22-999 20mm Dia. N-SF6 Precision Aspheric Lens; EFL=15mm; NA=0.67 NIR-Plus 600-1050nm

The 22-999 is a high-precision aspheric lens, 20mm in diameter, manufactured by Edmund Optics. This lens boasts a numerical aperture (NA) of 0.67, making it an excellent choice for applications requiring high light-gathering capabilities. The lens is made from N-SF6 Schott, a material known for its excellent optical properties, particularly in the near-infrared (NIR) spectrum.

The lens is specifically designed for use in the 600-1050nm wavelength range, making it suitable for a wide array of NIR applications. It features an effective focal length (EFL) of 15mm, which, combined with its high NA, provides a substantial depth of field. This makes it ideal for imaging applications where a large field of view and high resolution are required.

The lens's aspheric design helps to reduce spherical aberration, a common issue in traditional lenses, resulting in improved image quality. The front and back surfaces of the lens are coated with Edmund Optics' NIR-Plus 600-1050nm coating, which enhances its transmission in the NIR spectrum.

The lens has a center thickness of 12.42mm and an edge thickness of 7.97mm, providing robustness and durability. The front and back focal lengths are 8.12mm and 0mm, respectively. The lens's shape is defined by its radii of curvature (r1 and r2), which are 12.078mm and 0mm, respectively.