Rear surface projection type screen that diffracts and diffuses high luminance projection light from a projector including first and second polarizing plates
First Claim
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1. A rear projection image display apparatus comprising:
- a projector configured to project an image having a high luminance;
a transmission type screen including a first screen having a fibrous texture and configured to diffract light incident from the projector in accordance with a fiber roughness of the fibrous texture, and a second screen comprising diffusing particles in a vinyl chloride resin attached to the first screen on a side of the first screen opposite the projector and configured to diffuse light incident from the first screen and output the diffused light;
a first polarizing plate having a first polarization direction, the first polarizing plate disposed in front of an exit pupil of the projector and at a first distance from the transmission type screen; and
a second polarizing plate having a second polarizing direction that is substantially orthogonal to the first polarizing direction, the second polarizing plate being disposed near a rear surface side opposite to an irradiation surface of the transmission type screen and at a second distance from the transmission type screen, which is smaller than the first distance, whereinonly the first polarizing plate and the second polarizing plate are configured to polarize the image projected from the projector.
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Abstract
A rear projection image display apparatus that includes one or more projectors that project an image having a high luminance, a first screen having a fibrous texture and that diffracts light incident from the one or more projectors in accordance with a fiber roughness of the fibrous texture, and a second screen attached to the first screen on a side of the first screen opposite the one or more projectors and that diffuses light incident from the first screen and outputs the diffused light.
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Citations
14 Claims
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1. A rear projection image display apparatus comprising:
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a projector configured to project an image having a high luminance; a transmission type screen including a first screen having a fibrous texture and configured to diffract light incident from the projector in accordance with a fiber roughness of the fibrous texture, and a second screen comprising diffusing particles in a vinyl chloride resin attached to the first screen on a side of the first screen opposite the projector and configured to diffuse light incident from the first screen and output the diffused light; a first polarizing plate having a first polarization direction, the first polarizing plate disposed in front of an exit pupil of the projector and at a first distance from the transmission type screen; and a second polarizing plate having a second polarizing direction that is substantially orthogonal to the first polarizing direction, the second polarizing plate being disposed near a rear surface side opposite to an irradiation surface of the transmission type screen and at a second distance from the transmission type screen, which is smaller than the first distance, wherein only the first polarizing plate and the second polarizing plate are configured to polarize the image projected from the projector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification