Light guide plate made of transparent resin, molding method thereof, insert block, mold assembly, and area light apparatus
US7377478B2 · kind B2 · utility
3Cited by
17References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2006 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Mar 8, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/81
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide plate which is made of a transparent resin and has a first main surface and a second main surface opposite to said first main surface, said first main surface having a surface portion provided with convex portions having a height of 5×10−7 m to 6×10−5 m each and a pitch of 5×10−7 m to 4×10−4 m, each convex portion having a tip portion, and the convex portions of at least 80% of the total convex portions having the tip portions having a radius of curvature of 2×10−6 m or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.