WO2015146072A1 - プロジェクター - Google Patents
プロジェクター Download PDFInfo
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- WO2015146072A1 WO2015146072A1 PCT/JP2015/001483 JP2015001483W WO2015146072A1 WO 2015146072 A1 WO2015146072 A1 WO 2015146072A1 JP 2015001483 W JP2015001483 W JP 2015001483W WO 2015146072 A1 WO2015146072 A1 WO 2015146072A1
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- light
- component
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- projection
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2046—Positional adjustment of light sources
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
- G03B17/54—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with projector
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/147—Optical correction of image distortions, e.g. keystone
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
- H04N13/32—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using arrays of controllable light sources; using moving apertures or moving light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/363—Image reproducers using image projection screens
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/317—Convergence or focusing systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/606—Projection screens characterised by the nature of the surface for relief projection
Definitions
- the present invention relates to a projector capable of projecting simultaneously at different positions in the depth direction.
- the focused surface is a substantially flat surface and can only be adjusted by moving the surface back and forth. In other words, it is not possible to change the focal position and project onto a projected area with different depths in parallel.For example, to project onto a curved screen with focus, or to change the shape of such a curved screen. There was no projector that could handle it.
- Patent Document a technology capable of acquiring information on the incident direction of light incident on a two-dimensional sensor and simultaneously photographing subjects at different distances in the depth direction as an imaging device.
- the present invention has been made in view of the background art described above, and an object of the present invention is to provide a projector capable of performing projection on a projection area having a depth.
- a projector includes a light emission adjustment mechanism that enables adjustment of an emission angle used for each component light emitted from a plurality of positions in a light emitting unit, and a light The emission position and emission of the component light emitted from the light emission adjustment mechanism corresponding to the projection area that is within the irradiated area irradiated by the component light that has passed through the emission adjustment mechanism and includes different positions in the depth direction.
- a light control unit for controlling the angle.
- the emission position and the emission angle of each component light constituting the image light emitted from the light emission adjusting mechanism are adjusted by the control of the light control unit.
- image projection can be performed by changing the focal position of a projection region having a depth, that is, a projection region having regions at different distances in the depth direction.
- a projection optical system that projects component light that has passed through the light emission adjustment mechanism onto a projection region is further provided.
- the light emission adjusting mechanism includes a light selection unit that selects, for each component light emitted from the light emitting unit, a component at an emission angle that is used by limiting light transmission.
- the emission angle of each component light can be adjusted by the light selector.
- the light selection unit is a panel type member that switches between blocking and transmitting light
- the light control unit controls switching between blocking and transmitting light in the panel type member, Of the component light emitted from the light emitting unit, the component at a predetermined emission angle is selected.
- the selection pattern of the emission angle of each component light can be increased by controlling the switching between light blocking and transmission to limit the light transmission.
- the light emitting unit in the light emission adjusting mechanism, includes a light emission source having a planar spread, and the emitted component light is projected to a projection region having a two-dimensional or three-dimensional spread. It is irradiated simultaneously. In this case, it is possible to project an image on the projection area simultaneously in a plane or in a spatial manner without requiring an operation such as optical scanning, for example, by the light emitting portion having a planar shape.
- the light emitting unit has a plurality of self-emitting elements that respectively emit component light from a plurality of light emitting points arranged in a planar shape.
- an image can be formed by a plurality of self-luminous elements.
- the self-luminous element generates coherent light. In this case, it is possible to easily and accurately adjust the emission angle of the component light, and to use light with high efficiency.
- the light emission adjusting mechanism has a plurality of lens portions that are respectively provided corresponding to the plurality of light emitting points in the light emitting portion and adjust the emission angle of light emitted from each light emitting point. .
- the emission angle can be adjusted for each component light by the plurality of lens units.
- the light emitting unit includes an illumination optical system that forms illumination light from light source light generated by the light source unit, and a light modulation unit that modulates illumination light from the illumination optical system.
- the illumination light from the illumination optical system can be emitted as component light of image light from a plurality of positions in the light modulator.
- the light emission adjusting mechanism includes a panel-type member that switches between blocking and transmitting light as a light selection unit that selects a component at an emission angle from component light emitted from the light emitting unit.
- the panel-type member is configured to associate a plurality of pixels with each pixel constituting the light modulation unit. In this case, by switching between a plurality of pixels on the panel-type member side corresponding to one pixel among the pixels constituting the light modulation unit and selecting light blocking and transmission, the pixel from the light modulation unit side can be selected. With respect to the emitted component light, a component having a desired emission angle can be selected when the component light has an angular distribution.
- the light emission adjusting mechanism adjusts an angle component to be used for each component light of each color by forming component light for each color according to the light of each color in the light emitting unit.
- a synthesis optical system for synthesizing the component lights of the respective colors that have passed through the light emission adjustment mechanism is further provided. In this case, a color image can be projected.
- FIG. 5 It is a figure explaining the projector of 1st Embodiment. It is a figure explaining the structure of a projector.
- A is a figure which shows an example about the structure of a light emission part
- B is a figure which shows another example about the structure of a light emission part.
- A is a figure which shows an example of the projection by a projector
- B is a figure which shows another example of the projection by a projector.
