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How to Select the Right Light Pipe Homogenizing Rod

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How to Select the Right Light Pipe Homogenizing Rod

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Much like optical fibers, light pipe homogenizing rods utilize total internal reflection (TIR) to transmit light from the entrance to the exit of the light pipe. The substrate’s refractive index is the only factor that influences the light pipe’s critical angle, which defines the angle of acceptance at which TIR will occur. Light pipes designed specifically for high NA, standard NA, and low NA light sources will have the same acceptance angle if designed with the same substrate.

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