Optical system for image rotation
US6259563A · kind A · utility
6Cited by
4References
18Claims
0Family size
Inventor
Key dates
| Filing date | Sep 14, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system for image rotation comprises two Pechan prisms (8, 9) located on an optical axis (4) and a lens system located on the same optical axis. The two Pechan prisms (8, 9) can be rotated relative to each other around the optical axis (4). They are located next to each other without the interposition of lenses. The lens system comprises two lens subsystems (6, 7) that are located one on each side of the pair of Pechan prisms, and between which there exists a telecentric beam path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.