Patterned coated dichroic filter
US7648808B2 · kind B2 · utility
28Cited by
1References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2004 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Oct 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/11
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A combination patterned reflective dichroic filter and optical coating, and method of making the same, is disclosed by starting with a filter substrate, laying down a pattern of dichroic filter material, but stopping short of completing the layers required for the spectral characteristics of the filter. The spectral characteristics are completed by adding a blanket coating of a material such as an anti-reflective material. In an alternative embodiment the blanket coating can be applied prior to addition of the dichroic filter material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.