Energy-saving project-light lamp principle of work: 1, project-light lamp energy saving is the main way of working through the rectifier power frequency 50 hz, 220 v ac rectifier into a smooth dc, and then the frequency oscillator will dc transform into more than 40 KHZ high frequency alternating current (ac) and then to the lamp power supply, above the lamp pole of the tubes coated with electronic powder, when the current passes through, produces various ray powder release a large number of electronic, the release of electronic (various radiation such as ultraviolet light, etc.) directly bombards the lining of the pure rare earth tricolor phosphor powder, rare earth tricolor phosphor powder after the bombardment produces an avalanche effect to glow. (uv after conversion into visible light).

2. Working principle of led line lamp: high frequency led line lamp is composed of high frequency generator, coupler and light bulb. It is coupled to the lamp by the electromagnetic field of the high frequency generator, which causes the gas avalanche in the bulb to ionize and form plasma. When the excited atoms return to the ground state, they emit ultraviolet radiation. The fluorescent powder on the inner wall of the bulb is stimulated by ultraviolet light to produce visible light.

3. Working principle of white light led: in the process structure, white led usually adopts two methods. The first is to use the "blue ray technology" with fluorescent powder to form white light; White leds are used to encapsulate GaN chips and yttrium aluminum garnet (YAG). GaN chips emit blue light (p=465nm, Wd=30nm), and YAG phosphors containing Ce3+ are produced by high temperature sintering, which emit yellow light emission after being excited by this blue light, and the peak value is 550nm. The blu-ray led substrate is mounted in a bowl - shaped reflector, covered with a resin thin layer of YAG, 200-500nm. The blue part of the led substrate is absorbed by the phosphor, and the other part of the blue light is mixed with the yellow light from the phosphor, which can be white. Now, for InGaN/YAG white led, the white light of different color temperature (2700 -- 8000K) can be obtained by changing the chemical composition of YAG phosphor and the thickness of the fluorescent powder layer.

White led light source is dependent on the four kinds of phosphors, the three primary colors of rare earth red, green, and blue powder and the structure of the garnet yellow powder, is a promising three wavelengths of light, i.e., according to the inorganic uv chip R.G.B three color phosphor, used to encapsulate the led white light. The second kind is a variety of monochromatic light mixing method, namely USES the chip of different color light to package together, produce white light through each color light mixed.