Gradient index-type optical device and process for production thereof
US5032000A · kind A · utility
8Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Jan 26, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0087
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A gradient index-type optical device produced by the ion exchange process, comprising: a transparent dielectric body having a refractive index distribution, and a refractive index distribution-adjusting portion disposed on at least a part of the transparent dielectric body. Because of the presence of the refractive-index distribution, the ion-exchange speed therethrough is controlled to provide a controlled refractive index distribution in the transparent dielectric body. As a result, a gradient index-type optical device having a large refractive index factor (g value) without substantial increase in aberration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.