Light transmitting and dispersing filter having low reflectance
US5563738A · kind A · utility
68Cited by
8References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1993 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Sep 3, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/625
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Multi-layer light filters provide optimized gain control, contrast, and ambient light rejection through the addition of optical layers to a basic refraction light filter. These additional layers allow adjustment of the gain, contrast, and ambient light rejection of light filters in a substantially independent manner, and can be combined to simultaneously optimize these optical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.