Composite sensor for door

Details Composite sensor for door Composite sensor for door

G - Physics

01

S

G01S 13/86 (2006.01) G01S 13/04 (2006.01) G01S 17/02 (2006.01) E05F 15/20 (2006.01)

Patent

CA 2456896

A radio-wave transmitter-receiver section (12) forms a radio-wave detection zone (16) for detecting an object at a location away from a door (4). A light emitter-receiver section (20) forms an optical detection zone (42) for detecting an object at a location along and closer to the door (4). The light emitter-receiver section (20) includes mirrors (28, 36) which are used to increase or decrease the depth dimension of the optical detection zone (42) in the direction perpendicular to the door (4).

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