4Lasers standard uncoated right-angle (45°-90°-45°) design prisms are fabricated from UVFS and BK7 optical glasses and have three optically polished rectangular surfaces (refer to the drawing). These prisms are popular at 90° internal or external beam bending, 180° beam folding, image rotation. These applications are based on the total internal reflection at glass-air boundary inside the prism, except 90° external beam bending, which requires metallic or highly reflective dielectric thin film to be applied onto the hypotenuse face. Antireflective coatings have to be applied in order to optimize the optical transmission for a particular application. Contact us for coating service, custom solutions, and pricing.

Main features

■ Fabricated from high-quality UV grade fused silica, BK7

■ Rectangular faces are optically polished

■ Standard and advanced grade selection

■ Metallic and dielectric thin-film coatings, custom substrate material and dimensions are available upon request