JPH05224232A - Display device - Google Patents

Abstract

PURPOSE:To provide the display device which generates a state wherein plural pieces of image information are excellently superposed. CONSTITUTION:Information to be displayed is decomposed into plural pieces of light information which are different in one or both of wavelength range and polarization plane and supplied to an optical system including a common light polarizer and a common image forming lens LW so that main light beams of the plural pieces of light information are aligned with one another, and the light information projected from the optical system is decomposed again into the original plural pieces of light information, which are imaged on individual optical write type spatial optical modulating elements SLMr, SLMg, and SLMb and written in the individual optical write type optical modulating elements. Read light emitted by a read light source LS is decomposed into plural read light beams having specific wavelength ranges, and the light information is read out of the respective optical write type spatial optical modulating elements with the read light beams and made incident on the common projection lens 4 while the main light beams of the individually read pieces of the light information are aligned with one another to display the image on a screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device.

[0002]

2. Description of the Related Art FIGS. 8 and 9 are perspective views showing a configuration example of a display device previously proposed as a display device capable of displaying a high-resolution color image. In FIGS. 8 and 9, REA, REAr, REAg, and REAb are each a large number of light emitting elements (for example, a large number of light emitting diodes).
Is a light emitting element array configured by arranging in a linear manner, and CSA is a three-color separation (or three-color combination) optical system (Pr and Pb are prisms, DP is a dichroic prism, and Mr and Mb are reflection surfaces. ), L, Lr, Lg, Lb are imaging lenses, DMr, DMg, DMb, Mb are optical deflecting elements, and SLMr, SLMg, SLMb are optical writing type spatial light modulating elements (light-light converting elements ... Spatial light modulator), PBS is a polarization beam splitter, LS
Is a light source for reading light, Lp is a projection lens, and S is a screen.

In the display device illustrated in FIG. 8, the light emitted from each of the three light emitting element arrays REar, REAg, and REAb arranged in parallel in the space is individually provided. Imaging lens (Lr, Lg, Lb) and optical deflector (DMr, DMg, D)
Mb) and an image is formed on each of the spatial light modulators (SLMr, SLMg, SLMb) provided corresponding to each other, and in the display device illustrated in FIG. 3 in series in the light emitting element array REA
Light individually radiated from each of the divided regions r, g, and b is individually provided in a corresponding space via one imaging lens L and one light deflection element Mg. An image is formed on the light modulation elements (SLMr, SLMg, SLMb). The read light emitted from the read light source LS is
The three spatial light modulators (SLMr, SLMg, SLMb) are supplied to the three spatial light modulators (SLMr, SLMg, SLMb) through the polarization beam splitter PBS and the three-color separation (or three-color combining) optical system. When individual optical information is read from SLMr, SLMg, SLMb), the three spatial light modulators (SLMr, SLMg, SLM) described above are read.
The optical information read from b) is combined by a three-color separation (or three-color combination) optical system CSA, and then is incident on the projection lens Lp via the polarization beam splitter PBS.
A color image is displayed on the screen S by the projection lens Lp.

Each light emitting element array REA, REA described above
r, REAg, and REAb are, for example, N light emitting elements linearly arranged in each light emitting element array,
N on a straight line in the image to be displayed
The amount of light emission according to the information of each pixel can simultaneously emit light over a predetermined period. When the image information to be displayed is supplied to the display device from the image information signal source as a time-series image signal, for example, the time-series image signal output from the image information signal source is displayed. The N pixel information in the image signal is converted into a simultaneous signal by the serial / parallel conversion circuit and then supplied to the light emitting element array. As the serial / parallel conversion circuit, for example, a shift register is used. The N luminous fluxes emitted from the N light emitting elements in the light emitting element array in the state of being intensity-modulated by the N pixel information respectively,
As described above, the light enters the optical deflecting element (DMr, DMg, DMb, Mb) through the imaging lens (L, Lr, Lg, Lb), and the optical deflecting element (DMr, DMg, DMb, Mb) described above. The above-mentioned luminous flux is converted into the above-mentioned three spatial light modulators (SL
(Mr, SLMg, SLMb), the respective spatial light modulators (SLMr, S
The vertical scanning operation of the LMg, SLMb) in a predetermined moving manner is repeated in the vertical direction, and the three spatial light modulators (SLMr, SLMg, SLMb) described above perform the writing operation by the incident light beam.

The above-mentioned spatial light modulator SLM (in the case of showing a plurality of spatial light modulators SLM in the figure, reference numeral SL
Although the subscripts are added to M to distinguish them, in the case of describing each spatial light modulator without distinguishing it, the spatial light modulator S
(Described as LM) is, for example, as illustrated in FIG. 10, a transparent substrate BP1, a transparent electrode Et1, a photoconductive layer member PCL, a dielectric mirror DML, and a light modulation material layer member PM.
L, a transparent electrode Et2, and a transparent substrate BP2 are laminated. The transparent electrodes Et1 and Et2 are composed of a thin film of a transparent conductive material, the photoconductive layer member PCL is composed of a material exhibiting photoconductivity in the wavelength range of light used, and a dielectric mirror. As the DML, a well-known one configured as a multilayer film so as to be able to reflect light of a predetermined wavelength band can be used, and further, the light modulation material layer member PML.
Is a light modulator (for example, nematic liquid crystal, lithium niobate, which changes the light state (light polarization state, light rotation state, light scattering state) according to the applied electric field strength.
BSO, PLZT, polymer-liquid crystal composite film, etc.).

In FIG. 10, E is a power source for applying a predetermined voltage between the transparent electrodes Et1 and Et2. The power source E is shown as an AC power source in the figure, but the light modulating section 3 is used. Depending on the constituent material of the light modulation material layer member PML, the power source may be a DC power source or an AC power source. WL in the figure is a substrate BP in the spatial light modulator SLM.
The writing light which is incident from the 1 side and is condensed on the photoconductive layer member PCL is intensity-modulated by the information to be displayed. From the transparent substrate Et1 side in the spatial light modulator SLM in which a predetermined voltage is supplied from the power source E between the transparent electrodes Et1 and Et2, the N writing lights WL whose intensity is modulated by the information to be displayed. Is incident on the transparent substrate BP
When the light is focused on the photoconductive layer member PCL through 1 and the transparent electrode Et1, the electric resistance value of the photoconductive layer member PCL at the portion where the N writing lights WL are focused is changed to the irradiated light amount. The N writing lights WL which are changed in intensity and are linearly arranged at the boundary between the photoconductive layer member PCL and the dielectric mirror DML according to the information to be displayed. N charge images corresponding to the respective irradiation light amounts are formed. In the N charge images described above, the charges having the charge amounts corresponding to the sequential pixel signals in the time series signal are arranged. It is in the state of being.

