of the image formed on the first surface can be improved.

  The plurality of projection clusters include a first basic color light projection unit that projects first basic color light, a second basic color light projection unit that projects second basic color light, and a third basic color light projection unit that projects third basic color light. Each of the exit surfaces of the first, second, and third basic color light projection units can be configured to be arranged at each of the vertices of a triangle on the second surface. The plurality of basic color lights can adopt a configuration including red light, green light, and blue light. Thereby, a desired full-color image can be formed.

  The light exit surface of the spatial light modulator is disposed in a direction perpendicular to the optical axis of the projection system, and the center axis of the light beam emitted from the light exit surface is shifted from the optical axis of the projection system. The configuration can be adopted. Thereby, even if the central axis of the light beam projected on the first surface and the first surface are non-perpendicular, a desired image can be formed on the first surface.

  The spatial light modulation device can employ a configuration including a liquid crystal device. Thereby, each projection unit can project a desired image.

  The light source device may employ a configuration including a light emitting diode. Thereby, each projection unit can project desired basic color light.

  Each of the light source devices has a light amount control means independently and can be turned off or dimmed. Thereby, a wide dynamic range light can be projected.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, an XYZ orthogonal coordinate system is set, and the positional relationship of each member will be described with reference to this XYZ orthogonal coordinate system. A predetermined direction in the horizontal plane is the X-axis direction, a direction orthogonal to the X-axis direction in the horizontal plane is the Y-axis direction, and a direction orthogonal to the X-axis direction and the Y-axis direction (that is, the vertical direction) is the Z-axis direction. To do. Furthermore, the rotation directions around the X, Y, and Z axes are the θX, θY, and θZ directions, respectively.

<First Embodiment>
FIG. 1 is a schematic configuration diagram illustrating an image display apparatus according to the first embodiment. In FIG. 1, the image display device PJ includes a screen (first surface) 10 and a plurality of projection clusters 12 that project an image on the screen 10. The projection cluster 12 includes a plurality of projection units RUs, RUp, GUs, GUp, BUs, and BUp. The images projected from the plurality of projection clusters maintain the continuity of the surrounding image, the position of the image, and the luminance chromaticity in the blending area 11, and form a composite image on the screen 10. The image display device PJ of the present embodiment is a so-called rear projector, which is a rear projection type image display device that projects an image on the screen 10 from the back side of the screen 10. In the following description, the image display apparatus is appropriately referred to as a “projector”.

  The projection cluster 12 has a plurality of projection units RUs, GUs, and BUs that respectively project images composed of S-polarized basic color lights on the screen 10 and images composed of P-polarized fundamental color lights on the screen 10 respectively. A plurality of projection units RUp, GUp, and BUp to be projected are included. Specifically, the projection cluster projects S-polarized red light projection units RUs that project S-polarized red light, S-polarized green light projection units GUs that project S-polarized green light, and S-polarized blue light. S-polarized blue light projection unit BUs, P-polarized red light projection unit RUp that projects P-polarized red light, P-polarized green light projection unit GUp that projects P-polarized green light, and P-polarized blue light And a P-polarized blue light projection unit BUp for projection. These projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged in a predetermined positional relationship.

  FIG. 2 is a schematic configuration diagram showing the S-polarized red light projection unit RUs. In FIG. 2, the projection unit RUs includes a light source device 1 that emits red light, an integrator system 2 that equalizes the illuminance of the red light emitted from the light source device 1, and an integrator system 2 that is emitted from the light source device 1. A space that modulates the red light emitted from the polarization conversion device 3, the lens system 4, and the light source device 1, which passes through the polarization conversion device 3 and the lens system 4, according to the image signal. It has a light modulation device 5 and a projection system (projection optical system) 6 that projects an image based on red light modulated by the spatial light modulation device 5 onto a screen 10. Each of the light source device 1, the integrator system 2, the polarization conversion device 3, the lens system 4, the spatial light modulation device 5, and the projection system 6 is held by a holding member (housing) 8.

  The light source device 1 of the projection unit RUs includes a light emitting diode (LED) that emits red light. The integrator system 2 is configured to include, for example, a fly-eye lens, and is emitted from the light source device 1 and uniformizes the illuminance of red light with respect to the polarization conversion device 3. The polarization conversion device 3 includes a polarization beam splitter (hereinafter referred to as “PBS array” as appropriate). The PBS array includes a polarization separation film and a phase difference plate (1 / 2λ plate). Each polarization separation film of the PBS array of the present embodiment passes, for example, P-polarized light out of the red light from the integrator system 2 and changes the optical path of S-polarized light by 90 °. The S-polarized light whose optical path has been changed is reflected by an adjacent reflecting member and emitted as it is. On the other hand, the P-polarized light that has passed through the polarization separation film is converted into S-polarized light by the phase difference plate provided on the light exit side, and emitted. That is, in FIG. 2, almost all of the red light incident on the polarization conversion device 3 is converted to S-polarized light.

