Projection screen, and projection type display system
AssigneeOlympus Corporation
InventorTakayoshi Togino
Life of this patent
Estimating the term…
Abstract
The invention relates to a projection screen and a projection type display device, wherein projection light projected through a single projector is intensively diffused into at least two areas of view, each having a relatively narrow extent, so that the same image can be simultaneously viewed with both eyes or by at least two viewers. The projection screen 1 comprises a plurality of Fresnel concave mirrors 2L and 2R superposed on the same substrate in a mutually decentered fashion, and a diffusing plate is located on the side of the projection screen 1 on which projection light is incident or at which projection light is reflected.
Claims23
A projection screen, comprising a substrate wherein a plurality of Fresnel surfaces are superposed on the same surface thereof in a mutually decentered fashion.
Dependencies are inferred from the claim text.