Graded-refractive-index optical plastic material of a fluoropolymer containing a material in a concentration gradient therein
US6271312A · kind A · utility
13Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
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.