BICC-20.0-20.9-C 20 mm Dia. N-BK7 Laser Grade Concave-Concave Lens; EFL=-20mm Uncoated

This product is a Spherical Lens (Concave-Concave) from CVI Laser Optics, with the catalog number BICC-20.0-20.9-C. It is a high-quality optical component designed for use in laser systems and other applications where precise optical control is required.

The lens has a base shape of Circular and a diameter of 20 mm. The center thickness of the lens is 1 mm, and it has an effective focal length (EFL) of -20 mm, indicating that it is a diverging lens. The first radius of curvature (R1) is -20.9 mm, and the second radius of curvature (R2) is 20.9 mm, which are typical values for a concave-convex lens.

The lens is made from N-BK7 glass, a common material for optical components due to its excellent optical properties and high damage threshold. The glass is sourced from Schott, a leading manufacturer of high-quality optical materials.

The lens is designed for use at a wavelength of 587.6 nm. It does not have any coating, which means it is uncoated. This may affect its performance in certain applications, particularly those requiring high transmission or low reflectivity.

The lens is in stock and available for immediate purchase. More detailed information about the lens, including its full specifications and performance characteristics, can be found in the manufacturer's datasheet, which is available at https://www.idexot.com/media/wysiwyg/cms-pages/pdf/2-Spherical_Lenses.pdf.