US Patent 11220210 Light pipe

A light pipe is provided that includes a light transmissive medium having an input at one end and configured to be operatively coupled to a light source, wherein the light transmissive medium defines a first portion connected to a second portion via a first bend portion of about 90°, and a series of prisms formed in the light transmissive medium, each prism having a V-shaped groove with an incline angle of about 45°, wherein each prism has a depth and a length that increases from the first portion to the second portion, and wherein a separation gap between adjacent prisms decreases from the first portion to the second portion. The light pipe may have third and fourth portions and form a U-shape.