Polychromator
US4786174A · kind A · utility
4Cited by
2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1986 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Dec 16, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/1286
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a polychromator, the image plane or the focus line (28) is adapted optimumly to the plane of a detector (26), e.g. to a diode-array. At the same time, an optimum linear wavelength scale is obtained on the detector (26). To this end, an arrangement having a concave grating (14), and an imaging mirror (20) is provided. An optimizing method is described by which both curves can be optimized in converging steps by alternate variation of the distance b between concave grating (14) and mirror (20) and the asymmetry measure G' of the concave grating (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.