WO2005036874A1 - マルチプロジェクションディスプレイ - Google Patents
マルチプロジェクションディスプレイ Download PDFInfo
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- WO2005036874A1 WO2005036874A1 PCT/JP2004/015462 JP2004015462W WO2005036874A1 WO 2005036874 A1 WO2005036874 A1 WO 2005036874A1 JP 2004015462 W JP2004015462 W JP 2004015462W WO 2005036874 A1 WO2005036874 A1 WO 2005036874A1
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- Prior art keywords
- projection display
- unit
- light source
- image information
- solid
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
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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
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
- G03B37/04—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe with cameras or projectors providing touching or overlapping fields of view
-
- 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
- G03B21/10—Projectors with built-in or built-on screen
-
- 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
- G03B21/28—Reflectors in projection beam
-
- 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
- H04N9/3147—Multi-projection systems
-
- 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]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
-
- 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
-
- 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
- G03B21/2033—LED or laser light sources
Definitions
- the present invention relates to a multi-projection display.
- Multi-projection displays that can be displayed are known
- Such multi-projection displays can display high-definition and high-intensity images compared to ordinary projectors, so they can be used in cinemas, museums, museums, seminar rooms, mini-theaters, It is expected that it will be widely used in the amusement areas for business use such as public institutions and companies, and in the home use field such as home theaters.
- Patent document 1 JP-A-8-82854
- Patent Document 2 JP-A-8-94974
- Patent Document 3 Japanese Patent Application Laid-Open No. 2000-1-3339672
- Patent Document 4 International Patent Publication No. WO 99/3187 7 Pamphlet
- Patent Document 5 JP-A-9-326981
- Patent Document 6 Japanese Patent Application Laid-Open No. 2001-251661
- Patent Document 7 Japanese Patent Application Laid-Open No. 6-17832 / 7
- Patent Document 9 U.S. Pat. No. 5,955,6000 Description of the Invention
- the present inventor has made intensive efforts to achieve the above-mentioned object, and as a result, using a solid-state light source as a light source of a multi-projection display, and performing an adjustment operation using light from the solid-state light source, the above-mentioned object has been achieved. It has been found that this can be achieved, and the present invention has been completed.
- the multi-projection display of the present invention comprises: a plurality of projector units for modulating light from a solid-state light source according to image information and projecting the light; and inputting the light to each of the plurality of projector units.
- a unit image information generating unit for generating image information hereinafter referred to as “unit image information”
- a unit image information for correcting the unit image information based on a photographing result of a projected image projected on a screen a correction unit.
- the multi-projection display of the present invention instead of a high-pressure mercury lamp or a metal halide lamp, which takes at least several minutes until the light emission state becomes stable after being turned on although it is high in brightness, it is turned on. Since a solid-state light source that provides a stable light-emitting state is used immediately, the time required to capture the projected image projected on the screen for each project unit can be significantly reduced. As a result, the adjustment work time for obtaining consistency between the projected images from the respective projector units can be greatly reduced, and the convenience is greatly improved.
- the solid-state light source can be freely turned on or off, so that a shutter having a complicated mechanism can be eliminated. Besides, When the solid-state light source is turned on, it instantly becomes stable and stable, so shooting can be started immediately, and the time required to operate the shutter is not required, and the adjustment time can be further reduced.
- the solid-state light source is preferably an LED light source, a semiconductor laser light source, a solid-state laser light source, or an EL light source.
- the unit image information correction unit is configured to perform the adjustment based on a result of capturing the adjustment unit image projected by the projector unit.
- the unit image information is corrected.
- the unit image information correction unit can correct the unit image information based on the result of capturing the normal image, but can correct the unit image information based on the result of capturing the adjustment unit image in this manner. By doing so, more accurate catching can be performed quickly.
- unit image for adjustment various unit images suitable for performing correction of the unit image information, such as a white or monochromatic solid image and a monochromatic lattice pattern, can be used.
