JP2012151713A - Projector and projector system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector, etc. which suppress luminance deterioration in viewing without improving a refresh rate and which greatly reduces crosstalk between the right and left eyes.SOLUTION: A projector 100 comprises: a liquid crystal panel for R 128R which alternately modulates the polarization direction of first incident light on the basis of first left-eye image information and first right-eye image information; a polarizer 130R which is irradiated with first modulated light emitted from the liquid crystal panel for R 128R and transmits the components of P polarization; and a polarization control panel for R 132R which is irradiated with first transmitted light transmitted through the polarizer 130R and emits first outgoing light obtained by controlling the polarization direction of the first transmitted light to be P polarization or S polarization on a pixel-by-pixel basis. The projector 100 is capable of projecting an image using the first emitted light emitted by the polarization control panel 132R.

Description

  The present invention relates to a projector and a projector system using the projector, and more particularly to a projector and a projector system capable of displaying a stereoscopic video.

  In recent years, 3D video has attracted attention as a new method for expressing video content. In order to display 3D video, right-eye video and left-eye video are alternately displayed within one frame period of the video source, right-eye video is only for the viewer's right eye, and left-eye video is for the viewer. It needs to be shown only to the left eye. When displaying 3D video with one projector, for example, a system using liquid crystal shutter glasses can be considered.

FIG. 11 shows an outline of a configuration of a general projector system using liquid crystal shutter glasses. FIG. 11 employs a so-called liquid crystal projector as a projector constituting the projector system.
The projector system 10 includes a projector 20, liquid crystal shutter glasses 50, and a screen 60. The projector 20 includes an optical system 30, a liquid crystal panel control unit 40, a timing generation unit 42, and an infrared transmission unit 44.

The optical system 30 includes polarizing plates 31R, 31G, 31B, 33R, 33G, and 33B provided for each color light of red light (R), green light (G), and blue light (B) separated from the light source light. Liquid crystal panels 32R, 32G, 32B and λ / 2 plates 36R, 36B are provided. The polarizing plates 31R, 31B, and 33G transmit P-polarized light. The polarizing plates 31G, 33R, and 33B transmit S-polarized light. The liquid crystal panel 32R is disposed between the polarizing plate 31R and the polarizing plate 33R, the liquid crystal panel 32G is disposed between the polarizing plate 31G and the polarizing plate 33G, and the liquid crystal panel 32B is disposed between the polarizing plate 31B and the polarizing plate 33B. Placed in. The λ / 2 plate 36R is disposed on the incident side of the polarizing plate 31R and receives red light (R). The λ / 2 plate 36B is disposed on the incident side of the polarizing plate 31B and receives blue light (B).
The optical system 30 includes a cross dichroic prism 34 and a projection lens 35. The color lights emitted from the polarizing plates 33R, 33G, and 33B are combined by the cross dichroic prism 34 to form a color image, and are projected onto the screen 60 by the projection lens 35.

  The liquid crystal panel control unit 40 drives and controls the corresponding liquid crystal panel for each color light of red light (R), green light (G), and blue light (B), and performs control to modulate for each color light. The timing generation unit 42 generates a liquid crystal shutter timing corresponding to the driving timing of the liquid crystal panel control unit 40. The infrared transmitter 44 transmits the liquid crystal shutter timing generated by the timing generator 42 to the liquid crystal shutter glasses 50.

  The liquid crystal shutter glasses 50 include an infrared receiving unit 52, a liquid crystal shutter control unit 54, and a liquid crystal shutter unit 56. When the infrared receiver 52 receives the liquid crystal shutter timing transmitted by the infrared transmitter 44, the infrared receiver 52 notifies the liquid crystal shutter controller 54 of the timing. The liquid crystal shutter control unit 54 performs shutter control of the liquid crystal shutter unit 56 in synchronization with this timing.

  In such a projector system 10, the projector 20 projects the right-eye image and the left-eye image onto the screen 60 in a time division manner. The liquid crystal shutter glasses 50 perform shutter control in synchronization with the projector 20 so as to shield the left eye when the right-eye image is displayed and to shield the right eye when the left-eye image is displayed.

  However, when the screen changes on the liquid crystal panel, all the pixels constituting the screen do not change at the same timing, and when the screen is switched, the image of the previous frame and the image of the next frame are mixed.

FIG. 12 schematically shows how the screen of the liquid crystal panel is switched. FIG. 12 shows a screen of the liquid crystal panel 32R.
For example, as shown in FIG. 12, the screen of the liquid crystal panel changes so that the pixels of the image of the next frame are sequentially replaced with the pixels of the image of the previous frame. Note that FIG. 12 shows an example in which the screen changes in a zigzag from the upper left to the lower right, but the screen does not necessarily switch in this order. However, when the screen is switched, the image of the previous frame and the image of the next frame are mixed.
Therefore, if the left-eye image and the right-eye image are alternately displayed at a refresh rate that is twice the frame rate of the video source, the previous-frame image and the next-frame image are mixed, and the viewer's right-eye The image for the right eye enters, and the image for the right eye enters the left eye of the viewer. As a result, crosstalk between the left and right images occurs.

  Therefore, it is conceivable to drive the liquid crystal panel at a refresh rate four times the frame rate of the video source.

FIG. 13 is an explanatory diagram for driving the liquid crystal panel at a refresh rate four times the frame rate of the video source.
In this case, the liquid crystal panel is driven at a refresh rate four times the frame rate of the video source, and the order of right-eye image → right-eye image → left-eye image → left-eye image → right-eye image → right-eye image →. To display. Then, during the period in which the right-eye image and the left-eye image are mixed, control is performed to shield both shutters of the liquid crystal shutter glasses 50. Thereby, crosstalk can be prevented in a period in which the right-eye image and the left-eye image are mixed. Such shutter control of the liquid crystal shutter glasses 50 is disclosed in Patent Document 1, for example.

  For example, Patent Document 2 discloses a main display panel that alternately displays a left-eye image and a right-eye image, and a polarization information of the left-eye image or the right-eye image that is positioned in front of the main display panel. A stereoscopic image display device including a sub display panel is disclosed.

JP 2009-44295 A JP 2010-20274 A

However, when the shutter control of the liquid crystal shutter glasses as disclosed in Patent Document 1 is performed, a period during which light is shielded is required as shown in FIG. There is a problem that it drops to / 4.
Further, according to the technique disclosed in Patent Document 2, since the polarization information of the left-eye image or the right-eye image is changed in units of lines constituting one screen, there is a possibility that a little crosstalk remains.
In addition, when the liquid crystal panel is driven at a high refresh rate such as a quadruple speed of the video source, there is a problem that an extra load is applied to the drive system and the liquid crystal panel. For example, while many liquid crystal panels are driven at 120 Hz, video contents are often those with a frame rate of 60 Hz, and there is no problem even at 120 Hz driving if the refresh rate is double speed. However, at a refresh rate of 4 × speed, the driving is 240 Hertz, a higher speed driving system is required, and it is necessary to operate at a response speed exceeding the response limit of the conventional liquid crystal panel. For this reason, it is necessary to implement a special process for increasing the response of the liquid crystal or to use a liquid crystal panel having a high response speed.

