NJL5912R Photo Reflector Nisshinbo NJL5912R Photo Reflector is a compact surface-mount type photo reflector. This photo reflector is built with a high-brightness infrared LED and a high-sensitivity phototransistor. Nisshinbo NJL5912R Photo Reflector features a built-in visible light cut-off filter function. This photo reflector employs Chip On-Board Package (COBP) technology and comes with a 0.5mm thickness. Typical applications include detecting the lens location for cellular phone's camera modules, detecting the needle position for radio-controlled watches, and detecting the original point of encoders.