Therefore, an electric field due to N charge images formed at the boundary between the photoconductive layer member PCL and the dielectric mirror DML is applied to the light modulator material layer member PML in the spatial light modulator SLM. .. In the above-mentioned state, when the read light RL is incident from the transparent substrate BP2 side of the spatial light modulator SLM, the read light RL changes from the transparent substrate BP2 → the electrode Et2 → the light modulation material layer member PML → the dielectric mirror DML. The light reaches the dielectric mirror DML by the path and is reflected there, and the reflected light of the read light is the dielectric mirror DM.
L → light modulation material layer member PML → electrode Et2 → transparent substrate BP2
The light is emitted from the spatial light modulator SLM on the path of →. The N light fluxes emitted from the spatial light modulator SLM as described above are electric fields of N charge images in a state in which charges of a charge amount corresponding to the sequential pixel signals in the time series signal are arranged. Is a light flux that has traveled back and forth through the applied light modulation material layer member PML, so that the N light fluxes have a light state that changes corresponding to the sequential pixel signals in the time series signal. ..

The constituent material of the light modulating material layer member PML in the spatial light modulating element SLM is such that (1) the scattering state of light passing therethrough is changed according to the electric field strength applied thereto. In this case, the reflected light fluxes of the N read light beams emitted from the spatial light modulator SLM as described above have their light intensities changed corresponding to the N sequential pixel information in the time-series signal. It is in a state of being
Further, the light modulation material layer member P in the spatial light modulation element SLM.
If the constituent material of the ML is such that (2) it changes the polarization state or the birefringence state of the light passing through it according to the electric field strength applied to it, Then, the reflected light fluxes of the N read light beams emitted from the spatial light modulator SLM have their polarization states or polarization plane states changed corresponding to the N sequential pixel information in the time-series signal. It is in a state. I mentioned above
In the case of (2), the light flux emitted from the spatial light modulation element SLM is passed through the analyzer (the same applies to the polarization beam splitter PBS), whereby the reflected light flux of the N read light emitted from the spatial light modulation element SLM. To N in the time series signal
The light intensity may be changed corresponding to the individual pieces of pixel information.

[0009]

By the way, among the conventional display devices described above with reference to FIGS. 8 and 9, the display devices described with reference to FIG. 8 are arranged in parallel in a space. Light emitting element arrays REAr, REAg, REAb
The light radiated from each of the above is provided correspondingly via the imaging lens (Lr, Lg, Lb) and the light deflection element (DMr, DMg, DMb) which are individually provided respectively. Individual spatial light modulator (SLMr, S
LMg, SLMb) is imaged, and optical information is written in each of the individual spatial light modulators (SLMr, SLMg, SLMb) described above, so that images having high resolution are superposed well. It was extremely difficult to display it in the state. That is, since there are manufacturing tolerances of the optical lens, an error in mounting the lens on the lens barrel, an eccentricity of the optical axis (optical axis), an error in the optical deflector, and the like, for example, in the conventional display device illustrated in FIG. In addition, the light emitted individually from each of the three light emitting element arrays REAr, REAg, and REAb is individually provided with the imaging lens (Lr, Lg, Lb) and the light deflection element (DMr, D).
Mg, DMb) and individual spatial light modulators (SLMr, SLMg, SL) provided corresponding to each other.
Mb), the optical paths individually formed between the respective light emitting element arrays REAr, REAg, REAb and the individual spatial light modulators (SLMr, SLMg, SLMb) are formed. Since image distortions caused by the optical members provided therein are not related to each other, it is extremely difficult to display a plurality of images having high resolution in a well-superimposed state. ..

The conventional display device described with reference to FIG. 9 has three light emitting element arrays REA connected in series.
Lights individually radiated in parallel from the divided regions r, g, and b are individually provided corresponding to each other via a common imaging lens L and a common light deflection element Mg. An image is formed on the light modulators (SLMr, SLMg, SLMb), but the regions r, g, and b divided into three in series in one light emitting device array REA described above are individually radiated in parallel. The generated light is incident on the optical axis of the imaging lens L in different states, so that the three light-emitting element arrays REA are serially connected to each other.
Since the images based on the light information emitted from the divided regions r, g, and b have individual image distortions, it is difficult to properly superimpose them, and the MTF of the display image is lowered. The problem is that color shift occurs. As described above, in the conventional display device, it is extremely difficult to precisely superimpose and display a plurality of optical information in a predetermined state. This is an obstacle in displaying, for example, color image information or stereoscopic image information in a high resolution state in which display is performed using a plurality of optical information, and a solution to that is required.

[0011]

SUMMARY OF THE INVENTION The present invention is a means for decomposing information to be displayed into a plurality of pieces of light information having different wavelength ranges, and a plurality of the above-mentioned plurality of lights having different wavelength ranges. Means for matching principal rays of information and deflecting them by a common light deflecting means, means for making the light deflected by the above-mentioned light deflecting means enter a common imaging lens, and exiting from the above-mentioned common imaging lens. Means for reassembling the optical information into a plurality of optical information having different original wavelength ranges, and individual optical information in the plurality of optical information having different wavelength ranges, respectively, at least photoconductive Forming an image on the photoconductive layer member of each individual optical writing type spatial light modulating element in a plurality of optical writing type spatial light modulating elements configured to include a layer member and a light modulating material layer member, A plurality of optical writing described above Means for individually writing individual optical information in a plurality of optical information having different wavelength ranges described above to the spatial light modulator of the type, and the light emitted from the light source of the reading light occupies a predetermined wavelength range, respectively. A means for decomposing into a plurality of reading light, a means for giving each reading light in the plurality of reading light to a predetermined one of the plurality of optical writing type spatial light modulators as a reading light. Means for making the principal rays of each piece of optical information individually read from a plurality of optical writing type spatial light modulators incident on a common projection lens, and the optical information emitted from the common imaging lens described above. And a means for decomposing the information to be displayed into a plurality of optical information having different polarization planes, and the above-mentioned different polarization planes. Means for matching principal rays of a plurality of optical information and deflecting them by a common light deflecting means, means for making the light deflected by the above-mentioned light deflecting means incident on a common imaging lens, and the above-mentioned common imaging Means for decomposing the optical information emitted from the lens into a plurality of optical information having different original polarization planes, and individual optical information in the plurality of optical information having different polarization planes, respectively, Forming an image on the photoconductive layer member of each individual optical writing type spatial light modulation element in a plurality of optical writing type spatial light modulation elements configured to include at least a photoconductive layer member and a light modulation material layer member Then, means for individually writing individual optical information in the plurality of optical information having different polarization planes to the plurality of optical writing type spatial light modulators, and a light source for reading light emitted from the light source. Each given light Means for decomposing into a plurality of reading lights occupying a wavelength range, and means for giving each reading light in the plurality of reading lights to a predetermined one in the plurality of optical writing type spatial light modulators as reading light. And means for causing the principal rays of the respective optical information individually read out from the plurality of optical writing type spatial light modulators to coincide with each other and to be incident on a common projection lens, and from the common imaging lens described above. A display device comprising means for projecting the emitted light information on a screen, and information to be displayed as a plurality of light information having different wavelength ranges and a plurality of light information having different polarization planes. The disassembling means and the chief rays of a plurality of optical information having different wavelength ranges described above and the chief rays of a plurality of optical information having different polarization planes are matched and deflected by a common light deflecting means. A step, a means for causing the light deflected by the light deflecting means to be incident on a common imaging lens, and a plurality of light information emitted from the common imaging lens having different original wavelength ranges. Of light information and a plurality of light information having different polarization planes, and individual light in the plurality of light information having different wavelength ranges and the plurality of light information having different polarization planes Photoconductive information of each individual optical writing type spatial light modulating element in a plurality of optical writing type spatial light modulating elements each including at least a photoconductive layer member and a light modulating material layer member. An image is formed on the layer member, and the plurality of optical information of the optical writing type spatial light modulators described above are separated from each other in the plurality of optical information having different wavelength ranges and the plurality of optical information having different polarization planes. A means for individually writing and reading optical information Means for decomposing light emitted from the light source into a plurality of read lights each occupying a predetermined wavelength range, and individual read light in the plurality of read lights described above, the plurality of optical writing type spatial light A means for giving a read light to a predetermined one of the modulators and a chief ray of each optical information individually read from the plurality of optical writing type spatial light modulators are made coincident and are incident on a common projection lens. There is provided a display device including a means for causing the light information emitted from the common imaging lens to be projected on a screen.

