16-954 15mm Dia. N-SF6 Precision Aspheric Lens; EFL=11.25mm; NA=0.66 VIS-EXT Plus 350-700nm

The 16-954 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-SF6 Schott glass, a material known for its excellent optical properties and durability.

The lens features a 15mm diameter and a numerical aperture (NA) of 0.66, indicating a wide acceptance angle and high light-gathering capability. The effective focal length (EFL) of this lens is 11.25mm, making it suitable for applications that require a moderate level of magnification.

The lens geometry is defined by several key parameters. The inner radius is 0mm, while the outer radius is also 0mm, indicating a symmetrical design. The thickness at the edge is 6.67mm, and the thickness at the center is 10mm. The lens's front and back surfaces are coated with Edmund Optics' VIS-EXT Plus coating, which is optimized for the 350-700nm range, ensuring high transmission and minimal reflection.

The aspheric design of this lens helps to correct spherical aberration, a common optical issue that can lead to distorted or blurry images. The lens's shape is defined by its radius of curvature (r1), which is 9.059mm, and its conic constant (k1), which is -0.8308645. These values contribute to the lens's high optical performance and minimal distortion.