Title:
OPTICAL PLATE
Document Type and Number:
Japanese Patent JP2008139847
Kind Code:
A
Abstract:
To provide an optical plate improving a utilization rate of light rays.
The optical plate comprises a first transparent layer, a second transparent layer and a diffusion layer, wherein the diffusion layer comprises a transparent resin disposed between the first transparent layer and the second transparent layer, and diffusion particles dispersed in the transparent resin. A plurality of spherical protrusions is formed on the surface of the first transparent layer. A plurality of conical frustum protrusions is formed on the surface of the second transparent layer.
Inventors:
HSU TUNG-MING
CHANG SHAO-HAN
CHANG SHAO-HAN
Application Number:
JP2007277977A
Publication Date:
June 19, 2008
Filing Date:
October 25, 2007
Export Citation:
Assignee:
HON HAI PREC IND CO LTD
International Classes:
G02B5/02; F21V5/00; F21V5/04; G02F1/1335; G02F1/13357
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro