Custom 91% Transmittance 166×85 Degree PC COB LED Optical Lens for Street Light and Tunnel Lighting OEM ODM Product Overview With a published 166×85° beam angle, 91% optical transmittance, and 86×76×30.6 mm lens dimensions, this optical lens is designed to redirect light from high-power COB LED sources into a wider roadway-oriented distribution rather than allowing the LED to emit uncontrolled light directly into the fixture. The published product information specifies a