  The present invention has been made in view of the above technical problems. According to some aspects of the present invention, it is possible to provide a projector, a projector system, or the like that suppresses a decrease in luminance during viewing and significantly reduces crosstalk between left and right images without increasing the refresh rate.

  (1) In the first aspect of the present invention, the projector alternately modulates the polarization of the first incident light based on the first left-eye image information and the first right-eye image information. A first polarizing element that is irradiated with the first modulated light emitted from the first display panel and transmits a component in the first polarization direction; and a first polarizing element that has passed through the first polarizing element. And a first polarization control panel that emits first emitted light that is irradiated with transmitted light and that controls the polarization direction of the transmitted light in units of pixels.

In this aspect, the first polarizing element, the first polarization control panel, and the first polarizing panel are arranged on the emission side of the first display panel that alternately modulates based on the first left-eye image information and the first right-eye image information. Is provided. Then, the first polarizing element transmits the component in the first polarization direction of the first modulated light emitted from the first display panel. Further, the first polarization control panel emits first emission light in which the polarization direction of the passing light is controlled in units of pixels. By projecting an image using the first emitted light, the polarization direction of the right-eye image and the polarization direction of the left-eye image can be made different.
As a result, it is possible to view stereoscopic images while greatly reducing the crosstalk between the left and right images. At this time, since the period during which the viewer's eyes are shielded from light is not necessary, the viewing luminance is ½ that when viewing 2D video, and the refresh rate of each display panel need not be increased. Furthermore, since the viewer can view stereoscopic images using inexpensive and light polarized glasses, not expensive and heavy liquid crystal shutter glasses, the cost can be reduced.

(2) In the projector according to the second aspect of the present invention, in the first aspect, the first polarization control panel is modulated based on the first left-eye image information in the first display panel. The pixel that is modulated based on the first right-eye image information in the first display panel is controlled to one of the first polarization direction and the second polarization direction. The polarization direction is controlled to the other polarization direction of the first polarization direction and the second polarization direction.
According to this aspect, the left and right images can be obtained by simple control that controls in units of pixels so that the pixels in which the left-eye image is displayed and the pixels in which the right-eye image is displayed are different in the first display panel. Crosstalk can be greatly reduced.

(3) In the projector according to the third aspect of the present invention, in the first aspect, the polarization of the second incident light is alternately modulated based on the second left-eye image information and the second right-eye image information. The second display panel, the second polarizing element that is irradiated with the modulated light emitted from the second display panel and transmits the component in the first polarization direction, and is transmitted through the second polarizing element. The second polarization control panel that emits the second emitted light that is irradiated with the second transmitted light and that controls the polarization direction of the transmitted light in units of pixels, the first emitted light, and the second emitted light And a photosynthesizing device that emits synthesized light.
According to this aspect, the right-eye image is obtained by synthesizing each outgoing light by the light synthesizing device using the display panel, the polarizing element, and the polarization control panel provided for each incident light, and projecting an image using the synthesized light. And the polarization direction of the left-eye image can be made different.
As a result, it is possible to view stereoscopic images while greatly reducing the crosstalk between the left and right images. At this time, since the period during which the viewer's eyes are shielded from light is not necessary, the viewing luminance is ½ that when viewing 2D video, and the refresh rate of each display panel need not be increased. Furthermore, since the viewer can view stereoscopic images using inexpensive and light polarized glasses, not expensive and heavy liquid crystal shutter glasses, the cost can be reduced.

(4) In the projector according to the fourth aspect of the present invention, in the third aspect, the second display panel is obtained by modulating the first display panel based on the first left-eye image information. When the first display panel is modulated based on the first right-eye image information, the polarization of the second incident light is modulated based on the second left-eye image information. The polarization of the second incident light is modulated based on the second right-eye image information, and the second polarization control panel is modulated based on the second left-eye image information in the second display panel. The pixel is controlled to be one of the first polarization direction and the second polarization direction orthogonal to the first polarization direction, and based on the second right-eye image information in the second display panel. For the pixel to be modulated Controlling the other polarization direction of the light direction and the second polarization direction.
According to this aspect, in each polarization control panel, control is performed in units of pixels such that the pixels in which the left-eye image is displayed and the pixels in which the right-eye image is displayed are orthogonal to each other on the corresponding display panel. The crosstalk between the left and right images can be greatly reduced.

  (5) In the fifth aspect of the present invention, the projector alternately modulates the polarization of the first incident light based on the first left-eye image information and the first right-eye image information. A first polarizing element that is irradiated with the first modulated light emitted from the first display panel and transmits a component in the first polarization direction; and the polarization of the second incident light is changed to the second left eye. Second display panel that alternately modulates based on the image information for the image and the second image information for the right eye, and the second modulated light emitted from the second display panel, and the first polarization direction Or a second polarization element that transmits a component in a second polarization direction orthogonal to the first polarization direction, a first transmitted light that has passed through the first polarization element, and a second polarization element Synthesizes the second transmitted light that has passed through the light, and the light synthesizer The polarization direction of the combined light and a polarization control panel for emitting outgoing light is controlled at a predetermined pixel region units.

According to this aspect, the display panel and the polarizing element provided for each incident light, the light combining device, and one polarization control panel control the polarization direction of the combined light of the light combining device in units of pixels. The polarization direction of the image and the polarization direction of the left-eye image can be made different.
As a result, it is possible to view stereoscopic images while greatly reducing the crosstalk between the left and right images. At this time, since the period during which the viewer's eyes are shielded from light is not necessary, the viewing luminance is ½ that when viewing 2D video, and the refresh rate of each display panel need not be increased. Furthermore, since the viewer can view stereoscopic images using inexpensive and light polarized glasses, not expensive and heavy liquid crystal shutter glasses, the cost can be reduced. Furthermore, only one polarization control panel is required, which can contribute to further simplification of the projector configuration.

(6) In the projector according to a sixth aspect of the present invention, in the fifth aspect, the second polarizing element transmits a component in the first polarization direction, and the second display panel When the first display panel is modulated based on the first left-eye image information, the polarization of the second incident light is modulated based on the second left-eye image information, and the first display panel When the display panel is modulated based on the first right-eye image information, the polarization direction of the second incident light is modulated based on the second right-eye image information, and the polarization control panel is In synchronization with driving of the first display panel and the second display panel, the polarization direction of the combined light is controlled in units of pixels in the first polarization direction or the second polarization direction.
In this aspect, the modulation is performed on the basis of the right-eye image information on each display panel, and the modulation is performed on the basis of the left-eye image information. In the polarization control panel, the crosstalk between the left and right images using the combined light can be greatly reduced by simple control that controls the polarization direction of the combined light in units of pixels in synchronization with the drive of the display panel. become.

