Surface light source apparatus
US7771100B2 · kind B2 · utility
13Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Jan 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surface light source apparatus including a point light source, a light guide plate which spreads light introduced from the point light source into a planar shape to output the light from a light outgoing plane, and a light blocking member which covers parts of the point light source and the light outgoing plane of the light guide plate. A gap shielding member is projected toward the light outgoing plane from a surface on a side facing the light outgoing plane of the light blocking member. At least a portion facing the light outgoing plane in the gap shielding member is made of a material having a light blocking property.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.