Multi-optical-path photoelectric safety apparatus

Details Multi-optical-path photoelectric safety apparatus Multi-optical-path photoelectric safety apparatus

2005-12-27

2005-12-27

Porta, David (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C340S556000

Reexamination Certificate

active

06979814

ABSTRACT:
A multi-optical-path photoelectric safety apparatus is provided that has a light emitting unit, a light receiving unit and a control unit for controlling each optical path. A light block substance sensing function for a multi-optical-path light curtain is also provided to sense an object between the light emitting unit and the light receiving unit. A muting area setting unit is also provided that can be taught how to set an area for exerting a muting function. The muting function can be provided only in a partial area of the light curtain by using the muting area setting unit.

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