Fiber optic bundle beam expander with image intensifier
US4076978A · kind A · utility
24Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Oct 14, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tapered or twisted fiber optic bundle having a unidirectional diffuser at an output face thereof defines a fiber optic bundle beam expander. In a viewing system, such a beam expander is provided at the output of an image intensifier tube for unidirectionally spreading rays of an amplified image in a horizontal direction for biocular viewing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.