LED is byⅢ-ⅣThe race compound, like GaAs (gallium arsenic), GaP (phosphorization gallium), GaAsP (phosphorus gallium arsenic) and so on semiconductors make, its core is the PN knot. Therefore it has the I-N characteristic which general P-N ties, namely the forward breakover, cuts off, the puncture characteristic reverse.LED Spot Lights In addition, under the controlled condition, it also has the fluorescent characteristic. Under the direct voltage, the electron pours into the P area by the N area, the hole pours into the N area by the P area.
Enters opposite party region the minority carrier (youngest son) part and the majority carriers (multi-children) bonds shines.
The supposition illumination is occurs in the P area, then pours into the electron and the valence band hole bond directly shine, after or first by luminescent center capture, then with hole compound illumination.
Besides this kind of illumination compound,led tube light but also has an electron (this center to be situated between by the non-luminescent center conduction band, to lie between belt middle neighbor) to catch, then again with hole compound, each time releases the energy is not big, cannot form the visible light. The illumination compound quantity is opposite in the non-illumination compound quantity proportion is bigger, the light quantum efficiency is higher. Because compound is shines in the youngest son proliferation area, therefore light only in approaches the PN surface number μm within to produce.
The theory and the practice proved that light peak wavelength Lamda and illumination region semiconducting material energy gap Eg, Eg unit for electron volt (eV).When these gentle LED lamp according to cheap evening dressesThat puts on evening dresses you will appear more beautiful moving If can produce the visible light (wave length in 380nm the visual purple ~780nm thioindigo red), semiconducting material's Eg should between 3.26~1.63eV. Compared to the thioindigo red wave length long light is the infrared light. Now had infrared, red, yellow, green and the blue light light emitter diode, but the blue light diode cost, the price are very high, uses not universally.
How does the LED projecting light install the use? the led projecting light already can single mount the use, but can also combine many LED projecting lights installs together on the 20m above range pole, constitutes the high pole illumination device. This kind of equipment not only handsome appearance, may also lightpost and area outside characteristics and so on concentrate the maintenance maintenance, reduce, Is your conceivable LED lamp shines in shoes that will be very sexy cheap women shoesTherefore we must look for a pair suits from already shoes carefully the most major characteristic is the illumination function is very formidable.
The light projects from the high place, the environment spatial brightness is very high, the light coverage is big, for the human one kind of approximate daytime's feeling, will have the high illumination quality and the visual effect. In order to satisfy time the outdoor use the lowest safety performance requests, the led projecting light's outer covering protection rank should for IP×3 (open type). Jewelry's ray cannot leave the LED lamp's illumination. cheap fashion je welryLED and the jewelry relations likely the Water and fish In order to enhance lamps and lanterns' durable performance, reduces the maintenance work load, the people take seriously to develop the disposable investment expenses high closed type led projecting light more and more, its outer covering protection rank is IP55.
led projecting light to further enhance the lamps and lanterns luminous efficiency compared to, the reflector tends to uses is advantageous the reduced photo source block block surface reflector and satisfies the special illumination request the multi-focal point reflector;
The reflecting surface surface treatment
tends to uses the new material and the new craft, obtains 96% above
reflectance. led projecting light to reduce the lamps and lanterns
weight, will reduce the metallic material thermostablly
consumption, the lamps and lanterns outer covering to, the high
mechanical strength, the anti-aged plastic outer covering direction
will develop.
