Light-Emitting Diodes (LED) Avalanche Photodiode (APD) RCLED/point light source/Parallel light emitting diode Pulsed laser diode (PLD) photo diode (PD) position sensitive detector (PSD) UVA /UVB /UVC sensor UV curing light source Flame detector Photodiode array VCSEL/ laser diode (LD) CSI scintillator screen LEd socket / flame detector socket / LD socket Battery Fingerprint identification module Fingerprint identification module Type C Class to metal sealing(TO46/TO39 caps) Ceramic to metal sealing(TO46/TO39 Headers) Photoelectric IC Multipixel photon counter(MPPC) Photomultiplier tubes Image Sensor Detector Camera Optical Assembly LED Light source Laser Diode mounting mounts