Optical filter tuning apparatus and an optical filtering method
US5193027A · kind A · utility
5Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1991 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Aug 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical filter tuning apparatus and filtering method uses an optical filter that reflects light of a predetermined wavelength which is dependent on the position of incidence of the light on the filter and a retroreflector moveable with respect to the filter and which reflects light from an optical source to the position of incidence and reflects light of the predetermined wavelength from the filter to an optical receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.