Panoramic lens
US4484801A · kind A · utility
37Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Sep 20, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A panoramic lens grouping utilizes a number of negative and positive power enses to provide 360.degree. photography and projection capabilities. The lens grouping uses a hyperbolic mirror as its input or output, in the photographic or projection mode, respectively. The lenses of the group are selected to reduce the Petzval curvature introduced by the hyperbolic mirror. The lenses are arranged such that the negative power lenses are flanked by the positive power lenses. Provision is made for the use of an internal shutter in the spacing between lenses in the lens group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.