Method for detecting turbulence conditions, using the interaction of a laser beam with a thin photochromic film, and device for implementing said method
US9684011B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Oct 23, 2013 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for assessing turbulence parameters of a medium comprises the following steps: the illumination, by a laser beam being propagated in said medium, of a film of photochromic organic material that can comprise molecules of azobenzene, or of spyropyrane, or of stilbene, or of coumarin, or of fulgide, said illumination creating a surface grating in said film comprising scratches, the deformations of which are a function of the turbulence parameters; a step of acquisition of images comprising individual areas of structures linked to said scratches, more or less reduced and representative of the turbulence parameters of said medium; a step of processing of said images that makes it possible to assess the turbulence parameters of said medium. A device is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.