Photoemission device: photocell and the photomultiplier is a typical photoelectron emission type (external photoelectric effect) detector element. Its main features are high sensitivity, good stability, fast response and low noise engraving optoelectronic products, it is a current amplifier parts. Especially photomultiplier having a high current gain, is particularly suitable for the detection of weak optical signals; it complex optoelectronic performance, high voltage, a larger volume. Photoconductive device: the use of a semiconductor material having a photoconductive effect made photodetector called photoconductive devices, often called photoresistor. Several windows in the visible and atmosphere through, that the near-infrared, mid-infrared and far-infrared band, have applied to the light-sensitive resistors. Photoresistor is widely used in photoelectric automatic detection system, optical tracking systems, missile guidance, IR systems. Optoelectronics performance, Yantian District optoelectronic products, gold-precision provided by Huizhou Hing Precision Parts Co., Ltd.. Huizhou Hing Precision Parts Co., Ltd. (hzjxbp.com) (www.hzjxbp.com) strong, credible, in Huizhou, Guangdong standard mold industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinxing into the brilliant precision and you work for a better future!