- the image information for adjustment may be stored in advance in the multi-projection display, and the unit image information generating unit may generate the unit image for adjustment using the image information for adjustment during the adjustment work. Furthermore, the unit image information for adjustment may be stored in advance in the multi-projection display, and the unit image information for adjustment may be used as it is during the adjustment work. In addition, the multi-projection display always shows
- the adjustment image information may be input (by DVD or the like), and the unit image information generation unit may generate the adjustment unit image information using the adjustment image information. Further, the adjustment unit image information may be directly input to the multi-projection display every time an adjustment operation is performed.
- the unit image information correction unit may include a shape, a position, and a position of a unit image projected by the project projector. It is preferable to make a correction for Z or inclination.
- the amount of light emitted from the solid-state light source in a projector unit other than the projector unit having the lowest luminance level is determined by calculating the luminance level in this projector unit. It is preferable to lower the brightness so as to match the brightness level of the projector unit having the lowest brightness level. Further, in order to absorb the difference in color characteristics of each projector unit, it is preferable that the above-described adjustment be performed for each color light.
- the amount of emitted light is small even when the voltage is lowered or increased. Since the color temperature changes only slightly when the color temperature increases or decreases, there is no deterioration in image quality.
- the solid-state light source control unit has a function of independently controlling a voltage supplied to the solid-state light source for each of the project units. With this configuration, the light emission amount of the solid-state light source can be easily reduced or increased for each projector unit. In the multi-projection display according to (13), it is preferable that the solid-state light source control unit has a function of independently controlling a pulse width of AC power supplied to the solid-state light source for each of the project units.
- the light emission amount of the solid-state light source can be easily reduced or increased for each projector unit.
- a rear projection type projection screen further including a transmission screen for projecting images projected from the plurality of projector units.
- it is a multi-projection display.
- the adjustment time described above can be significantly reduced, and when assembling the multi-projection display in the housing, the time required for the assembling work is significantly reduced, thereby reducing the cost of the product. It will be easier. In addition, when performing maintenance of the multi-projection display, the time required for the maintenance work is greatly reduced, thereby improving the convenience for the user.
- the imaging device in the housing of the multi-projection display.
- the multi-projection display according to any one of the above (1) to (13) can be a front-projection-type multi-projection display for projecting a projection image from a projector unit on the front. .
- the present inventor has found that the above-described excellent effects can be obtained by using a solid-state light source as the light source of the multi-projection display and performing the adjustment work using the light from the solid-state light source. It has been found that other excellent effects can also be obtained by using a solid-state light source as the light source of the operation display and controlling the amount of light emitted from the solid-state light source for each projector unit.
- the solid-state light source control unit may supply a voltage to be supplied to the solid-state light source to each of the projector units or to the solid-state light source. It is preferable to have a function of controlling each electro-optic modulation device.
- the amount of light emitted from the solid-state light source can be easily reduced or increased for each projector unit or each electro-optical modulator.
- the electro-optic modulator is a liquid crystal device that writes two or more times for one unit screen information
- the solid-state light source The control unit preferably has a function of causing the solid-state light source to emit light during one frame while avoiding at least the first writing period of the liquid crystal device.
- the light emission of the solid-state light source is not sufficiently responded to by the liquid crystal molecules.
- the contrast can be further improved, since the first writing period described in the above is avoided.
- the electro-optical modulator is a liquid crystal device that sequentially writes an image for each of a plurality of screen areas, and the solid-state light source It is also preferable that the control unit has a function of causing the solid-state light source to emit light during one frame while avoiding a writing period of an image of the liquid crystal device.
- the solid-state light source emits light while avoiding the writing period of the image of the liquid crystal device, so that the contrast in the multi-projection display is further improved.
- FIG. 1 is a diagram illustrating a configuration of a multi-projection display according to the first embodiment.
- FIG. 4 is a block diagram illustrating an outline of the multi-projection display according to the first embodiment.
- FIG. 5 is a block diagram showing an outline of the multi-projection display according to the first embodiment.
- FIG. 6 is a diagram for explaining an operation effect of the multi-projection display according to the first embodiment.
- FIG. 7 is a diagram for explaining the operation and effect of the multi-projection display according to the first embodiment.
- FIG. 8 is a diagram for explaining an operation effect of the multi-projection display according to the first embodiment.
- FIG. 9 is a diagram for explaining the operation and effect of the multi-projection display according to the first embodiment.
- FIG. 10 is a diagram for explaining the operation and effect of the multi-projection display according to the first embodiment.
