Optical block in smoke detectors

Details Optical block in smoke detectors Optical block in smoke detectors

1983-08-22

1986-04-22

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, G01N 1506

Patent

active

045844852

ABSTRACT:
An optical block for the exciter lamp and photocell includes a base with a first seat holding the lamp on a first optical axis and a second seat holding the cell on an intersecting optical axis. A cover with two light passages along the axes has a socket into which the base snap fits to confine the lamp and cell in their seats.

REFERENCES:
patent: 4129383 (1978-12-01), Malinowski
patent: 4206366 (1980-06-01), Marsocci et al.
patent: 4315158 (1982-02-01), Kakigi et al.
patent: 4459054 (1984-07-01), Kohr

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