System of photodetection and associated process for analyzing a luminous flux
US5889586A · kind A · utility
0Cited by
9References
9Claims
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Key dates
| Filing date | Mar 4, 1997 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Mar 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A photodetection system that analyzes a luminous flux (15) received on a line (10). The photodetection system includes an opaque mask (4) provided with at least one aperture (6), placed in the vicinity of the line, driver (7) designed to rotate the mask, detector (8, 9) of an angular position of reference of the mask, a field lens (12) concentrating the luminous flux (16) crossing the line onto a photodetector (1), and a processing unit (3) connected to the photodetector, for analyzing the luminous flux to yield values for several points on the line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.