[0012]

The information to be displayed is decomposed into a plurality of optical information having different wavelength ranges and / or polarization planes. The principal rays of the plurality of pieces of optical information having different wavelength ranges and / or polarization planes are made to coincide with each other and deflected by a common optical polarizer, and then incident on a common imaging lens. After decomposing the optical information emitted from the common imaging lens into the original plurality of optical information again,
Individual optical information in a plurality of optical information having different one or both of the wavelength range and the polarization plane is configured to include at least a photoconductive layer member and a light modulation material layer member, respectively. An image is formed on the photoconductive layer member of each individual optical writing type spatial light modulating element in the plurality of optical writing type spatial light modulating elements, and the individual optical information is written to each individual optical writing type spatial light. Write to the modulator. The light emitted from the light source of the reading light is decomposed into a plurality of reading lights each occupying a predetermined wavelength range, and the reading light occupying the individual wavelength ranges of the plurality of reading lights is written into the plurality of optical writings. The optical information is read from each of the optical writing type spatial light modulators by using as a read light of a predetermined one in the type spatial light modulator. The respective optical information read out individually from the plurality of spatial light modulators of the optical writing type are caused to coincide with the principal rays and are incident on a common projection lens to display an image on the screen. In this way, a good display image can be obtained regardless of whether the plurality of optical information items are color image information items or stereoscopic image information items.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the display device of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 4 are block diagrams showing schematic configurations of different embodiments of the display device of the present invention, and FIGS. 5 to 7 are characteristic example diagrams for explanation. FIG. 1 showing each embodiment of the display device of the present invention.
To FIG. 4, REAα, REAβ, REAγ, RE
A.delta., REA.epsilon.p, REA.epsilon.s and the like are light emitting element arrays each of which is formed by linearly arranging a large number of light emitting elements (for example, a large number of light emitting diodes).
DM1-2, DM2-1, DM2-2, DM3, DM4, DM5-1,
DM5-2 etc. are dichroic mirrors, CSA1, CSA
2, CSA3 etc. are three color separation (or three color combination) optical system (Pr, Pb, Pα, Pβ are prisms, DP is dichroic prism, Mr, Mb, Mα, Mβ are reflecting surfaces),
Mb is a light deflection element (oscillating reflector), SLMr, SLMg,
SLMb etc. are optical writing type spatial light modulators, PBS, P
BS1, PBS2, etc. are polarization beam splitters, M1, M2 are total reflection mirrors, LS is a light source for reading light, Lp is a projection lens,
S is a screen, and the above-mentioned optical writing type spatial light modulators SLMr, SLMg, SLMb may have a configuration as described with reference to FIG.

In the display device of the present invention shown in FIGS. 1 to 4, a plurality of lights whose information to be displayed has different wavelength ranges and / or polarization planes. The information is decomposed into information, and the principal rays of the plurality of pieces of optical information having different wavelength ranges and / or polarization planes are matched and deflected by a common optical deflecting element Mg. After the optical information that has been made incident on the imaging lens Lw and has exited from the common imaging lens Lw is decomposed into a plurality of original optical information again, either or both of the wavelength range and the polarization plane described above can be obtained. A plurality of optical writing type spatial light modulators SLMr, SLMg each including at least a photoconductive layer member and a light modulation material layer member for individual light information in a plurality of different light information. , Individual optical writing in SLMb The individual light information is written in the individual light writing type spatial light modulators SLMr, SLMg, SLMb by forming an image on the photoconductive layer member of the spatial light modulator, and emitted from the light source LS of the read light. The divided light is decomposed into a plurality of read lights each occupying a predetermined wavelength range, and the read lights occupying the individual wavelength ranges of the plurality of read lights are converted into the plurality of optical writing type spatial light modulators. The optical information is read from each of the optical writing type spatial light modulators SLMr, SLMg, SLMb by using as a reading light of a predetermined one in SLMr, SLMg, SLMb, and the plurality of optical writing type spatial light modulators SLMr described above are read. , S
The respective pieces of light information read out individually from LMg and SLMb are such that the respective principal rays are matched and made incident on a common projection lens Lp to display an image on the screen S.

First, the display device of the present invention shown in FIG. 1 will be described. In the display device shown in FIG. 1, three light emitting element arrays REAα, REAβ, REAγ that can emit light in different wavelength ranges are used.
FIG. 5A shows each of the light emitting element arrays REAα, R described above.
Wavelength range α, β, γ of light emitted from EAβ, REAγ
In the following description, the light emitting element array REAα emits light in the wavelength range α in FIG. 5A, and the light emitting element array REAβ in FIG. 5A is illustrated in FIG. The light emitting element array REAγ emits light in the wavelength range γ in FIG. 5A. The three light emitting element arrays REAα, REAβ, and REAγ are driven so as to emit light whose intensity is modulated by the image signal to be displayed. In the following description, the light emitting element array REAα emits light in the wavelength range α which is intensity-modulated by the image signal of the red primary color in the three primary color signals of additive color mixture, and the light emitting element array REAα
At β, the light in the wavelength range β that is intensity-modulated by the image signal of the blue primary color in the three primary color signals of the additive color mixture is emitted,
Further, the light emitting element array REAγ is supposed to radiate light in the wavelength range γ whose intensity is modulated by the image signal of the green primary color in the three primary color signals of additive color mixture.

The N light fluxes emitted from the light emitting element array REAα in which N light emitting elements are linearly arranged are:
The light in the wavelength range α, which is intensity-modulated by the red image signal in the N pixels of the image to be displayed, respectively, and the N light fluxes in the wavelength range α emitted from the light emitting element array REAα are , A dichroic mirror DM1-1 having a transmittance characteristic as exemplified by the curve DM1 in FIG. 5B, and a transmittance characteristic as exemplified by the curve DM2 in FIG. 5B. After passing through both the dichroic mirror DM2-1, the light is incident on a light deflecting element (oscillating mirror ... Galvano mirror) Mg, and is emitted from a light emitting element array REAγ in which N light emitting elements are linearly arranged. The N light fluxes are lights in the wavelength range γ that are intensity-modulated by the green image signals in the N pixels of the image to be displayed, and are emitted from the light emitting element array REAγ. N light bundle of the present wavelength range γ is,
After being reflected by the dichroic mirror DM1-1 having the transmittance characteristic illustrated in the curve DM1 of FIG. 5B, the transmittance characteristic illustrated in the curve DM2 of FIG. 5B. Dichroic mirror D
After passing through M2-1, it is incident on the light deflecting element Mg, and N
The N light fluxes emitted from the light emitting element array REAβ in which the light emitting elements are linearly arranged are intensity-modulated by blue image signals in N pixels of the image to be displayed. Light in the wavelength range β
The N light fluxes in the wavelength range β emitted from the light emitting element array REAβ have a dichroic mirror DM2- having a transmittance characteristic as illustrated by the curve DM2 in FIG. 5B.
The light is reflected at 1 and enters the light deflection element Mg.

