Quadrant light detector
US5877490A · kind A · utility
85Cited by
22References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Aug 7, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A quadrant light detector that employs the concept of constructed occlusion to improve its accuracy and by incorporating baffles within the design to improve its detection response to incoming light having an incidence angle neat the horizon, and to divide a diffusely reflective cavity into quadrants. The quadrant detector is able to determine the direction, or azimuth and elevation, to the light source anywhere within a sector of a hemisphere or a sphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.