22-990 10mm Dia. N-SF6 Precision Aspheric Lens; EFL=7.5mm; NA=0.67 NIR-Plus 600-1050nm

The 22-990 is a high-precision aspheric lens offered by Edmund Optics, designed for use in the near-infrared spectrum, specifically between 600 and 1050nm. This lens, with a catalog number of 22-990, is a part of Edmund Optics' extensive catalog of optical elements, available for users of 3DOptix's advanced optical simulation software.

The lens features a 10mm diameter and a numerical aperture (NA) of 0.67, making it a versatile choice for a variety of applications. The NA is a measure of the light-gathering ability of the lens, and a higher NA allows for greater light collection and resolution. The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional lenses, resulting in improved image quality and focus.

The lens is made from N-SF6 Schott glass, a material known for its excellent optical properties in the near-infrared spectrum. The lens also features a special coating, Edmund Optics' NIR-Plus 600-1050nm coating, which is designed to enhance the lens' performance in the near-infrared range. This coating helps to reduce reflection and increase transmission, improving the overall efficiency and quality of the lens.

The geometry of the lens includes an inner radius of 0, an outer radius of 0, a thickness at the edge of 5.25mm, and a thickness at the center of 7.5mm. The effective focal length (EFL) of the lens is 7.5mm, and it has a back focal length (BFL) of 3.35mm. The lens's front and back surfaces are coated with the same NIR-Plus 600-1050nm coating.