Liquid prism device
US4953956A · kind A · utility
21Cited by
7References
13Claims
0Family size
Inventor
Key dates
| Filing date | Jun 10, 1988 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | Jun 10, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device including a fluid filled prism that has flexible side wall portions to provide a variable lens system in conjunction with the prism. The device has translucent side walls formed in a trough shape with an open top side for conveniently changing the fluid in the prism body and thoroughly cleaning the interior side walls of the prism. The side walls of the prism are flexible through a range of spacings to provide a lens effect variation from concave to convex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.