Photoelastic modulator
US7768687B2 · kind B2 · utility
0Cited by
10References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2007 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Feb 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0131
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A photoelastic modulator, comprising a driving block and a driver transducer for perturbing said block in a predefined direction to establish a standing wave extending longitudinally in said block and hence perpendicularly to said predefined direction. The transducer is affixed to said block at two regions of the transducer mutually displaced in said predefined direction, to minimize the coupling of lateral perturbation perpendicular to the predefined direction. A recess or gap may be provided under the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.