Dispersive optical device
US6278534A · kind A · utility
21Cited by
4References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H1/0248
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact, preferably monolithic optical element converts an incident beam of light into a dispersed exit beam. A transmissive optical grating is supported between two reflective surfaces such that a beam is reflected to pass through the same grating at least twice to form the exit beam. In the preferred embodiment the grating is a volume hologram cemented between two optically transmissive substrates which include outwardly oriented surfaces that are parallel to one another and to the grating, and the internal reflections occur at these surfaces. Mirrors may also be used. A preferred method of grating formation is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.