Safety device for controlling a light signal generator based on

Details Safety device for controlling a light signal generator based on Safety device for controlling a light signal generator based on

1983-11-03

1986-07-01

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250227, G01V 904

Patent

active

045981990

ABSTRACT:
A safety device for a light signal generator only activates a laser beam emerging from an optical fiber connector when an optical fiber is connected. By inserting a plug of the optical fiber into the connector of the light signal generator a photodetecting circuit is caused to provide a control signal, which activates the laser.

REFERENCES:
patent: 3934965 (1976-01-01), Wiseman et al.
patent: 3936878 (1976-02-01), Chrysler
patent: 4295043 (1981-10-01), Eibner et al.
patent: 4373471 (1983-02-01), Coulbourn
patent: 4406530 (1983-09-01), Hasegawa et al.
patent: 4449043 (1984-05-01), Husbands
patent: 4502823 (1985-03-01), Wronski et al.

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