(7) In the projector according to a seventh aspect of the present invention, in the fifth aspect, the second polarizing element transmits a component in the second polarization direction, and the second display panel When the first display panel is modulated based on the first left-eye image information, the polarization of the second incident light is modulated based on the second right-eye image information. When the display panel is modulated based on the first right-eye image information, the polarization direction of the second incident light is modulated based on the second left-eye image information, and the polarization control panel is The polarization direction of the combined light is controlled in units of pixels in synchronization with driving of the first display panel and the second display panel.
According to this aspect, even if different polarization directions are made incident on the light combining device, the cross-talk between the left and right images using the combined light is greatly improved by simple control by devising the drive control of each display panel. Will be able to be reduced.

(8) A projector according to an eighth aspect of the present invention includes, in any one of the third to seventh aspects, a λ / 4 plate disposed on an emission side of the photosynthesis device.
According to this aspect, it is possible to provide a projector that suppresses a decrease in luminance during viewing and increases the crosstalk between the left and right images significantly without increasing the refresh rate. Furthermore, even when the viewer tilts his / her head or lies down, the viewer can provide a projector that can view stereoscopic images without crosstalk.

(9) According to a ninth aspect of the present invention, a projector system includes the projector according to any one of the first to seventh aspects, and polarized glasses having different polarization directions for the left eye and the right eye.
According to this aspect, it is possible to provide a projector system that suppresses a decrease in luminance during viewing and increases the crosstalk between the left and right images significantly without increasing the refresh rate.

(10) According to a tenth aspect of the present invention, a projector system includes the projector according to the eighth aspect, and circularly polarized eyeglasses in which the rotational directions of circularly polarized light are different between the right eye and the left eye.
According to this aspect, it is possible to provide a projector system that suppresses a decrease in luminance during viewing and increases the crosstalk between the left and right images significantly without increasing the refresh rate. Furthermore, it is possible to provide a projector system that allows a viewer to view a stereoscopic image without crosstalk even when the head is tilted or lies down.

(11) A projector system according to an eleventh aspect of the present invention includes the polarization preserving screen in the ninth aspect or the tenth aspect.
According to this aspect, it is possible to provide a projector system that suppresses a decrease in luminance during viewing and increases the crosstalk between the left and right images significantly without increasing the refresh rate.

1 is a diagram illustrating a configuration example of a projector system according to a first embodiment of the present invention. The figure which shows a part of structure of the projector which comprises the projector system of FIG. FIG. 3A is an explanatory diagram of an R polarization control panel when no voltage is applied between a pair of glass substrates. FIG. 3B is an explanatory diagram of the R polarization control panel when a voltage is applied between a pair of glass substrates. FIG. 4A is an explanatory diagram of a control example of the liquid crystal panel control unit and the polarization control panel control unit when switching from the left-eye image to the right-eye image. FIG. 4B is an explanatory diagram of a control example of the liquid crystal panel control unit and the polarization control panel control unit when switching from the right-eye image to the left-eye image. The figure which shows the relationship between the projection image in this embodiment, and the image viewed with polarized glasses. FIG. 10 is a diagram illustrating a part of the configuration of an optical system of a projector according to a second embodiment. FIG. 10 is a diagram illustrating a part of the configuration of an optical system of a projector according to a third embodiment. Explanatory drawing of the example of control of the liquid crystal panel control part in 3rd Embodiment, and a polarization control panel control part. The figure which shows the structural example of the projector system in 4th Embodiment. The figure which shows the structural example of the projector system in the modification of 4th Embodiment. The figure which shows the outline | summary of a structure of the general projector system using liquid-crystal shutter glasses. The figure which shows typically the mode at the time of the switching of the screen of a liquid crystal panel. Explanatory drawing in the case of driving a liquid crystal panel at the refresh rate 4 times the frame rate of a video source.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below do not unduly limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily indispensable configuration requirements for solving the problems of the present invention.

[First Embodiment]
FIG. 1 shows a configuration example of a projector system according to the first embodiment of the present invention.
FIG. 2 shows a part of the configuration of the projector constituting the projector system of FIG. In FIG. 2, the same parts as those in FIG.
The projector system 80 according to the first embodiment includes a projector 90, polarized glasses 200, and a polarization preserving screen 210. The projector 90 includes the optical system 100, a liquid crystal panel control unit 190, and a polarization control panel control unit 192. The projector 90 modulates the light from the light source according to the image information, and controls the polarization direction (polarization state in a broad sense) by a predetermined pixel area unit (specifically, one pixel unit) to thereby convert the optical image. The formed optical image is projected onto the polarization preserving screen 210.

  The optical system 100 includes a light source 110, integrator lenses 112 and 114, a polarization conversion element 116, a superimposing lens 118, an R dichroic mirror 120R, a G dichroic mirror 120G, and a reflection mirror 122. The optical system 100 includes an R field lens 124R, a G field lens 124G, polarizing plates 126R, 126G, and 126B, an R liquid crystal panel 128R, a G liquid crystal panel 128G, a B liquid crystal panel 128B, and polarizing plates 130R and 130G. , 130B. Further, the optical system 100 includes an R polarization control panel 132R, a G polarization control panel 132G, a B polarization control panel 132B, a relay optical system 140, a cross dichroic prism 160, and a projection lens 170. The relay optical system 140 includes relay lenses 142, 144, and 146 and reflection mirrors 148 and 150.

  The R liquid crystal panel 128R, the G liquid crystal panel 128G, and the B liquid crystal panel 128B are transmissive liquid crystal display devices (display panels). The R polarization control panel 132R, the G polarization control panel 132G, and the B polarization control panel 132B are the same as the corresponding liquid crystal panels among the R liquid crystal panel 128R, the G liquid crystal panel 128G, and the B liquid crystal panel 128B. Can be used.

The positions of the R liquid crystal panel 128R and the R polarization control panel 132R are adjusted so that each pixel of the R liquid crystal panel 128R corresponds to each pixel of the R polarization control panel 132R on the optical path of red light (R). Has been.
Similarly, the G liquid crystal panel 128G and the G polarization control panel 132G are arranged so that each pixel of the G liquid crystal panel 128G corresponds to each pixel of the G polarization control panel 132G on the optical path of green light (G). The position has been adjusted.
Similarly, the B liquid crystal panel 128B and the B polarization control panel 132B are arranged so that each pixel of the B liquid crystal panel 128B corresponds to each pixel of the B polarization control panel 132B on the optical path of blue light (B). The position has been adjusted.