- A) is a figure which shows an example of the image projection to two area
- (B) is a front view which shows notionally the two area
- 6 is a flowchart for explaining the operation of image projection in FIG. 5.
- FIG. 1 It is a figure which shows an example of the projection to the non-plane by a projector.
- A is a perspective view which shows an example of the projection to the three-dimensional area
- (B) is a side view of (A). It is a figure explaining the projector of 2nd Embodiment.
- A is a diagram conceptually showing a part of the structure of the projector, and
- B) is a diagram for explaining the structure of a projector according to a modification.
- (A) is a figure explaining the emission angle adjustment in the projector of one modification
- (B) is a figure shown about the projector of another modification. It is a figure explaining the projector of 3rd Embodiment. It is a figure for demonstrating the projector of another modification.
- the projector 2 As shown in FIGS. 1 and 2, the projector 2 according to the first embodiment of the present invention includes an optical system portion 50 that projects image light, and a projectable irradiation in the projection of image light by the optical system portion 50.
- An image capturing unit 70 for capturing an image of the projection region PD in the region and acquiring information regarding the distance, and a circuit device 80 for controlling the operation of the optical system portion 50 are provided.
- the optical system portion 50 includes a light emission adjusting mechanism 100 and a projection optical system 40.
- the light emission adjusting mechanism 100 includes a light emitting unit 10 and a light selecting unit 20.
- a plurality of light emitting units 10 are arranged in a matrix in the plane of the emission surface SA parallel to the XY plane perpendicular to the optical axis OA.
- the self-luminous element 10a is disposed.
- the light emitting section 10 emits light having a spread in a planar shape by emitting each component light IL to be image light by a plurality of self-luminous elements 10a arranged in a planar shape as a plurality of light emitting points. It is a light emission source to be generated.
- the light selection unit 20 is a member that enables selection of the component light IL emitted from each of the light emitting elements 10a arranged at a plurality of positions in the light emitting unit 10.
- the light selection unit 20 is a member that determines blocking and transmission of the component light IL.
- the light selection unit 20 restricts transmission of the component light IL emitted from each self-luminous element 10a. It can be said that it is a thing.
- the multiple light-emitting elements 10a constituting the light emitting unit 10 can emit component light IL in different directions or angles, respectively.
- the component lights IL respectively emitted from the self-luminous elements 10a at different positions can be superimposed at the same point (position) on the projection region PD.
- the amount of light can be improved by increasing the number of lights collected at the same point.
- the number of pixels of the image formed on the projection area PD decreases. Will be set.
- each self-luminous element 10a is configured by a laser light-emitting element.
- each self-luminous element 10a is composed of a laser light emitting element LD that emits laser light as the component light IL, and a mirror (not shown) having an appropriate angle is provided at the tip of the laser light emitting element LD.
- the laser beam that is the component light IL can be emitted at an angle or a direction. In this way, by making each self-luminous element 10a generate laser light, that is, coherent light, adjustment of the emission angle of the component light IL can be easily and accurately performed, and light can be used with high efficiency.
- each self-luminous element 10a is configured by an LED light source.
- each self-luminous element 10a is constituted by an LED package protected by covering the LED light emitting element LE that emits LED light as the component light IL with a cap member (lens member) CP having a lens function, and the cap member CP is a component.
- the emission angle or direction of the component light IL can be appropriately adjusted.
- a large number of self-luminous elements 10a can emit component light IL in different directions.
- 3A and 3B are examples of the self-luminous element 10a, and the self-luminous element 10a can be configured by other structures.
- a high-pressure mercury lamp or the like can be used as an illumination system instead of the LED shown in FIG. If the emission angle of the emitted component light IL has a distribution, that is, has a spread, the width (size and size) of the light transmission part QA and the light shielding part QB of the light selection part 20 described later in detail. Range) and position can be adjusted. Thereby, the emission angle of the component light to be used can be regulated to a desired state.
- the light selection unit 20 includes a plurality of slit-like or lattice-like light transmission parts QA and light shielding parts QB provided corresponding to the respective self-luminous elements 10a of the light emitting part 10 that emit the component light IL as described above. Are arranged alternately. That is, the light selection unit 20 transmits the component light IL to be used in the light transmission unit QA, while blocking other components by the light shielding unit QB, thereby restricting light transmission. More specifically, the light transmitting portion QA and the light shielding portion QB are formed by forming, for example, a portion having a hole and a portion having no hole (portion closing the hole) in a grid-like member.
- the position of the shielding part QB is fixedly determined.
- a configuration such as a parallax barrier can be considered.
- the light selection unit 20 is, for example, a panel-type member that switches between blocking and transmitting light, thereby providing a valve function, and the positions of the light transmitting unit QA and the light blocking unit QB are variable. It is also possible. By making variable control by switching between light blocking and transmission, the selection pattern of the emission angle of each component light can be increased.
- the width (size and range) of the light transmitting part QA and the light shielding part QB can be various, for example, can be adapted to the size and arrangement of the self-emitting elements 10a.
- the light selection unit 20 includes the light transmission unit QA and the light shielding unit QB, so that only the component at the emission angle to be used among the component light IL is allowed to pass and other components are excluded. Can do.
- the light selection unit 20 can provide directivity by limiting the angular spread of each component light IL. For example, a configuration like a lenticular lens is conceivable.
