Measuring arrangement for examining a subject with visible, NIR or IR light
US5309907A · kind A · utility
62Cited by
2References
80Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Aug 26, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for examining tissue in vivo by means of the optical properties of the tissue generates a measuring chirp signal which is introduced into a tissue-containing subject as a coherent optical chirp signal. The parts of the measuring chirp signal emerging from the subject are superimposed with a reference chirp signal to form a superposition signal that is supplied to a filter that only allows those parts of the superposition signal to pass that represent those parts of the measuring chirp signal emerging from the subject which have traversed a defined, optical path length within the subject.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.