Optical interrogation system and method
US12169173B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2021 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | Dec 5, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The optical interrogation technique can use an optical prism having two opposite sides including a sample side and a refraction side, the sample side having a plurality of interrogation areas; a source assembly generating a collimated field of illumination directed towards the refraction side; a screen disposed in a screen plane intersecting the field of illumination and shielding the refraction side from the field of illumination, the screen having an aperture allowing a portion of the field of illumination to reach and be refracted by the refraction side, be totally internally reflected at one of said interrogation areas of the sample side, thereby generating a signal, the signal refracted back through the aperture, the screen being movable within the screen plane to shift the aperture and expose different portions of the field of illumination to corresponding ones of the interrogation areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.