- the light selector 20 is a member that determines whether to use the component light IL as image light according to the emission angle.
- the light emission adjusting mechanism 100 enables the light emitting unit 10 and the light selecting unit 20 to adjust the light emission position of each component light IL constituting the image light and the emission angle to be used. It has become. That is, the light emission adjusting mechanism 100 is a light setting unit that sets the image light emission state on the light source side under the control of the circuit device 80.
- the utilization efficiency is improved by adjusting the positional relationship between the light emission position of the light emission unit 10 and the light selection unit 20 and the light transmission unit QA by the control in the circuit device 80. Thus, it is possible to further increase the amount of light.
- the projection optical system 40 projects the component light IL that has passed through the light emission adjusting mechanism 100 as described above, that is, the light selection unit 20, and projects the entire component light IL as image light onto the projection region PD. It is. Of each component light IL that has passed through the projection optical system 40, a certain component overlaps with another component light IL on the projection region PD as shown in the figure. For example, as shown by a solid line in the figure, among the self-luminous elements 10a, the fourth self-luminous element a4 (10a) from the top in the drawing and the fifth self-luminous element a5 (10a) adjacent thereto are shown. Are emitted at mutually different angles, but finally reach the same position PA1 on the projection area PD.
- the component light ILa (IL) from the self-luminous element a4 and the component light ILb (IL) from the self-luminous element a5 are superposed at the position PA1 on the projection area PD to form one projection pixel as a projection image. Is forming.
- the component lights IL shown by broken lines in the figure overlap each other at a position PA2 on the projection area PD to form one projection pixel, and the component lights IL shown by a one-dot chain line in the figure show one projection pixel at a position PA3. Is forming.
- the component light IL from the large number of self-luminous elements 10a arranged in a plane in the light emitting unit 10 is simultaneously emitted toward the projection region PD, so that an image is displayed on the surface region of the projection region PD.
- the projection optical system 40 also functions as a unit that projects onto the projection region PD while converging the light beam of each component IL, for example, when the beam bundle has an angular spread.
- the imaging unit 70 is configured by, for example, a camera capable of measuring a distance image.
- the imaging unit 70 images the projection area PD in the irradiated area onto which the image light from the optical system portion 50 is projected, and the projector 2
- the distance of the projection area PD with respect to and the shape of the projection area PD that is, the distance to each small area and each point on the projection area PD is measured. That is, the projector 2 has the imaging unit 70 to acquire depth information (information about the Z direction) of the projection area PD with respect to the projector 2 and information about the orientation of each small area (each point) on the projection area PD. be able to.
- the projection area PD is a plane perpendicular to the optical axis OA. In this case, it is sufficient if the distance information (depth information) of the projection area PD on the optical axis OA is acquired.
- the circuit device 80 includes an image processing unit 81, a light emission driving unit 82, and a main control unit 88, and controls the entire operation of the projector 2 including operation control of the optical system portion 50.
- the main control unit 88 controls the entire operation.
- the image processing unit 81 performs processing of image information to be projected, and particularly in the present embodiment, the image processing unit 81 acquires distance information such as the shape of the projection region PD acquired from the imaging unit 70, and based on the distance information. Image processing.
- the light emission drive unit 82 controls the operation of the light emission unit 10 and the light selection unit 20 constituting the light emission adjustment mechanism 100 in accordance with instructions from the main control unit 88 and the image processing unit 81.
- the lighting timing of each self-light emitting element 10a constituting the light emitting unit 10 and the control of the amount of lighting, and the drive operation for switching the arrangement of a number of slit-like light transmitting parts QA and light shielding parts QB in the light selecting part 20 are performed.
- the circuit device 80 functions as a light control unit that controls the emission position and the emission angle of the component light IL with respect to the operation control of the light emission adjusting mechanism 100 among the various operation controls of the projector 2.
- the image forming position can be changed as appropriate by controlling the light emission adjusting mechanism 100 having the function of selecting the component light IL with the circuit device 80.
- the projection area PD at a different distance is focused regardless of the focus function of the projection optical system 40.
- Image can be formed.
- the focal position can be changed according to the shape of the projection area PD and the like.
- FIG. 4A shows that the projection area PD is a plane perpendicular to the optical axis OA and the distance from the projector 2 is compared in the depth direction (Z direction).
- FIG. 4B shows a case where the projection area PD is a plane perpendicular to the optical axis OA and is positioned relatively close to the depth direction (Z direction).
- the projection area PD is a plane perpendicular to the optical axis OA and is positioned relatively close to the depth direction (Z direction).
- the distance information about the projection region PD from the imaging unit 70 is acquired, and the emission of light according to the image information corrected based on the distance information.
- the circuit device 80 controls the light emission adjusting mechanism 100 so as to perform the above.
- the component light IL indicated by the solid line is a corresponding light beam at a position PA1 located on the lower side of the projection position on the projection area PD, for example. Yes.
- the self-light-emitting element a4 and the self-light-emitting element a5 among the self-light-emitting elements 10a constituting the light-emitting unit 10 are converted into an image (pixel) on the position PA1. It corresponds.
- the circuit device 80 associates the component light IL (broken line in the figure) from the other self-luminous element 10a with the position PA2 located on the center side among the projection positions on the projection area PD, thereby projecting the projection area.