  The light source 110 is composed of, for example, an ultra-high pressure mercury lamp, and emits light including at least red light (R), green light (G), and blue light (B). The integrator lens 112 has a plurality of small lenses for dividing the light from the light source 110 into a plurality of partial lights. The integrator lens 114 has a plurality of small lenses corresponding to the plurality of small lenses of the integrator lens 112. The superimposing lens 118 superimposes the partial light emitted from the plurality of small lenses of the integrator lens 112 on each liquid crystal panel.

  The polarization conversion element 116 has a polarization beam splitter array and a λ / 2 plate, and converts light from the light source 110 into substantially one type of polarized light. The polarization beam splitter array has a structure in which a polarization separation film that separates the partial light divided by the integrator lens 112 into P polarization and S polarization, and a reflection film that changes the direction of light from the polarization separation film are alternately arranged. Have P-polarized light is a component parallel to the light incident surface. S-polarized light is a component perpendicular to the light exit surface. The polarization direction of the two types of polarized light separated by such a polarization separation film is aligned by the λ / 2 plate. The superimposing lens 118 is irradiated with light (S-polarized light) converted into substantially one type of polarized light by the polarization conversion element 116.

  The light from the superimposing lens 118 enters the R dichroic mirror 120R. The R dichroic mirror 120R is disposed with an inclination of approximately 45 degrees with respect to the optical path center axis, and has a function of reflecting red light (R) and transmitting green light (G) and blue light (B). The light transmitted through the R dichroic mirror 120R is applied to the G dichroic mirror 120G, and the light reflected by the R dichroic mirror 120R is reflected by the reflection mirror 122 and guided to the R field lens 124R.

  The G dichroic mirror 120G is disposed at an inclination of about 45 degrees with respect to the optical path center axis, and has a function of reflecting green light (G) and transmitting blue light (B). The light transmitted through the G dichroic mirror 120G enters the relay optical system 140, and the light reflected by the G dichroic mirror 120G is guided to the G field lens 124G.

  In the relay optical system 140, in order to minimize the difference between the optical path length of the blue light (B) transmitted through the G dichroic mirror 120G and the optical path lengths of the other red light (R) and green light (G), The difference in optical path length is corrected using the lenses 142, 144, and 146. The light transmitted through the relay lens 142 is guided to the relay lens 144 by the reflection mirror 148. The light transmitted through the relay lens 144 is guided to the relay lens 146 by the reflection mirror 150.

  The light applied to the R field lens 124R is converted into parallel light and is incident on the polarizing plate 126R. The light applied to the G field lens 124G is converted into parallel light and is incident on the polarizing plate 126G. The light converted into parallel light by the relay lenses 142, 144, and 146 is incident on the polarizing plate 126B.

  As shown in FIG. 2, the polarizing plates 126R, 126G, and 126B irradiate a liquid crystal panel provided corresponding to each polarizing plate with S-polarized light. The R liquid crystal panel 128R, the G liquid crystal panel 128G, and the B liquid crystal panel 128B to which the light emitted from the polarizing plates 126R, 126G, and 126B is irradiated are each independently based on image information from the liquid crystal panel control unit 190. Controlled. Each liquid crystal panel has an image forming area in which a liquid crystal, which is an electro-optical material, is hermetically sealed in a pair of transparent glass substrates. In the image forming area, the alignment state of the liquid crystal is controlled according to input image information Is done. Thereby, each liquid crystal panel can modulate the polarization | polarized-light of the emitted light of a corresponding polarizing plate.

The R liquid crystal panel 128R (first display panel) is based on R left-eye image information (first left-eye image information) and R right-eye image information (first right-eye image information). The polarization of the S-polarized incident light (first incident light) from the polarizing plate 126R is modulated.
Modulated light (first modulated light) from the R liquid crystal panel 128R is applied to the polarizing plate 130R. The polarizing plate 130R (first polarizing element) transmits the P-polarized component of the modulated light and absorbs other components.
The P-polarized light (first transmitted light) transmitted through the polarizing plate 130R is applied to the R polarization control panel 132R (first polarization control panel).
Based on the control information from the polarization control panel control unit 192, the R polarization control panel 132R controls the rotation or maintenance of the polarization direction of the passing light for each pixel, and controls the polarization direction of the passing light. The R polarization control panel 132R emits outgoing light (first outgoing light) whose polarization direction is controlled in units of pixels to be P-polarized light or S-polarized light (second polarization direction orthogonal to the first polarization direction). . The light emitted from the R polarization control panel 132R is applied to the cross dichroic prism 160.

Similarly, the G liquid crystal panel 128G (second display panel) includes G left-eye image information (second left-eye image information) and G right-eye image information (second right-eye image information). Based on the above, the polarization of the S-polarized incident light (second incident light) from the polarizing plate 126G is modulated.
Modulated light (second modulated light) from the G liquid crystal panel 128G is applied to the polarizing plate 130G. Polarizing plate 130G (second polarizing element) transmits the P-polarized component of the modulated light and absorbs other components.
The P-polarized light (second transmitted light) transmitted through the polarizing plate 130G is applied to the G polarization control panel 132G (second polarization control panel).
Based on the control information from the polarization control panel control unit 192, the G polarization control panel 132G controls the rotation or maintenance of the polarization direction of the passing light for each pixel, and controls the polarization direction of the passing light. The G polarization control panel 132G emits outgoing light (second outgoing light) whose polarization direction is controlled in units of pixels to P-polarized light or S-polarized light. The light emitted from the G polarization control panel 132G is applied to the cross dichroic prism 160.

The B liquid crystal panel 128B (third display panel) is based on the B left eye image information (third left eye image information) and the B right eye image information (third right eye image information). The polarization of the S-polarized incident light (third incident light) from the polarizing plate 126B is modulated.
Modulated light (third modulated light) from the B liquid crystal panel 128B is applied to the polarizing plate 130B. Polarizing plate 130B (third polarizing element) transmits the P-polarized component of the modulated light and absorbs other components.
The P-polarized light (third transmitted light) transmitted through the polarizing plate 130B is applied to the B polarization control panel 132B (third polarization control panel).
Based on the control information from the polarization control panel control unit 192, the B polarization control panel 132B controls the rotation or maintenance of the polarization direction of the passing light for each pixel, and controls the polarization direction of the passing light. The B polarization control panel 132B emits outgoing light (third outgoing light) whose polarization direction is controlled in units of pixels to P-polarized light or S-polarized light. Light emitted from the B polarization control panel 132B is applied to the cross dichroic prism 160.

The cross dichroic prism 160 (photosynthesis device, color synthesis device) is formed by bonding four right-angle prisms, and has a substantially square shape in plan view. In the cross dichroic prism 160, a dielectric multilayer film is formed at the interface where right-angle prisms are bonded together, and each is formed to be an R reflecting dichroic mirror and a B reflecting dichroic mirror.
Therefore, by making the outgoing light of the R polarization control panel 132R enter the cross dichroic prism 160 from the direction shown in FIG. 1 or FIG. 2, the S-polarized light of this outgoing light is reflected by the interface of the cross dichroic prism 160.
Further, by allowing the outgoing light of the G polarization control panel 132G to enter the cross dichroic prism 160 from the direction shown in FIG. 1 or 2, the cross dichroic prism 160 can be transmitted as it is.
Further, by making the outgoing light of the B polarization control panel 132B incident on the cross dichroic prism 160 from the direction shown in FIG. 1 or FIG. 2, the S-polarized light of this outgoing light is reflected by the interface of the cross dichroic prism 160.
As described above, the cross dichroic prism 160 has a function of emitting combined light obtained by combining the emitted lights of the R polarization control panel 132R, the G polarization control panel 132G, and the B polarization control panel 132B.
The projection lens 170 projects an optical image formed by the combined light of the cross dichroic prism 160 onto the polarization preserving screen 210.

  Here, for example, the R liquid crystal panel 128R is a first display panel, the polarizing plate 130R is a first polarization element, and the R polarization control panel 132R is a first polarization control panel. Further, for example, the G liquid crystal panel 128G is a second display panel, the polarizing plate 130G is a second polarizing element, and the G polarization control panel 132G is a second polarization control panel. At this time, the projector 90 includes a first display panel, a first polarization element, a first polarization control panel, a second display panel, a second polarization element, and a second polarization control panel. And a photosynthesis device.

  The polarizing glasses 200 have different polarization directions for the left eye and the right eye. In FIG. 1, it is assumed that the left eye of polarized glasses 200 transmits P-polarized light and the right eye transmits S-polarized light. The viewer wears such polarized glasses 200 and sees the image projected on the polarization preserving screen 210.

  3A and 3B are explanatory diagrams of the R polarization control panel 132R. 3A and 3B show the outline of the operation of the R polarization control panel 132R, but the operations of the G polarization control panel 132G and the B polarization control panel 132B are the same.

  The R polarization control panel 132R is realized by, for example, a VA (Vertical Alignment) mode liquid crystal panel. Therefore, the polarization control panel 132R has a polarization control region in which a liquid crystal as an electro-optical material is hermetically sealed in a pair of transparent glass substrates. In the polarization control region, the orientation of the liquid crystal is determined according to the input control information. The state is controlled.

As shown in FIG. 3A, when no voltage is applied between the pair of glass substrates, when linearly polarized incident light is incident on the polarization control panel 132R, the liquid crystal molecules are aligned vertically on the glass substrate. Therefore, the refractive index of the passing light exhibits an isotropic property. Therefore, the polarization direction of the emitted light from the R polarization control panel 132R does not change from the polarization direction of the incident light.
On the other hand, as shown in FIG. 3B, when a predetermined voltage is applied between a pair of glass substrates, the orientation of the liquid crystal molecules lies in the horizontal direction with respect to the glass substrate, so that the refraction of the passing light The rate becomes anisotropic. The retardation Δn × d generated at this time can be controlled by the applied voltage V. When the applied voltage V is adjusted so as to satisfy Δn × d = λ / 2, the polarization direction of the emitted light changes in a direction orthogonal to the polarization direction of the incident light.

  That is, the R polarization control panel 132R can perform control to rotate the polarization direction for a pixel to which a voltage is applied and maintain the polarization direction for a pixel to which no voltage is applied. Thus, the R polarization control panel 132R can control the rotation or maintenance of the polarization direction of the passing light in units of pixels, and can perform control to change the polarization direction of the emitted light in units of pixels.

  3A and 3B, an example in which the R polarization control panel 132R is realized by a VA mode liquid crystal panel has been described. However, the first embodiment is limited to this. is not. For example, the R polarization control panel 132R may be realized by a TN (Twisted Nematic) mode liquid crystal panel or an STN (Super Twisted Nematic) mode liquid crystal panel. Contrary to the VA mode liquid crystal panel, the TN mode liquid crystal panel and the STN mode liquid crystal panel are designed so that Δn × d = approximately λ / 2 when no voltage is applied. When no voltage is applied, the polarization direction of the emitted light is perpendicular to the polarization direction of the incident light. On the other hand, when a voltage is applied so that Δn × d = λ, the polarization direction of the emitted light becomes the same as the polarization direction of the incident light.

  That is, the R polarization control panel 132R can be realized by any of a VA mode liquid crystal panel, a TN mode liquid crystal panel, and an STN mode liquid crystal panel. In any case, the polarization control panel control unit 192 controls the voltage applied to each pixel of the R polarization control panel 132R so that the polarization direction of the emitted light is parallel to the polarization direction of the incident light. It becomes possible to control whether or not the direction of polarization of incident light is orthogonal. The G polarization control panel 132G and the B polarization control panel 132B are the same as the R polarization control panel 132R.

  In the above configuration, the image generation apparatus (not shown) generates left-eye image information and right-eye image information for each color light. The liquid crystal panel control unit 190 alternately modulates the polarization direction of the incident light of each color liquid crystal panel based on the left-eye image information and the right-eye image information of each color light. The polarization control panel control unit 192 controls the polarization direction in units of pixels in synchronization with the driving based on the left-eye image information and the right-eye image information of the corresponding liquid crystal panel.

  4A and 4B are explanatory diagrams of control examples of the liquid crystal panel control unit 190 and the polarization control panel control unit 192. FIG. FIG. 4A shows an explanatory diagram of a control example of the liquid crystal panel control unit 190 and the polarization control panel control unit 192 when switching from the left-eye image to the right-eye image. FIG. 4B is an explanatory diagram of a control example of the liquid crystal panel control unit 190 and the polarization control panel control unit 192 when switching from the right-eye image to the left-eye image.

The liquid crystal panel control unit 190 drives each of the R liquid crystal panel 128R, the G liquid crystal panel 128G, and the B liquid crystal panel 128B at the same timing based on the image information (left eye image information) of the left eye image of each color. .
Subsequently, as illustrated in FIG. 4A, the liquid crystal panel control unit 190 performs the R liquid crystal panel 128R, the G liquid crystal panel based on the image information (right eye image information) of the right eye image corresponding to each color. The 128G and B liquid crystal panels 128B are driven at the same timing. For example, when the R liquid crystal panel 128R modulates the polarization direction of the incident light based on the left-eye image information for R, the G liquid crystal panel 128G uses the polarization of the incident light based on the left-eye image information for G. Modulate direction. When the R liquid crystal panel 128R modulates the polarization direction of the incident light based on the R right eye image information, the G liquid crystal panel 128G uses the G right eye image information to polarize the incident light. Modulate direction.

  At this time, the polarization control panel control unit 192 controls the polarization direction in units of pixels in synchronization with the drive timing of the corresponding liquid crystal panel based on the control information corresponding to the polarization control panel of each color. To do. Specifically, the polarization control panel control unit 192 synchronizes with the driving timing of the corresponding liquid crystal panel, and the pixel on which the right-eye image is displayed is polarized to S-polarized light, and the pixel on which the left-eye image is displayed is Each polarization control panel is controlled in units of pixels so as to be polarized to P-polarized light.