- FIG. 12 is a view for explaining the operation and effect of the multi-projection display according to the first embodiment.
- FIG. 14 is a diagram for explaining the operation and effect of the multi-projection display according to the second embodiment.
- FIG. 15 is a block diagram showing an outline of the multi-projection display according to the third embodiment.
- FIG. 16 is a diagram for explaining the operation and effect of the multi-projection display according to the third embodiment.
- FIG. 17 is a block diagram showing an outline of the multi-projection display according to the fourth embodiment.
- FIG. 18 is a diagram for explaining the operation and effect of the multi-projection display according to the fourth embodiment.
- FIG. 19 is a diagram for explaining the operation and effect of the multi-projection display according to the fifth embodiment.
- FIG. 20 is a diagram for explaining the operation and effect of the multi-projection display according to the fifth embodiment.
- FIG. 21 is a diagram for explaining the operation and effect of the multi-projection display according to the sixth embodiment.
- FIG. 22 is a diagram illustrating an operation of the multi-projection display according to the seventh embodiment.
- FIG. 23 is a diagram for explaining the operation of the multi-projection display according to the eighth embodiment.
- FIG. 25 is a diagram showing a configuration of the multi-projection display according to the tenth embodiment.
- FIG. 1 is a diagram illustrating a configuration of a multi-projection display according to the first embodiment.
- Fig. 1 (a) is a cross-sectional view as viewed from the side
- Fig. 1 (b) is a front view.
- FIG. 2 shows a multi-projection device according to the first embodiment.
- FIG. 2 is a diagram illustrating a configuration of a projector unit in a display.
- FIGS. 3 to 5 are block diagrams showing an outline of the multi-projection display according to the first embodiment.
- the multi-projection display 100 has four projectors 130 arranged in a housing 102 (only two are shown in the figure).
- This is a rear-projection type manolech projection display in which a projected image from is reflected by a reflector 104 and projected on a transmissive screen 108.
- 130 is a LED light source as a solid-state light source, 13 R, 13 G, 13 B, and three liquid crystal devices as electro-optical modulators.
- To An see Fig. 3
- Bn see Fig. 4
- the one projected by 38 is used.
- the multi-projection display 100 includes a unit image information generation unit 120, a unit image information correction unit 150, an image processing unit 146, and an optical correction unit 154.
- a control unit 110 having four projector units 130, an imaging device 140, a video signal receiving unit 160, an adjustment image information storage unit 122, and a correction parameter storage unit 1 5 2
- Unit image information generating unit 1 20 has a function of generating a plurality of unit picture images information Ai ⁇ A n based on original image information A (see Fig. 3.) And the adjustment unit image information based on adjusting image information B It has a function to generate B i Bn (see Fig. 4).
- the imaging device 140 converts an analog signal from the imaging device 144 into a digital signal, and an imaging device 144 that captures a predetermined area of the adjustment image projected on the transmissive screen 108. AD conversion element 144.
- the image processing unit 146 compares the result obtained by performing image processing on the imaging result of the imaging device 140 with the adjustment image information B and the like, and compares the result with the unit image information collection unit. It has the function of outputting to 150.
- the unit image information correction unit 150 is configured to determine a boundary between unit images projected by adjacent ones of the plurality of projector units 130 based on a photographing result of the imaging device 140 so that the boundary between the unit images is a transmission screen. It has a function to correct the unit image information so that it is not noticeable on the screen. As a result, the corrected unit image information A 1 * to An * is output to each projector 130 (see FIG. 5).
- the adjustment image information is input (by a DVD or the like), and the unit image information generation unit generates the adjustment unit image information using the adjustment image information. Good. Further, the adjustment unit image information may be directly input every time the adjustment work is performed.
- the unit image information capturing unit 150 may include a unit image information capturing unit 150 that is configured to project, shape, position, Z, or tilt the unit image projected by each projector unit 130. It has a function to correct for. For this reason, the shape, position and / or inclination between the projection images from each projector unit 130 can be optimized, and the consistency between the projection images from each projector unit 130 can be improved. become.
- FIG. 6 to FIG. 12 are diagrams illustrating the operation and effect of the multi-projection display according to the first embodiment.
