What are the spectral characteristics of the LED light source?
In brief, we can see the luminous wavelength of the spectrogram, and different wavelengths form different colorsThe spectral wavelength distribution of 460 ~ 636nm from short to long wavelength are presented for the blue, green, yellow green, yellow, orange, red and yellow. The typical peak wavelength is LED common color: Blue - green blue - Green - 470nm 505nm 525nm - 590nm 615nm - yellow orange red - 625nm
Spectral characteristics1 、 high luminous efficiencyAfter several decades of technical improvement, the luminous efficiency of LED has been greatly improved. Incandescent lamp, halogen tungsten lamp, light efficiency of 12-24 lumens / watt, fluorescent lamp 50~70 lumens / watt, sodium lamp 90~140 lumens / watt, most of the power consumption into heat loss. The LED light effect will be up to 50~200 lumens / watt after improvement, and its light color is good and the spectrum is narrow. Without filtering, it can directly emit colored visible light. At present, all countries in the world are stepping up efforts to improve the LED light efficiency research, and in the near future, the luminous efficiency will be greater.2, less power consumptionLED single tube power 0.03 to 0.06 watts, using DC drive, single tube drive voltage 1.5 to 3.5 volts, 15~18 ma current, fast response, can be operated at high frequency. The same lighting effect, power consumption is 1/10000 of incandescent bulbs, fluorescent tubes, 1/2 Japanese estimates, such as the use of incandescent lamp and fluorescent lamp fluorescent lamp with high light efficiency more than two times the LED replace half of japan. It can save up to 6 billion litres of crude oil a year. Bridge guardrail lamp, a fluorescent lamp of the same effect more than 40 watts, and the use of LED power each only 8 watts, and color change.
Light-emitting diode, referred to as LED, LED light bulbs, both in structure and in light, are intrinsically different from traditional incandescent lamps. The light emitting diode is made of doped semiconductor materials by the number of layer is very thin, with a layer of excess electrons, another layer due to the lack of electronic form positively charged "hole", when a current is passed, electrons and holes are combined with each other and release energy to radiate light.
