Off-axial three-mirror system
US8975571B2 · kind B2 · utility
4Cited by
4References
19Claims
0Family size
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Key dates
| Filing date | Dec 12, 2012 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Sep 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B17/0642
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An off-axial three-mirror system includes a primary mirror, a secondary mirror, a tertiary mirror, and an image sensor. The secondary mirror is located on a reflective optical path of the primary mirror. The tertiary mirror is located on a reflective optical path of the secondary mirror. The image sensor is located on a reflecting optical path of the tertiary mirror. The primary mirror and the tertiary mirror are formed as one piece. The surface type of both the primary mirror and the tertiary mirror is a freeform surface. The primary mirror is a convex mirror, and the tertiary mirror is a concave mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.