Methods of minimizing scattering and improving tissue sampling in non-invasive testing and imaging
US5672875A · kind A · utility
89Cited by
8References
50Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3137
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved method and apparatus for use in optical testing of concentration in samples has been developed. The apparatus restricts the solid angle of illumination and the solid angle of detection to eliminate a high proportion of the scattered radiation while allowing the ballistic radiation and the snake-like radiation to be transmitted. In samples which contain multiple scattering centers, this allows less correction for variations in effective pathlength and allows easier calibration of the apparatus. The use of polarized radiation as a means of minimizing scattered radiation in the sample is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.