Tunable wavelength filter with invariant transmission and reflection beam angles
US6943938B1 · kind B1 · utility
11Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2002 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Jan 30, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/007
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improved designs of optical devices for processing optical signals with own or more specified wavelengths are disclosed. According to embodiment, a filter mirror assembly appears an “L” shape and provides a filtering function as well as a reflecting function. The filter mirror assembly is so mounted that a rotation thereof will not alter the optical path the beam positions of signals resulted from the filter mirror assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.