Non-perverting mirror
US4116540A · kind A · utility
12Cited by
2References
20Claims
0Family size
Inventor
Key dates
| Filing date | Jun 25, 1976 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jun 25, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mirror for providing non-perverted images of an object comprising a reflecting surface having a concave and convex intersecting region such as that formed by an inner section of a torus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.