WO2012066776A1 - 光偏向器及びこれを用いた液晶表示装置 - Google Patents
光偏向器及びこれを用いた液晶表示装置 Download PDFInfo
- Publication number
- WO2012066776A1 WO2012066776A1 PCT/JP2011/006376 JP2011006376W WO2012066776A1 WO 2012066776 A1 WO2012066776 A1 WO 2012066776A1 JP 2011006376 W JP2011006376 W JP 2011006376W WO 2012066776 A1 WO2012066776 A1 WO 2012066776A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- liquid crystal
- deflection
- optical deflector
- elements
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/291—Two-dimensional analogue deflection
Definitions
- the present invention relates to an optical deflector for deflecting light and a liquid crystal display device using the same.
- An optical deflector is an indispensable device in a laser scanner used in, for example, a laser printer.
- a polygon scanner, a galvano scanner, a MEMS mirror, or the like has been used as an optical deflector.
- such polygon scanners, galvano scanners, MEMS mirrors, and the like have a problem in that failure is likely to occur because they have movable parts (mechanical mechanisms) for moving parts. Therefore, development of an optical deflector that can deflect light without providing a movable part is desired.
- FIGS. 7A and 7B A conventional optical deflector will be described with reference to FIGS. 7A and 7B.
- 7A is a cross-sectional view of a conventional optical deflector
- FIG. 7B is a cross-sectional view of the optical deflector taken along line AA in FIG. 7A.
- the illustrated optical deflector 50 includes a liquid crystal deflecting element 501 and a pair of electrodes 502 a, 502 b, and 502 c arranged around the liquid crystal deflecting element 501.
- the liquid crystal deflecting element 501 includes a liquid crystal 503 having a triangular cross section and a dielectric 504 having a shape complementary to the shape of the liquid crystal 503.
- the dielectric 504 is disposed on the inclined surface side of the liquid crystal 503, whereby the liquid crystal deflecting element 501 is configured to have a rectangular cross section as a whole.
- the dielectric 504 can be made of, for example, a polymer resin such as plastic, or glass.
- the three pairs of electrodes 502a, 502b, and 502c are disposed so as to face each other with the liquid crystal deflecting element 501 interposed therebetween.
- the refractive index of the liquid crystal 503 is modulated, and the light incident on the liquid crystal deflecting element 501 is deflected.
- 7A and 7B three pairs of electrodes 502a, 502b, and 502c are provided. However, only one pair of these electrodes or only two pairs of electrodes are included. It can also comprise so that it may provide.
- the pair of electrodes 502b is preferably a transparent electrode so that light can pass through the pair of electrodes 502b.
- the light deflection angle can be modulated.
- a plurality (three in FIG. 8) of liquid crystal deflecting elements 501a, 501b, and 501c can be arranged side by side.
- dielectrics 504a, 504b, and 504c are arranged on the inclined surfaces of the liquid crystal deflecting elements 501a, 501b, and 501c, respectively.
- the dielectrics 504a, 504b, and 504c are integrally molded.
- wide light for example, linear light or planar light
- the conventional optical deflector described above has the following problems.
- diffracted light is generated in the direction of the angle ⁇ that satisfies a predetermined condition.
- diffracted light is generated in the direction indicated by the arrow 506.
- Equation 1 ⁇ is the wavelength of the light 111, ND is the refractive index of the dielectrics 504a, 504b, and 504c, and n is an arbitrary integer.
- ⁇ is the outgoing angle of the diffracted light with respect to the vertical direction (vertical direction in FIG. 8). For example, when the light is deflected in the direction indicated by the arrow 505m in FIG. 8, diffracted light is generated in the direction of the angle ⁇ , so that the amount of light deflected in the direction indicated by the arrow 505m in FIG. Decreases by the amount of diffracted light.
- a liquid crystal display device such as a tablet-type 3D (three dimensions) display is configured using the above-described conventional optical deflector.
- the liquid crystal display device configured as described above has the following problems. As described above, since the light deflection angle cannot be increased in the optical deflector, there arises a problem that the viewing angle of the liquid crystal display device becomes narrow. Further, as described above, a light quantity loss due to the generation of diffracted light occurs in the optical deflector, which causes a problem that the luminance of the liquid crystal display device is lowered.
- the present invention solves the above-described conventional problems, and an object of the present invention is to use an optical deflector capable of increasing a light deflection angle and reducing a light amount loss due to generation of diffracted light, and the same.
- a liquid crystal display device is provided.
- an optical deflector is an optical deflector capable of deflecting light in a predetermined deflection direction and modulating a deflection angle of the light, and the predetermined deflection direction.
- a plurality of optical deflection elements arranged side by side, and at least one pair of adjacent optical deflection elements, the size of one optical deflection element in the predetermined deflection direction is the predetermined one of the other optical deflection element Different from the size in the deflection direction.
- an angle magnifying lens provided on the light emission side of the plurality of light deflection elements is provided, and a deflection angle of light emitted from the plurality of light deflection elements is enlarged by the angle magnifying lens.
- the deflection angle of the light emitted from the optical deflector can be increased.
- the plurality of light deflection elements are laminated in a direction from the light incident side toward the light emitting side.
- the deflection angle of the light emitted from the optical deflector can be increased.
- Each of the plurality of light deflecting elements is a liquid crystal deflecting element, and a voltage is applied to each of the plurality of liquid crystal deflecting elements to modulate the refractive index of each of the plurality of liquid crystal deflecting elements.
- the light incident on each of the liquid crystal deflecting elements is preferably deflected by refraction.
- An optical deflector is an optical deflector capable of deflecting light in a predetermined deflection direction by diffraction and modulating the light deflection angle, and is arranged side by side in the predetermined deflection direction.
- a plurality of liquid crystal deflecting elements, and each of the plurality of liquid crystal deflecting elements has substantially the same size in the predetermined deflection direction, and a voltage is applied to each of the plurality of liquid crystal deflecting elements to By modulating the refractive index of each of the plurality of liquid crystal deflecting elements, light incident on each of the plurality of liquid crystal deflecting elements is deflected by diffraction.
- each of the plurality of liquid crystal deflecting elements in the predetermined deflection direction of the opening where light enters is 50 ⁇ m or less.
- an angle expansion lens provided on the light emission side of the plurality of liquid crystal deflection elements is provided, and a deflection angle of light emitted from the plurality of liquid crystal deflection elements is expanded by the angle expansion lens.
- the deflection angle of the light emitted from the optical deflector can be increased.
- the plurality of liquid crystal deflecting elements are preferably laminated in a plurality of layers in a direction from the light incident side to the light emitting side.
- the deflection angle of the light emitted from the optical deflector can be increased.
- a liquid crystal display device includes the optical deflector according to any one of claims 1 to 8, a light source provided on a light incident side of the optical deflector, and the light A liquid crystal panel provided on the light emission side of the deflector, and the light emitted from the light source is incident on the optical deflector and deflected by the optical deflector and then emitted from the optical deflector. And is incident on the liquid crystal panel.
- the viewing angle of the liquid crystal display device can be widened.
