Generally speaking, the brightness emitted from a light pipe will be dependent upon the LED utilized as well as the shape of the application. A properly matched light pipe will emit the same brightness as the individual LED, minimizing the amount of light lost. An LED must be effectively matched to the entrance of a light pipe in order to allow for proper light capture with minimal light loss. Effective light pipe and LED matching occur only when the LED radiation pattern angle matches the acceptance pattern angle of the light pipe.