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Light Pipe - Slide4

The most effective light pipe and LED matching is to have the top of the LED as close to the light pipe entry point as possible. Losses occur when light goes from one medium to the next.  For example, when light travels through air into a light pipe there is an automatic light loss of 8%. Also, in order to obtain greater than 92% efficiency, the LED should be surrounded by a retaining wall of the light pipe.

PTM Published on: 2012-03-05