Multicolor interference filters with side surfaces to prevent entry of undesirable light
US5073008A · kind A · utility
6Cited by
14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1991 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Mar 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/201
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An interference filter includes a multi-coated interference filter layer of dielectric substances deposited on a transparent base plate and extinction members applied to side surfaces of the transparent base plate. A multi-color interference filter has at least two such interference filters having different spectral characteristics closely connected to each other through the extinction members and cemented to a transparent base plate which is formed with a multi-coated anti-reflection layer deposited on one surface opposite to a surface to which the interference filter is cemented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.