- the light emission adjusting mechanism 100 is controlled so that the component light IL (an alternate long and short dash line in the figure) from the other self-light emitting element 10a corresponds to the position PA3 located on the upper side of the projection position on the PD. ing.
- the three positions PA1 to PA3 have been described for the sake of simplification.
- image projection is performed on the entire projection area PD, and a projection image is formed.
- the component light IL from two light emitting points is superimposed on one position on one projection region PD, but this is not limitative.
- component light IL from three or more light emitting points may be superimposed on one position on the projection region PD.
- the degree of superimposition is appropriately changed depending on the relationship between the number of light emitting points (the number of self-emitting elements 10a) and the required resolution.
- the circuit device 80 is configured so that the relationship between each position on the projection region PD and the self-emitting element 10a associated with the light emission adjusting mechanism 100 is different from that in the case shown in FIG.
- the injection adjustment mechanism 100 is controlled.
- the component light IL from the second self-luminous element a2 (10a) from the top in FIG. is associated with component light IL (solid line in the figure) from the seventh self-luminous element a7 (10a) from the top.
- the component light IL (broken line in the figure) from the other self-luminous element 10a is made to correspond to the position PB2 located on the center side among the projection positions on the projection area PD, and on the projection area PD.
- the position PB3 positioned on the upper side is made to correspond to the component light IL (the alternate long and short dash line in the figure) from another self-luminous element 10a as indicated by the alternate long and short dash line.
- the projector 2 can change the position of the projection region PD in the irradiated region as in the case of FIG. 4A and the case of FIG. 4B.
- the image light is controlled so as to select the component light IL at the emission position and the emission angle that can be dealt with, so that the same image is in focus without using the focus function of the projection optical system 40 Can be formed.
- the focal position of the image light emitted from the projector 2 can be changed according to the projection area PD independently of the focus function according to the position of the projection area PD.
- FIGS. 5A and 5B are diagrams illustrating an example of image projection onto a divided area using the projector 2.
- the two regions (divided regions) of the first region PD1 and the second region PD2 in which the projection regions PD include different positions in the depth direction are included.
- the far side of the position in the depth direction is the first region PD1
- the near side is the second region PD2.
- both the first region PD1 and the second region PD2 are planes parallel to the XY plane perpendicular to the optical axis OA.
- the projector 2 determines the projection range of each self-luminous element 10a based on the distance information between the first area PD1 and the second area PD2 acquired from the imaging unit 70.
- the light emission adjusting mechanism 100 By controlling the operation of the light emission adjusting mechanism 100 so as to be divided into those for the first area PD1 and those for the second area PD2, it is possible to form an image on both the first area PD1 and the second area PD2. ing.
- the component light IL from a large number of self-luminous elements 10a arranged in a planar shape in the light emitting unit 10 is emitted all at once, so that the surface of the projection region PD composed of a plurality of divided regions. An image is formed over the entire area.
- the range that can be projected within the plane including the first area PD1 in the projector 2 is set as the projectable area PP1, and the range that can be projected within the plane including the second area PD2 is projected.
- the projectable region PP1 is a virtual image light irradiated region, and it is assumed that all the self-light emitting elements 10a in the light emitting unit 10 are projected only within a plane including the first region PD1. It shows the range that can be irradiated.
- the projectable region PP2 indicates a range that can be irradiated when all the self-luminous elements 10a in the light emitting unit 10 are projected only within a plane including the second region PD2.
- the component light IL of the emission position and the emission angle that is condensed in the first region PD1 among the self-luminous elements 10a of the light emitting unit 10 is emitted. It is sufficient to select the self-luminous element 10a and the like so as to use only those that emit light.
- the light emitting element 10a that emits the component light IL having the emission position and the emission angle that is condensed on the second region PD2.
- the self-luminous element 10a and the like may be selected so that only the light source is used. That is, in the circuit device 80, light distribution control in the light emission adjusting mechanism 100 may be appropriately performed.
- the component light IL emitted from the light emission adjusting mechanism 100 toward the first region PD1 and the component light IL emitted toward the second region PD2 are generated.
- the image formation as described above is performed. That is, the projector 2 can simultaneously project onto a plurality of projection surfaces.
- the distance image data is fetched from the outside under the control of the main controller 88 (step S11).
- the main control unit 88 operates the imaging unit 70 to image the projection area PD to acquire information about the distance, and relates to the position of the projection area PD, that is, the positions of the first area PD1 and the second area PD2. Information is taken in (step S12). More specifically, the main control unit 88 operates the distance image generation unit 81a (see FIG. 2) built in the image processing unit 81, and based on the information acquired from the imaging unit 70, each of the projection regions PD. For the first area PD1 and the second area PD2 which are the divided areas, data relating to the distance to the projector 2 and the direction are respectively extracted.
- the main control unit 88 extracts the self-luminous element 10a that emits the component light IL that can be condensed on each of the regions PD1 and PD2 from the data regarding the distance and orientation acquired in step S12, and first The component light IL1 projected onto the region PD1 and the component light IL2 projected onto the second region PD2 are sorted (see FIG. 5A), and the process of assigning each self-emitting element 10a is performed (see FIG. 5A). Step S13).