As described above, each light emitting element array REA
Each wavelength range α, β emitted from α, REAβ, REAγ
Each of the N light fluxes of γ enters a common single light deflection element Mg in a state where the principal rays of the corresponding light flux match, and is optically deflected by the light deflection element Mg to form the imaging lens Lw. Incident on. The N light fluxes of each wavelength range α, β, γ emitted from the imaging lens Lw are shown in FIG.
It is incident on the dichroic mirror DM1-2 having the transmittance characteristic as exemplified by the curve DM1 in (b).
Since the dichroic mirror DM1-2 transmits only the light flux in the wavelength range α and reflects the light fluxes in the wavelength ranges β and γ, the light flux in the wavelength range α emitted from the imaging lens Lw is reflected by the total reflection mirror M1. The wavelength regions β and γ reflected by the dichroic mirror DM1-2 are imaged on the photoconductive layer member of the spatial light modulator SLMr.
Of the light fluxes in the wavelength range γ among the light fluxes of
The spatial light modulator SL is transmitted through the dichroic mirror DM2-2 having the transmittance characteristic as exemplified by M2.
An image is formed on the photoconductive layer member in Mg, and the light flux in the wavelength range β described above is reflected by the dichroic mirror DM2-2 having the transmittance characteristic as illustrated by the curve DM2 in FIG. 5B. An image is formed on the photoconductive layer member in the spatial light modulator SLMb.

That is, the above-mentioned light emitting element array REA
The light in the wavelength range α emitted from α is dichroic mirror DM1-1 → dichroic mirror DM2-1 → light deflector Mg → imaging lens Lw → dichroic mirror DM1-2.
→ Total reflection mirror M1 → Imaged on the photoconductive layer member of the spatial light modulator SLMr by the optical path of the spatial light modulator SLMr,
In addition, the wavelength range β emitted from the light emitting element array REAβ
Light is dichroic mirror DM2-1 → light deflection element M
g → imaging lens Lw → dichroic mirror DM1-2 →
Dichroic mirror DM2-2 → Spatial light modulator SLM
The light in the wavelength range γ emitted from the light emitting element array REAγ, which is imaged on the photoconductive layer member of the spatial light modulator SLMb by the optical path of b, is dichroic mirror DM1-1.
→ dichroic mirror DM2-1 → light deflection element Mg → imaging lens Lw → dichroic mirror DM1-2 → dichroic mirror DM2-2 → image formation on the photoconductive layer member of the spatial light modulation element SLMg by the optical path of the spatial light modulation element SLMg. To be done.

Each light emitting element array REAα, RE
The light fluxes in the respective wavelength ranges α, β, γ emitted from Aβ, REAγ are imaged in common with one common light deflection element Mg which is incident in a state where the principal rays of the corresponding light fluxes coincide with each other. A spatial light modulator SLM that is configured to include a lens Lw and is provided corresponding to each other through different optical paths that have the same optical path length.
Since the images are formed on the r, SLMb, and SLMg, the light emitting element arrays REAα, REAβ, RE
Spatial light modulator S provided corresponding to each of the light fluxes of wavelengths α, β, γ emitted from Aγ
The optical images formed on LMr, SLMb, and SLMg are the same for optical images of light in each wavelength range, even if some distortion occurs due to the light deflection element Mg and the imaging lens Lw. Therefore, the optical information of the respective wavelength ranges α, β, γ emitted from the imaging lens Lw as the optical information corresponding to the image information in the extremely excellent superposition state is converted into the respective wavelength ranges α, β, γ. Spatial light modulators SLMr, SLMb, SLMg which are optically decomposed for each and individually provided corresponding to the optical information of the respective wavelength ranges α, β, γ.
The image formed by each of the optical information on the image is an image for each primary color for which a good state of superimposition can be obtained. Therefore, according to the present invention, there is a problem with the conventional display device described above. The points are settled well. This point also applies to the embodiments of the display device of the present invention illustrated in FIGS. 2 to 4.

Each of the above spatial light modulators SLMr, SL
The image based on the respective optical information formed on Mb and SLMg is recorded by the spatial light modulator SLMr, S by the writing operation of the spatial light modulator as described above with reference to FIG.
It is written in LMb and SLMg. In FIG. 1, LS is a light source for reading light, and as the light source LS for reading light, a light source that can emit light in a wide wavelength range is used.
The polarization beam splitter PBS on which the read light emitted from the light source LS of the read light is incident reflects the read light of each S-polarized light and makes it enter the dichroic mirror DM3.
The dichroic mirror DM3 described above has a transmission characteristic that allows only light in the wavelength range of green light to pass therethrough, as exemplified by the curve DM3 in FIG. The green light component of the light passes through the dichroic mirror DM3 and enters the total reflection mirror M2. The green light component that has entered the total reflection mirror M2 is reflected by the total reflection mirror M2 and enters the spatial light modulator SLMg as writing light.

Further, the above-mentioned dichroic mirror DM
The red light component and the blue light component in the read light reflected by 3 enter the dichroic mirror DM4. Since the dichroic mirror DM4 described above has a transmission characteristic that allows only light in the wavelength range of red light to pass therethrough, as illustrated by the curve DM4 in FIG. The red light component of the light passes through the dichroic mirror DM4 and enters the spatial light modulator SLMr as writing light. Further, of the red light component and the blue light component in the read light that has entered the dichroic mirror DM4, the blue light component is reflected by the dichroic mirror DM4 and enters the spatial light modulator SLMb as write light.

Each of the above spatial light modulators SLMr, SL
The Mb and SLMg perform the read operation as described above with reference to FIG. 10, and the optical information including the image information of the red primary color read from the spatial light modulation element SLMr becomes the spatial light modulation element SLMr → dichroic. Mirror DM4 → dichroic mirror DM3 → polarization beam splitter PBS → projection lens Lp → image is formed on the screen by an optical path of a screen (not shown), and spatial light modulator SL
The optical information including the image information of the green primary color read from the Mg screen is displayed by the spatial light modulator SLMg → total reflection mirror M2 → dichroic mirror DM3 → polarization beam splitter PBS → projection lens Lp → the optical path of a screen not shown. An image is formed on the spatial light modulator S
The light information including the image information of the primary blue color read from LMb is the spatial light modulator SLMb → dichroic mirror D.
An image is formed on the screen by M4 → dichroic mirror DM3 → polarization beam splitter PBS → projection lens Lp → the optical path of a screen (not shown). And
Each of the above spatial light modulators SLMr, SLMb, SLM
Since g is installed at the same distance from the main plane of the common projection lens Lp, each spatial light modulator SLM described above is provided.
The image information of each primary color light read from r, SLMb, and SLMg is displayed as an image in a state where it is well overlapped on the same screen by the common projection lens Lp.

