Graded-refractive-index optical plastic material and method for its production
US6590036B2 · kind B2 · utility
6Cited by
10References
8Claims
0Family size
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Key dates
| Filing date | Jan 16, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | May 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02033
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method for its production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.