16-986 40mm Dia. N-SF5 Precision Aspheric Lens; EFL=40mm; NA=0.5 NIR-Plus 600-1050nm

The 16-986 is a high-precision aspheric lens, designed and manufactured by Edmund Optics. This lens is characterized by its 40mm diameter and a numerical aperture (NA) of 0.5, specifically designed for use within the near-infrared spectrum of 600-1050nm.

The lens is constructed from N-SF5 Schott, a high-refractive index glass that is well-suited for applications requiring high dispersion and optical power. The aspheric design of the lens helps to minimize spherical aberration, a common issue in traditional spherical lenses, thereby improving the overall image quality.

The lens features an effective focal length (EFL) of 40mm, which is the distance from the lens's principal point to its focal point. This EFL, combined with the lens's NA, allows for a wide field of view and high light-gathering capability.

The 16-986 lens is coated with Edmund Optics' NIR-Plus 600-1050nm coating on both the front and back surfaces. This coating is designed to enhance the lens's performance within the near-infrared spectrum, reducing surface reflections and increasing transmission.

The lens has a thickness of 6.83mm at the edge and 14.7mm at the center. The front and back radii of curvature are 26.91mm and 0mm, respectively, with the back radius being flat. The lens also features a high degree of concentricity, ensuring excellent optical performance.