Device for generating a carrier in an interferogram
US7609384B2 · kind B2 · utility
3Cited by
9References
10Claims
0Family size
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Key dates
| Filing date | Mar 10, 2004 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2001/0471
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for generating a carrier in an interferogram in interferometry device either of the “real-time holographic interferometry” type or of the “double-exposure holographic interferometry” type, including recording a first wave front on a hologram, the first wave front coming from an object; generating a second wave front, in which two wave fronts are superimposed orthogonally polarizing said first and second wave fronts, either naturally or by a modification stage; and passing the orthogonally polarized two wave fronts through a birefringent crystal, a polarizer and a detector to make the two wave fronts interfere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.