- the main control unit 88 performs image data correction processing based on the image data acquired in step S11 and the assignment of the self-luminous element 10a in step S13 (step S14). That is, the correspondence between each image data and each self-luminous element 10a that emits component light that forms a projection image corresponding to the image data is determined.
- the main control unit 88 transmits an image signal based on the correspondence in step S14 to the light emission driving unit 82 (step S15), and an image projection operation is started based on the drive signal from the light emission driving unit 82. Is done.
- image projection is performed simultaneously on both the first region PD1 and the second region PD2, but for example, the projection on the first region PD1 and the projection on the second region PD2 are: It can also be performed in a time division manner. For example, in the case where control is performed such that a certain self-luminous element 10a among the plural self-luminous elements 10a is used for both the projection with respect to the first area PD1 and the projection with respect to the second area PD2, time division is performed. The purpose can be achieved by switching the projection.
- each region is assumed to be a plane, but an image can be formed even on a surface having a curvature that is not a plane.
- a projection region PD having a two-dimensional or three-dimensional expansion is formed by connecting a large number of minute curved surfaces, the self-luminous elements 10a corresponding to the minute curved surfaces are simultaneously irradiated. It is also possible to do. In this case, for example, as shown in FIG. 7, image projection can be performed on a projection region PD having a three-dimensional curved surface shape.
- FIGS. 8A and 8B are diagrams illustrating an example of a state of projection onto a three-dimensional area. That is, in the projector 2, when a spatial (stereoscopic) region (irradiated region) in which image light can be projected by the light emission adjusting mechanism 100 is set as the projectable region PX, the projection region PD is free in the projectable region PX. It can be set to. In the illustrated case, as an example, the case where the projection region PD is hemispherical is shown.
- the projector 2 uses the emission angle to be used for each component light IL for each of the component lights IL emitted from the self-luminous elements 10a arranged at a plurality of positions in the light emitting unit 10.
- the emission position of the component light IL emitted from the light emission adjustment mechanism 100 and the light emission adjustment mechanism 100 to be adjusted (set) and the projection area PD irradiated by the component light IL that has passed through the light emission adjustment mechanism 100
- a circuit device 80 that is a light control unit that controls the emission angle.
- the light emission adjusting mechanism 100 emits each component light constituting the image light from a plurality of positions at different angles, so that the irradiated region, that is, the projection region is Even when there is a depth, that is, when there are areas at different distances in the depth direction, it is possible to project the projection area simultaneously in parallel. In other words, it is possible to project into different depth spaces in parallel.
- the projector 2 can form an image at an arbitrary position, for example, when projecting onto a three-dimensional object such as projection mapping, a single projector 2 is used which is necessary for a conventional projector. Can be realized. Further, the projector 2 can change the light beam condensing density depending on the position, so that only a certain portion of the image is particularly brightened. For example, since only a part of the image can be illuminated, it is possible to express a metallic luster or the like. Furthermore, it becomes possible to reduce the cost because the focus adjustment mechanism is unnecessary, and it is possible to improve the focus feeling in projection mapping onto a three-dimensional object or the like.
- the projector according to the second embodiment will be described below.
- the projector according to the second embodiment is a modification of the projector according to the first embodiment, and portions not specifically described have the same structure as the projector according to the first embodiment.
- the projector 202 of the second embodiment is a single-plate projector, and as the light emission adjustment mechanism 200, a light source unit that generates light source light and an illumination optical system that forms illumination light from the light source unit.
- a light modulation unit 25 that is illuminated by illumination light emitted from the light source device 21, and a light selection unit that selects component light that constitutes image light of each color emitted from the light modulation unit 25 220.
- the projector 202 includes a projection optical system 40 that projects the image light whose component light is selected by the light selection unit 220 onto the projection region PD.
- the light source device 21 includes a light source lamp 21a, a concave lens 21b, a pair of lens arrays 21d and 21e, a polarization conversion member 21g, and a superimposing lens 21i.
- the light source lamp 21a which is a light source unit that generates light source light, includes a lamp body 22a such as a high-pressure mercury lamp, and a concave mirror 22b that collects the light source light and emits it forward.
- the concave lens 21b has a role of collimating the light source light from the light source lamp 21a.
- the concave mirror 22b is a parabolic mirror, it can be omitted.
- the pair of lens arrays 21d and 21e constituting the illumination optical system is composed of a plurality of element lenses arranged in a matrix, and separates the light source light from the light source lamp 21a that has passed through the concave lens 21b by these element lenses. Concentrate and diverge.
- the polarization conversion member 21g includes a prism array in which a PBS and a mirror are incorporated, and a wave plate array that is attached in a stripe shape on an exit surface provided in the prism array.
- the superimposing lens 21i enables superimposing illumination on the liquid crystal light valve provided as the light modulation unit 25 by appropriately converging the illumination light that has passed through the polarization conversion member 21g as a whole. That is, the illumination light that has passed through both the lens arrays 21 d and 21 e and the superimposing lens 21 i uniformly illuminates the liquid crystal panel 26 provided in the light modulation unit 25.
- the light modulator 25 is a liquid crystal light valve as described above. More specifically, the light modulation unit 25 includes a liquid crystal panel 26 that is a liquid crystal element, a light incident side polarizing plate 25e, and a light emitting side polarizing plate 25h, and constitutes a spatial distribution of the intensity of incident illumination light. This is a non-light-emitting light modulation device that modulates in units of pixels. A field lens 23 f that adjusts the incident illumination light is provided in front of the light modulator 25.
