Spectrographic astigmatism correction system
US5452085A · kind A · utility
10Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Jan 27, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/0291
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical input system for correcting astigmatism introduced by off-axis reflectors in a spectrograph includes an aspheric mirror producing a correcting factor which compensates for the spectrograph distortions and enables the spectrograph to produce multiple astigmatic light images at its two-dimensional charge-coupled-device output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.