Bi-concave spherical lenses feature two spherical concave surfaces with the same radius of curvature, while their focal length is negative. The performance of these lenses is best when used for finite conjugate (0,2X - 5X ratio) applications, most often to diverge converging light.

Main features

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

■ Standard diameter is ø25,4 mm

■ Focal length selection from -25 mm to -100 mm

■ Antireflective coating, custom substrate material, dimensions, and focal lengths available upon request