Vertical barrier fresnel lens array for infrared motion detector

Details Vertical barrier fresnel lens array for infrared motion detector Vertical barrier fresnel lens array for infrared motion detector

1989-02-27

1991-03-12

Lucas, Susan J.

Lighting

Light fixture

Element or attachment

D10121

Patent

active

D03154246

REFERENCES:
patent: 3740119 (1973-06-01), Sakurai et al.
patent: 4011857 (1977-03-01), Rice
Corning "Lighting Glassware for Architecture" catalog, .COPYRGT.1963, p. 2, Curved Lens Panel #65.

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