Patent ID: 6774352
Filing Date: 2004-08-10
Classification: B66B,G01V

Abstract:
A multi-beam photoelectric sensor comprising:a light emitter having a plurality of light emitting elements aligned in equal intervals in the lengthwise direction of an elongate casing inside the elongate casing; a photo detector having a plurality of photo detector elements aligned in the same equal intervals as those of the light emitting elements in the lengthwise direction of an elongate casing inside the elongate casing; a cable connected to at least one of lengthwise ends of the casing of the light emitter to supply an electric power and/or transmit a signal; a cable connected to at least one of lengthwise ends of the casing of the photo detector to supply an electric power and/or transmit a signal; a light emitter mounting means for mounting the casing of the light emitter to a support, said light emitter mounting means being positioned on a back surface of the casing of the light emitter opposite from a light emitting surface from which the light emitting elements emit light beams; and a photo detector mounting means for mounting the casing of the photo detector to a support, said photo detector mounting means being positioned on a back surface of the casing of the photo detector opposite from a photo-detecting surface where the photo detector elements receive light beams.