Yes, it will affect the light output to some extent. Even if the coating is clear, it will have a different refractive index than air. And through the lens and reflectors, the light will change. Besides, it will also affect the heat dissipation performance of the LED.
If you must use a coating, you can choose a ceramic package, which dissipates the heat better. And then keep the coating as thin as possible.
More reading: Comparison of LED PCB packaging with different materials
While I was replacing the LED, the pad fell off. How can I repair it?
I am designing LEDs that are packaged in metal cans. But I find the spectrum of LED lights will change with the temperature. How do I deal with it?
I am designing an LED array, but I don’t know what to do with the pad on the underside of the IC. Any advice?
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In recent years, LED light assembly technologies have been widely used among LED manufacturers and developers, and have sustained an exponential growth trend. The popularity
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