16-966 40mm Dia. N-SF5 Precision Aspheric Lens; EFL=40mm; NA=0.5 VIS-EXT Plus 350-700nm

The 16-966 is a high-precision aspheric lens offered by Edmund Optics, designed for use within the visible light spectrum, specifically between 350 and 700nm. This lens is constructed from N-SF5 Schott material, a high-index glass often used in optical applications due to its excellent transparency and low auto-fluorescence.

The lens boasts a 40mm diameter and a numerical aperture (NA) of 0.5, making it suitable for a wide range of applications that require high resolution and light-gathering capabilities. 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 has a focal length (EFL) of 40mm, which is the distance between the lens and the point where it focuses light. This is a crucial factor in determining the magnification of the lens. The lens also has a thickness of 6.83mm at the edge and 14.7mm at the center, providing structural rigidity and resistance to deformation.

The 16-966 lens features a specialized coating, referred to as EDM VISPlus 350-700nm, which is applied to both the front and back surfaces. This coating enhances the lens's transmission in the specified wavelength range, reducing surface reflections and improving light transmission.