  The spatial light modulation device 5 includes a liquid crystal device (hereinafter referred to as “light valve” as appropriate). The light valve includes an incident-side polarizing plate, a panel portion having a liquid crystal sealed between a pair of glass substrates, and an emission-side polarizing plate. A pixel electrode and an alignment film are provided on the glass substrate. The light valve constituting the spatial light modulation device 5 transmits only light in a predetermined vibration direction, and the red light incident on the spatial light modulation device 5 passes through the spatial light modulation device 5. Is modulated by light. In FIG. 2, the light emitted from the spatial light modulator 5 is S-polarized red light.

  Red light (modulated light) light-modulated by the spatial light modulator 5 is projected on the screen 10 by the projection system 6. The projection system 6 is a so-called enlargement system that enlarges an image on the incident side and projects it on the screen 10. As described above, the S-polarized red light projection unit RUs projects an image made of S-polarized red light on the screen 10.

  The S-polarized red light projection unit RUs has been described above, but the other projection units RUp, GUs, GUp, BUs, and BUp have substantially the same configuration as the projection unit RUs shown in FIG. That is, the light source device 1 constituting the P-polarized red light projection unit RUp includes an LED that emits red light, and the red light emitted from the spatial light modulator 5 constituting the P-polarized red light projection unit RUp is P. Polarized light. The light source device 1 constituting the S-polarized green light projection unit GUs includes an LED that emits green light, and the green light emitted from the spatial light modulator 5 constituting the S-polarized green light projection unit GUs is S-polarized light. is there. The light source device 1 constituting the P-polarized green light projection unit GUp includes an LED that emits green light, and the green light emitted from the spatial light modulator 5 constituting the P-polarized green light projection unit GUp is P. Polarized light. The light source device 1 constituting the S-polarized blue light projection unit BUs includes an LED that emits blue light, and the blue light emitted from the spatial light modulation device 5 constituting the S-polarized blue light projection unit BUs is S-polarized light. is there. The light source device 1 constituting the P-polarized blue light projection unit BUp includes an LED that emits blue light, and the blue light emitted from the spatial light modulator 5 constituting the P-polarized blue light projection unit BUp is P. Polarized light. A polarization conversion device can be appropriately disposed on the exit surface side of the projection system 6 of each projection unit.

  The plurality of projection clusters and the projection units RUs, RUp, GUs, GUp, BUs, and BUp constituting the plurality of projection clusters are provided in a predetermined positional relationship with each other on the back side of the screen 10. In the present embodiment, the plurality of projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged in parallel in an array on the back side of the screen 10. Then, the image projected from each of the red light projection units RUs, RUp, the green light projection units GUs, GUp, and the blue light projection units BUs, BUp is synthesized on the screen 10, so that the full color is displayed on the screen 10. A composite image is formed. The viewer appreciates an image (composite image) projected on the screen 10 from the back side of the screen 10 from the front side.

  FIG. 3 is a view of the projection units RUs, RUp, GUs, GUp, BUs, and BUp constituting the projection cluster as viewed from the light exit surface side. Each of the projection units RUs, RUp, GUs, GUp, BUs, and the Bup exit surface (the exit surface of the projection system 6) has a predetermined surface (second surface) that is in a predetermined positional relationship with respect to the screen (first surface) 10. ) Arranged side by side above. As shown in FIG. 1, in the present embodiment, the emission surfaces of the projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged side by side on a predetermined plane that is substantially parallel to the screen 10. Yes. In FIG. 1, the screen 10 is substantially parallel to the XZ plane, and the exit surfaces of the projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged along the XZ plane.

  In addition, the reflection which can reflect the modulated light inject | emitted from the projection unit RUs, RUp, GUs, GUp, BUs, and Bup between the exit surface of the projection unit RUs, RUp, GUs, GUp, BUs, and BUp and the screen 10 is possible. A member (reflection mirror) may be provided, and modulated light via the reflection mirror may be projected onto the screen 10.

