OPTICAL DIFFUSING SHEET, OPTICAL DEFLECTING SHEET, AND TRANSMISSION TYPE SCREEN
First Claim
1. An optical diffusing sheet for use in a transmission type screen that emits imaging light projected from an incident side to an emergent side, comprising:
- a highly rigid substrate layer with a light-transmissibility and a high rigidity; and
two or more layers laminated on the highly rigid substrate layer, the layers including at least a pair of anti-scattering layers disposed on opposite sides of the highly rigid substrate layer for preventing scattering of the high rigid substrate layer;
wherein at least one layer of the two or more layers includes an optical diffusing element that diffuses imaging light.
1 Assignment
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Accused Products
Abstract
An optical diffusing sheet is provided, which prevents deterioration in image quality which might result from warping of the sheets due to environmental changes, and is capable of, even if a substrate is broken by an accident, preventing scattering of pieces of the broken substrate. An optical diffusing sheet is used in a transmission type screen that emits imaging light projected from an incident side to an emergent side. The optical diffusing sheet includes a highly rigid substrate layer with a light-transmissibility and a high rigidity, and a plurality of layers laminated on the highly rigid substrate layer. The plurality of layers includes at least a pair of anti-scattering layers disposed on opposite sides of the highly rigid substrate layer for preventing scattering of the highly rigid substrate layer. At least one layer of the two or more layers includes an optical diffusing element that diffuses imaging light.
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Citations
23 Claims
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1. An optical diffusing sheet for use in a transmission type screen that emits imaging light projected from an incident side to an emergent side, comprising:
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a highly rigid substrate layer with a light-transmissibility and a high rigidity; and two or more layers laminated on the highly rigid substrate layer, the layers including at least a pair of anti-scattering layers disposed on opposite sides of the highly rigid substrate layer for preventing scattering of the high rigid substrate layer; wherein at least one layer of the two or more layers includes an optical diffusing element that diffuses imaging light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 20, 21, 22)
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10. An optical deflecting sheet for use in a transmission type screen that emits imaging light projected from an incident side to an emergent side, comprising:
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a highly rigid substrate layer with a light-transmissibility and a high rigidity; and two or more layers laminated on the highly rigid substrate layer, the layers including at least a pair of anti-scattering layers disposed on opposite sides of the highly rigid substrate layer for preventing scattering of the highly rigid substrate layer; wherein at least one layer of the two or more layers includes an optical deflecting element that deflects imaging light by refracting or reflecting the imaging light. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 23)
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Specification