In the embodiment of the display device of the present invention described above with reference to FIG. 1, the principal rays of a plurality of optical information having different wavelength ranges are made to coincide with each other and deflected by the common optical deflecting means. Then, the deflected light information is made incident on a common imaging lens, and the light information emitted from the imaging lens is decomposed for each original light information having a different wavelength range by a color separation optical system. Then, the optical information for each wavelength range described above is written in the individual spatial light modulators SLMr, SLMb, SLMg, and the individual spatial light modulators SLMr, SLMb, SLMg are written.
The optical information read individually from the above is configured to be projected as one image on the screen by a common projection lens. However, the embodiment of the display device of the present invention shown in FIG. 2 and FIG. , The principal rays of the plural pieces of optical information having different wavelength ranges and the plural pieces of optical information having different planes of polarization are matched and deflected by a common optical deflecting means, and the deflected optical information is shared. The optical information that is made incident on the image forming lens and is emitted from the image forming lens has different wavelength ranges by a predetermined optical system. Optical information for each wavelength range and the optical information for each polarization plane are written in the individual spatial light modulators SLMr, SLMb, SLMg, and the individual spatial light modulators SLMr, SLMb are separated. , Read individually from SLMg Information is what was configured to output movies as one image on a screen by a common projection lens.

2 and 3, REAδ, REAε
p and REAεs are three light emitting element arrays, and FIG. 7A shows each of the above light emitting element arrays REAδ and REAε.
It is a figure which illustrates the wavelength range (delta) and (epsilon) of the light radiated from p, REA (epsilon) s. In the following description, as the light emitting element array REAδ, one that emits light in the wavelength range δ indicated by δ in FIG. 7A is used, and the light emitting element array REAεp and the light emitting element array REAεs are used. Is shown in FIG.
It is assumed that the one that emits light in the same wavelength range ε indicated by the wavelength range ε in (a) is used. That is, in the display device illustrated in FIG. 2 and FIG. 3, the same three light emitting element arrays are used as the three light emitting element arrays used to generate the light fluxes of which the intensity is modulated by the three different pieces of information. A total of three light emitting elements: two light emitting element arrays REAεp, REAεs capable of emitting light in the wavelength range ε and one light emitting element array REAδ emitting light in the wavelength range δ different from the wavelength range ε described above. Using the array, the light in the wavelength range ε emitted from the light emitting element array REAεp is transmitted through the polarizer PLp so that only P polarized light is used, and the light in the wavelength range ε emitted from the light emitting element array REAεs is used. The light passes through the polarizers PLs and S
Since only polarized light is used, it is possible to generate a light beam whose intensity is modulated by light of two wavelength ranges δ and ε, and ultimately three different pieces of information. is there.

The above-mentioned three light emitting element arrays REAδ,
REAεs and REAεp are driven so as to emit light whose intensity is modulated by the image signal to be displayed. In the following description, in the light emitting element array REAδ, the wavelength range δ in which the intensity is modulated by the image signal of the red primary color in the three primary color signals of the additive color mixture
In addition, the light emitting element array REAεs emits a wavelength range ε that is intensity-modulated by the image signal of the blue primary color in the three primary color signals of the additive color mixture, and only S polarized light is emitted by the polarizer PLs. In addition, the light emitting element array REAεp emits a wavelength range ε which is intensity-modulated by the image signal of the green primary color in the three primary color signals of the additive color mixture, and the wavelength region ε is emitted by the polarizer PLp.
Only the polarized light is output.

The N light fluxes emitted from the light emitting element array REAδ in which N light emitting elements are linearly arranged are:
Each of the N light fluxes in the wavelength range δ emitted from the light emitting element array REAδ is light that is intensity-modulated by the red image signal in the N pixels of the image to be displayed. After passing through a dichroic mirror DM5-1 having a transmittance characteristic as illustrated by a curve DM5 in FIG. 7B, an optical deflection element (oscillating mirror ...
Galvano mirror) Mg, and the N light fluxes emitted from the light emitting element array REAεp in which N light emitting elements are linearly arranged and emitted from the polarizer PLp are
These are the P-polarized light εp in the wavelength region ε that is intensity-modulated by the green image signal in the N pixels of the image to be displayed.
The N light fluxes in the wavelength range εp emitted from the polarizer PLp and having a wavelength region εp have transmittance characteristics as illustrated by the curve DM5 in FIG. 7B after passing through the polarization beam splitter PBS1. Dichroic mirror DM5-1
And is incident on the light deflection element Mg.
N emitted from the light emitting element array REA εs in which a number of light emitting elements are linearly arranged and emitted from the polarizer PLs.
The light flux of the book is N of the image to be displayed.
S-polarized light in the wavelength range ε that is intensity-modulated by the blue image signal in each pixel,
The N light fluxes of S-polarized light having a wavelength range ε emitted from Aεs are reflected by the polarization beam splitter PBS1 and then have a dichroic characteristic having a transmittance characteristic as illustrated by a curve DM5 in FIG. 7B. The light is reflected by the mirror DM5-1 and enters the light deflection element Mg.

As described above, each light emitting element array REA
light in the wavelength range δ emitted from δ, REAεs, REAεp,
And P polarizations εp in the wavelength range ε and S polarizations in the wavelength range ε, each of the N light fluxes is a common light deflection element Mg in a state where the principal rays of the corresponding light fluxes match. Is incident on the imaging lens Lw. Then, the imaging lens L
The light beams of the wavelength range δ emitted from w, the P-polarized light beams εp of the wavelength range ε, and the N luminous fluxes of the S-polarized light beams of the wavelength range ε are illustrated by the curve DM5 in FIG. 7B. DM5-2 with transmissivity characteristics
Incident on. The dichroic mirror DM5-2 is
Since only the light flux in the wavelength range δ is transmitted and the light flux in the wavelength range ε is reflected, the light flux in the wavelength range δ emitted from the imaging lens Lw is reflected by the total reflection mirror M1 and the spatial light modulator S
Of the luminous flux in the wavelength range ε which is imaged on the photoconductive layer member in LMr and which is reflected by the above-mentioned dichroic mirror DM5-2, the P-polarized light in the wavelength range ε passes through the polarization beam splitter PBS2 and becomes the spatial light. An image is formed on the photoconductive layer member in the modulation element SLMg, and the S-polarized light in the wavelength range ε described above is reflected by the polarization beam splitter PBS2 and is formed on the photoconductive layer member in the spatial light modulation element SLMb.

