Optical systems employing anamorphic beams and diffraction gratings
US6728488B1 · kind B1 · utility
6Cited by
2References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/1086
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device includes: a collimator; at least one anamorphic pair of prisms optically coupled to the collimator; a diffraction grating optically coupled to the at least one anamorphic pair of prisms at a side opposite to the collimator; and a focusing lens optically coupled to the diffraction grating. The anamorphic pair of prisms permits light incident upon the diffraction grating to be relatively narrow in a dimension perpendicular to the dispersive direction of the grating so that the grating can produce high spectral resolution while preserving compact system size and simplicity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.