Optical spectrum measuring device
US5767966A · kind A · utility
11Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Sep 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Light source 1 emits light composed of various wavelength components from an emission end 1a. An optical fiber 2 receives the light from one end portion 2a and emits the light from the other end portion 2b. A Czerny-Turner dispersion spectroscope is formed by this end portion 2b, concave mirrors 3 and 5, a diffraction grating 4, and an emission slit 6. A mask 9 restricts the aperture diameter, so as to remove light which has spread wider than the aperture diameter of the mask 9 from the light which has passed through the emission slit 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.