Optical sensor

Details Optical sensor Optical sensor

G - Physics

08

C

340/136, 340/155

G08C 21/00 (2006.01)

Patent

CA 2002040

ABSTRACT OPTICAL SENSOR A direction-of-arrival optical sensor comprises a cube 4 having its four upstanding surfaces 6 mirrored as reflectors. The cube rests on a semiconductive substrate 2 having four square photodetectors 8 extending from the base edge of each mirrored surface 6. The ratio of the amount of light falling on each of the two opposed pairs of photodetectors from a light source (the ratio of the photocurrents) is measured. This measurement can be used to compute the direction of the light source with respect to the sensor.

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