The problem of high power led module

Some problem we have to face when Use the high power led module
* color chromatic aberration of led
There are no problem when use just only a led module, this problemAppear in led module of mass product.
*pulse of LED
In fact I did run into this problem , main reaction in powered on.but
I does not recognize that them are static electricity.
*Light angle of LED
Different led lens has different light angle, their effects become completely different.
*LED dissipation
In theory led is cold light source, it generates no heat. But everyone know that this is problem
*LED efficiency
At currently ,the change efficiency of LED is relatively low.