- the light amount loss due to the generation of diffracted light in the optical deflector is reduced, the luminance of the liquid crystal display device can be increased.
- the light source is configured to sequentially emit light of a plurality of colors having different wavelengths, and when the light of the plurality of colors having different wavelengths emitted from the light source is sequentially incident on the optical deflector,
- the refractive index of each of the plurality of light deflecting elements or the refractive index of each of the plurality of liquid crystal deflecting elements may be modulated in accordance with the wavelength of incident light so that the deflection angles of different colors of light are the same. preferable.
- a liquid crystal display device includes an optical deflector that deflects light in a predetermined deflection direction, and a light incident side of the optical deflector, and emits light toward the optical deflector.
- a light source that emits light, and a liquid crystal panel that is provided on a light emission side of the light deflector and into which the light deflected by the light deflector is incident, and the liquid crystal panels are arranged in a predetermined direction.
- Each of the plurality of pixels is composed of a plurality of sub-pixels, and the arrangement direction of the plurality of sub-pixels is orthogonal to the predetermined deflection direction.
- the light is incident on the plurality of sub-pixels in the same amount regardless of the deflection angle at which the light is deflected in the pixel.
- a high-quality liquid crystal display device that does not cause color unevenness can be realized.
- a liquid crystal display device includes an optical deflector that deflects light in a predetermined deflection direction, and a light incident side of the optical deflector, and emits light toward the optical deflector.
- a light source that emits light
- a liquid crystal panel that is provided on a light emission side of the light deflector and into which the light deflected by the light deflector is incident.
- the light deflector is arranged in the predetermined deflection direction.
- the liquid crystal panel includes a plurality of pixels arranged side by side in the predetermined deflection direction, and each of the plurality of pixels has a size in the predetermined deflection direction. The size of each of the plurality of light deflection elements is larger than the size in the predetermined deflection direction.
- the size of each of the plurality of pixels in the predetermined deflection direction is preferably an integer multiple of the size of each of the plurality of light deflection elements in the predetermined deflection direction.
- the spatial frequency in the deflection direction of the optical deflection element is a constant multiple of the spatial frequency in the deflection direction of the pixel, the occurrence of moire can be prevented and a high-quality liquid crystal display device can be realized.
- a detection unit that detects the positions of the right eye and the left eye of a viewer viewing the liquid crystal panel, and the deflection angle of the light by the optical deflector are controlled based on the positions of the right eye and the left eye detected by the detection unit.
- a liquid crystal display device as a 3D display can be realized.
- the light deflection angle can be increased, and the light loss caused by the generation of diffracted light can be reduced. Further, in the liquid crystal display device of the present invention, by using the above-described optical deflector, the viewing angle can be widened and the light utilization efficiency can be increased.
- FIG. 1 is a sectional view showing an optical deflector according to Embodiment 1 of the present invention.
- FIG. 2 is a sectional view showing an optical deflector according to Embodiment 2 of the present invention.
- FIG. 3 is a sectional view showing an optical deflector according to Embodiment 3 of the present invention.
- FIG. 4 is a diagram showing a liquid crystal display device according to Embodiment 4 of the present invention.
- FIG. 5A is a diagram illustrating an extracted light source, an optical deflector, and a liquid crystal panel in the liquid crystal display device of FIG.
- FIG. 5B is an enlarged view of a region S surrounded by a dashed line in FIG. 5A.
- FIG. 6 is a diagram illustrating an arrangement of a plurality of pixels constituting the liquid crystal panel.
- FIG. 7A is a cross-sectional view showing a conventional optical deflector.
- FIG. 7B is a cross-sectional view of the optical deflector cut along line AA in FIG. 7A.
- FIG. 8 is a cross-sectional view showing a conventional optical deflector in which a plurality of optical deflecting elements are arranged side by side.
- FIG. 1 is a cross-sectional view showing an optical deflector 10 according to Embodiment 1 of the present invention.
- the illustrated optical deflector 10 is configured by arranging a plurality (three in the present embodiment) of liquid crystal deflecting elements 101a, 101b, and 101c side by side in the light deflection direction (left-right direction in FIG. 1). .
- Each of these liquid crystal deflection elements 101a, 101b, and 101c constitutes an optical deflection element.
- Each of the liquid crystal deflecting elements 101a, 101b, 101c includes a liquid crystal 102a, 102b, 102c having a triangular cross section and dielectrics 103a, 103b, 103c having shapes complementary to the shapes of the liquid crystals 102a, 102b, 102c.
- the dielectrics 103a, 103b, and 103c are disposed on the inclined side of the liquid crystals 102a, 102b, and 102c. Accordingly, each of the liquid crystal deflecting elements 101a, 101b, and 101c is configured to have a rectangular cross section as a whole.
- the dielectrics 103a, 103b, and 103c can be made of a polymer resin such as plastic, or glass, for example. In the present embodiment, the dielectrics 103a, 103b, and 103c are integrally molded.
- the size Wa of the liquid crystal deflection element 101a, the size Wb of the liquid crystal deflection element 101b, and the size Wc of the liquid crystal deflection element 101c in the light deflection direction are set to different sizes.
- the size Wa of the liquid crystal deflecting element 101a is 100 ⁇ m
- the size Wb of the liquid crystal deflecting element 101b is 80 ⁇ m
- the size Wc of the liquid crystal deflecting element 101c is 120 ⁇ m.
- the inclination angle ⁇ a of the inclined surface of the liquid crystal 102a, the inclination angle ⁇ b of the inclined surface of the liquid crystal 102b, and the inclination angle ⁇ c of the inclined surface of the liquid crystal 102c are all set to the same magnitude.
- a pair of electrodes (not shown) for applying a voltage to the liquid crystals 102a, 102b, 102c of the liquid crystal deflecting elements 101a, 101b, 101c are provided.
- the pair of electrodes are arranged so as to face each other with the liquid crystal deflecting elements 101a, 101b, and 101c interposed therebetween.
- the refractive index NL of each liquid crystal 102a, 102b, 102c can be modulated with a predetermined modulation width.
- the refractive index NL of each of the liquid crystals 102a, 102b, 102c is higher than the refractive index ND of the dielectrics 103a, 103b, 103c.
- the refractive index NL of each liquid crystal 102a, 102b, 102c is greater than the refractive index ND of each dielectric 103a, 103b, 103c. Also lower.
- the refractive index NL of each of the liquid crystals 102a, 102b, and 102c is the same value as the refractive index ND of each of the dielectrics 103a, 103b, and 103c.
- an angle magnifying lens 104 is disposed on the light emission side of each of the liquid crystal deflecting elements 101a, 101b, and 101c.
- the angle magnifying lens 104 is configured by combining a concave lens 105 and a convex lens 106.
- a convex lens 106 and a concave lens 105 are arranged in this order from the side closer to the light emission side of each liquid crystal deflection element 101a, 101b, 101c.
- a light source (not shown) is disposed on the light incident side of the optical deflector 10. As indicated by an arrow 107 in FIG. 1, light from the light source enters from the incident end face (the lower face in FIG. 1) of each liquid crystal 102a, 102b, 102c.
