Method for producing a spatially stratified optical system for use in the micron and sub-micron wavelength regime
US6140632A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0087
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for producing a spatially stratified Optical System includes the steps of a) selecting a suitable, spatially stratified profile of index of refraction to achieve an optical system having a desired performance; b) selecting an atomic/molecular species having a suitable index of refraction in a desired operational wavelength band; c) forming sub-micron pellets of the species; and d) placing the pellets into a host material while controlling the density of the placement. The density is varied to achieve a local index of refraction value for the optical system in accordance with the selected stratified profile. The wavelength regime the optical system is designed for is much greater than the characteristic scale of stratification, which in turn is much greater than the spatial size of the pellets. The optical system is much greater than the wavelengths in the wavelength regime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.