Factors affecting the white LED luminous efficiency - 2013-04-27 18:24:32
1, the size of the phosphor particle size
If the particle size is relatively large, will directly reduce the light intensity, and dispensing of difficulty (easy precipitation), also fatal to the current situation of the use of phosphor, domestic phosphor manufacturers.
2, the excitation spectrum of the phosphor
The width of the excitation spectrum of the phosphor will also affect the light luminous efficiency (Blu-ray can fully stimulate the phosphor).
3, the phosphor anti-aging resistance
This parameter directly affects the life of the white LED.
4, epoxy anti-aging resistance
This parameter also directly affect the life of the white LED
5, the reflection efficiency of the lead frame (stent) or the substrate Area reflective cup
This is also a key factor affect the light intensity, good and bad will be 20% of the gap degree layer of good or bad influence.
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