- each liquid crystal 102a, 102b, 102c and the refractive index ND of each dielectric 103a, 103b, 103c have the same value.
- the light incident from the incident end face of each liquid crystal 102a, 102b, 102c is not refracted at the interface between each liquid crystal 102a, 102b, 102c and each dielectric 103a, 103b, 103c, and the arrow 107s in FIG. Go straight as shown in.
- the light deflection angle is an angle at which the light is deflected with respect to the vertical direction (vertical direction in FIG. 1). In this case, the light deflection angle is 0 °.
- the light emitted from the liquid crystal deflecting elements 101a, 101b, and 101c passes through the convex lens 106 and the concave lens 105 of the angle expansion lens 104 and further advances straight, and is emitted from the angle expansion lens 104 as indicated by an arrow 108s in FIG. .
- the refractive index NL of each of the liquid crystals 102a, 102b, and 102c is higher than the refractive index ND of each of the dielectrics 103a, 103b, and 103c.
- 11 is refracted at the interface between each liquid crystal 102a, 102b, 102c and each dielectric 103a, 103b, 103c, as indicated by an arrow 107h in FIG.
- the deflection angle of light is alpha 1.
- the light deflected and emitted from the liquid crystal deflecting elements 101a, 101b, and 101c passes through the angle magnifying lens 104 and then exits from the angle magnifying lens 104 as indicated by an arrow 108h in FIG.
- the light deflection angle is magnified by the convex lens 106 and the concave lens 105 of the angle magnifying lens 104. Therefore, the deflection angle ⁇ 1 of the light emitted from the angle expansion lens 104 is larger than the deflection angle ⁇ 1 of the light emitted from the liquid crystal deflecting elements 101a, 101b, 101c.
- the refractive index NL of each of the liquid crystals 102a, 102b, 102c is lower than the refractive index ND of each of the dielectrics 103a, 103b, 103c.
- the light 11 is refracted at the interface between each liquid crystal 102a, 102b, 102c and each dielectric 103a, 103b, 103c, as indicated by an arrow 107m in FIG. In this case, the deflection angle of light is alpha 2.
- the light deflected and emitted from the liquid crystal deflecting elements 101a, 101b, and 101c passes through the angle magnifying lens 104 and then exits from the angle magnifying lens 104 as indicated by an arrow 108m in FIG.
- the deflection angle ⁇ 2 of the light deflected and emitted from the liquid crystal deflection elements 101 a, 101 b, 101 c is magnified by the angle magnifying lens 104.
- the deflection angle ⁇ 2 of the light emitted from the angle expanding lens 104 becomes larger than the deflection angle ⁇ 2 of the light emitted from the liquid crystal deflection elements 101a, 101b, 101c.
- the arrangement structure of the plurality of liquid crystal deflecting elements 101a, 101b, and 101c is a non-periodic structure, so that the predetermined condition expressed by the above formula 1 is not satisfied, and the generation of diffracted light can be reduced.
- the three liquid crystal deflection elements 101a, 101b, and 101c are arranged in the light deflection direction, but the present invention is not limited to this.
- two liquid crystal deflecting elements or four or more liquid crystal deflecting elements can be arranged side by side in the light deflection direction.
- a plurality of liquid crystal deflecting elements are arranged in a matrix in a predetermined deflection direction (left-right direction in FIG. 1) and in a direction perpendicular to the predetermined deflection direction (direction perpendicular to the paper surface of FIG. 1). You can also.
- the liquid crystal deflecting elements 101a, 101b, and 101c that deflect light by refraction are described as the light deflecting elements constituting the optical deflector 10.
- the present invention is not limited to this, and light other than refraction is used.
- Other optical deflecting elements that are deflected by this method can also be used.
- the angle expansion lens 104 is configured by a combination of the convex lens 106 and the concave lens 105.
- the present invention is not limited thereto, and may be configured by another type of single lens or a combination of other types of lenses. You can also.
- FIG. 2 is a cross-sectional view showing an optical deflector 20 according to Embodiment 2 of the present invention.
- the illustrated optical deflector 20 includes a plurality of liquid crystal deflecting elements 101a, 101b, and 101c according to the first embodiment in a direction from the light incident side to the light emission side (a direction from the lower side to the upper side in FIG. 2). It is configured by stacking layers (two layers in this embodiment).
- Angle magnifying lenses 104 are arranged on the light emission sides of the upper liquid crystal deflecting elements 101a, 101b, and 101c, respectively.
- a pair of electrodes (not shown) for applying a voltage to the liquid crystals 102a, 102b, 102c of the upper and lower liquid crystal deflecting elements 101a, 101b, 101c are provided.
- the pair of electrodes are arranged so as to face each other with the upper and lower liquid crystal deflecting elements 101a, 101b, and 101c interposed therebetween.
- the refractive index NL of each of the liquid crystals 102a, 102b, and 102c and the dielectrics 103a, 103b, and 103c is the same value.
- the light travels straight through the lower liquid crystal deflecting elements 101a, 101b, and 101c as indicated by an arrow 201s in FIG. 2, and thereafter, as indicated by an arrow 202s in FIG. Go straight through the elements 101a, 101b, 101c.
- the light deflection angle is 0 °.
- the light emitted from the upper liquid crystal deflecting elements 101a, 101b, and 101c passes through the angle magnifying lens 104 and further advances straight, and is emitted from the angle magnifying lens 104 as indicated by an arrow 203s in FIG.
- the refractive index NL of each of the liquid crystals 102a, 102b, and 102c in each of the upper and lower liquid crystal deflecting elements 101a, 101b, and 101c is the dielectric 103a, It becomes higher than the refractive index ND of 103b and 103c.
- the light incident from the incident end faces of the lower liquid crystals 102a, 102b, and 102c is transmitted between the liquid crystals 102a, 102b, and 102c and the dielectrics 103a, 103b, and 103c, as indicated by arrows 201h in FIG. Refracted at the interface.
- the deflection angle of light is alpha 1.
- the light deflected and emitted from the lower liquid crystal deflecting elements 101a, 101b, and 101c is incident from the incident end surfaces of the liquid crystals 102a, 102b, and 102c of the upper liquid crystal deflecting elements 101a, 101b, and 101c.
- the incident light is refracted at the interface between each liquid crystal 102a, 102b, 102c and each dielectric 103a, 103b, 103c, as indicated by an arrow 202h in FIG.
- the deflection angle of light is 2.alpha 1.
- the deflection angle 2 ⁇ 1 of the light emitted from the upper liquid crystal deflecting elements 101a, 101b, 101c is larger than the deflection angle ⁇ 1 of the light emitted from the lower liquid crystal deflecting elements 101a, 101b, 101c (about twice). growing.
- Light emitted from the upper liquid crystal deflecting elements 101 a, 101 b, and 101 c passes through the angle magnifying lens 104 and then exits from the angle magnifying lens 104.
- the light deflection angle is magnified by the convex lens 106 and the concave lens 105 of the angle magnifying lens 104.
