Silicon (Si) Lenses

Features

· Si Substrate

· Ø1/2" and Ø1" Versions Available

· Broadband AR Coating for the 3 - 5 μm Range

· Focal Lengths from 15.0 - 1000.0 mm Available

COE Optics' Ø1/2" and Ø1" Silicon (Si) Plano-Convex Lenses are available with a broadband AR coating optimized for the 3 - 5 μm spectral range deposited on both surfaces. This coating greatly reduces the high surface reflectivity of the substrate, yielding an average transmission in excess of 97% over the entire AR coating range.

Usage:

To minimize the introduction of spherical aberrations, light should be bent gradually as it propagates through the lens. Therefore, when using a plano-convex lens to focus a collimated light source, the collimated light should be incident on the curved surface. Similarly, when collimating a point source of light, the diverging light rays should be incident on the planar surface of the lens.