Patent ID: 6515785
Filing Date: 2003-02-04
Classification: G02B,G02F,Y10S

Abstract:
A display apparatus, comprising:a light modulating layer having a first surface; a light cavity for providing light to the light modulating layer; a light guide disposed to receive the light from the light cavity and output the light at a low angle relative to the first surface of the light modulating layer; a turning lens disposed to receive the low angle light output from the light guide and redirect the light toward the light modulating layer; a diffusely reflecting polarizer disposed between the turning lens and the light modulating layer for receiving the redirected light and transmitting a component of the redirected light having a first polarization toward the light modulating layer and diffusely reflecting a component of the redirected light having a second polarization different than the first polarization; wherein the turning lens comprises a structured surface facing the light guide.