Daytime and nighttime stellar sensor with active polarizer
US10302433B2 · kind B2 · utility
0Cited by
7References
10Claims
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Assignee
Inventor
Key dates
| Filing date | Jan 20, 2016 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | May 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a daytime and nighttime stellar sensor (1), comprising: at least one video camera (2) suitable for taking images of stars (3) in the sky; and a control unit (4), characterized in that it furthermore comprises: a polarizer (5), the control unit (4) being configured: to obtain an estimation of a direction of polarization of the polarized light received from the sky by the video camera (2); and to control the orientation of the polarizer (5) so that said polarizer (5) filters polarized light from the sky directed toward the video camera (2) and having said polarization direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.