Short pulse laser protection fly's eye lens
US6377403B1 · kind B1 · utility
8Cited by
7References
9Claims
0Family size
Inventor
Key dates
| Filing date | Sep 7, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Sep 7, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens array (7) has a plurality of frusto-spherical convex lenses (14, 15), formed in an optical entry surface (8) and an optical exit surface (9), focusing light rays (18, 19) near the center between each lens pair (14a, 15a) in an area (20) where the laser energy is focused sufficiently to induce vaporization resulting in aerosol breakdown which will absorb 99% or more of the laser energy, and thereby protect high gains optical equipment or eyes from optical damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.