Patent ID: 6111995
Filing Date: 2000-08-29
Classification: H03K

Abstract:
A multi-optical-path photoelectric switch comprising:a light emtting portion having plural light emitting units, each including,a predetermined number of light emitting devices for emitting lights,a first case having a male connector disposed at one end, a female connector diposed at the other end, a surface between both ends made of a light transmissive resin, the surface through which the lights from the light emitting devices pass,a fixing frame holding the first case, and having the substantialy same length as the first case, anda second case accommodating a portion of the fixing frame while a residual portion of the fixing frrame is projected therefrom, wherein the light emitting units are mechanically and electrically connected to one another by inserting the portion of the fixing frame thus projected of either of adjacent light emitting units into the second case of the other adjacent light emitting unit; anda light receiving portion having plural light receiving units, each including,the same number of light receiving devices as the light emitting devices,a first case having a male connector disposed at one end, a female connector diposed at the other end, a surface between both ends made of a light transmissive resin, the surface through which the lights pass to the light receiving devices,a fixing frame holding the first case, and having the substantialy same length as the first case, anda second case accommodating a portion of the fixing frame while a residual portion of the fixing frrame is projected therefrom, wherein the light receiving units are mechanically and electrically connected to one another by inserting the portion of the fixing frame thus projected of either of adjacent light receiving units into the second case of the other adjacent light receiving unit.