  Similarly, after the liquid crystal panel control unit 190 drives each liquid crystal panel based on the image information of the right eye image, as shown in FIG. 4B, based on the image information of the left eye image corresponding to each color. Each liquid crystal panel is driven at the same timing. Also at this time, the polarization control panel control unit 192 is synchronized with the driving timing of the corresponding liquid crystal panel based on the control information, and the pixel on which the right-eye image is displayed is polarized to S-polarized light and the left-eye image is displayed. Each polarization control panel is controlled in units of pixels so that the pixels are polarized to P-polarized light.

In other words, the R polarization control panel 132R can control the pixel modulated based on the left-eye image information in the R liquid crystal panel 128R in one polarization direction of P-polarized light and S-polarized light. The R polarization control panel 132R can control the pixel modulated based on the right-eye image information in the R liquid crystal panel 128R in the other polarization direction of P-polarized light and S-polarized light.
The G polarization control panel 132G can control a pixel modulated based on the left-eye image information in the G liquid crystal panel 128G in one polarization direction of P-polarized light and S-polarized light. The G polarization control panel 132G can control the pixel modulated based on the right-eye image information in the G liquid crystal panel 128G in the other polarization direction of P-polarized light and S-polarized light.
The B polarization control panel 132B can control the pixel modulated based on the left-eye image information in the B liquid crystal panel 128B in one polarization direction of P-polarized light and S-polarized light. The B polarization control panel 132B can control the pixel modulated based on the right-eye image information in the B liquid crystal panel 128B in the other polarization direction of P-polarized light and S-polarized light.

FIG. 5 shows a relationship between a projected image projected on the polarization preserving screen 210 by the projector 90 in this embodiment and an image viewed with the polarized glasses 200.
As described above, the viewer watches the image projected on the polarization preserving screen 210 using the polarized light whose polarization is controlled in units of pixels, with the viewer wearing the polarized glasses 200. At this time, the viewer sees the right-eye image with only S-polarized light for the right eye and the left-eye image with only P-polarized light for the left eye. Therefore, the viewer can view 3D video without crosstalk between the left and right images.

As described above, according to the first embodiment, the viewer can see the right-eye image with only the S-polarized light in the right eye and the left-eye image with only the P-polarized light in the left eye. 3D video can be viewed without any changes.
At this time, a period during which the viewer's eyes are shielded from light is not required, so that the viewing luminance can be halved compared to when viewing 2D video, and the refresh rate of each liquid crystal panel can simply be double speed.
Furthermore, the viewer can view the 3D image as described above by using cheap and light polarized glasses, not expensive and heavy liquid crystal shutter glasses.

In the first embodiment, the projector that projects a color image obtained by combining the red light (R), the green light (G), and the blue light (B) in the cross dichroic prism 160 has been described as an example. However, the present invention is not limited thereto. Is not to be done.
For example, the projector may be a projector that projects 3D video with the configuration in which the cross dichroic prism 160 is omitted. In this case, for example, a 3D image can be projected using the R liquid crystal panel 128R, the polarizing plate 130R, and the R polarization control panel 132R.
Alternatively, for example, a projector that projects a color image obtained by combining two or four or more types of color light may be used. When combining two types of color light, for example, an R liquid crystal panel 128R, a polarizing plate 130R, an R polarization control panel 132R, a G liquid crystal panel 128G, a polarizing plate 130G, and a G polarization control panel 132G are used. Can be projected.
In any configuration, it is possible to suppress a decrease in luminance during viewing and to significantly reduce crosstalk between the left and right images without increasing the refresh rate.

[Second Embodiment]
In the first embodiment, the polarization control panel is provided for each color light. However, the same effect can be obtained in a configuration in which one polarization control panel is arranged on the exit side of the cross dichroic prism 160.
The projector and the configuration of the projector according to the second embodiment are substantially the same as those in FIG. 1 except for a part of the optical system of the projector, and therefore only the differences will be described.

FIG. 6 shows a part of the configuration of the optical system of the projector in the second embodiment. In FIG. 6, the same parts as those in FIG.
The configuration of the projector in the second embodiment is different from the configuration of the projector in the first embodiment as follows.
First, the R polarization control panel 132R, the G polarization control panel 132G, and the B polarization control panel 132B are omitted.
Second, the polarization control panel 132 is disposed on the exit side of the cross dichroic prism 160 and on the incident side of the projection lens 170. As the polarization control panel 132, the same one as the R polarization control panel 132R described with reference to FIGS. 3A and 3B can be employed.

  That is, the projector according to the second embodiment uses the first transmitted light transmitted through the polarizing plate 130R as the first polarizing element and the second transmitted light transmitted through the polarizing plate 130G as the second polarizing element. A cross dichroic prism 160 to be combined is provided. The polarization control panel 132 then emits outgoing light in which the rotation or maintenance of the polarization direction of the combined light combined by the cross dichroic prism 160 is controlled in a predetermined pixel area unit (specifically, one pixel unit).

  Also in the configuration shown in FIG. 6, polarizing plates 130R, 130G, and 130B are arranged so that each color light incident on the cross dichroic prism 160 is polarized in the same direction. The light emitted from the cross dichroic prism 160 is color-combined and becomes a composite light having a uniform polarization direction. Therefore, it is possible to control the polarization control panel 132 in synchronization with the driving of the R liquid crystal panel 130R, the G liquid crystal panel 130G, and the B liquid crystal panel 130B, thereby controlling the P polarization or the S polarization for each pixel. . Specifically, as in the first embodiment, the polarization control panel 132 is polarization controlled so that the pixels of the right-eye image are S-polarized light and the pixels of the left-eye image are P-polarized light. As a result, the 3D image can be visually recognized by viewing the image projected on the polarization preserving screen 210 with the polarized glasses 200.

  As described above, according to the second embodiment, the same effect as that of the first embodiment can be obtained. Moreover, according to the second embodiment, since the polarization control panel can be used in common for each color light, it is possible to contribute to the reduction of components.

  Also in the second embodiment, for example, a projector that projects a color image obtained by combining two or four or more types of color light may be used. When two types of color light are combined, a 3D image can be projected using, for example, the R liquid crystal panel 128R, the polarizing plate 130R, the G liquid crystal panel 128G, the polarizing plate 130G, and the polarization control panel 132.

[Third Embodiment]
In the second embodiment, each color light incident on the cross dichroic prism 160 is polarized in the same direction, but the polarization direction of each incident color light may be different.
The projector and the configuration of the projector in the third embodiment are substantially the same as those of the second embodiment except for a part of the optical system of the projector, and therefore only the differences will be described.