- the light selection unit 220 is arranged at the rear stage of the liquid crystal light valve constituting the light modulation unit 25 described above.
- the light selection unit 220 is a panel-type member that switches between blocking and transmitting light, and is configured by a liquid crystal panel, for example. That is, the light selection unit 220 is configured by a switching panel for selecting an emission angle for each pixel of the light emitted from the light modulation unit 25.
- the liquid crystal light valve constituting the light modulation unit 25 and the light selection unit 220 constitute a so-called double light valve, so that the emission position and emission angle of each component light can be determined. It is possible to adjust. That is, the light modulation unit 25 determines the position of the light emitting point as the light emitting unit that emits light in a planar shape as the first light valve, and the light selection unit 220 generates from the first light valve as the second light valve. The light emission angle is determined, and these perform the essential function as the light emission adjustment mechanism 200.
- FIG. 10A conceptually shows the light emission adjusting mechanism 200 and the surrounding structure in the structure shown in FIG.
- the light modulator 25 modulates the illumination light in units of pixels
- the component light IL is generated from the position of each pixel constituting the liquid crystal panel 26 (first light valve) of the light modulator 25 (illustrated).
- Each is injected under the control of (omitted). That is, the plurality of pixels constituting the liquid crystal panel 26 that is the first light valve are a plurality of light emitting points arranged in a plane.
- Each component light IL emitted from the light modulation unit 25 is adjusted in emission angle in the light selection unit 220 (second light valve).
- the projection area PD is composed of two divided areas PD1 and PD2. A part of each component light IL is projected toward the divided area PD1, and the other components are divided. It is projected toward the area PD2. That is, the component light IL is distributed according to the emission position in the light modulation unit 25 and the emission angle determined in the light selection unit 220.
- the light emission adjusting mechanism 200 emits each component light constituting the image light from a plurality of positions at different angles, so that the irradiated region, that is, the projection region has a depth. That is, even in the case of having regions at different distances in the depth direction, it is possible to project the projection region simultaneously in parallel.
- FIG. 11A shows an example of a partially enlarged view of the double light valve structure in the present embodiment.
- the number of pixels constituting the light valve (first light valve) on the light modulation unit 25 side described above is the same as the number of pixels constituting the light valve (second light valve) on the light selection unit 220 side.
- the number of pixels of the second light valve is set to be larger than the number of pixels of the first light valve (on the second light valve side).
- a plurality of pixels P2 (16 ⁇ 4 ⁇ 4 in the illustrated example) on the light selection unit 220 side may correspond to one pixel P1 on the light modulation unit 25 side. Thereby, it is possible to select a component having a necessary emission angle for the component of the image light emitted from the light modulation unit 25 side in a state where the angle is spread for each pixel.
- each pixel of the first light valve is a light emitting point as described above.
- a light source element PQ that is a self-luminous light source and generates light in a spread state is used for the light emitting unit, a plurality of light source elements PQ are provided with respect to each light source element PQ.
- the emission angle of the light emitted from the light source element PQ can be regulated.
- the projector according to the third embodiment will be described below.
- the projector according to the second embodiment is a modification of the projector according to the second embodiment, and portions not specifically described have the same structure as the projector according to the second embodiment.
- the projector 302 serves as a light emitting unit of the light emission adjustment mechanism 300 to separate the light source device 21 and the light source light from the light source device 21 into three color lights of blue, green, and red.
- a color separation optical system 23 and a light modulation unit 325 that is illuminated by the illumination light of each color emitted from the color separation optical system 23, and the light modulation unit 325 as a component of the light emission adjustment mechanism 300 other than the light emission unit.
- a light selection unit 320 that performs selection of component light constituting the image light of each color emitted from.
- the projector 302 projects the cross dichroic prism 27 that is a combining prism (synthetic optical system) that combines the image light of each color selected by the light selection unit 320 and the image light that has passed through the cross dichroic prism 27.
- a projection optical system 40 that projects onto the region PD.
- the light source device 21 includes a light source lamp 21a, a concave lens 21b, a pair of lens arrays 21d and 21e, and a polarization conversion member. 21g and a superimposing lens 21i, and the light source lamp 21a includes a lamp body 22a and a concave mirror 22b.
- the superimposing lens 21i appropriately superimposes the illumination light that has passed through the polarization conversion member 21g as a whole, thereby enabling superimposing illumination on the liquid crystal light valves 25a, 25b, and 25c of each color provided in the light modulation unit 325.
- the illumination light that has passed through both the lens arrays 21d and 21e and the superimposing lens 21i passes through the color separation optical system 23 described in detail below, and the liquid crystal panels 26a, 26b, and 26c for the respective colors provided in the light modulator 325. Is uniformly superimposed.
- the color separation optical system 23 includes first and second dichroic mirrors 23a and 23b, field lenses 23f, 23g, and 23h, and reflection mirrors 23j, 23m, 23n, and 23o, and constitutes an illumination device together with the light source device 21.
- the first dichroic mirror 23a transmits, for example, blue (B) color among the three colors of blue green red, and reflects green (G) and red (R) colors.
