White light LED

White light LED is illuminating realm quest headway, at physically applied in continuously exaltation, have already obtained not a few result, push LED illuminate of development.LED is applied to the night scene illuminates and has already displayed very great superiority, but is a function lighting, also far didn't attain a mature stage regardless on the product or the technique, exist not a few problems that need further solution, certainly this also matches development regulation, the key problem has:

(1)The LED chip mainly depends on import, the applied domestic chip is few, big power(1 W and above) chip didn't°yet, the chip is in need of his/her own technique and intelligent property right;The our country has already owned a very large-scale LED to pack industry and has better material, but seals to pack technique, material and craft and also exists a certain margin.

(2)Lack united standard, include LED lamp system, drive electric circuit etc., a part of business enterprises develop their his/her own advantage and studied to develop own product and had some to then draw lessons from or make copy, the product level is uneven, each patrimony article scale each difference, compatibility bad, maintain a difficulty.

(3)The test method of LED floodlight didn't unify, some tests of parameters still needed a research, if the color diagraph friendly body's turning on electricity a light isn't necessarily same.

(4)The LED lamp product is still placed in an entry-level stage, not mature in the technique, also exist not a few problems, such as:
1)Spread a hot problem:How knot to effectively be as low as to allow level, still in the quest and the fulfillment, the temperature controls not good, influence radiation, add only and only Shuai to reduce, even color and color stability.

2)Majority of colors of LEDs are higher currently, excessive blue spectrum, for majority of indoor places, will make the person feel unwell, the creation incitement isn't enough with environment to moderate, the ray isn't enough soft, the disadvantage protects at eyes.

3)LED useds to indoor function lighting, how design a going together with of lamp only and control only system, is also a new topic, the definite direction gives out light of LED differ from existing light source, the glint, diffusion of lamp, go together with only, all have own characteristics.

4)LED illuminates of drive electric circuit:Also need to be further excellent to turn and standardize, also need date, its function includes service life, help consume, Xie wave, power factor etc., all need quest.

(5)The price leads Gao, is expansion application of another obstacle, the list is subsidized by government, not the good plan of development, replace an incandescent lamp to wait low effect light source with LED, have already shown Zhao economy energy effect, can enjoy a subsidy;But opposite three radicle colorses keeps tube fluorescent lamp, this higher effect light source, didn't economize on energy effect(at least today is such), lead high of the beginning set up expenses and there is extremely no the rationality of economy.

(6)Another problem that LED illuminates, is lack steady have a preface of development situation.Short several years, several thousand business enterprises crushes into LED lighting and have a coax but rise of power, make the person think of the age of "great leap forward".There are some business enterprises creating in the mimicry, the low level is repeated and depend exaggerative go into city, business enterprise and some medium having blend and excessively stir-fry to make and exaggerate economy energy effect, even the officials of the government also take to push wave to help a Lan function and misled usage unit separately.The technique standard and objective evaluation mechanism that has to build up a set of integrity, the practical and realistic public opinion direction, guides it to healthily develop.