Process for the production of optical elements
US4877717A · kind A · utility
58Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1987 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Jul 24, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for the production of optical elements which comprises forming on a substrate a light-sensitive film containing at least a photoreactive compound, and selectively exposing the film to radiation to cause migration of the unreacted compound from an unexposed area to an exposed area by the exposure. The present process is particularly useful in the low-cost mass-production of various micronized optical elements such as plastic microlenses and arrays thereof, optical waveguides, diffraction gratings, and holograms, for example. An optical device comprising the optical elements of the present invention is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.