To at present LED product, had crossed the current situation of lapidation ask the way, from 8 years wide hand in of the meeting always besides in light of, each big companies already how many sortie among them, especially of amount of medium and small businesses achieve many 30, they grab those who was in big company in front, think namely first market of one pace race to control, look the personage inside course of study had been to maintain LED this one market.

That after all is the condition with LED current street lamp how?

At present sundry conventional lighting, LED has completely almost, phyletic and various, that with respect to specific aim for next LED -- street lamp.

Because be opposite,the national level of respect of LED street lamp has not gone out, what can consult now is a few local occupation standard only, and the preliminary manuscript that a few big companies and national orgnaization establish occupation standard serves as reference, majority still is done by right of experience.

Becoming a few problems that face in the process of LED street lamp, below the specification of 2 luminous intensity distribution that is aimed at LED now.

The problem of luminous intensity distribution of LED can say simple complex also, why so say. Because:

(1) look in one part person, use the character of the grain itself of LED, the square all along that will change it satisfies the luminous intensity distribution of smooth uniformity, contented street lamp, such whether reasonable? From " software " for the respect although can be satisfied smooth distributing equably quality, whether can you satisfy the curve of luminous intensity distribution of street lamp of existing state level? Apparently cannot. Which from " hardware " in light of the respect, the characteristic demand that the consequence that it will cause is pair of lamps and lanterns is higher, stronger to the making uniqueness of light system, such the biggest question depends on any coming that prevent dazzle.

(2) the issue of luminous intensity distribution that can become moreover uses lens namely, lens can form the curve of luminous intensity distribution that street lamp needs, can make light evener distributing, the problem depends on at present lens can accomplish best light transmittance is 92% that is theoretical value, achieve in applying actually 87% , the smooth caustic of hundred, tall to the energy-saving, smooth effect of LED street lamp, these data are one violates a condition.

(3) so returning some way is to use glance board, its apply opposite for the effect should want a bit more hopeful, but cost does not poor, it goes up unlike lenticular market can find various off-the-peg thing, want the design of professional above all, want a standard next, cause early days investment is higher, opposite risk is bigger.

With respect to above a few kinds of circumstances are compared, the sort of suiting that admit need now, perhaps more reasonable idea solves problem of luminous intensity distribution to still remain research and attestation.
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