There are many kinds of optoelectronic accessories, but they all work based on the physics of the photoelectric effect. The main types of photoelectric devices are: phototube, photomultiplier tube, photosensitive resistance, photosensitive diode, photosensitive transistor, photocell, photoelectric coupler. Optoelectronic accessories have a wide range of applications, such as home cameras, mobile phone cameras, night vision glasses, low light level cameras, photoelectric scopes, infrared detection, infrared guidance, infrared remote sensing, fingerprint detection, missile detection, medical detection and fluoroscopy, etc.