Optical filter
US5258872A · kind A · utility
12Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Oct 1, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/289
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A high reflection optical filter is described which comprises a film of a dielectric, inorganic or organic or other suitable material deposited on a suitable optically transparent substrate, the film having between a surface thereof exposed to incident radiation and an interface with the substrate a sinusoidal refractive index profile with selected number of periods and selected phase at the exposed surface in single band configurations, and superimposed multiple sinusoidal refractive index profiles with selected phase alignment of the superimposed profiles at the exposed surface in multi-band configurations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.