Photosensitive sensor

- Jun 25, 2019-

Photosensitive sensor is a sensitive device with response or conversion function to external light signal or light radiation.

Photosensitive sensor is one of the most common sensors, it has a wide variety of main: photocell, photomultiplier tube, photosensitive resistor, photosensitive transistor, solar cell, infrared sensor, ultraviolet sensor, optical fiber photoelectric sensor, color sensor, CCD and CMOS image sensor. The main domestic manufacturers are OTRON brand and so on. Optical sensor is one of the most widely used sensors with the largest output at present. The simplest photosensitive sensor is a photoresistor, which generates an electric current when a photon strikes the junction.

classification:

Photosensitive sensor is one of the most common sensors, it has a wide variety of main: photocell, photomultiplier tube, photosensitive resistor, photosensitive transistor, solar cell, infrared sensor, ultraviolet sensor, optical fiber photoelectric sensor, color sensor, CCD and CMOS image sensor. The main domestic manufacturers are OTRON brand and so on. Optical sensor is one of the most widely used sensors with the largest output at present. The simplest photosensitive sensor is a photoresistor, which generates an electric current when a photon strikes the junction.

The working principle:

Photosensitive sensor is a sensor that converts light signal into electrical signal by using photosensitive element. Its sensitive wavelength is near the visible wavelength, including infrared wavelength and ultraviolet wavelength. Light sensors are not limited to light detection. They can also be used as detection elements to form other sensors that detect many non-electrical quantities, which can be converted into changes in optical signals.

application:

The simplest electronic device in photosensitive sensor is photosensitive resistor, which can sense the change of light and dark, and output weak electrical signal. Through simple amplification of electronic circuit, it can control the automatic switch of LED lamps. Therefore, it is widely used in automatic control and household appliances. For remote lighting fixtures, for example, automatic brightness adjustment in TV sets and automatic exposure in cameras. In addition, in the street lights, navigation marks and other automatic control circuit, winding self-stop device and burglar alarm device medium.