Imaging process and system for transillumination with photon frequency marking
US5174298A · kind A · utility
87Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1990 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Feb 27, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/178
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an imaging process and system by transillumination of a medium illuminated by transparency by a beam, an acoustic transducer emits an acoustic wave in the medium which interferes with the beam. The frequency of the light passing through the medium is then shifted from the value of the frequency of the acoustic wave. A collimating device whose object focus is located at the intersection of the acoustic wave and the light beam collects the light diffused by the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.