Optical filtering apparatus and method
US6525879B1 · kind B1 · utility
3Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 2000 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | May 25, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical filtering apparatus and method, wherein at least one polarizer is located in the path of radiation passing through a birefringent medium. The invention can be used to process complementary bands of spatial frequency spectra. The invention can be practiced using a polarizing beam splitter. The invention can also be practiced using an optical storage layer forming part of the birefringent medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.