Title:
多面微小プリズム列を採用した照射装置
Document Type and Number:
Japanese Patent JP3532212
Kind Code:
B2
Abstract:
An optical illumination system comprising a waveguide (16) that accepts light generated by a light source and transmits the light via total internal reflection. Attached on one face of the waveguide is an array of microprisms (28), with each microprism having a light input surface, a light output surface and at least one sidewall (33a) which is tilted at an angle rho from the direction normal to the surface of the waveguide (16) and further comprising at least two planar faces (31, 31a) such that light escapes from the waveguide (16), reflects off the tilted sidewalls (33a) and emerges from the microprism as a spatially directed light source. An array of microlenses may be positioned to accept the output of the microprisms (28) so that the light exiting from the microlenses is a substantially collimated light source. The optical illumination system is advantageous for any application that requires a non diffuse or substantially collimated light source that is both energy efficient and contained in a low profile assembly.
Inventors:
ジマーマン，スコット・ムーア
ビーソン，カール・ウエイン
ホー，ジャンプ
ビーソン，カール・ウエイン
ホー，ジャンプ
Application Number:
JP51276396A
Publication Date:
May 31, 2004
Filing Date:
October 10, 1995
Export Citation:
Assignee:
アライドシグナル・インコーポレーテッド
International Classes:
F21V5/02; F21V8/00; (IPC1-7): F21V8/00
Attorney, Agent or Firm:
社本 一夫 （外５名）