Variable acousto-optic spectrum projector and method of operation
US6188507A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Mar 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/055
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variable acousto-optic spectrum projector is disclosed. The invention may include a radiation source, an entrance slit, a lens or mirror, a Bragg cell, an arbitrary function generator for driving a transducer of the Bragg cell, another lens or mirror, an exit slit, and a collimating lens. In a first embodiment of the invention, the Bragg cell comprises a Tl.sub.3 AsSe.sub.3 crystal and emits light in the 7 to 11 .mu.m range (long-wave infrared) with a spectral resolution of between 4.5 and 7 cm.sup.-1. In a second embodiment of the invention, the Bragg cell comprises a TeO.sub.2 crystal and emits light in the 420 to 720 nm range (visible) with a spectral resolution of between 50 and 80 cm.sup.-1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.