- the second dichroic mirror 23b reflects, for example, the green (G) color and transmits the red (R) color among the two incident green and red colors.
- the B light, G light, and R light constituting the light source light are respectively guided to the first, second, and third optical paths OP1, OP2, and OP3, and are incident on different illumination targets.
- the light modulation unit 325 includes three liquid crystal light valves 25a, 25b, and 25c corresponding to the three optical paths OP1, OP2, and OP3 for each color described above.
- the liquid crystal light valve 25a for B color disposed in the first optical path OP1 includes a liquid crystal panel 26a illuminated by B light, a light incident side polarizing plate 25e disposed on the incident side of the liquid crystal panel 26a, and a liquid crystal panel 26a.
- the light emission side polarizing plate 25h is provided on the light emission side.
- the liquid crystal light valve 25b for G color arranged in the second optical path OP2 includes a liquid crystal panel 26b illuminated by G light, a light incident side polarizing plate 25f arranged on the incident side of the liquid crystal panel 26b, and a liquid crystal panel 26b.
- the light emission side polarizing plate 25i is provided on the light emission side of the light emission side.
- the liquid crystal light valve 25c for R color arranged in the third optical path OP3 includes a liquid crystal panel 26c illuminated by R light, a light incident side polarizing plate 25g arranged on the incident side of the liquid crystal panel 26c, and a liquid crystal panel 26c. And a light exit side polarizing plate 25j disposed on the exit side of the light source.
- the light selection unit 320 includes three switching panels 320a, 320b, and 320c that are respectively arranged in the subsequent stage of the three liquid crystal light valves 25a, 25b, and 25c that constitute the light modulation unit 325 described above.
- the switching panel 320a arranged at the rear stage of the liquid crystal light valve 25a selects an emission angle for each pixel of the B light emitted from the liquid crystal light valve 25a.
- the switching panel 320b arranged at the rear stage of the liquid crystal light valve 25b selects an emission angle for each pixel of the G light emitted from the liquid crystal light valve 25b.
- the switching panel 320c disposed at the rear stage of the liquid crystal light valve 25c selects an emission angle in units of pixels for the R light emitted from the liquid crystal light valve 25c, that is, adjusts the angle component.
- the cross dichroic prism 27 corresponds to a light combining optical system, and is formed with a pair of dichroic mirrors 27a and 27b intersecting in an X shape.
- One of the first dichroic mirrors 27a reflects B light, and the other
- the second dichroic mirror 27b reflects the R light. Accordingly, color image light obtained by combining the B light, the G light, and the R light is emitted from the cross dichroic prism 27.
- the projection optical system 40 projects the color image light synthesized by the cross dichroic prism 27 onto the projection area PD at a desired magnification. That is, a color moving image or a color still image with a desired magnification corresponding to the drive signal or image signal input to each of the liquid crystal panels 26a to 26c is projected.
- the light emission adjusting mechanism 300 emits each component light constituting the image light from a plurality of positions at different angles, so that the irradiated region, that is, the projection region has a depth. That is, even in the case of having regions at different distances in the depth direction, it is possible to project the projection region simultaneously in parallel.
- the present invention is not limited to the above-described embodiments or examples, and can be implemented in various modes without departing from the gist thereof.
- a light emitting unit 410 composed of a surface emitting laser or the like, and a digital micromirror including a large number of micromirrors MM arranged.
- the light selection unit 420 configured by a device, component light IL emitted in a plane shape parallel to each other by the light emitting unit 410 is projected at a predetermined emission angle by the light selection unit 420 which is a digital micromirror device. It may be a thing. In this case, for example, the emission timing of the surface emitting laser and the rotation speed of the digital micromirror device are synchronized.
- the digital micromirror device may be used only for switching between on and off, and may be applied as a light selection unit.
- the light irradiation is described for the light source point of each light emitting unit and the pixel unit of the panel, but the planar light emitting unit is configured by combining several partial surface light sources. You can also. That is, in the configuration of the light emitting unit, for example, it is also possible to configure one light emitting unit by combining several block-shaped small light source units that generate image light by generating light in a planar shape from a plurality of (many) positions. It is. In this case, for example, one block-shaped small light source unit irradiates one area with the projection region PD, and all the block-shaped small light source units are combined so that the entire projection region PD is irradiated. It is good also as what to do.
- component light emitted from different block-shaped small light source units may be irradiated by superimposing part or all of the projection region PD.
- control may be performed so that image correction is performed in one block-shaped small light source unit according to the distance image from the imaging unit 70.
- the emission angle may be adjusted by providing a variable mirror.
- the light emitting unit is configured such that, for example, self-luminous elements are arranged on a plane, but may be configured to be arranged on a curved surface. Moreover, it is good also as what adjusts the emission position and emission angle of each component light by changing the arrangement
- the panel used for the light selection unit is not limited to a transmissive liquid crystal panel, but may be a reflective liquid crystal panel.
- the number of pixels may be increased in a pseudo manner by providing a pixel shifting function in the light emitting unit.
- the projection optical system 40 may be a zoom lens, can be reduced in projection, and the depth of field can be made variable. By adjusting the depth of field of the projection optical system 40, the display range in the depth direction can be expanded. Furthermore, by making the focus state of the projection optical system 40 variable, the three-dimensional projection space by the projector 2 can be moved along the direction of the optical axis OA.