- the deflection angle ⁇ 1 ′ of the light emitted from the angle expansion lens 104 becomes larger than the deflection angle 2 ⁇ 1 of the light emitted from the upper liquid crystal deflection elements 101a, 101b, 101c.
- the refractive index NL of each of the liquid crystals 102a, 102b, 102c in each of the upper and lower liquid crystal deflecting elements 101a, 101b, 101c It becomes lower than the refractive index ND of 103a, 103b, 103c.
- the deflection angle of light is alpha 2.
- the deflection angle of light is 2.alpha 2.
- the deflection angle 2 ⁇ 2 of the light emitted from the upper liquid crystal deflecting elements 101a, 101b, 101c is larger than the deflection angle ⁇ 2 of the light emitted from the lower liquid crystal deflecting elements 101a, 101b, 101c (about twice). growing.
- the deflection angle of the light emitted from the optical deflector 20 can be increased by laminating a plurality of liquid crystal deflecting elements 101a, 101b, 101c.
- the liquid crystal deflecting elements 101a, 101b, and 101c are stacked in two layers, but three or four or more layers may be stacked. As the number of stacked liquid crystal deflecting elements 101a, 101b, and 101c increases, the deflection angle of light emitted from the optical deflector 20 is further expanded.
- FIG. 3 is a cross-sectional view showing an optical deflector 30 according to Embodiment 3 of the present invention.
- the illustrated optical deflector 30 is configured by arranging a plurality (three in the present embodiment) of liquid crystal deflecting elements 301a, 301b, and 301c in the light deflection direction (left-right direction in FIG. 3).
- Each of the liquid crystal deflecting elements 301a, 301b, and 301c is composed of liquid crystals 302a, 302b, and 302c having a rectangular cross section.
- the size D of each liquid crystal deflecting element 301a, 301b, 301c in the light deflection direction is configured to be substantially the same size.
- a light amount limiting unit 303 is disposed on the incident end faces of the plurality of liquid crystal deflecting elements 301a, 301b, and 301c.
- the light amount limiting unit 303 is configured by a diffraction grating, and the light amount limiting unit 303 is provided with a plurality of aperture limiting units 304a, 304b, and 304c corresponding to the plurality of liquid crystal deflection elements 301a, 301b, and 301c.
- the size D 'of the aperture limiting portions 304a, 304b, and 304c in the light deflection direction is configured to be smaller than the size D of the liquid crystal deflection elements 301a, 301b, and 301c in the light deflection direction.
- a pair of electrodes (not shown) for applying a voltage to each of the liquid crystals 302a, 302b, and 302c are provided.
- the pair of electrodes are arranged so as to face each other with the plurality of liquid crystal deflecting elements 301a, 301b, and 301c interposed therebetween.
- a method of deflecting light by the optical deflector 30 of this embodiment will be described.
- Light incident from the incident end surfaces (lower surfaces in FIG. 3) of the liquid crystal deflecting elements 301a, 301b, and 301c is diffracted by the aperture restricting portions 304a, 304b, and 304c of the light amount restricting portion 303, while being diffracted. It propagates in 302b and 302c.
- the size of each of the liquid crystal deflecting elements 301a, 301b, and 301c in the light deflection direction is D
- the light travels in the direction of an angle ⁇ that satisfies the following Expression 2 by diffraction.
- Equation 2 n is an integer, ⁇ is the wavelength of light, and NL is the refractive index of the liquid crystals 302a, 302b, and 302c.
- each of the liquid crystals 302a, 302b, and 302c is configured to have a rectangular cross section, but each of the liquid crystals 302a, 302b, and 302c may be configured to have a prism shape, for example. Thereby, the intensity
- the size D ′ of the aperture limiting portions 304a, 304b, and 304c in the light deflection direction is 50 ⁇ m or less. The reason will be described as follows.
- the diffracted light is generated in the direction of the angle ⁇ satisfying the above formula 2 in the angle range limited by the following formula 3.
- an aspect ratio that can be manufactured for a prism composed of a liquid crystal and a dielectric (the size of the prism in the horizontal direction: the size of the prism in the vertical direction) ) Is about 10: 1. Since the difference between the refractive index of the liquid crystal and the refractive index of the dielectric is about 0.1 at the maximum, the refractive angle is about 0.6 ° at the maximum. In order to deflect light by diffraction at an angle larger than this, in the case of light having a wavelength of 532 nm (green light), the aperture width (that is, the light of each liquid crystal deflecting element 301a, 301b, 301c is calculated from Equation 3.
- the size of the opening in which light enters is about 50 ⁇ m or less. Therefore, by setting the size D ′ of the aperture limiting portions 304a, 304b, and 304c in the light deflection direction to 50 ⁇ m or less, the light can be deflected by diffraction at an angle larger than the maximum refraction angle.
- an angle magnifying lens can be disposed on the light emission side of each of the liquid crystal deflecting elements 301a, 301b, and 301c.
- deviation element 301a, 301b, 301c can be expanded.
- a plurality of liquid crystal deflecting elements 301a, 301b, and 301c may be stacked in a direction from the light incident side toward the light emitting side. it can.
- the light amount limiting unit 303 is provided.
- the light amount limiting unit 303 can be omitted.
- the liquid crystal deflection elements 301a, 301b, and 301c have substantially the same size D in the light deflection direction, so that the light diffraction effect in each of the liquid crystal deflection elements 301a, 301b, and 301c. Can be obtained.
- FIG. 4 is a diagram showing a liquid crystal display device 40 according to the fourth embodiment.
- the illustrated liquid crystal display device 40 includes a rectangular frame (not shown), and in this frame, a light source 401, an optical deflector 402, a liquid crystal panel 403, a right camera 404a, a left camera 404b, and a control unit 405 are accommodated. ing.
- the liquid crystal display device 40 of the present embodiment is configured with, for example, a tablet-type 3D display panel.
- the optical deflector 402 is configured to deflect incident light in a predetermined deflection direction (left-right direction in FIG. 4) and to modulate the deflection angle of the light.
- the optical deflector 402 for example, the optical deflector 10 of the first embodiment, the optical deflector 20 of the second embodiment, or the optical deflector 30 of the third embodiment can be used.
- the optical deflector 402 is configured in a panel shape, and a plurality of optical deflecting elements 406 (see FIG. 5A) configuring the optical deflector 402 are arranged in a matrix.
- the light source 401 is composed of a planar light source and is disposed to face the incident end face of the optical deflector 402. Light emitted from the light source 401 enters the incident end face of the optical deflector 402.
- the liquid crystal panel 403 is disposed to face the emission end face of the optical deflector 402.
- a plurality of pixels 407 are arranged in a matrix.
- the right camera 404a detects the position of the right eye 409a of the viewer 408 who visually recognizes the liquid crystal display device 40.
- the left camera 404b detects the position of the left eye 409b of the viewer 408 who views the liquid crystal display device 40.
- the right camera 404a and the left camera 404b constitute a detection unit.
