Abstract: A photoelectric sensor and method for sensing a target at a predetermined location. The photoelectric sensor includes a light source that emits light, an output circuit including first and second photodetectors, and first and second receive lenses respectively positioned adjacent to the first and second photodetectors, respectively. If the target is at the predetermined location, then a first portion of the emitted light is received by the first photodetector after being reflected off of the target and passing through the first receive lens, and a second portion of the emitted light is received by the second photodetector after being reflected off of the target and passing through the second received lens. Further, the output circuit produces an output signal indicative of a sensed characteristic of the target based on signals generated by the first and the second photodetectors.

Abstract: Disclosed herein is an exemplary photoelectric sensor having an emitting portion for emitting light toward a target and a receiving portion for receiving, through a receive lens, reflected light that is at least some of the emitted light that is reflected by the target. The sensor further includes a refraction block having a block first surface and a block second surface wherein the reflected light received from the receive lens is refracted by at least one of the block first surface and the block second surface as it passes through the refraction block. The sensor also includes a photodetector for receiving the reflected light refracted by the refraction block and provides a detection signal indicative of the reflected light received.

Abstract: Disclosed herein is a photoelectric sensor and method for sensing a target at a predetermined location. In at least one embodiment, the photoelectric sensor includes a light source that emits light, an output circuit including first and second photodetectors, first and second receive lenses respectively positioned adjacent to the first and second photodetectors, respectively, and a support structure for supporting each of the light source, the photodetectors, and the receive lenses in relation to one another. If the target is at the predetermined location, then a first portion of the emitted light is received by the first photodetector after being reflected off of the target and passing through the first receive lens, and a second portion of the emitted light is received by the second photodetector after being reflected off of the target and passing through the second received lens.

Abstract: Disclosed herein is an exemplary photoelectric sensor having an emitting portion for emitting light toward a target and a receiving portion for receiving, through a receive lens, reflected light that is at least some of the emitted light that is reflected by the target. The sensor further includes a refraction block having a block first surface and a block second surface wherein the reflected light received from the receive lens is refracted by at least one of the block first surface and the block second surface as it passes through the refraction block. The sensor also includes a photodetector for receiving the reflected light refracted by the refraction block and provides a detection signal indicative of the reflected light received.