- FIGS. 3 to 12 how the multi-projection display 100 according to the first embodiment corrects the shape, position, and / or inclination between the projected images from the respective projector units 130. Explain whether you can do it. Also, how to correct the luminance and / or color between the projected images from each projector unit 130 will be described. (Display state before adjustment)
- unit image information generating section 120 is based on original image information A. Generate unit image information Ai to An. Each projector unit 130 projects a unit image corresponding to the unit image information Ai to An on the transmissive screen 108. Therefore, on the transmissive screen 108, a projection image relating to each unit image from each projector unit 130 is projected. At this time, since the multi-projection display 100 is in a stage before adjustment, distorted projected images (Ia0, Ib0, IcO, IdO) as shown in FIG. 6 (i) are projected. Will be done.
- unit image information generation unit 120 stores adjustment image information B in unit image information B.
- the unit image information for adjustment B i to B n is generated based on this.
- Each projector unit 130 projects a unit image corresponding to the adjustment unit image information B i to Bn on the transmission screen 108. Therefore, at this time, since the multi-projection display 100 is in a stage before adjustment, similarly to the above, the distorted projection images (I a0, I b0, I c 0) as shown in FIG. , I do) are projected.
- the optical correction means 154 determines the position and / or orientation of the housing of each projector 130 based on the photographed result. Optical correction. Note that, in the present invention, instead of the housing of the projector unit 130, the position and / or orientation of the projection lens 1338 and the reflector 104 of the projector unit 130 are optically determined. Correction can be made.
- each projector unit 130 When the adjustment image information B from the adjustment image information storage unit 122 is input to the unit image information generation unit 120 again, each projector unit 130 outputs the adjustment unit image information B i to B
- the unit image corresponding to n is projected on the transmissive screen 108, but at this time, the multi-projection display 100 is designed based on the shooting Since the position and / or orientation of the projected image has been corrected, the projected images (Ia1, Ib) with reduced distortion are displayed on the transmissive screen 108 as shown in Fig. 6 (ii). 1, I c 1, I di).
- Adjustment work 2 Adjustment work on shape, position and inclination of unit image by unit image information correction unit 150
- each of the projected images (Ia1, Ibl, Ic1, Idl) relating to the adjustment image shown in FIG. 6 (ii) is photographed using the imaging device 144 of the imaging device 140. I do.
- the unit image information correction unit 150 determines a correction parameter used when correcting the unit image information based on the photographing result. Then, the determined correction parameters are stored in the correction parameter storage unit 152, and thereafter, a plurality of unit image information is generated from the original image information based on the correction parameters.
- these adjustments 1 and 2 are shown in, for example, FIG. 7 (when there is a tilt between the projected unit images) or FIG. 8 (when there is no tilt between the projected unit images).
- correction is performed so that the reference lines of the adjustment images in the two adjacent projector units 130 match, or the reference lines of the adjustment images in one projector unit 130 are adjusted. Sometimes I do work to shoot.
- an LED light source 132 R, 1 which can obtain a stable light emitting state as soon as it is turned on. Since 32 G and 13 22 B are used, the time required for the above adjustment work can be significantly reduced.
- Adjustment work 3 Adjustment work on brightness and color of unit image by unit image information correction unit 150
- the weighting function is a weighting function in consideration of ⁇ correction.
- the unit image information capturing unit 150 has a function of correcting brightness and color or color for each pixel in the plurality of projector units 130. Have.
- the unit image information correction unit 150 includes a whole adjustment image formed by the plurality of adjustment unit images projected by the plurality of projector units 130, and an original adjustment image. Of each project Preferably, it has a function of correcting a unit image for luminance and / or color for each pixel in the ejector unit 130.
- the multi-projection display 100 further includes a correction parameter automatic acquisition device that automatically acquires an adjustment parameter by photographing an adjustment image in a predetermined case.
- the automatic correction parameter acquisition device automatically operates to reset the correction parameters. It is possible to acquire the correction parameters automatically at a fixed time every day (for example, at 4 am) so that the automatic acquisition device automatically operates to reacquire the correction parameters. As a result, smooth image quality can be maintained without the user's hands, which improves convenience. In addition, even if the characteristics of the LED light sources 1332R, 1332G, and 13B and the liquid crystal devices 13R, 13G, and 13B change with the passage of time, the change in the characteristics is not affected. Since the corresponding correction parameters can be automatically obtained, it is possible to always suppress the deterioration of the image quality due to the change over time.
