Reflective Schmidt system with nonrotationally symmetric corrector
US4576452A · kind A · utility
7Cited by
1References
9Claims
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Key dates
| Filing date | Jun 2, 1983 |
| Grant date | Mar 18, 1986 |
| Priority date | — |
| Expiry date | Jun 2, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B17/0621
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Wide field of view correction for wide spectral band imaging systems is achieved in reflective versions of the Schmidt and Schmidt-Cassegrain systems by the use of a fold mirror which also serves as a corrector plate. A method for fabricating the corrector plate is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.