- the control unit 405 is applied to the liquid crystal (not shown) of each light deflection element 406 constituting the light deflector 402 based on the right eye position detection signal from the right camera 404a and the left eye position detection signal from the left camera. By controlling the voltage, the refractive index of the liquid crystal is modulated.
- FIG. 5A is a diagram in which the light source 401, the optical deflector 402, and the liquid crystal panel 403 are extracted from FIG.
- FIG. 5B is an enlarged view of a region S surrounded by a dashed line in FIG. 5A.
- the size Wp of the pixel 407 constituting the liquid crystal panel 403 in the light deflection direction is larger than the size Wh of the light deflection element 406 in the light deflection direction. Is configured to be larger. Thereby, since the light emitted from the light deflection element 406 enters all the pixels 407, all the pixels 407 can be illuminated without any problem.
- the size Wp of the pixel 407 in the light deflection direction is preferably an integral multiple of the size Wh of the light deflection element 406 in the light deflection direction. Accordingly, loss due to absorption of light incident on a boundary portion between a pair of adjacent pixels 407 can be reduced, so that light use efficiency can be increased. Furthermore, since the spatial frequency in the deflection direction of the light deflection element 406 is a constant multiple of the spatial frequency in the deflection direction of the pixel 407, the occurrence of moire is prevented, and the high-quality liquid crystal display device 40 can be realized.
- FIG. 6 is a diagram illustrating an arrangement of a plurality of pixels 407 constituting the liquid crystal panel 403.
- the pixel 407 includes three sub-pixels, that is, a red sub-pixel 407r, a green sub-pixel 407g, and a blue sub-pixel 407b.
- the red sub-pixel 407r, the green sub-pixel 407g, and the blue sub-pixel 407b are arranged in a direction orthogonal to the light deflection direction (left-right direction in FIG. 6).
- the light is divided into three parts to each of the red sub-pixel 407r, the green sub-pixel 407g, and the blue sub-pixel 407b regardless of the deflection angle in the pixel 407. Are incident in equal amounts. Thereby, it is possible to realize a high-quality liquid crystal display device 40 that does not cause color unevenness.
- the right camera 404a and the left camera 404b detect the positions of the right eye 409a and the left eye 409b of the viewer 408 who views the liquid crystal display device 40, respectively.
- the right eye position detection signal from the right camera 404a and the left eye position detection signal from the left camera 404b are respectively sent to the control unit 405.
- the control unit 405 controls the voltage applied to the liquid crystal of each light deflection element 406 constituting the light deflector 402 based on the right eye position detection signal from the right camera 404a and the left eye position detection signal from the left camera 404b. As a result, the refractive index of the liquid crystal of each light deflection element 406 is modulated.
- the light source 401 starts lighting, the light emitted from the light source 401 passes through the light deflector 402 and the liquid crystal panel 403 and is emitted toward the outside of the liquid crystal display device 40. At this time, an image is formed on the liquid crystal panel 403 by illuminating the liquid crystal panel 403 with the light emitted from the optical deflector 402.
- the controller 405 modulates the refractive index of the liquid crystal of each light deflection element 406 until a predetermined time elapses after the light source 401 starts lighting.
- the light emitted from the light source 401 is deflected by the optical deflector 402 as indicated by an arrow 410a in FIG. 4 and collected at the position of the right eye 409a of the viewer 408.
- the right-eye image is displayed on the liquid crystal panel 403 at the timing when the light is deflected toward the right eye 409a.
- the control unit 405 modulates the refractive index of the liquid crystal of each light deflection element 406.
- the light emitted from the light source 401 is deflected by the optical deflector 402 as indicated by an arrow 410b in FIG. 4 and condensed at the position of the left eye 409b of the viewer 408.
- the image for the left eye is displayed on the liquid crystal panel 403 at the timing when the light is deflected toward the left eye 409b.
- the control unit 405 switches the light deflection angle by the optical deflector 402 in time series.
- the light emitted from the light source 401 is deflected by the light deflector 402 and is alternately condensed in time series on the position of the right eye 409a and the position of the left eye 409b of the viewer 408.
- An image for the right eye is displayed on the liquid crystal panel 403 at a timing when the light is deflected toward the right eye 409a
- an image for the left eye is displayed on the liquid crystal panel 403 at a timing when the light is deflected toward the left eye 409b.
- the viewer 408 can recognize the 3D image.
- the light source 401 is configured to repeatedly irradiate red laser light (wavelength 640 nm), green laser light (wavelength 532 nm), and blue laser light (450 nm) in order in time series.
- the deflection angle of the laser light of each color can be made the same. Accordingly, the laser beams of the respective colors are sequentially irradiated in the same direction in time series, and uniform white light without color misregistration can be irradiated.
- the liquid crystal display device can function as a 3D display.
- the right eye and the left eye of each of the detected plurality of viewers are condensed by deflecting light, and an appropriate image is displayed on the liquid crystal panel 403 at each timing.
- the liquid crystal display device 40 functions as a privacy display.
- the light source 401 can be configured by arranging a large number of white LEDs or the like, for example, or can be configured by arranging a large number of red LEDs, blue LEDs, and green LEDs in a planar shape. .
- the light source 401 can also be comprised by LED, CCFL (Cold Cathode Fluorescent Lamp; cold cathode fluorescent lamp), a laser, etc. which are arrange
- the angle magnifying lens 104 of the first embodiment can be disposed between the optical deflector 402 and the liquid crystal panel 403. Accordingly, even when the distance between the liquid crystal panel 403 and the viewer 408 is relatively short, light can be deflected, and the range (viewing angle) that can be viewed as a 3D display panel, a privacy display panel, or the like is widened. be able to.
- the position of the right eye 409a and the position of the left eye 409b of the viewer 408 is detected using the two cameras 404a and 404b.
- the position of the right eye 409a and the position of the left eye 409b is detected by other means.
- the eyes 409a and 409b of the viewer 408 can be photographed by the two cameras 404a and 404b, and the positions of the eyes 409a and 409b can be detected based on the difference between the images photographed by the cameras 404a and 404b.
- first to fourth embodiments of the present invention have been described above, the configurations shown in the first to fourth embodiments are merely examples, and various modifications can be made without departing from the spirit of the invention. Needless to say. Further, it is of course possible to use the above-described first to fourth embodiments in combination, or a combination of the inventions obtained by modifying them.
- the optical deflector of the present invention can be applied as an optical deflector that has a large light deflection angle and further reduces light loss caused by the generation of diffracted light. Further, the liquid crystal display device using the optical deflector of the present invention can be applied as a tablet-type 3D display panel, an installation-type 3D display panel, a privacy display panel, or the like.
