Electrooptic devices are just the opposite

Last Update Time: 2018-10-31 11:01:18

The history of photoelectric technology is actually earlier than that of electronic technology.In early twentieth Century, Einstein won the Nobel prize with the discovery of photoelectric effect.With the development of modern science and technology, the photoelectric technology has renewed its youth,and all kinds of new devices are constantly emerging.The photoelectric technology has infiltrated into various fields of modern science and technology and life,and has become one of the most important technologies in remote control technology and information transmission technology.

The core of optoelectronic technology is optoelectronic devices,which include 3 main categories:photoelectric converter,electro-optical converter,and optical coupling device with the characteristics of the former two.Photoelectric devices can convert light radiation into electrical signals.There are photodiodes,photosensitive transistors, solar cells and so on.

Electrooptic devices are just the opposite.It can convert electrical signals into light radiation,common light emitting diodes (LED),infrared diodes,photosensitive diodes, photosensitive transistors,optocouplers,picture tubes in TV sets,and computer monitors.Liquid crystal display technology and plasma display technology developed in recent years are also a branch of optoelectronic technology.Liquid crystal technology has been widely used in liquid crystal electronic watches,liquid crystal display calculators,mobile phones,and even liquid crystal televisions and portable computers.

Light emitting diodes.

Light emitting diode (LED) is a semiconductor device that transforms electrical energy into light energy.It emits visible light,invisible light,laser and so on.LED,like ordinary diodes,has a single conductivity,but its opening voltage is larger than that of ordinary diodes,which is 1.7~2. 4V.

The classification of LED tubes.

According to the spectral classification,LED can be divided into two kinds of visible and invisible light.According to the color classification,it can be divided into red, green, yellow,orange,blue and so on.According to the luminance of LED,it can be classified into two kinds:general brightness and high brightness.According to the effect of luminescence,it can be divided into color change and monochromatic color.According to the power of LED,it can be classified into small power and medium power.According to the shape of LED,it can be divided into round,square,rectangular and irregular shapes.According to the encapsulation and classification of LED,it can be divided into plastic packaging and metal shell packaging.