Optical sensor unit with sealed optical element and cable connec

Details Optical sensor unit with sealed optical element and cable connec Optical sensor unit with sealed optical element and cable connec

1989-05-25

1991-05-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Housings

H01J 502

Patent

active

050139118

ABSTRACT:
An optical sensor unit for detecting a predetermined object to be detected comprises an optical element, a connector for connection to a wiring cable of an external equipment, and a printed circuit board having a predetermined printed wiring thereon for connecting the optical element to the connector while the optical element is completely sealed by the printed circuit board at the lower end thereof and by the case at the upper portion and sides thereof whereby reduction of quantity of the light emitted from the optical element due to collection of dust can be prevented and whereby the attachment and detachment operations of the optical sensor unit can be effected with ease.

REFERENCES:
patent: 4127328 (1978-11-01), Gorgone et al.
patent: 4207464 (1980-06-01), Fukuyama et al.
patent: 4211923 (1980-07-01), Fukuyama et al.
patent: 4584485 (1986-04-01), Powers et al.
patent: 4653834 (1987-03-01), Norden
patent: 4816673 (1989-03-01), Segerson et al.
patent: 4841144 (1989-06-01), Goi et al.

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