That is, the above-mentioned light emitting element array REA
The light in the wavelength range δ emitted from δ is spatially modulated by the optical path of the dichroic mirror DM5-1 → the light deflection element Mg → the imaging lens Lw → the dichroic mirror DM5-2 → the total reflection mirror M1 → the spatial light modulation element SLMr. An image is formed on the photoconductive layer member of the element SLMr, and the light emitting element array REAεs
The S-polarized light in the wavelength range ε emitted from the polarizer PLs and emitted from the polarizer PLs is polarized beam splitter PBS1 → dichroic mirror DM5-1 → light deflector Mg → imaging lens L
w → dichroic mirror DM5-2 → polarization beam splitter PBS2 → imaged on the photoconductive layer member of the spatial light modulation element SLMb by the optical path of the spatial light modulation element SLMb, and further emitted from the light emitting element array REAεp to be polarized by the polarizer P.
The P-polarized light in the wavelength range ε emitted from Lp is polarized beam splitter PBS1 → dichroic mirror DM5-1 → light deflector Mg → imaging lens Lw → dichroic mirror DM5-2 → polarized beam splitter PBS2 → spatial light modulator. An image is formed on the photoconductive layer member of the spatial light modulator SLMg by the optical path of SLMg.

Each light emitting element array REAδ, RE
The light rays in the wavelength range δ radiated from Aεs and REAεp, the P-polarized light rays εp in the wavelength range ε, and the N light fluxes in each of the S-polarized light wavelengths in the wavelength range ε are the principal rays of the corresponding light fluxes. It is configured to include one common light deflecting element Mg and a common imaging lens Lw which are incident in a matched state, and through each different optical path having the same optical path length. , The respective spatial light modulators SLMr, SLMb, and SLMg are provided so as to form images.
light in the wavelength range δ emitted from δ, REAεs, REAεp,
And the spatial light modulators SLMr, SLMb, S respectively provided by P light beams of P polarization in the wavelength region ε and N light beams of S polarization in the wavelength region ε.
Even if some distortion occurs in the optical image formed on the LMg by the light deflection element Mg and the imaging lens Lw, the distortion is the same for the optical image of light in each wavelength range, and therefore, Each of the light in the wavelength range δ emitted from the imaging lens Lw as the light information corresponding to the image information in a very good superposition state, the P-polarized light εp in the wavelength range ε, and the S-polarized light in the wavelength range ε. Optical information is optically decomposed into light in the wavelength range δ, P-polarized light εp in the wavelength range ε, and S-polarized light in the wavelength range ε, and light in each wavelength range δ and P in the wavelength range ε. The images based on the respective light information formed on the spatial light modulators SLMr, SLMb, and SLMg individually provided corresponding to the respective light information of the polarized light εp and the S polarized light of the wavelength range ε are excellently superimposed. It becomes an image for each primary color so that a matching state can be obtained And than that, a problem of the conventional display device described above according to the present invention is being satisfactorily resolved. The difference between the embodiment of the display device shown in FIG. 2 and the embodiment of the display device shown in FIG. 3 is that the imaging lens Lw and the spatial light modulators SLMr, SLMb, The configuration mode between SLMg and
In the display device shown in FIG. 2, spaces are provided between the optical members, whereas in the display device shown in FIG. 3, the optical blocks are provided between the optical members.

Each of the above spatial light modulators SLMr, SL
The image based on the respective optical information formed on Mb and SLMg is recorded by the spatial light modulator SLMr, S by the writing operation of the spatial light modulator as described above with reference to FIG.
Writing to LMb and SLMg is similar to the case of the display device shown in FIG. 2 and 3, a light source that can emit light in a wide wavelength range is used as the light source LS for reading light. The polarization beam splitter PBS on which the read light emitted from the light source LS of the read light is incident reflects the read light of each S-polarized light and makes it enter the dichroic mirror DM3. The dichroic mirror DM3 described above has a transmission characteristic that allows only light in the wavelength range of green light to pass therethrough, as exemplified by the curve DM3 in FIG. The green light component of the light passes through the dichroic mirror DM3 and enters the total reflection mirror M2. Total reflection mirror M2
The green light component incident on is reflected by the total reflection mirror M2 and enters the spatial light modulator SLMg as writing light.

Further, the above-mentioned dichroic mirror DM
The red light component and the blue light component in the read light reflected by 3 enter the dichroic mirror DM4. Since the dichroic mirror DM4 described above has a transmission characteristic that allows only light in the wavelength range of red light to pass therethrough, as illustrated by the curve DM4 in FIG. The red light component of the light passes through the dichroic mirror DM4 and enters the spatial light modulator SLMr as writing light. Further, of the red light component and the blue light component in the read light that has entered the dichroic mirror DM4, the blue light component is reflected by the dichroic mirror DM4 and enters the spatial light modulator SLMb as write light.

Each of the above spatial light modulators SLMr, SL
The Mb and SLMg perform the read operation as described above with reference to FIG. 10, and the optical information including the image information of the red primary color read from the spatial light modulation element SLMr becomes the spatial light modulation element SLMr → dichroic. Mirror DM4 → dichroic mirror DM3 → polarization beam splitter PBS → projection lens Lp → image is formed on the screen by an optical path of a screen (not shown), and spatial light modulator SL
The optical information including the image information of the green primary color read from the Mg screen is displayed by the spatial light modulator SLMg → total reflection mirror M2 → dichroic mirror DM3 → polarization beam splitter PBS → projection lens Lp → the optical path of a screen not shown. An image is formed on the spatial light modulator S
The light information including the image information of the primary blue color read from LMb is the spatial light modulator SLMb → dichroic mirror D.
An image is formed on the screen by M4 → dichroic mirror DM3 → polarization beam splitter PBS → projection lens Lp → the optical path of a screen (not shown). And
Each of the above spatial light modulators SLMr, SLMb, SLM
Since g is installed at the same distance from the main plane of the common projection lens Lp, each spatial light modulator SLM described above is provided.
The image information of each primary color light read from r, SLMb, and SLMg is displayed as an image in a state where it is well overlapped on the same screen by the common projection lens Lp.

Next, the embodiment of the display device of the present invention shown in FIG. 4 has a different wavelength range as in the case of the embodiment of the display device of the present invention described with reference to FIG. The principal rays of a plurality of optical information are made to coincide with each other and are deflected by the common optical deflecting means, the deflected optical information is made incident on the common imaging lens, and the optical information emitted from the imaging lens is , Decomposing for each original light information having different wavelength ranges by a color separation optical system, and writing the above-mentioned optical information for each wavelength range into individual spatial light modulators SLMr, SLMb, SLMg,
The individual spatial light modulators SLMr, SLMb, SL
The optical information individually read out from the Mg is configured to be projected as one image on the screen by a common projection lens. Regarding the embodiment of the display device of the present invention shown in FIG. 4 and FIG. The difference from the above-described display device of the present invention is that it is used as a constituent member of the display device.
The overall configuration and operation are the same as those of the display device described above with reference to FIG. 1, except that the color separation optical system and the three-color synthesis optical system are different in configuration.

