The LED series lights have no searchlights. How far is the range?
Automobile signal light is also an important field of LED light source applications. In 1987, our country began to install high brake light on the car, because the LED response speed (nanosecond), we can let the driver of the vehicle as soon as possible to know the driving conditions and reduce the rear end crash.In addition, LED lights have been used in outdoor red, green, blue, full-color display, key button micro torches and other fields.LED lamp parameters: brightness according to the use of the environment and other factors, the wavelength of red light: 620nm-625nm, green light wavelength: 520nm-525nm, blue light wavelength: 465nm-470nm.
Take the 12 inch red traffic light, for example, in the United States, which uses a long life, low light, 140 watt incandescent lamp as a source of light, producing 2000 lumens of white light. After the red filter, the light loss is 90%, leaving only 200 lumens of red light. In the new design of the lamp, Lumileds company uses 18 red LED light sources, including circuit loss, including a total power consumption of 14 watts, which can produce the same light effect.
Initially, LED was used as an indicator light source for instruments and meters. Later, various light colored LED were widely used in traffic light and large area display screen, which produced very good economic and social benefits.