  In the present embodiment, the emission surfaces of the projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged side by side in the X-axis direction and the Z-axis direction on the XZ plane in FIG. Yes. The arrangement of the emission surfaces of the plurality of projection units RUs, RUp, GUs, GUp, BUs, and BUp is set according to the size (shape) of the screen 10. That is, since the screen 10 in the present embodiment is larger in size in the X-axis direction than in the Z-axis direction, the plurality of projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged in the X-axis direction. The number of surfaces is larger than that in the Z-axis direction. In the present embodiment, as shown in FIG. 3, three exit surfaces are arranged side by side in the X-axis direction, and two exit surfaces are arranged side by side in the Z-axis direction.

  In addition, the emission surfaces of the plurality of projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged close to each other on the XZ plane. In the present embodiment, the housing 8 of the projection units RUs, RUp, GUs, GUP, BUs, and BUp so that the exit surfaces of the projection units RUs, RUp, GUs, GUp, BUs, and BUp are arranged close to each other. Each of these is firmly fixed by a fixing member (not shown) in close contact with each other.

  Further, the projector PJ of this embodiment can be used as a stereoscopic image display device. That is, in order to allow the viewer to recognize the image projected on the screen 10 as a stereoscopic image, the projector PJ uses one of the S-polarized projection units RUs, GUs, and BUs as one eye image (for example, the left eye image). To S-polarized red light, green light, and blue light. In addition, the projector PJ projects P-polarized red light, green light, and blue light from the P-polarized projection units RUp, GUp, and BUp, respectively, as the other eye image (for example, the right eye image). .

  The viewer can recognize a three-dimensional image by wearing glasses 20 having an S-polarized light transmitting film 21 on the left eye side and a P-polarized light transmitting film 22 on the right eye side as shown in FIG. . Here, the S-polarized light transmission film 21 on the left eye side of the glasses 20 is projected from each of the S-polarized red light projection unit RUs, the S-polarized green light projection unit GUs, and the S-polarized blue light projection unit BUs, and passes through the screen 10. The P-polarized transmission film 22 on the right eye side of the glasses 20 functions as a left-eye transmission unit that transmits only the S-polarized light. The P-polarized red light projection unit RUp, the P-polarized green light projection unit GUp, and the P-polarized blue light projection It functions as a right-eye transmission unit that is projected from each of the units BUp and transmits only P-polarized light through the screen 10.

  As described above, a desired full-color composite image is formed on the screen 10 by combining the images projected from the projection clusters formed of projection units capable of projecting red light, green light, and blue light on the screen 10, respectively. Can be formed. In this case, since it is not necessary to provide a synthesizing system such as a conventional dichroic prism in the projection unit, the back focus of the projection system 6 can be shortened, and accordingly the front focus of the projection system 6 is also shortened. be able to. As described above, a short focus lens can be employed as the projection system 6 to enable wide-angle projection and to reduce the size of the apparatus. In addition, a synthesis system such as a dichroic prism is relatively expensive as compared with the projection system 6 and the like, but since the synthesis system can be omitted, the apparatus cost can be reduced. When the image display device PJ is applied to a rear projector as in the present embodiment, the rear projector can be thinned (downsized). Further, since a conventional synthesizing system is not required, the positioning operation and positioning structure between the light valve and the synthesizing system can be omitted or simplified, and the cost can be reduced. Furthermore, a rear projector having a large screen while being thin can be realized by appropriately adding projection clusters.

  The plurality of projection units of the present embodiment include an S-polarized red light projection unit RUs that projects S-polarized light for red light and a P-polarized red light projection unit RUup that projects P-polarized light. The plurality of projection units of the present embodiment includes an S-polarized green light projection unit GUs that projects S-polarized light for green light and a P-polarized green light projection unit GUp that projects P-polarized light. Furthermore, the plurality of projection units of the present embodiment include an S-polarized blue light projection unit BUs that projects S-polarized light for blue light and a P-polarized blue light projection unit BUp that projects P-polarized light. Then, the light is projected from the S-polarized projection units RUs, GUs, and BUs, and is transmitted from the left-eye transmission unit 21 that transmits only the S-polarized light via the screen 10 and the P-polarized projection units RUp, GUp, and BUp and passes through the screen 10. When the viewer wears the glasses 20 having the right-eye transmission part 22 that transmits only the P-polarized light, the viewer can recognize a stereoscopic image.

  Moreover, since the emission surface of the projection unit (projection system 6) is arranged side by side on a predetermined surface (XZ plane), the degree of freedom of arrangement of the emission surface is improved, and the emission surface is the first on the predetermined surface. It is possible to perform the arrangement side by side in the direction (X-axis direction) or to overlap the second direction (Z-axis direction) different from the first direction without being greatly restricted. Therefore, the structure of the entire apparatus can be simplified as compared with the case where a plurality of spatial light modulators are arranged in a complicated manner, and the apparatus can be reduced in size. An image based on the color light can be smoothly projected on the screen 10 to obtain a desired image (composite image).