- Optical deflector 40 Liquid crystal display devices 101a, 101b, 101c, 301a, 301b, 301c, 501, 501a, 501b, 501c Liquid crystal deflecting elements 102a, 102b, 102c, 302a, 302b, 302c, 503, 503a, 503b, 503c Liquid crystals 103a, 103b, 103c, 504, 504a, 504b, 504c Dielectric 104 Angular magnification lens 105 Concave lens 106 Convex lens 303 Light quantity restricting parts 304a, 304b, 304c Aperture restricting part 401 Light source 403 Liquid crystal panel 404a Right camera 404b Left camera 405 Control unit 406 Light deflection element 407 Pixel 407r Red sub pixel 407g Green sub pixel 407b Blue sub pixel 408 Viewer 409a Right eye 409b Left eye 502a, 502
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
Description
図1は、本発明の実施の形態1に係る光偏向器10を示す断面図である。図示の光偏向器10は、複数個(本実施の形態では3個)の液晶偏向素子101a,101b,101cを光の偏向方向(図1において左右方向)に並べて配置することにより構成されている。これら液晶偏向素子101a,101b,101cはそれぞれ、光偏向素子を構成する。
図2は、本発明の実施の形態2に係る光偏向器20を示す断面図である。図示の光偏向器20は、実施の形態1の複数の液晶偏向素子101a,101b,101cを光の入射側から光の出射側に向かう方向(図2において下側から上側に向かう方向)に複数層(本実施の形態では2層)積層することにより構成されている。上層の各液晶偏向素子101a,101b,101cの光の出射側にはそれぞれ、角度拡大レンズ104が配置されている。また、上層及び下層の液晶偏向素子101a,101b,101cの各液晶102a,102b,102cに対して電圧を印加するための一対の電極(図示せず)が設けられている。一対の電極は、上層及び下層の液晶偏向素子101a,101b,101cを挟んで相互に対向するように配置されている。
図3は、本発明の実施の形態3に係る光偏向器30を示す断面図である。図示の光偏向器30は、複数個(本実施の形態では3個)の液晶偏向素子301a,301b,301cを光の偏向方向(図3において左右方向)に並べて配置することにより構成されている。各液晶偏向素子301a,301b,301cは、断面矩形状の液晶302a,302b,302cで構成されている。光の偏向方向における各液晶偏向素子301a,301b,301cの大きさDは、略同一の大きさに構成されている。
図4は、実施の形態4に係る液晶表示装置40を示す図である。図示の液晶表示装置40は矩形状のフレーム(図示せず)を備え、このフレームには、光源401、光偏向器402、液晶パネル403、右側カメラ404a、左側カメラ404b及び制御部405が収容されている。本実施の形態の液晶表示装置40は、例えば、タブレット型の3Dディスプレイパネルで構成される。
40 液晶表示装置
101a,101b,101c,301a,301b,301c,501,501a,501b,501c 液晶偏向素子
102a,102b,102c,302a,302b,302c,503,503a,503b,503c 液晶
103a,103b,103c,504,504a,504b,504c 誘電体
104 角度拡大レンズ
105 凹レンズ
106 凸レンズ
303 光量制限部
304a,304b,304c 開口制限部
401 光源
403 液晶パネル
404a 右側カメラ
404b 左側カメラ
405 制御部
406 光偏向素子
407 画素
407r 赤サブ画素
407g 緑サブ画素
407b 青サブ画素
408 視認者
409a 右目
409b 左目
502a,502b,502c 電極
Claims (14)
- 光を所定の偏向方向に偏向させ且つ光の偏向角度を変調可能な光偏向器であって、
前記所定の偏向方向に並べて配置された複数の光偏向素子を備え、
少なくとも一組の隣接する一対の光偏向素子において、一方の光偏向素子の前記所定の偏向方向における大きさは、他方の光偏向素子の前記所定の偏向方向における大きさと異なる
光偏向器。 - さらに、前記複数の光偏向素子の光の出射側に設けられた角度拡大レンズを備え、
前記複数の光偏向素子より出射された光の偏向角度は、前記角度拡大レンズにより拡大される
請求項1に記載の光偏向器。 - 前記複数の光偏向素子は、光の入射側から光の出射側に向かう方向に複数層積層される
請求項1又は2に記載の光偏向器。 - 前記複数の光偏向素子の各々は液晶偏向素子であり、
前記複数の液晶偏向素子の各々に電圧を印加して前記複数の液晶偏向素子の各々の屈折率を変調することにより、前記複数の液晶偏向素子の各々に入射した光が屈折により偏向される
請求項1に記載の光偏向器。 - 光を回折により所定の偏向方向に偏向させ且つ光の偏向角度を変調可能な光偏向器であって、
前記所定の偏向方向に並べて配置された複数の液晶偏向素子を備え、
前記複数の液晶偏向素子の各々の前記所定の偏向方向における大きさは略同一の大きさであり、
前記複数の液晶偏向素子の各々に電圧を印加して前記複数の液晶偏向素子の各々の屈折率を変調することにより、前記複数の液晶偏向素子の各々に入射した光が回折により偏向される
光偏向器。 - 前記複数の液晶偏向素子の各々の、光が入射する開口部の前記所定の偏向方向における大きさは、50μm以下である
請求項5に記載の光偏向器。 - さらに、前記複数の液晶偏向素子の光の出射側に設けられた角度拡大レンズを備え、
前記複数の液晶偏向素子より出射された光の偏向角度は、前記角度拡大レンズにより拡大される
請求項5又は6に記載の光偏向器。 - 前記複数の液晶偏向素子は、光の入射側から光の出射側に向かう方向に複数層積層される
請求項5~7のいずれか1項に記載の光偏向器。 - 請求項1~8のいずれか1項に記載の光偏向器と、
前記光偏向器の光の入射側に設けられた光源と、
前記光偏向器の光の出射側に設けられた液晶パネルと、を備え、
前記光源より発した光は、前記光偏向器に入射されて前記光偏向器により偏向された後に、前記光偏向器より出射されて前記液晶パネルに入射される
液晶表示装置。 - 前記光源は、波長の異なる複数色の光を順に発するように構成され、
前記光源より発した前記波長の異なる複数色の光が前記光偏向器に順に入射された際に、前記波長の異なる複数色の光の偏向角度が同じになるように、入射する光の波長に応じて複数の光偏向素子の各々の屈折率又は複数の液晶偏向素子の各々の屈折率が変調される
請求項9に記載の液晶表示装置。 - 光を所定の偏向方向に偏向させる光偏向器と、
前記光偏向器の光の入射側に設けられ、前記光偏向器に向けて光を発する光源と、
前記光偏向器の光の出射側に設けられ、前記光偏向器により偏向された光が入射される液晶パネルと、を備え、
前記液晶パネルは、所定方向に並べて配置された複数の画素を有し、前記複数の画素の各々は複数のサブ画素で構成され、前記複数のサブ画素の配列方向は、前記所定の偏向方向に対して直交する
液晶表示装置。 - 光を所定の偏向方向に偏向させる光偏向器と、
前記光偏向器の光の入射側に設けられ、前記光偏向器に向けて光を発する光源と、
前記光偏向器の光の出射側に設けられ、前記光偏向器により偏向された光が入射される液晶パネルと、を備え、
前記光偏向器は、前記所定の偏向方向に並べて配置された複数の光偏向素子を有し、前記液晶パネルは、前記所定の偏向方向に並べて配置された複数の画素を有し、前記複数の画素の各々の前記所定の偏向方向における大きさは、前記複数の光偏向素子の各々の前記所定の偏向方向における大きさよりも大きい
液晶表示装置。 - 前記複数の画素の各々の前記所定の偏向方向における大きさは、前記複数の光偏向素子の各々の前記所定の偏向方向における大きさの整数倍である
請求項12に記載の液晶表示装置。 - さらに、前記液晶パネルを視認する視認者の右目及び左目の位置を検出する検出部と、前記検出部により検出された右目及び左目の位置に基づいて、前記光偏向器による光の偏向角度を制御する制御部と、を備え、
前記検出部により検出された右目及び左目の位置に対して、前記液晶パネルから出射された光が時系列で交互に集光されるように、前記制御部は、前記光偏向器による光の偏向角度を時系列で切り替える
請求項9~13のいずれか1項に記載の液晶表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11840731.1A EP2642335A4 (en) | 2010-11-17 | 2011-11-16 | OPTICAL DEFLECTOR AND LIQUID CRYSTAL DISPLAY |
US13/521,784 US9052565B2 (en) | 2010-11-17 | 2011-11-16 | Light deflector and liquid crystal display device using the same |
CN201180006216.3A CN102713732B (zh) | 2010-11-17 | 2011-11-16 | 光偏转器以及采用该光偏转器的液晶显示装置 |
JP2012517950A JP5887559B2 (ja) | 2010-11-17 | 2011-11-16 | 光偏向器及びこれを用いた液晶表示装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US41458010P | 2010-11-17 | 2010-11-17 | |
US61/414,580 | 2010-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012066776A1 true WO2012066776A1 (ja) | 2012-05-24 |
Family
ID=46083724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/006376 WO2012066776A1 (ja) | 2010-11-17 | 2011-11-16 | 光偏向器及びこれを用いた液晶表示装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9052565B2 (ja) |
EP (1) | EP2642335A4 (ja) |
JP (1) | JP5887559B2 (ja) |