In FIG. 4, CSA1, CSA2, CSA3
Are three-color separation (or three-color synthesis) optical systems (Pr, Pb,
Pα and Pβ are prisms, DP and DPa are dichroic prisms, and Mr, Mb, Mα and Mβ are reflecting surfaces. The three-color combining optical system CSA1 is used in the display device described with reference to FIG. Lights of different wavelength ranges emitted from three similar light emitting element arrays REAα, REAβ, REAγ, that is, the light emitting element array REA
Light in the wavelength range α in FIG. 5A emitted from α, light in the wavelength range β in FIG. 5A emitted from the light emitting element array REAβ, and light emitted from the light emitting element array REAγ The light in the wavelength range γ in FIG. 5A and the light fluxes of N light beams in the respective wavelength ranges α, β, γ emitted from the respective light emitting element arrays REAα, REAβ, REAγ as described above. , The respective light fluxes are combined so that the principal rays of the corresponding light fluxes coincide with each other, and the combined light fluxes are given to the common image forming lens L and the common light deflection element Mg. Also in the display device illustrated in FIG. 4, the three light emitting element arrays REAα, REAβ, and REAγ are driven so as to emit light intensity-modulated by the image signal to be displayed. For example, the light emitting element array REAα emits light in the wavelength range α that is intensity-modulated by the image signal of the red primary color in the three primary color signals of the additive color mixture, and the light emitting element array REAβ emits light of the additive color mixture of 3 The light of the wavelength range β, which is intensity-modulated by the image signal of the primary color of blue in the primary color signal, is emitted, and the wavelength in the light emitting element array REAγ, which is intensity-modulated by the image signal of the primary color of green in the three primary color signals of additive color mixture Area γ
It is said to emit the light of.

The N light fluxes of each wavelength range α, β, γ emitted from the above-mentioned optical deflecting element Mg are incident on the dichroic prism DPa in the three-color separation optical system CSA2, and the light of the wavelength range α is Dichroic prism DPa → total reflection surface Mα → prism Pα → spatial light modulation element SLMr through the optical path, and the wavelength region β which is imaged on the photoconductive layer member in the spatial light modulation element SLMr and is incident on the dichroic prism DPa. Light is imaged on the photoconductive layer member in the spatial light modulation element SLMb through the optical path of the dichroic prism DPa → total reflection surface Mβ → prism Pβ → spatial light modulation element SLMb, and is further incident on the dichroic prism DPa. Light in the wavelength range γ is dichroic prism DPa → spatial light modulator SLMg
An image is formed on the photoconductive layer member in the spatial light modulation element SLMg through the optical path of.

Each light emitting element array REAα, RE
The light beams of the respective wavelength ranges α, β, γ emitted from Aβ, REAγ are one optical deflection common to the common imaging lens Lw which is incident in a state where the principal rays of the corresponding light beams are coincident with each other. The spatial light modulator SLM that is configured to include the element Mg and is provided correspondingly through each of the different optical paths having the same optical path length.
Since the images are formed on the r, SLMb, and SLMg, the light emitting element arrays REAα, REAβ, RE
Spatial light modulator S provided corresponding to each of the light fluxes of wavelengths α, β, γ emitted from Aγ
The optical images formed on LMr, SLMb, and SLMg are the same for optical images of light in each wavelength range, even if some distortion occurs due to the light deflection element Mg and the imaging lens Lw. Therefore, the optical information of each wavelength range α, β, γ emitted from the imaging lens Lw as the optical information corresponding to the image information in the extremely excellent superposition state,
Optically decomposed into each wavelength range α, β, γ and connected to each spatial light modulator SLMr, SLMb, SLMg provided individually corresponding to the optical information of each wavelength range α, β, γ. The image based on each of the imaged light information is an image for each primary color for which a good state of superimposition can be obtained.

Each of the above spatial light modulators SLMr, SL
The image based on the respective optical information formed on Mb and SLMg is subjected to the same writing operation as the writing operation of the spatial light modulating element as described above with reference to FIG. 10, and the respective spatial light modulating elements SLMr, SLMb, Written to SLMg. In FIG. 4, LS is a light source for reading light, and as the light source LS for reading light, a light source that can emit light in a wide wavelength range is used. The polarization beam splitter PB on which the reading light emitted from the light source LS of the reading light is incident.
S reflects the read light of each S polarization and makes it incident on the dichroic prism DP of the three-color separation (or combination) optical system CSA3. The dichroic prism DP described above is
Light in the wavelength range of green light is incident on the spatial light modulator SLMg as read light. The red light emitted from the dichroic prism DP described above enters the spatial light modulation element SLMr as writing light in the optical path of the total reflection surface Mr → prism Pr → spatial light modulation element SLMr. Furthermore, the blue light emitted from the above-mentioned dichroic prism DP is
Total reflection surface Mb → Prism Pb → Spatial light modulator SLMb
The light enters the spatial light modulator SLMb as the writing light in the optical path.

Each of the above spatial light modulators SLMr, SL
The Mb and SLMg perform the read operation as described above with reference to FIG. 10, and the optical information including the image information of the red primary color read from the spatial light modulation element SLMr becomes the spatial light modulation element SLMr → prism. Pr → total reflection surface Mr → dichroic prism DP → polarization beam splitter PBS → projection lens Lp → image is formed on the screen by an optical path of a screen (not shown), and spatial light modulator SL
The light information including the image information of the green primary color read from the Mg is the spatial light modulator SLMg → the dichroic prism DP → the polarization beam splitter PBS → the projection lens Lp →
The optical information including the image information of the blue primary color which is imaged on the screen by the optical path of the screen (not shown) and read from the spatial light modulation element SLMb is the spatial light modulation element SLMb → prism Pb → total reflection surface Mb. -> Dichroic prism DP-> polarization beam splitter PBS-> projection lens Lp-> an image is formed on the screen by an optical path of a screen (not shown). Since the spatial light modulators SLMr, SLMb, SLMg described above are installed at the same distance from the main plane of the common projection lens Lp, the spatial light modulators SLMr, SLM described above are provided.
The image information of the primary color lights read from b and SLMg is displayed as an image in a state where they are favorably overlapped on the same screen by the common projection lens Lp.

In the above description, the case where three pieces of light information modulated by respective primary color signals of three primary colors of additive color mixture are synthesized and decomposed to be displayed as an image in a state where they are well overlapped on the screen is described. However, when the image to be displayed is a stereoscopic image signal composed of a right eye signal and a left eye signal, for example, as shown in each embodiment of the display device of the present invention described above. In addition, it is not necessary to use three light emitting element arrays and three spatial light modulation elements, and it is possible to use two light emitting element arrays and two spatial light modulation elements. Therefore, in this case, two light emitting element arrays that can emit light in one wavelength range are used, and the light emitted from one light emitting element array uses S-polarized light, and the other light emitting element array is used. It goes without saying that the display device can be configured such that the light emitted from the P polarized light is used.

