Optical beam profile tranforming element
US5175788A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1991 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Apr 2, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/1228
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical beam profile transforming element which is a monolith solid element with a low loss is provided by placing at least two parallel plastic wave guide layers in contact with each other, each of the at least two parallel plastic wave guide layers having a refractive index gradually varying in the direction of light propagation so that the at least two parallel plastic wave guide layers as a whole transform a profile of an optical beam in the direction vertical to the layers. The variation of the refractive index can be obtained by varying a concentration of a dopant in a matrix, and the variation of the concentration of a dopant in a matrix can be obtained by varying an irradiation amount of a combination of a matrix and a dopant monomer with an ultra-violet ray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.