- FIG. 13 is a diagram showing a configuration of the multi-projection display according to the second embodiment.
- FIG. 14 is a diagram for explaining the operation and effect of the multi-projection display according to the second embodiment.
- the multi-projection display 200 according to the second embodiment has an optical axis of a projection light beam from each projector 230 that is perpendicular to the screen surface of the transmissive screen 208. It is configured to be Therefore, the unit image from each projector unit 230 has no trapezoidal distortion.
- a diagram showing the operation and effect of the multi-projection display 200 according to the second embodiment is different from FIG. 6 shown in the multi-projection display 100 according to the first embodiment, as shown in FIG. become.
- the light source of each projector unit 230 As the light source of each projector unit 230, a stable light emitting state can be obtained as soon as the light is turned on (the light source can be instantaneously turned on). (Not shown), the same effect as in the case of the multi-projection display 100 according to the first embodiment can be obtained.
- the multi-projection display according to Embodiment 3 The LED light source (not shown) which can obtain a stable light-emitting state as soon as it is turned on (can be turned on instantly) is used as the light source of each projector unit 130 in the case of 300.
- the same effects as those of the multi-projection displays 100 and 200 according to the first or second embodiment can be obtained.
- the multi-projection display 300 according to the third embodiment can correct a unit image without using an optical correction unit, the structure can be simplified, and cost and reliability can be reduced. There is also an effect that improvement can be achieved.
- This multi-projection display 300 can be particularly suitably used as a rear-projection-type multi-projection display in which the arrangement of the projector units is fixed in the housing.
- unit image information generating section 120 converts original image information A to original image information A. Based on this, unit image information A1 to An is generated.
- Each project unit 130 projects a unit image corresponding to the unit image information Ai to An on the screen. Therefore, a projection image relating to each unit image from each projector unit 130 is projected on the screen.
- Fig. 1 6 (i) to indicate such distorted projection images (I a o, I b 0 , I co, I do) is projected Will be.
- Adjustment work 1 Adjustment work on the shape, position and inclination of the unit image by the unit image information correction unit 150
- the adjustment operation 1 will be described.
- the unit image information generation unit 120 stores the adjustment image information B in the adjustment image information B. Based on this, unit image information for adjustment Bl to Bn (not shown) is generated.
- Each projector unit 130 projects a unit image corresponding to the adjustment unit image information B i to B n on a screen. Therefore, at this time, since the multi-projection display 300 is in a stage before adjustment, the distorted projection images (I ao, lbo, I co, I do) as shown in FIG. ) Is projected.
- the unit image information correction unit 150 determines a correction parameter used when correcting the unit image information based on the photographing result. Then, the determined correction parameters are stored in the correction parameter storage unit 152, and thereafter, a plurality of unit image information is generated from the original image information based on the correction parameters.
- the unit image information generating unit 120 when the original image information A from the video signal receiving unit 160 is input to the unit image information generating unit 120, the unit image information generating unit 120 generates a unit based on the original image information A. Image information is generated. At this time, since the unit image information is corrected by the correction parameter, unit image information A 1 * to An * (not shown) is generated. Therefore, each projector unit 130 projects a unit image corresponding to the unit image information A 1 * to An * on the screen. At this time, since the multi-projection display 300 has already been adjusted, as shown in Figure 16 (ii), The projected images (Ia2, lb2, Ic2, Id2) from the ejector unit 130 are accurately aligned.
- the adjustment operation 2 will be described. For simplicity, the explanation focuses on the adjustment in the overlapping area between two adjacent projector units (tentatively, PJ Ua and PJ Ub).
- a weighting function is assigned to the unit image information in the overlapping area so that the projected images (Ia2, lb2) from the adjacent projector units PJ Ua and PJ Ub are connected smoothly. Integrate with the pixel value.
- the weighting function is a weighting function in consideration of ⁇ correction.
