Spectrograph
US4087183A · kind A · utility
13Cited by
2References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1976 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Mar 25, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/1838
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrograph for use in analyzing an extended spectral field comprising a dispersive system consisting solely of one or more concave holographic gratings, each grating being specified so that the diffraction spectrum is formed in a plane. Where a plurality of gratings are provided they are formed on a common concave support and are specified so that the planes of the diffraction spectra formed thereby are offset and in total cover the wavelengths of the total spectral field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.