Title:
面光源装置及び当該装置を用いた機器
Document Type and Number:
Japanese Patent JP4674448
Kind Code:
B2
Abstract:
Two light sources 33A and 33B are disposed on a light entrance surface side of a light guiding plate 32. Deflection pattern elements 53A and 53B are disposed concentrically around a middle point Q between the light sources 33A and 33B. One deflection pattern element 53A is disposed in such a fashion that, in plan view, a direction of a normal to a light reflection surface thereof is parallel to a direction connecting the deflection pattern element 53A and the corresponding light source 33A. Also, the other deflection pattern element 53B is disposed in such a fashion that, in plan view, a direction of a normal to a light reflection surface thereof is parallel to a direction connecting the deflection pattern element 53B and the corresponding light source 33B. With such constitution, brightness of a surface light source device is improved.
Inventors:
Kazuhide Hirota
Masayuki Shinohara
Masayuki Shinohara
Application Number:
JP2004175965A
Publication Date:
April 20, 2011
Filing Date:
June 14, 2004
Export Citation:
Assignee:
OMRON Corporation
International Classes:
F21S2/00; G02B6/00; F21V8/00; G02B5/02; G02F1/1335; G02F1/13357; F21Y101/02
Domestic Patent References:
| JP2002062435A | ||||
| JP2003270446A | ||||
| JP2003330021A |
Attorney, Agent or Firm:
Masafusa Nakano