Multi-angle reflector for use in a backlight unit
US6767113B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2002 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Aug 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133605
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a multi-angle reflector for use in a backlight unit. The back light unit comprises a plurality of lamps, a multi-angle reflector and a diffuser. The multi-angle reflector comprises a plate and a plurality of reflecting protrusions. The plate has a top surface toward to the lamps. The reflecting protrusions are respectively disposed on the top surface of the plate. Each reflecting protrusion has a reflecting surface. The reflecting surfaces have a plurality of reflecting angles corresponding to the top surface of the plate so that the light from lamps are adapted to reflect to the diffuser according to the reflecting angles. Therefore, according to the invention, the reflecting angles of the reflecting surfaces on the reflecting protrusions can be adjusted so as to suit to various actual conditions. The lights are uniform and the utility of the lights is improved. Because the reflecting protrusions are small, the reflector can be made into a thin type. For the whole structure, the thickness of the backlight unit is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.