Explain further please. and click the spell checker. (ABC with green tick.)
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There's them that knows and them that just thinks they know, whitch are you? Stir the pot and see what rises up. I have catalytic properties I get a reaction going.
The refractive index (RI) of an LED is much higher than that of air, and as such there is internal reflection within the die itself. To overcome this, an optical ENCAPSULANT (usually a silicone gel) with a RI between that of air and that of the LED, is used to cover the die, hence there is less of a jump in RI and therefore a reduction in the internal reflection. An index match would mean internal reflection=0. There is lots of work done on index matching but the problem is its always done on monochromatic light and across only 2 RIs. LEDs emit light across a spectrum in all forward directions and the index match involves 3 RIs. What I would like to know is an equation that would describe index matching across 3 RIs.
Index matching LEDs
Re: Index matching LEDs