CN (1) | CN102713732B (ja) |
WO (1) | WO2012066776A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170084951A (ko) * | 2016-01-13 | 2017-07-21 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
KR20180111736A (ko) * | 2018-09-28 | 2018-10-11 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
KR20190019993A (ko) * | 2019-02-19 | 2019-02-27 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10295833B2 (en) | 2010-12-15 | 2019-05-21 | SoliDDD Corp. | Resolution for autostereoscopic video displays |
KR101964066B1 (ko) * | 2012-10-02 | 2019-04-02 | 삼성디스플레이 주식회사 | 표시 장치 및 이를 이용한 입체 영상 표시 방법 |
US9823482B2 (en) | 2013-08-19 | 2017-11-21 | Universal Display Corporation | Autostereoscopic displays |
CN103777432B (zh) * | 2014-03-04 | 2016-10-05 | 上海交通大学 | 空间光调制器及其光场三维显示*** |
CN106716996A (zh) * | 2014-08-25 | 2017-05-24 | 索利Ddd股份有限公司 | 用于自由立体视频显示器的改进的分辨率 |
CN104267535B (zh) * | 2014-10-30 | 2017-03-22 | 京东方科技集团股份有限公司 | 一种光偏转装置、方法和显示装置 |
KR20210117069A (ko) | 2020-03-18 | 2021-09-28 | 삼성전자주식회사 | 빔 편향기, 이를 포함하는 3차원 디스플레이 장치, 및 빔 편향 방법 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000507005A (ja) * | 1997-01-09 | 2000-06-06 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 偏向素子 |
JP2003066405A (ja) * | 2001-08-28 | 2003-03-05 | Ricoh Co Ltd | 光路偏向素子、画像表示装置および光路偏向素子の制御方法 |
JP2004325494A (ja) * | 2003-04-21 | 2004-11-18 | Ricoh Co Ltd | 立体画像表示方法および装置 |
WO2005069918A2 (en) | 2004-01-22 | 2005-08-04 | Vescent Photonics, Inc. | Tunable laser having liquid crystal waveguide |
JP2007199445A (ja) * | 2006-01-27 | 2007-08-09 | Epson Imaging Devices Corp | 液晶表示装置および電子機器 |
JP2008134652A (ja) * | 2002-01-31 | 2008-06-12 | Citizen Holdings Co Ltd | 光偏向装置 |
JP2009026641A (ja) * | 2007-07-20 | 2009-02-05 | Stanley Electric Co Ltd | 光照射装置 |
JP2009053345A (ja) * | 2007-08-24 | 2009-03-12 | Toshiba Corp | 指向性バックライト、表示装置及び立体画像表示装置 |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2713890A1 (de) * | 1976-03-30 | 1977-10-06 | Canon Kk | Optisches abtastsystem mit einem optischen system zur ausbildung von halbtonbildern |
JPS5596475A (en) * | 1979-01-19 | 1980-07-22 | Nissan Motor Co Ltd | Obstacle detector for vehicle |
US4842396A (en) * | 1984-06-29 | 1989-06-27 | Canon Kabushiki Kaisha | Light modulation element and light modulation apparatus |
US4897715A (en) * | 1988-10-31 | 1990-01-30 | General Electric Company | Helmet display |
US5945967A (en) * | 1995-01-18 | 1999-08-31 | I-O Display Systems, Llc | Speckle depixelator |
US6002207A (en) * | 1995-08-25 | 1999-12-14 | International Business Machines Corporation | Electron source with light shutter device |
JPH09277069A (ja) * | 1996-04-12 | 1997-10-28 | Komatsu Ltd | 液晶マスク、液晶式レーザマーカ及びそれを用いた刻印方法 |
HUP9700348A1 (hu) * | 1997-02-04 | 1998-12-28 | Holografika E.C. | Eljárás és berendezés háromdimenziós kép megjelenítésére |
US7057700B2 (en) * | 2001-01-23 | 2006-06-06 | Ricoh Company, Ltd. | Light deflection element, light deflection device and image display device |
JP4084203B2 (ja) | 2002-01-31 | 2008-04-30 | シチズンホールディングス株式会社 | 光偏向装置 |
JP3600228B2 (ja) * | 2002-03-01 | 2004-12-15 | 株式会社リコー | 光走査装置および画像形成装置 |
JP4338434B2 (ja) * | 2002-06-07 | 2009-10-07 | 富士フイルム株式会社 | 透過型2次元光変調素子及びそれを用いた露光装置 |
JP2004070090A (ja) * | 2002-08-07 | 2004-03-04 | Ricoh Co Ltd | マルチビーム光走査装置および画像形成装置 |
TWI227808B (en) * | 2002-12-02 | 2005-02-11 | Sony Corp | 3-D image display unit |
US7245430B2 (en) | 2003-04-21 | 2007-07-17 | Ricoh Company, Ltd. | Method and apparatus for displaying three-dimensional stereo image using light deflector |
US20050271325A1 (en) | 2004-01-22 | 2005-12-08 | Anderson Michael H | Liquid crystal waveguide having refractive shapes for dynamically controlling light |
JP2006184447A (ja) * | 2004-12-27 | 2006-07-13 | Nikon Corp | 三次元映像表示装置 |
US20060238545A1 (en) * | 2005-02-17 | 2006-10-26 | Bakin Dmitry V | High-resolution autostereoscopic display and method for displaying three-dimensional images |
TW200732596A (en) * | 2005-10-28 | 2007-09-01 | Takiron Co | Field luminescence equipment and method for emitting in the field luminescence equipment |
JP2008096904A (ja) * | 2006-10-16 | 2008-04-24 | Dainippon Printing Co Ltd | 面光源装置、透過型表示装置 |
AU2008205373B2 (en) * | 2007-01-10 | 2011-09-15 | Xtreme Energetics, Inc. | Non-imaging facet based optics |
JP2008309900A (ja) * | 2007-06-12 | 2008-12-25 | Olympus Corp | 液晶光学素子、液晶光学素子を備えた光学系、液晶光学素子を備えた光学系を備えた画像取得装置 |
JP5223452B2 (ja) * | 2008-05-20 | 2013-06-26 | 株式会社リコー | プロジェクタ及び投影画像形成方法及び車両用ヘッドアップディスプレイ装置 |
TWI391707B (zh) * | 2008-10-30 | 2013-04-01 | Ind Tech Res Inst | 複合式分光元件 |
TWI424200B (zh) * | 2008-12-31 | 2014-01-21 | Ind Tech Res Inst | 色彩分離光學元件以及所應用的影像裝置 |
JP2010156906A (ja) * | 2009-01-05 | 2010-07-15 | Citizen Holdings Co Ltd | 液晶光学素子および光ピックアップ装置 |
JP2010211036A (ja) * | 2009-03-11 | 2010-09-24 | Sony Corp | 立体表示装置 |
JP2010256684A (ja) * | 2009-04-27 | 2010-11-11 | Toppan Printing Co Ltd | 露光装置、及びカラーフィルタの製造方法、カラーフィルタ |
