Occupancy detector

Details Occupancy detector Occupancy detector

1987-12-01

1989-07-11

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250353, G01J 504

Patent

active

048475017

ABSTRACT:
An occupancy sensor device has a housing with a neck entry affording a light path to a recessed sensor. The interior of the light path has properties of reflection and/or refraction to improve effective field of view of the sensor. A tubular member as the neck can be angularly adjustable for selective electrical connection to a circuit board carrying the sensor and contacts at its end. That board can be clamped in slots in an inner part of the housing. Fitting to a barrier can be aided by clenching action of a spring member apertured to group an outer housing part when relaxed.

REFERENCES:
patent: 4087688 (1978-05-01), Keller
patent: 4670655 (1987-06-01), Zierhut
patent: 4716294 (1987-12-01), Pettke et al.

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