Patent ID: 9285669
Filing Date: 2016-03-15
CPC Classification: G02B,G03B

Claim Text:
1. A reflection screen adapted to reflect image light projected from an image source to display an image in a viewable manner, the reflection screen comprising: a lens layer provided on a back side thereof with a Fresnel lens shape having an array of a plurality of unit lenses provided on the back side, the unit lenses each having a lens surface and a non-lens surface and being protuberant toward the back side; a reflection layer adapted to reflect light, the reflection layer formed at least on the lens surfaces of the unit lenses; and a surface lens layer disposed on the reflection screen on the side of the image source, the surface lens layer having a lenticular lens shape provided on the image source side, the lenticular lens shape provided at an image-source-side surface thereof with a plurality of unit surface lenses each protuberant toward the image source side, the unit surface lenses being arrayed in a screen left-right direction of the reflection screen, with their longitudinal direction set in the screen up-down direction of the reflection screen; wherein the Fresnel lens shape has an optical center located outside of a screen of the reflection screen, wherein the unit surface lenses are each so shaped that the width thereof in the array direction is not less than the height thereof, and wherein the unit surface lens is so configured that,