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Patent Searching and Data


Title:
LIGHT GUIDE
Document Type and Number:
Japanese Patent JPH09167514
Kind Code:
A
Abstract:

To attain expansion of the effective area of a light guide by providing to a surface a brim part protruded toward a light source direction so as to match an emission surface.

A brim part 3 protruded toward a light source 2 direction is provided to an emission surface 1a of an incident surface 1c so as to match the emission surface 1a, a light guide 1 to which frost processing 3a is applied is formed on the surface of the light source 2 side of the brim part 3. By providing the brim part 3 to which frost processing 3a is applied on the surface of the light source 2 side, the light of that part is scattered, the light quantity directly leaked from the emission surface 1a is reduced, and the generation of light non-uniformity is reduced.


Inventors:
SHIMIZU KOICHI
Application Number:
JP1995000347105
Publication Date:
June 24, 1997
Filing Date:
December 15, 1995
Export Citation:
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Assignee:
STANLEY ELECTRIC CO LTD
International Classes:
F21V8/00; (IPC1-7): F21V8/00
Attorney, Agent or Firm:
秋元 輝雄