Quadrant light detector

Details Quadrant light detector Quadrant light detector

G - Physics

01

B

G01B 11/26 (2006.01) G01S 3/783 (2006.01) G01S 5/16 (2006.01) G01S 7/481 (2006.01) G01S 17/42 (2006.01) G01S 17/66 (2006.01)

Patent

CA 2244157

A quadrant light detector (10) that employs the concept of constructed occlusion to improve its accuracy and by incorporating baffles (28) within the design to improve its detection response to incoming light (11) having an incidence angle near the horizon, and to divide a diffusely reflective cavity (16) into quadrants. The quadrant detector (10) is able to determine the direction, or azimuth and elevation, to the light source anywhere within a sector of a hemisphere or a sphere.

La présente invention concerne un photodétecteur quatre quadrants (10) fonctionnant selon un principe d'occultation structurelle, ce qui permet d'en améliorer la précision. La structure de ce détecteur comporte des enceintes (28) qui permettant d'améliorer sa réponse de détection pour la lumière pénétrante (11) dont l'angle d'incidence est proche de l'horizon. Ces enceintes assurent la division en quatre quadrants d'une cavité de réflexion diffuse (10). Ce détecteur quatre quadrants (10) est capable de déterminer l'azimut et l'élévation de la source lumineuse n'importe où dans les limites d'un secteur d'hémisphère ou de sphère.

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