Optical device with variably shaped optical surface and a method for varying the focal length
US4783155A · kind A · utility
78Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1984 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | May 3, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/0825
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device having a variable optical surface is given by the combination of an elastic body and a relatively rigid member having an opening and disposed to contact the elastic body to expose a part of the surface of the elastic body. The exposed surface part forms a variable optical surface, the shape of which is changed by deforming the elastic body to vary the focal length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.