17-000 25mm Dia. N-SF6 Precision Aspheric Lens; EFL=25mm; NA=0.5 SWIR-Plus 900-1700nm

The 17-000 is a high-precision aspheric lens, designed and manufactured by Edmund Optics. This lens is characterized by its 25mm diameter and a numerical aperture (NA) of 0.5, specifically designed for use in the shortwave infrared (SWIR) spectrum, between 900 and 1700nm.

The lens is made from N-SF6 Schott glass, a material known for its excellent transmission properties in the SWIR range. The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional lenses, resulting in improved image quality and resolution.

The lens has an effective focal length (EFL) of 25mm, which is the distance from the lens's optical center to the point at which light rays converge. This EFL makes the lens suitable for a wide range of applications, including imaging, spectroscopy, and beam shaping.

The lens features a precision-ground front surface with a SWIR-Plus 900-1700nm coating, which enhances its transmission capabilities in the SWIR range. The back surface of the lens also features the same coating, ensuring optimal performance from both sides of the lens.

The lens has a thickness of 5.86mm at the edge and 9.86mm at the center. The inner and outer radii of the lens are 0mm, indicating a circular shape. The lens also features a front diameter of 25mm and a back focal length of 19.54mm.

In terms of optical performance, the lens has a conic constant (k1) of -0.8641265, with higher-order aspheric terms (k2, k3, etc.) being 0. This indicates a high degree of optical accuracy and precision.