22-996 15mm Dia. N-BK7 Precision Aspheric Lens; EFL=22.5mm; NA=0.33 NIR-Plus 600-1050nm

This is a high-precision aspheric lens, catalog number 22-996, offered by Edmund Optics. It is designed for use in the near-infrared spectrum, specifically for wavelengths between 600 and 1050nm. The lens is made from N-BK7, a popular optical glass known for its excellent transparency in the visible and near-infrared ranges.

The lens has a diameter of 15mm and a numerical aperture (NA) of 0.33. The NA is a measure of the light-gathering ability of the lens and is an important factor in determining the resolution of an optical system. The lens also has an effective focal length (EFL) of 22.5mm, which is the distance from the lens's principal point to the focal point when the lens is focused at infinity.

The lens's geometry includes an inner radius of 0mm, an outer radius of 0mm, a thickness at the edge of 6.25mm, and a thickness at the center of 8.79mm. The aspheric surface is defined by a conic constant of -0.901164 and a quadratic term of 0. The front and back surfaces of the lens are coated with Edmund Optics' NIR-Plus 600-1050nm coating, which is designed to enhance the lens's performance in the near-infrared spectrum.

This lens is a versatile and high-performing option for applications that require a compact, high-NA lens in the near-infrared spectrum. It is available for purchase through the Edmund Optics website, and the current status is "in stock".