- a multi-projection display 400 has an LED light source 132 for each projector unit 130 in addition to the configuration of the multi-projection display 100 according to the first embodiment.
- a solid-state light source control unit 170 for controlling the amount of light emitted from R, 13G, and 13B is further provided.
- the solid-state light source controller 170 also has a function of controlling the amount of light emitted from the LED light sources 132R, 132G, and 132B for each liquid crystal device 134R, 134G, and 134B. are doing.
- the amount of light emitted from the light sources 1321, 132G, and 132B is changed for each of the liquid crystal devices 134R, 134G, and 134B. Since the control can be performed independently, the difference in the color characteristics of each projector unit 130 must be controlled by controlling the amount of light emitted from the light sources 1321, 13G, and 13B. Can be absorbed.
- the solid-state light source controller 172 controls the amount of light emitted from the LED light sources 13 R, 13 G, and 13 B in addition to the functions described above. It also has a function to control dynamically.
- the liquid crystal device 134R, 1R instead of or in addition to lowering the light transmittance of 34 G, 134 B, reducing the amount of light emitted by the LED light sources 132 R, 132 G, 132 B allows the entire screen to be displayed. You will be able to darken.
- FIG. 20 (b) when displaying an image as a whole (for example, when displaying a night scene of a movie), the liquid crystal device 134R, 1R, reducing the amount of light emitted by the LED light sources 132 R, 132 G, 132 B allows the entire screen to be displayed. You will be able to darken.
- FIG. 20 (b) when displaying an image as a whole (for example, when displaying a night scene of a movie), the liquid crystal device 134R, 1R Instead of or in addition to lowering the light transmittance of 34 G, 134 B, reducing the amount of light emitted by the LED light sources 132 R, 132 G, 132 B allows the entire screen to be
- the liquid crystal device 134R, 1R 34 G, 1 34 B instead of or in addition to increasing the light transmission of 34 B, LED light sources 13 2 R, 13 2 G, 1 By increasing the amount of 32B light emitted, the entire screen can be made brighter.
- the number of effective gradations and the dynamic range can be made larger than before, and a high-quality multi-projection display with excellent black level can be obtained.
- FIG. 21 is a diagram for explaining the operation and effect of the multi-projection display according to the sixth embodiment.
- the multi-projection display 600 (not shown) according to the sixth embodiment includes, similarly to the multi-projection display 500 according to the fifth embodiment, a liquid crystal device 134 R for each projector unit 130. , 134G, and 134B each have a solid-state light source control unit 174 (not shown) for controlling the amount of light emitted from the LED light sources 132R, 132G, and 132B. . Further, the solid-state light source controller 174 dynamically controls the amount of light emitted from the light sources 13 R, 13 G, and 13 B, as in the case of the multi-projection display 500 according to the fifth embodiment. It also has the function of performing
- the solid-state light source control unit 174 dynamically controls the amount of light emitted from the LED light sources 13 2 R, 13 2 G, and 13 2 B. It has a function to perform various controls for each projector unit 130.
- the multi-projection display 600 according to the sixth embodiment has the following effects in addition to the effects of the multi-projection display 500 according to the fifth embodiment.
- the multi-projection display when displaying an image that exists in a multi-projection display, can demonstrate its expressive ability beyond the effective number of gradations and dynamic range inherent in the multi-projection display. Will be able to
- the multi-projection display 700 (not shown) according to the seventh embodiment is similar to the multi-projection display 600 according to the sixth embodiment, and is provided for each projector 130 and the liquid crystal device 1. It has a solid-state light source control unit 176 (not shown) that controls the amount of light emitted from the LED light sources 132R, 132G, and 132B for each 34R, 134G, and 134B.
- the solid-state light source controller 176 has a function of dynamically controlling the amount of light emitted from the light sources 1321, 13G, and 13B for each projector unit 130. I have.
- the multi-projection display 700 according to the seventh embodiment has, as a liquid crystal device, liquid crystal devices 134R, 134G, and 134B (not shown) that write two or more times for one unit screen information. are doing.
- the solid-state light source control unit 176 controls the light emission of the solid-state light source in one frame by using the liquid crystal devices 134 R, 134 G, and 134 B. It has a function to make it possible to avoid writing at least the first writing period.