FIG. 7 shows a part of the configuration of the optical system of the projector in the third embodiment. In FIG. 7, the same parts as those in FIG.
The configuration of the projector in the third embodiment is different from the configuration of the projector in the second embodiment as follows.
First, in place of the polarizing plate 126R, the polarizing direction of the polarizing plate 126R is changed from S-polarized light to P-polarized light, and the polarizing direction of the polarizing plate 130R is changed from P-polarized light to S-polarized light. This is the point that the polarizing plate 130Ra changed to is provided.
Second, instead of the polarizing plate 126B, the polarizing direction of the polarizing plate 126B is changed from S-polarized light to P-polarized light, and the polarizing direction of the polarizing plate 130B is changed from P-polarized light to S-polarized light. This is the point that the polarizing plate 130Ba changed to is provided.
The third point is that the λ / 2 plate 134R is disposed on the incident side of the polarizing plate 126Ra, and the λ / 2 plate 134B is disposed on the incident side of the polarizing plate 126Ba. The λ / 2 plate 134R is disposed between the R field lens 124R and the polarizing plate 126Ra in FIG. The λ / 2 plate 134B is disposed between the relay lens 146 and the polarizing plate 126Ba in FIG.

FIG. 8 is an explanatory diagram of a control example of the liquid crystal panel control unit and the polarization control panel control unit in the third embodiment.
In the third embodiment, the liquid crystal panel control unit modulates the R liquid crystal panel 128R, the B liquid crystal panel 128B, and the G liquid crystal panel 128G based on different left and right image information. Specifically, when the R liquid crystal panel 128R (first display panel) and the B liquid crystal panel 128B are modulated based on the left-eye image information (first left-eye image information) of each color, the liquid crystal panel The control unit modulates the G liquid crystal panel 128G (second display panel) based on the G right-eye image information (second right-eye image information).
The liquid crystal panel control unit controls the G liquid crystal panel 128G when the R liquid crystal panel 128R and the B liquid crystal panel 128B are modulated based on the right-eye image information (first right-eye image information) of each color. , Modulation based on left-eye image information for G (second left-eye image information).

At this time, the polarization control panel control unit controls the polarization control panel 132 for the pixels in which the R liquid crystal panel 128R and the B liquid crystal panel 128B modulate the left-eye image and the G liquid crystal panel 128G modulates the right-eye image. Control (ON control) to rotate the polarization direction. As a result, the polarization direction of the light passing through the polarization control panel 132 is rotated, the P-polarized pixel is changed to S-polarized light, and the S-polarized pixel is changed to P-polarized light.
The polarization control panel control unit controls the polarization control panel 132 for the pixels in which the R liquid crystal panel 128R and the B liquid crystal panel 128B modulate the right-eye image and the G liquid crystal panel 128G modulates the left-eye image. Control (off control) to maintain the direction. As a result, the P-polarized pixel is emitted as P-polarized light as it is, and the S-polarized pixel is emitted as S-polarized light as it is.

  By doing so, the right eye image of only S-polarized light can be seen by the viewer's right eye through the polarized glasses 200, and the right eye image of each color only of the P-polarized light can be seen by the viewer's left eye. Therefore, according to the third embodiment, the same effect as in the second embodiment can be obtained.

[Fourth Embodiment]
In the first to third embodiments, an example in which a viewer views a 3D image with linearly polarized glasses has been described. However, the present invention is not limited to this. In the fourth embodiment, the viewer can watch 3D video with circularly polarized glasses.

FIG. 9 shows a configuration example of the projector system in the fourth embodiment. 9, parts that are the same as those in FIG. 1 are given the same reference numerals, and descriptions thereof will be omitted as appropriate.
A projector system 80a according to the fourth embodiment includes a projector 90a, circularly polarized glasses 220, and a polarization preserving screen 210. The projector 90a includes an optical system 100a, a liquid crystal panel control unit 190, and a polarization control panel control unit 192. The configuration of the optical system 100a is different from the configuration of the optical system 100 of FIG. 1 in that a λ / 4 plate 136 is disposed on the emission side of the projection lens 170. As a result, the P-polarized light and the S-polarized light of the projection light, which is the light emitted from the projection lens 170, become circularly polarized light that rotates in opposite directions.

  In the circularly polarized glasses 220, the turning direction of circularly polarized light differs between the right eye and the left eye. Therefore, as in the first embodiment, when a 3D image on the polarization preserving screen 210 is projected and the viewer views the image via the circularly polarized glasses 220, the 3D image can be viewed. At this time, even if the viewer tilts his / her head or lies down, the viewer can view the video without crosstalk.

  In FIG. 9, the projector system 80a according to the fourth embodiment is configured using the projector 90 according to the first embodiment. However, the projector according to the second embodiment or the third embodiment is applied. Also good.

[Modification of Fourth Embodiment]
In the fourth embodiment, the λ / 4 plate 136 is disposed on the exit side of the projection lens 170, but the present invention is not limited to this.
FIG. 10 shows a configuration example of a projector system in a modification of the fourth embodiment. 10, parts that are the same as those in FIG. 9 are given the same reference numerals, and descriptions thereof will be omitted as appropriate.
The projector system 80b according to the modification of the fourth embodiment includes a projector 90b, circularly polarized glasses 220, and a polarization preserving screen 210. The projector 90b includes an optical system 100b, a liquid crystal panel control unit 190, and a polarization control panel control unit 192. The configuration of the optical system 100 b is different from the configuration of the optical system 100 a in FIG. 9 in that a λ / 4 plate 136 is disposed on the exit side of the cross dichroic prism 160 and on the incident side of the projection lens 170. is there. The λ / 4 plate 136 is irradiated with combined light whose polarization is controlled in units of pixels.

  Also in the present modification, as in the fourth embodiment, when a 3D image of the polarization preserving screen 210 is projected and the viewer views the image through the circularly polarized glasses 220, the 3D image can be viewed. At this time, even if the viewer tilts his / her head or lies down, the viewer can view the video without crosstalk.

  As described above, the projector and the projector system according to the present invention have been described based on any one of the above embodiments, but the present invention is not limited to any of the above embodiments. The present invention can be implemented in various modes without departing from the gist thereof, and for example, the following modifications are possible.

  (1) In any of the above embodiments, the right-eye image is described as S-polarized light and the left-eye image is described as P-polarized light. However, the present invention is not limited to this. For example, the right-eye image may be P-polarized light and the left-eye image may be S-polarized light.

  (2) In the second embodiment, the example in which the cross dichroic prism 160 is irradiated with each color light in alignment with the P-polarized light has been described, but the present invention is not limited to this. For example, the cross dichroic prism 160 may be irradiated with each color light aligned with S-polarized light.

  (3) In any of the above-described embodiments, a configuration in which a liquid crystal panel is provided for each of RGB has been described as an example, but the present invention is not limited to this. The projector according to the present invention may be composed of two display panels (liquid crystal panels).