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Abstract
Description
図1及び図2に示すように、本発明に係る第1実施形態のプロジェクター2は、画像光を投射する光学系部分50と、光学系部分50での画像光の投射における投射可能な被照射領域内にある投影領域PDを撮像して距離に関する情報を取得するための撮像部70と、光学系部分50の動作を制御する回路装置80とを備える。
以下に、第2実施形態のプロジェクターについて説明する。第2実施形態のプロジェクターは、第1実施形態のプロジェクターを変形したものであり、特に説明しない部分は、第1実施形態のプロジェクターと同様の構造を有する。
以下に、第3実施形態のプロジェクターについて説明する。第2実施形態のプロジェクターは、第2実施形態のプロジェクターを変形したものであり、特に説明しない部分は、第2実施形態のプロジェクターと同様の構造を有する。
Claims (11)
- 発光部において複数の位置からそれぞれ射出される成分光について、当該成分光ごとに利用する射出角度を調整可能にする光射出調整機構と、
前記光射出調整機構を経た成分光によって照射される被照射領域内にあって、かつ、奥行き方向について異なる位置を含む投影領域に対応して、前記光射出調整機構から射出される成分光の射出位置および射出角度を制御する光制御部と、を備えるプロジェクター。 - 前記光射出調整機構を経た成分光を前記投影領域上に投射させる投射光学系をさらに備える、請求項1に記載のプロジェクター。
- 前記光射出調整機構は、前記発光部から射出された成分光ごとに、光の透過を制限して利用する射出角度にある成分を選択する光選択部を有する、請求項1及び2のいずれか一項に記載のプロジェクター。
- 前記光選択部は、光の遮断と透過とを切り替えるパネル型部材であり、
前記光制御部は、前記パネル型部材における光の遮断と透過との切り替えを制御して、前記発光部から射出された成分光のうち、所定の射出角度にある成分を選択させる、請求項3に記載のプロジェクター。 - 前記光射出調整機構において、前記発光部は、面状に広がりを有する発光源を含み、射出される成分光は、2次元的または3次元的広がりを有する前記投影領域に対して一斉照射される、請求項1から4までのいずれか一項に記載のプロジェクター。
- 前記発光部は、面状に配置された複数の発光点から成分光をそれぞれ射出する複数の自発光型素子を有する、請求項1から5までのいずれか一項に記載のプロジェクター。
- 前記自発光型素子は、コヒーレント光を発生させる、請求項6に記載のプロジェクター。
- 前記光射出調整機構は、前記発光部における複数の発光点に対応してそれぞれ設けられて各発光点から発した光の射出角度をそれぞれ調整する複数のレンズ部を有する、請求項6及び7のいずれか一項に記載のプロジェクター。
- 前記発光部は、光源部で発生させた光源光から照明光を形成する照明光学系と、前記照明光学系からの照明光を変調する光変調部とを有する、請求項1から5までのいずれか一項に記載のプロジェクター。
- 前記光射出調整機構は、前記発光部から射出された成分光から射出角度にある成分を選択する光選択部として、光の遮断と透過とを切り替えるパネル型部材を有し、前記パネル型部材は、前記光変調部を構成する各画素に対して複数の画素を対応させるように構成されている、請求項9に記載のプロジェクター。
- 前記光射出調整機構は、前記発光部において各色の光に応じて色ごとの成分光をそれぞれ形成させて、当該各色の成分光ごとに利用する角度成分を調整し、
前記光射出調整機構を経た各色の成分光を合成する合成光学系をさらに備える、請求項1から10までのいずれか一項に記載のプロジェクター。
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US15/122,296 US9900565B2 (en) | 2014-03-26 | 2015-03-17 | Projector capable of adjusting a light exit angle |
CN201580014100.2A CN106133597B (zh) | 2014-03-26 | 2015-03-17 | 投影仪 |
EP15769552.9A EP3125039A4 (en) | 2014-03-26 | 2015-03-17 | Projector |
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- 2015-03-17 CN CN201580014100.2A patent/CN106133597B/zh active Active
- 2015-03-17 US US15/122,296 patent/US9900565B2/en active Active
- 2015-03-17 EP EP15769552.9A patent/EP3125039A4/en not_active Withdrawn
- 2015-03-17 KR KR1020167029579A patent/KR20160135828A/ko not_active Application Discontinuation
- 2015-03-23 TW TW104109223A patent/TWI638218B/zh active
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CN108267918B (zh) * | 2016-06-30 | 2020-11-06 | 海信集团有限公司 | 投影光源驱动控制电路 |
Also Published As
Publication number | Publication date |
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EP3125039A1 (en) | 2017-02-01 |
US20160370695A1 (en) | 2016-12-22 |
KR20160135828A (ko) | 2016-11-28 |
TW201544893A (zh) | 2015-12-01 |
US9900565B2 (en) | 2018-02-20 |
JP2015184618A (ja) | 2015-10-22 |
TWI638218B (zh) | 2018-10-11 |
CN106133597B (zh) | 2018-01-23 |
JP6287437B2 (ja) | 2018-03-07 |
EP3125039A4 (en) | 2017-11-15 |
CN106133597A (zh) | 2016-11-16 |
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