- FIG. 22 is a diagram illustrating an operation of the multi-projection display according to the seventh embodiment.
- Fig. 22 (a) shows the case where the liquid crystal device is a 2x speed driven liquid crystal device
- Fig. 22 (b) shows the case where the liquid crystal device is a 3x speed driven liquid crystal device
- Fig. 22 (c) Indicates the case where the liquid crystal device is a quadruple speed driven liquid crystal device.
- writing is performed twice or more for one unit screen information, so-called n-times drive (where n is a natural number of 2 or more).
- the solid-state light source emits light while avoiding at least the first writing period of the liquid crystal device, so that the projected image can be intermittently projected on a screen. For this reason, the tailing phenomenon, which is a drawback of the hold type, can be mitigated, and a smooth and high-quality moving image can be displayed.
- FIG. 23 is a diagram illustrating an operation of the multi-projection display according to the eighth embodiment.
- the multi-projection display 800 (not shown) according to the eighth embodiment is similar to the multi-projection display 600 according to the sixth embodiment.
- a solid-state light source controller 1 for controlling the amount of light emitted by the LED light sources 13 2R, 13 G, and 13 B for each of the liquid crystal devices 13 R, 13 G, and 13 B;
- the solid-state light source controller 178 controls the amount of light emitted from the LED light sources 132 R, 132 G, and 132 B for each projector unit 130. It has a function to control dynamically.
- the multi-projection display 800 according to the eighth embodiment has, as a liquid crystal device, liquid crystal devices 134R, 134G, and 134B that sequentially write an image for each of a plurality of screen areas in one frame. I have. Then, in the multi-projection display 800 according to the eighth embodiment, the solid-state light source control unit 178 controls the light emission of the LED light sources 132 R, 132 G, and 132 B in one frame.
- the liquid crystal devices 134 R, 134 G, and 134 B have a function of avoiding writing periods of images.
- FIG. 24 is a diagram showing a configuration of the multi-projection display according to the ninth embodiment.
- the multi-projection display 900 according to the ninth embodiment is a front projection type multi-projection display, as shown in FIG.
- FIG. 25 is a diagram showing a configuration of the multi-projection display according to the tenth embodiment.
- FIG. 25 (a) is a cross-sectional view as viewed from the side, and
- FIG. 25 (b) is a front view.
- the imaging device is connected to the multi-projection display 10.
- a transmissive liquid crystal device is used as the electro-optic modulator, but the present invention is not limited to this. Instead of a transmissive liquid crystal device, a reflective liquid crystal device or a micromirror light modulator can be used.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04792628A EP1677528A4 (en) | 2003-10-15 | 2004-10-13 | MULTI-PROJECTION DISPLAY SYSTEM |
JP2005514687A JP4345745B2 (ja) | 2003-10-15 | 2004-10-13 | マルチプロジェクションディスプレイ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003355250 | 2003-10-15 | ||
JP2003-355250 | 2003-10-15 |
Publications (1)
Publication Number | Publication Date |
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WO2005036874A1 true WO2005036874A1 (ja) | 2005-04-21 |
Family
ID=34431203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/015462 WO2005036874A1 (ja) | 2003-10-15 | 2004-10-13 | マルチプロジェクションディスプレイ |
Country Status (6)
Country | Link |
---|---|
US (2) | US20050110959A1 (ja) |
EP (1) | EP1677528A4 (ja) |
JP (1) | JP4345745B2 (ja) |
KR (1) | KR100860186B1 (ja) |
CN (1) | CN100490512C (ja) |
WO (1) | WO2005036874A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
KR20060087597A (ko) | 2006-08-02 |
JP4345745B2 (ja) | 2009-10-14 |
CN100490512C (zh) | 2009-05-20 |
US7926957B2 (en) | 2011-04-19 |
US20090279001A1 (en) | 2009-11-12 |
EP1677528A1 (en) | 2006-07-05 |
US20050110959A1 (en) | 2005-05-26 |
CN1868208A (zh) | 2006-11-22 |
KR100860186B1 (ko) | 2008-09-24 |
JPWO2005036874A1 (ja) | 2006-12-28 |
EP1677528A4 (en) | 2008-03-26 |
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