Method and apparatus for detecting an object within a dynamic scattering media
US6754518B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1999 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Sep 17, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0073
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting an object located within a dynamic scattering media, includes i) directing a continuous coherent light wave of predetermined wavelength into the media; ii) detecting dynamically scattered light emerging from the media; iii) correlating the detected light photons in the time or frequency domain; iv) determining the presence of an object from analysis of differences between the correlation and a correlation which would arise from photons scattered by the media only; and v) determining the approximate position of the object within the media from the analysis of the correlation and knowledge of the mean transport path of the light wave of predetermined wavelength within the media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.