US9201187B2 (en) * | 2010-11-17 | 2015-12-01 | Panasonic Intellectual Property Management Co., Ltd. | Light-emitting device, and liquid crystal display device and image display device that use the same |
-
2011
- 2011-11-16 CN CN201180006216.3A patent/CN102713732B/zh not_active Expired - Fee Related
- 2011-11-16 EP EP11840731.1A patent/EP2642335A4/en not_active Withdrawn
- 2011-11-16 US US13/521,784 patent/US9052565B2/en not_active Expired - Fee Related
- 2011-11-16 WO PCT/JP2011/006376 patent/WO2012066776A1/ja active Application Filing
- 2011-11-16 JP JP2012517950A patent/JP5887559B2/ja not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000507005A (ja) * | 1997-01-09 | 2000-06-06 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 偏向素子 |
JP2003066405A (ja) * | 2001-08-28 | 2003-03-05 | Ricoh Co Ltd | 光路偏向素子、画像表示装置および光路偏向素子の制御方法 |
JP2008134652A (ja) * | 2002-01-31 | 2008-06-12 | Citizen Holdings Co Ltd | 光偏向装置 |
JP2004325494A (ja) * | 2003-04-21 | 2004-11-18 | Ricoh Co Ltd | 立体画像表示方法および装置 |
WO2005069918A2 (en) | 2004-01-22 | 2005-08-04 | Vescent Photonics, Inc. | Tunable laser having liquid crystal waveguide |
JP2007199445A (ja) * | 2006-01-27 | 2007-08-09 | Epson Imaging Devices Corp | 液晶表示装置および電子機器 |
JP2009026641A (ja) * | 2007-07-20 | 2009-02-05 | Stanley Electric Co Ltd | 光照射装置 |
JP2009053345A (ja) * | 2007-08-24 | 2009-03-12 | Toshiba Corp | 指向性バックライト、表示装置及び立体画像表示装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2642335A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170084951A (ko) * | 2016-01-13 | 2017-07-21 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
US10210823B2 (en) | 2016-01-13 | 2019-02-19 | Samsung Electronics Co., Ltd. | Light deflector and display apparatus |
US10490140B2 (en) | 2016-01-13 | 2019-11-26 | Samsung Electronics Co., Ltd. | Light deflector and display apparatus |
KR20180111736A (ko) * | 2018-09-28 | 2018-10-11 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
KR101955333B1 (ko) | 2018-09-28 | 2019-03-07 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
KR20190019993A (ko) * | 2019-02-19 | 2019-02-27 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
KR101969854B1 (ko) * | 2019-02-19 | 2019-04-17 | 삼성전자주식회사 | 광 편향기 및 디스플레이 장치 |
Also Published As
Publication number | Publication date |
---|---|
EP2642335A1 (en) | 2013-09-25 |
US9052565B2 (en) | 2015-06-09 |
EP2642335A4 (en) | 2013-11-20 |
CN102713732B (zh) | 2016-01-20 |
JP5887559B2 (ja) | 2016-03-16 |
US20130093663A1 (en) | 2013-04-18 |
JPWO2012066776A1 (ja) | 2014-05-12 |
CN102713732A (zh) | 2012-10-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5887559B2 (ja) | 光偏向器及びこれを用いた液晶表示装置 | |
EP3136159B1 (en) | Backlight unit and 3d image display apparatus | |
US9400347B2 (en) | Display device | |
US8714804B2 (en) | Backlight assembly and display apparatus having the same | |
US7969532B2 (en) | Surface illuminator and liquid crystal display using same | |
US10698149B2 (en) | Display for two-dimensional and/or three-dimensional images | |
US8643928B2 (en) | Illumination systems for visual displays | |
US11243426B2 (en) | Display device, display method, and color separation device | |
JP5191996B2 (ja) | 面状照明装置およびそれを用いた液晶表示装置 | |
US7869109B2 (en) | Portable projector | |
WO2012066778A1 (ja) | 光照射装置及びこれを用いた液晶表示装置並びに画像表示装置 | |
US8891052B2 (en) | Liquid crystal display device comprising first and second optical deflectors wherein each of the first and second optical deflectors includes a plurality of liquid crystal deflection elements | |
WO2017173810A1 (zh) | 显示装置、裸眼3d显示***和虚拟现实眼镜 | |
JP2010078795A (ja) | 液晶表示装置 | |
US8029141B2 (en) | Image display apparatus that controls luminance of a partial area of each pixel to be below threefold of an average luminance value of the entire pixel | |
EP3374692B1 (en) | Wide angle imaging directional backlights | |
TWI494662B (zh) | Surface light source device and liquid crystal display device | |
US11829060B2 (en) | Illumination device for a display having a plate shaped optical unit with transmissive and reflective sections where light beams from mutually different directions are incident thereon | |
US10871656B2 (en) | Beam diameter expanding device and display device | |
JP2010067552A (ja) | バックライト装置および液晶ディスプレイ装置 | |
CN110581984A (zh) | 投影设备 | |
WO2009122939A1 (ja) | 光スイッチ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180006216.3 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012517950 Country of ref document: JP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11840731 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13521784 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011840731 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112012017308 Country of ref document: BR |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 112012017308 Country of ref document: BR Kind code of ref document: A2 Effective date: 20120712 |