Optical system capable of continuously varying the diameter of a beam spot
US4353617A · kind A · utility
26Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Nov 18, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system having a light source portion, a light receiving medium receiving the light beam from the light source portion, and a light condensing optical system for condensing the light beam from the light source portion as a beam spot on the light receiving medium, the light condensing optical system having provided therein an area in which the light beam becomes a parallel beam, said area having disposed therein an afocal zoom lens, whereby the diameter of the beam spot can be continuously varied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.