Screen and image projector using the screen
AssigneeNaofumi Yamauchi
InventorNaofumi Yamauchi
Life of this patent
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Abstract
A projector screen having a simple configuration, which provides a wide field of view angle and can be used for both transmission and reflection projection is achieved. A screen according to the present invention is provided with a directional scattering layer that scatters incoming light within a specific angular range and transmits incoming light outside the specific angular range. Further, an image projection system can be made by combining the screen with an image projector that projects an image onto the screen.
Claims17
A screen that displays a projected optical image, comprising:
- a directional scattering layer that scatters incoming light within a specific incoming angle range and transmits incoming light outside the specific incoming angle range, wherein the directional scattering layer is a column-shaped lens sheet that functions to guide light in a thickness direction thereof and comprises a plurality of column structures arranged within a plane of the column-shaped lens sheet, the column structures each comprising a center region that extends continuously in the thickness direction of the lens sheet and that has a higher index of refraction than a peripheral region thereof around the center region.
A screen that displays a projected optical image, comprising:
- a directional scattering layer that scatters incoming light within a specific incoming angle range and transmits incoming light outside the specific incoming angle range, wherein the directional scattering layer is a perforated transparent resin sheet having through holes formed in the thickness direction of the resin sheet.
A screen that displays a projected optical image, comprising:
- a directional scattering layer that scatters incoming light within a specific incoming angle range and transmits incoming light outside the specific incoming angle range, wherein the directional scattering layer is a column-shaped lens sheet that functions to guide light in the thickness direction thereof and comprises a plurality of column structures arranged within a plane of the column-shaped lens sheet, the column structures each comprising a region of liquid crystal polymer having liquid crystal molecules arranged therein and extending continuously in the thickness direction of the lens sheet.
A screen that displays a projected optical image, comprising:
- a directional scattering layer that scatters incoming light within a specific incoming angle range and transmits incoming light outside the specific incoming angle range, wherein the directional scattering layer is a sheet that functions to guide light in a thickness direction thereof and comprises a plurality of column-shaped lenses arranged within a plane of the sheet, the column-shaped lenses each comprising a center region that extends continuously in the thickness direction of the lens sheet and that has a higher index of refraction than a peripheral region thereof around the center region.
An image projector system comprising:
- a screen having a directional scattering layer that and transmits incoming light outside the specific incoming scatters incoming light within a specific incoming angle range angle range, wherein the directional scattering layer is a column-shaped lens sheet that functions to guide light in the thickness direction thereof and comprises a plurality of column structures arranged within a plane of the column-shaped lens sheet, the column structures each comprising a center region that extends continuously in the thickness direction of the lens sheet and that has a higher index of refraction than a peripheral region thereof around the center region;
- and
- an optical image projector that projects an optical image onto the screen.
Dependencies are inferred from the claim text.