  Further, by arranging the exit surfaces of the projection units close to each other, the distortion of the image projected on the screen 10 from each projection unit and the color shift due to the position where the viewer views the screen 10 are minimized. The desired image can be obtained. That is, in order to uniformize the magnification at each position on the screen 10 of the image projected from the projection unit, the optical axis of the projection system 6 and the center of the screen 10 need to intersect perpendicularly. As shown in the schematic diagram of FIG. 4, the first projection unit U <b> 1 is disposed at a position facing the + X side end of the screen 10, and the second projection unit U <b> 2 is disposed at a position facing the center of the screen 10. When the third projection unit U3 is disposed at a position facing the −X side end of the screen 10, the enlargement ratio at each position on the screen 10 of the image projected from the second projection unit U2 is as follows. Although it is made uniform, the enlargement ratio at each position on the screen 10 of the image projected from the first and third projection units U1 and U3 becomes non-uniform and is projected from the first and third projection units U1 and U3. There is a high possibility that the image is distorted into a trapezoidal shape on the screen 10. Therefore, as in the present embodiment, the projection surfaces of the projection units are arranged close to each other, and the projection surfaces of the projection units are arranged at positions that oppose the center of the screen 10 as much as possible. The distortion (trapezoidal distortion) of the projected image on the screen 10 can be suppressed, and a desired composite image can be obtained.

  By the way, from the viewpoint of miniaturization (thinning) of the projector PJ, as shown in FIG. 5, the optical axis of each projection system 6 of each projection unit RUs, RUp, GUs, GUp, BUs, BUp with respect to the screen 10 Thus, a non-vertical configuration can be considered. 5A is a view of the projector PJ as seen from the side, and FIG. 5B is a view as seen from above. In the case of such a configuration, for example, as disclosed in Japanese Patent Application Laid-Open No. 2002-139794, the light exit surface of the spatial light modulator 5 is arranged in the direction perpendicular to the optical axis of the projection system 6 and the light By constructing an optical system (so-called shift optical system) that shifts the central axis of the light beam emitted from the exit surface and the optical axis of the projection system 6 with respect to the projection units RUs, RUp, GUs, GUp, BUs, BUp, The distortion on the screen 10 of the image projected from the projection units RUs, RUp, GUs, GUp, BUs, and BUp can be corrected. As an example, FIG. 6 shows a shift optical system of the projection unit GUp. FIG. 6 is a simplified illustration of the projection unit GUp. As shown in FIG. 6, the light exit surface 5 </ b> A of the spatial light modulator 5 is arranged in a direction perpendicular to the optical axis L <b> 2 of the projection system 6. Further, the light source device 1 moves from the light source device 1 to the light incident surface 5B of the spatial light modulator 5 so that the central axis (see the optical path L1) of the light beam emitted from the spatial light modulator 5 and the optical axis L2 of the projection system 6 are shifted. On the other hand, light (green light) is irradiated in a non-vertical direction.

  Further, as disclosed in JP-A-2002-139794, the central axis of the light beam emitted from the spatial light modulator 5 and the optical axis of the projection system 6 are made to coincide with each other, and the light of the spatial light modulator 5 An optical system (so-called tilt optical system) in which the exit surface is arranged non-perpendicular to the optical axis of the projection system 6 is constructed, or disclosed in Japanese Patent Laid-Open Nos. 9-326981 and 2001-61121. A desired image can be projected on the screen 10 by using the correction method as described above.

  As shown in Japanese Patent Laid-Open No. 2002-72359, an image displayed by each projection cluster is subjected to geometric deformation in advance so as to obtain a uniform projection image on the entire screen 10, and brightness unevenness is further improved. Pre-processing for correcting color unevenness is performed.

  This pre-processing is realized by a feedback system from the photographing system, but in the case of a rear projector, data for pre-processing can be obtained by observing the screen from the projection side.

  Since the projection projection cluster composed of a plurality of projection units can turn off or reduce the light source of the projection unit independently, the black level of the projection cluster can be lowered. Thereby, the projection unit projection light can realize a wide modulation dynamic range.

  In each of the above-described embodiments, each projection unit emits one of red light, green light, and blue light as basic color light, but is not limited to these color lights, and can emit arbitrary color light. it can. Since each projection unit emits substantially monochromatic basic color light, it is possible to easily adjust the color light emitted from each projection unit, and to easily increase the number of colors of the projector PJ by appropriately combining the projection units. be able to.

  In each of the above-described embodiments, a case where the image display device of the present invention is applied to a rear projection type image display device (rear projector) that projects an image from the back side of the screen 10 to the screen 10 will be described as an example. However, you may apply to the image display apparatus which projects an image with respect to a screen from the front side of a screen.

  In each of the above-described embodiments, a three-dimensional image is formed by projecting light having polarization directions orthogonal to each other with respect to one basic color light onto the screen 10, but the polarization direction is linearly polarized light. It is not limited to S-polarized light and P-polarized light, and may be right circularly polarized light and left circularly polarized light that are circularly polarized light.

  In the above-described embodiment, the case where the image display device of the present invention is applied to a stereoscopic image display device has been described as an example. However, a device that displays a two-dimensional image may be used. In this case, it is not always necessary to project light having polarization directions orthogonal to each other on the screen 10. That is, you may make it project the light which has the same polarization direction from each projection unit.

  In the above-described embodiment, an LED is used as the light source device. However, any LED that can generate basic color light may be used.

  In the above-described embodiment, a liquid crystal device (light valve) is used as the spatial light modulator, but a reflective light modulator (mirror modulator) such as DMD (Digital Micromirror Device) may be used.

1 is a schematic configuration diagram illustrating an image display device according to a first embodiment. It is a schematic block diagram which shows a projection unit. It is a figure which shows the example of a projection unit arrangement | positioning of a projection cluster. It is a figure for demonstrating a mode that the image is projected by the projection unit. It is a figure for demonstrating a mode that the image is projected by the projection unit. It is a figure for demonstrating a mode that the image is projected by the projection unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Light source device, 5 ... Spatial light modulation device, 6 ... Projection system, 10 ... Screen (1st surface), 11 ... Blending area | region, 12 ... Projection cluster, 20 ... Glasses, 21 ... S polarized light transmission film (one eye) For transmission), 22 ... P polarized light transmission film (the other eye transmission), PJ ... projector (image display device), RUs, GUs, BUs ... projection unit (first polarized projection unit), RUp, GUp, BUp ... Projection unit (second polarization projection unit).

Claims (12)

A light source device that emits basic color light, a spatial light modulation device that optically modulates the basic color light emitted from the light source device according to an image signal, and an image based on the basic color light modulated by the spatial light modulation device. A plurality of projection clusters comprising a plurality of projection units having a projection system for projecting on the first surface;
The projection unit projects a plurality of first polarization projection units for projecting images of different basic color lights of the first polarization onto the first surface, and an image of different basic color lights of the second polarization. A plurality of second polarization projection units each projecting on the surface,
An image display device that forms a composite image on the first surface by combining the images projected from the first polarization projection unit and the second polarization projection unit on the first surface.   One eye transmission unit that is projected from the first polarization projection unit and transmits only the first polarization through the first surface, and the first transmission unit that is projected from the second polarization projection unit and through the first surface. The image display device according to claim 1, further comprising eyeglasses having the other eye transmitting portion that transmits only two polarized light.   Each of the emission surface which inject | emits the said basic color light among these projection units is arrange | positioned along with the 2nd surface which has a predetermined positional relationship with respect to the said 1st surface. Image display device.   4. The image display device according to claim 3, wherein each of the emission surfaces is arranged side by side with respect to each of a first direction on the second surface and a second direction different from the first direction.   5. The image display device according to claim 3, wherein each of the emission surfaces is disposed adjacent to each other on the second surface.   A plurality of projection units that project the same basic color light are provided, and an image based on the basic color light emitted from each of the emission surfaces of the plurality of projection units that project the same basic color light is displayed on the first surface. The image display apparatus as described in any one of Claims 3-5 which project so that it may adjoin. The plurality of projection clusters include a first basic color light projection unit that projects first basic color light, a second basic color light projection unit that projects second basic color light, and a third basic color light projection unit that projects third basic color light. Including
The image according to any one of claims 3 to 6, wherein each of the emission surfaces of the first, second, and third basic color light projection units is disposed at each of the vertices of a triangle on the second surface. Display device.   The light exit surface of the spatial light modulator is disposed in a direction perpendicular to the optical axis of the projection system, and the center axis of the light beam emitted from the light exit surface is shifted from the optical axis of the projection system. The image display device according to claim 1.   The image display device according to claim 1, wherein the plurality of basic color lights include red light, green light, and blue light.   The image display device according to claim 1, wherein the spatial light modulator includes a liquid crystal device.   The image display device according to claim 1, wherein the light source device includes a light emitting diode. The image display device according to claim 1, wherein the light source device includes an independent light amount control unit.

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