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Test Philips Fluoresent tube and LED Tube: Spectrum & IES

Test Philips Fluoresent tube and LED Tube: Spectrum & IES

Can we know the LED lighting's real quality and specification? Such as Lumen Efficiency,CRI(Color Rendering Index),CCT(Color Temperature),Light Distribution & IES file? Is LED lighting really much higher efficiency than old fluorescent light? How is the performance on other spectrum parameters? Yes, we do testing for a whole range of Lighting products, include LED Indoor lights […]
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Will IES data change after the LED lights work a long time?

IES parameter is different from Lumen.It includes more data for LED light,include:Light Distribution,Light Intensity,Beam angle,UGR,etc.These are very useful for lighting project designers. And We already know:for good quality LED Lights, the Lumen reduction is very small after working for years. So,a question come:After the LED lights working for a long time, will these IES parameters […]
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