Unobscured two-mirror catadioptric optical system for a multispectral imaging apparatus
US10948702B2 · kind B2 · utility
1Cited by
15References
20Claims
0Family size
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Key dates
| Filing date | Jul 2, 2019 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Jul 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0983
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical system in which an aggressively compact reflective front end is combined with beam splitting elements and refractive relay optics to allow several imaging systems working in widely different wavelength bands to share a common aperture. The aggressively compact design results in significant field curvature at the uncorrected intermediate or virtual focus, which is corrected in the refractive relay optics for each band's imaging path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.