Optical beam expander
US5574601A · kind A · utility
14Cited by
17References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1994 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Oct 14, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0911
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A beam expander suitable for use with laser machining apparatus comprises a convex paraboloidal surface 7 and a concave paraboloidal surface 8 formed from a single metal element 10. The expander has an optional zoom facility provided by a plane mirror 12, moveable along an input-output axis, for altering the position of an incident beam on the convex surface 7 thereby altering the magnification of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.