Light regulator and surface light source device
US6104854A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light regulator and a surface light source device employing the light regulator. For liquid-crystal display applications, the surface light source device can effectively prevent degradation in the quality of the emitted light and can reliably provide the required directivity correction. The light regulator is formed by laminatedly arranging a light scattering surface between first and second sheet-like members. The two sheet-like members mutually differ in shape, material and refractive index. Scattering means arranged between the first and second sheet-like members prevents Newton's rings due to spaces between the two sheet-like members from occurring. A light diffusion sheet may be disposed between the first and second sheet-like members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.