Title:
LIGHT GUIDE MEMBER
Document Type and Number:
Japanese Patent JP2012079674
Kind Code:
A
Abstract:
To provide a light guide member which has little luminance unevenness (hot spots) generated in the vicinity of a light-incident part and has a uniform luminance distribution in almost all regions of an emitting face even in case it is used in combination with a plurality of point light sources, and which can emit light of the small number of point light sources from a wide range.
The light guide member has a light-emitting face and at least one light-incident part, and at least that one light-incident part has a plurality of random recessed parts or projection parts.
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Inventors:
TAKADA YOSHIKI
Application Number:
JP2011018563A
Publication Date:
April 19, 2012
Filing Date:
January 31, 2011
Export Citation:
Assignee:
ASAHI KASEI CORP
International Classes:
F21S2/00; B60Q3/02; F21V8/00; G02F1/13357; F21Y101/02
Domestic Patent References:
| JP2009076442A | 2009-04-09 | |||
| JP2004111383A | 2004-04-08 | |||
| JP2002343122A | 2002-11-29 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
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