Compact catadioptric lenses and lens systems with improved image quality and methods of using same
US9933604B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jul 24, 2017 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jul 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B17/0856
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A catadioptric telephoto lens system which: receives incident light rays in a parallel path of both catoptrics and dioptrics, where some of the incident light rays go through a reflective path involving mirrors/reflective surfaces and others of the incident light rays go through a refractive path involving lenses; or receives incident light rays in a serial path of catoptrics and dioptrics, where all the incident light rays initially go through a reflective path involving mirrors/reflective surfaces and then go through a refractive path involving lenses. The system eliminates the black pupil/iris blur disadvantages associated with conventional telescopic lens systems and may be provided in a very compact form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.