16-298 30mm Dia. S-LAH64 NIR Aspheric Lens; EFL=26mm; NA=0.58 SWIR-Plus 900-1700nm

The 16-298 is a high-performance aspheric lens designed for use in the near-infrared (NIR) spectrum, specifically for wavelengths between 900 and 1700nm. This lens is manufactured by Edmund Optics, a leading provider of optical components.

The lens features a 30mm diameter and a numerical aperture (NA) of 0.58, making it suitable for a wide range of applications that require high light-gathering capabilities and superior image quality. The aspheric design of the lens helps to minimize spherical aberration, which can degrade image quality, especially at high NA values.

The lens is made from S-LAH64, a high-refractive index material from Ohara that is specifically designed for use in the NIR spectrum. This material ensures high transmittance and low absorption across the entire NIR range, which is crucial for maintaining image quality.

The lens also features a coating of SWIR-Plus 900-1700nm, which is specifically designed to enhance the performance of the lens in the NIR spectrum. This coating reduces surface reflections, thereby improving light transmission and enhancing image contrast.

The lens has an effective focal length (EFL) of 26mm, which is a good balance between field of view and image magnification. The lens also has a relatively long back focal length (BFL) of 20.57mm, which provides sufficient space for the placement of other optical components, such as filters or beam splitters.

In terms of physical dimensions, the lens has a thickness of 3.82mm at the edge and 9.65mm at the center. The front surface of the lens has a radius of curvature of 20.2mm, while the back surface is flat.

The lens is available for purchase through the Edmund Optics website, where it is listed as being in stock at the time of writing.