Optical selector device using a Fizeau wedge for reflection
US4468775A · kind A · utility
6Cited by
0References
19Claims
0Family size
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Key dates
| Filing date | Oct 9, 1981 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Oct 9, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
When a sufficient reflectivity and a low absorption power are given to its dihedron of reflective surfaces, a Fizeau wedge can serve as a directional optical selector which supplies a narrow band of wavelengths in a first direction and the remainder of the incident wavelengths in another direction. A laser with colorant COL can then be defined by the Fizeau wedge CF and an output mirror M.sub.1, with two diaphragms D interposed. Tuning is variable by relocation of the Fizeau wedge in its plane and relates either to a narrow line or a narrow gap in a wide band. Several lines can also be tuned separately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.