16-967 40mm Dia. N-SF5 Precision Aspheric Lens; EFL=30mm; NA=0.66 VIS-EXT Plus 350-700nm

The 16-967 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 0.66, making it suitable for a wide range of applications that require high-resolution imaging and light gathering capabilities.

The lens is made from N-SF5 Schott, a high-index glass that offers excellent optical performance and is particularly suitable for use in the visible spectrum. The lens has an effective focal length (EFL) of 30mm, which, combined with its high NA, provides a wide field of view and high light gathering capabilities.

The lens features a high-quality coating, specifically the Edmund Optics VIS-EXT Plus 350-700nm coating. This coating is designed to enhance the lens's performance in the visible spectrum, improving its transmission and reducing unwanted reflections.

The lens's geometry is also noteworthy. It has an inner radius of 0mm, an outer radius of 0mm, and a thickness at the edge of 8.83mm. The lens's thickness at the center is 20mm, and it has a front surface radius of curvature (R1) of 20.182mm and a back surface radius of curvature (R2) of 0mm. The lens's back focal length (BFL) is 18.04mm.

The lens's aspheric shape is another key feature. Aspheric lenses are designed to reduce spherical aberration, a common optical problem that can degrade image quality. This lens's aspheric shape is defined by its conic constant (k1) of -1.819186 and its aspheric coefficients (k2 to k5), which are 0, 0, 0, and 0, respectively.