[0040]

As is clear from the above description, in the display device of the present invention, the information to be displayed has different wavelength range and / or polarization plane. After decomposing into a plurality of optical information, the principal ray of the above-mentioned plurality of optical information having different one or both of the wavelength range and the polarization plane is matched and deflected by a common optical polarizer, After the light information is made incident on a common image forming lens and the light information emitted from the common image forming lens is decomposed again into a plurality of original light information, either one or both of the above-mentioned wavelength range and polarization plane is obtained. Individual optical information in a plurality of different optical information, each individual in a plurality of optical writing type spatial light modulators each including at least a photoconductive layer member and a light modulation material layer member. Of optical writing type spatial light modulator A plurality of read light beams, each of which is formed by forming an image on a layer member, writes the above-described individual light information into each individual optical writing type spatial light modulation element, and emits the light emitted from the light source of the read light in a predetermined wavelength range. Read light occupying individual wavelength regions in the plurality of read light,
The plurality of optical writing type spatial light modulators are used as reading light of a predetermined one in the above-mentioned plurality of optical writing type spatial light modulators to read optical information from each optical writing type spatial light modulator. The optical information read out individually from the modulator is such that the principal rays are matched and are incident on a common projection lens to display an image on the screen. The above-mentioned problems that have been problematic in a display device such as a display device configured by using a plurality of lenses and light deflection elements, and the chief ray of a light beam emitted from a plurality of optical information sources is an optical system. Since it is possible to favorably solve the above-mentioned problems that have been problematic in the display device having a configuration mode that deviates from the optical axis, the display device of the present invention can output a plurality of optical information, for example, even in the case of color image information. Ai It is possible to obtain a good display image even when the stereoscopic image information.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a display device of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a display device of the present invention.

FIG. 3 is a block diagram showing a schematic configuration of a display device of the present invention.

FIG. 4 is a block diagram showing a schematic configuration of a display device of the present invention.

FIG. 5 is a characteristic example diagram for explanation.

FIG. 6 is a characteristic example diagram for explanation.

FIG. 7 is a characteristic example diagram for explanation.

FIG. 8 is a block diagram showing a schematic configuration of a conventional display device.

FIG. 9 is a block diagram showing a schematic configuration of a conventional display device.

FIG. 10 is a side view showing a schematic configuration of a spatial light modulator.

[Explanation of symbols]

REAr, REAg, REAb, REAδ, REAε
p, REA εs ... Light emitting element array, CSA, CSA1, C
SA2 ... 3-color separation (or 3-color synthesis) optical system, Pr, P
b, Pα, Pβ ... Prism, DP, DPa ... Dichroic prism, Mr, Mb, Mα, Mβ ... Reflecting surface, L
w, L, Lr, Lg, Lb ... Imaging lens, DMr, DM
g, DMb, Mb ... Optical deflection element, SLMr, SLMg,
SLMb ... Optical writing type spatial light modulator, PBS, PB
S1, PBS2 ... Polarizing beam splitter, LS ... Readout light source, Lp ... Projection lens, S ... Screen, PCL ...
Photoconductive layer member, BP1, BP2 ... Substrate, Et1, Et2 ... Transparent electrode, PCL ... Photoconductive layer member, DML ... Dielectric mirror,
PML ... Light modulation material layer member, E ... Power supply,

Continuation of front page (51) Int.Cl. ⁵ Identification number Reference number within the agency FI Technical indication location // G09G 3/02 8621-5G (72) Inventor Tetsuji Suzuki 3-12 Moriya-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Local Victor Company of Japan (72) Inventor Futako Tatsumi 3-12 Moriya-cho, Kanagawa-ku, Kanagawa Prefecture Local Victor Company of Japan (72) Ryusaku Takahashi 3--12 Moriya-cho, Kanagawa-ku, Kanagawa Prefecture Address: Within Victor Company of Japan, Ltd. (72) Hiroyuki Bonde, 3-12 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa Prefecture: Address: Within Victor Company of Japan (72) Tsutomu Matsumura, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama Address 12 Victor Company of Japan, Ltd.

Claims (3)

[Claims] 1. A means for decomposing information to be displayed into a plurality of optical information having different wavelength ranges and a chief ray of the plurality of optical information having different wavelength ranges are matched with each other. To deflect the light deflected by the light deflecting means to the common image forming lens, and the optical information emitted from the common image forming lens again. Means for decomposing into a plurality of optical information having different wavelength ranges, and at least the individual optical information in the plurality of optical information having different wavelength ranges, respectively, at least a photoconductive layer member and a light modulation material layer. A plurality of optical writing type spatial light modulators each including a member, and an image is formed on the photoconductive layer member of each individual optical writing type spatial light modulator, and the plurality of optical writings described above are formed. Type spatial light modulator A means for individually writing individual optical information in a plurality of optical information having different noted wavelength ranges,
Means for decomposing the light emitted from the light source of the reading light into a plurality of reading lights respectively occupying a predetermined wavelength range, and the individual reading light in the plurality of reading lights, the plurality of optical writing type spaces A means for giving a read light to a predetermined one in the light modulation element and a principal ray of each light information individually read from the plurality of optical writing type spatial light modulation elements are made to coincide with each other to form a common projection lens. A display device comprising means for making the light incident and means for projecting the light information emitted from the common imaging lens onto the screen. 2. A means for decomposing information to be displayed into a plurality of optical information having different polarization planes, and a chief ray of the plurality of optical information having different polarization planes are matched with each other. To deflect the light deflected by the light deflecting means to the common image forming lens, and the optical information emitted from the common image forming lens again. Means for decomposing into a plurality of optical information having different polarization planes, and individual optical information in the plurality of optical information having different polarization planes, respectively, at least a photoconductive layer member and a light modulation material layer, respectively. A plurality of optical writing type spatial light modulators each including a member, and an image is formed on the photoconductive layer member of each individual optical writing type spatial light modulator, and the plurality of optical writings described above are formed. Type spatial light modulator A means for individually writing individual optical information in a plurality of optical information having different light surfaces, and a means for decomposing the light emitted from the light source of the reading light into a plurality of reading lights each occupying a predetermined wavelength range. A means for giving individual read light in the plurality of read light as read light to a predetermined one in the plurality of optical write type spatial light modulators, and the plurality of optical write type spatial light It is composed of means for making the principal rays of each piece of light information individually read out from the modulation element coincident to be incident on a common projection lens, and means for projecting the light information emitted from the common imaging lens on the screen. Display device. 3. A means for decomposing information to be displayed into a plurality of optical information having different wavelength ranges and a plurality of optical information having different polarization planes, and different wavelength ranges described above. Means for aligning the chief rays of a plurality of optical information with the chief rays of a plurality of optical information having different polarization planes and deflecting them by a common optical deflecting means, and the light deflected by the optical deflecting means. Means for entering a common imaging lens,
A means for decomposing the optical information emitted from the common imaging lens into a plurality of optical information having different original wavelength ranges and a plurality of optical information having different polarization planes, and the wavelength range described above. The individual light information in the plurality of light information different from each other and the plurality of light information different in polarization planes, respectively,
Forming an image on the photoconductive layer member of each individual optical writing type spatial light modulation element in a plurality of optical writing type spatial light modulation elements configured to include at least a photoconductive layer member and a light modulation material layer member Then, the individual optical information in the plurality of optical information having different wavelength ranges and the individual optical information in the plurality of optical information having different polarization planes are individually applied to the plurality of spatial light modulators of the optical writing type. Writing means, means for decomposing the light emitted from the light source of the reading light into a plurality of reading lights each occupying a predetermined wavelength range, and individual reading light in the plurality of reading light described above, A means for giving a predetermined light in a spatial light modulator of the optical writing type as a read light and a chief ray of each optical information individually read from the plurality of spatial light modulators of the optical writing type are matched. Common projection A means for entering the lens, a display device and means for projecting light information emitted from a common imaging lens described above to screen.