Optical element having the function of changing the cross-sectional intensity distribution of a light beam
US4641920A · kind A · utility
5Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1984 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Mar 7, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/145
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical element having the function of changing the cross-sectional intensity distribution of an incident light beam is comprised of a plurality of prisms. The optical element spatially combines a light beam having been amplitude-divided by an amplitude-dividing mirror provided on the joined surface of the prisms and a light beam having been totally reflected by a total-reflection mirror provided on the outermost one of the prisms to thereby change the cross-sectional intensity distribution of the light beam entering the optical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.