The Double Concave Lens, or biconcave lens consists of two concave spherical surfaces with negative focal lengths, which are suitable for diverging converging light beams. It is also called a diverging lens or a negative spherical lens. Biconcave lenses can diverge collimated beams to a virtual focus and are often used for beam expansion, collimation, projection and enlarging the focal length of optical systems.

Double Concave lenses can be used in photography systems, imaging systems, beam expansion, projection and expansion of optical system focal length, laser measurement systems, and are widely used in telescopes, camera lenses, and microscopes.

AOS Optics customizes without coating and anti-reflection coating double concave lens to meet your different applications in different bands. Anti-reflection coating includes UV, VIS, NIR, and SWIR.

AOS also provides biconcave lenses with a variety of substrate materials. H-K9L optical glass substrates are suitable for visible and near-infrared band applications, germanium, silicon, zinc selenide, and calcium fluoride substrates are suitable for infrared applications, and fused silica is suitable for UV applications.