  (4) In any of the above-described embodiments, an example in which the projector constituting the projector system is a liquid crystal projector using a transmissive liquid crystal panel has been described, but the present invention is not limited to this. For example, the projector according to the present invention may use a reflective liquid crystal panel.

  (5) In any one of the above embodiments, the projector system has been described by taking a rear projection type system as an example, but the present invention is not limited to this. For example, the projector system according to the present invention may be a front projection type system.

  (6) In the second embodiment or the third embodiment, a lens may be provided, and the polarization control panel may be disposed at the imaging position of the intermediate image. At this time, the polarization control panel may be configured to be detachable.

  (7) In any of the above embodiments, the present invention has been described as a projector, a projector system, and the like, but the present invention is not limited to this. For example, the present invention may be a liquid crystal panel modulation control method, a polarization control panel control method, a program in which processing procedures of these control methods are described, or a recording medium on which the program is recorded.

10, 80, 80a, 80b ... projector system,
20, 90, 90a, 90b ... projector, 30, 100 ... optical system,
31R, 31G, 31B, 33R, 33G, 33B, 126R, 126Ra, 126G, 126B, 126Ba ... Polarizing plate, 32R, 32G, 32B ... Liquid crystal panel,
34 ... Cross dichroic prism, 35 ... Projection lens,
36R, 36B, 134R, 134B ... λ / 2 plate, 40,190 ... Liquid crystal panel control unit,
42 ... Timing generator 44 ... Infrared transmitter 50 ... Liquid crystal shutter glasses,
52 ... Infrared receiving unit, 54 ... Liquid crystal shutter control unit, 56 ... Liquid crystal shutter unit,
60 ... screen, 110 ... light source, 112, 114 ... integrator lens,
116: Polarization conversion element, 118 ... Superposition lens,
120R ... Dichroic mirror for R, 120G ... Dichroic mirror for G,
122, 148, 150 ... reflection mirror, 124R ... field lens for R,
124G ... G field lens, 128R ... R liquid crystal panel (first display panel),
128G ... Liquid crystal panel for G (second display panel),
128B ... Liquid crystal panel for B (third display panel),
130R, 130Ra ... polarizing plate (first polarizing element),
130G ... Polarizing plate (second polarizing element),
130B, 130Ba ... polarizing plate (third polarizing element), 132 ... polarization control panel,
132R ... R polarization control panel (first polarization control panel),
132G ... G polarization control panel (second polarization control panel),
132B ... B polarization control panel (third polarization control panel), 136 ... λ / 4 plate,
140: Relay optical system, 142, 144, 146 ... Relay lens,
160: Cross dichroic prism, 170 ... Projection lens,
192: Polarization control panel control unit, 200: Polarized glasses,
210: Polarized light preserving screen, 220: Circularly polarized glasses

Claims (11)

A first display panel that alternately modulates the polarization of the first incident light based on the first left-eye image information and the first right-eye image information;
A first polarizing element that is irradiated with the first modulated light emitted from the first display panel and transmits a component in the first polarization direction;
And a first polarization control panel that emits first outgoing light that is irradiated with the first transmitted light that has passed through the first polarizing element and that controls the polarization direction of the transmitted light in units of pixels. Projector. In claim 1,
The first polarization control panel includes:
The pixel modulated based on the first image information for the left eye in the first display panel has one polarization direction of the first polarization direction and a second polarization direction orthogonal to the first polarization direction. Control
A projector that controls a pixel modulated based on the first right-eye image information in the first display panel to the other polarization direction of the first polarization direction and the second polarization direction. . In claim 1,
A second display panel that alternately modulates the polarization of the second incident light based on the second left-eye image information and the second right-eye image information;
A second polarizing element that is irradiated with modulated light emitted from the second display panel and transmits a component in the first polarization direction;
A second polarization control panel that emits second outgoing light that is irradiated with the second transmitted light that has passed through the second polarizing element and that controls the polarization direction of the transmitted light in units of pixels;
A projector comprising: a light combining device that emits combined light obtained by combining the first output light and the second output light. In claim 3,
The second display panel is
When the first display panel is modulated based on the first left eye image information, the polarization of the second incident light is modulated based on the second left eye image information. When the display panel is modulated based on the first right-eye image information, the polarization direction of the second incident light is modulated based on the second right-eye image information,
The second polarization control panel includes:
The pixel modulated based on the second image information for the left eye in the second display panel is set to one of the first polarization direction and the second polarization direction orthogonal to the first polarization direction. Control
A projector that controls a pixel modulated based on the second right-eye image information in the second display panel to the other polarization direction of the first polarization direction and the second polarization direction. . A first display panel that alternately modulates the polarization of the first incident light based on the first left-eye image information and the first right-eye image information;
A first polarizing element that is irradiated with the first modulated light emitted from the first display panel and transmits a component in the first polarization direction;
A second display panel that alternately modulates the polarization of the second incident light based on the second left-eye image information and the second right-eye image information;
Second modulated light emitted from the second display panel is irradiated to transmit a component of the first polarization direction or a component of the second polarization direction orthogonal to the first polarization direction. A polarizing element;
A light combining device that combines the first transmitted light transmitted through the first polarizing element and the second transmitted light transmitted through the second polarizing element;
A projector comprising: a polarization control panel that emits outgoing light in which the polarization direction of the combined light combined by the light combining device is controlled in units of a predetermined pixel area. In claim 5,
The second polarizing element is
Transmitting the component of the first polarization direction;
The second display panel is
When the first display panel is modulated based on the first left-eye image information, the polarization of the second incident light is modulated based on the second left-eye image information, When the display panel is modulated based on the first right-eye image information, the polarization direction of the second incident light is modulated based on the second right-eye image information,
The polarization control panel is:
The polarization direction of the combined light is controlled in units of pixels in the first polarization direction or the second polarization direction in synchronization with driving of the first display panel and the second display panel. Projector. In claim 5,
The second polarizing element is
Transmitting the component of the second polarization direction;
The second display panel is
When the first display panel is modulated based on the first left-eye image information, the polarization of the second incident light is modulated based on the second right-eye image information. When the display panel is modulated based on the first right-eye image information, the polarization direction of the second incident light is modulated based on the second left-eye image information,
The polarization control panel is:
A projector that controls the polarization direction of the combined light in units of pixels in synchronization with driving of the first display panel and the second display panel. In any of claims 3 to 7,
A projector comprising a λ / 4 plate disposed on the light exit side of the photosynthesis device. A projector according to any one of claims 1 to 7,
A projector system comprising polarized glasses having different polarization directions for the left eye and the right eye. A projector according to claim 8;
A projector system comprising: circularly polarized glasses having different directions of circularly polarized light for the right eye and the left eye. In claim 9 or 10,
A projector system comprising a polarization preserving screen.

Images