Leuze prk 46b retroreflective photoelectric sensor polarisation filter leuze electronic 50103070 this photoelectric sensor has a long operating range and high performance reserves for reliable object detection even with small unclean or misaligned reflectors a polarisation filter makes it easy to detect glossy surfaces and asup2 ls active ambient light suppression improves performance by eliminating light interference swift and easy alignment is possible using b i brightvision i b