13-502 25mm Dia. S-LAH64 NIR Aspheric Lens; EFL=20mm; NA=0.63 Uncoated

This is the 13-502 model from Edmund Optics, a 25mm diameter S-LAH64 NIR precision aspheric lens. The lens is designed for use in the near-infrared (NIR) spectrum, specifically at a wavelength of 780nm. The lens is uncoated, offering a high numerical aperture (NA) of 0.63 and an effective focal length (EFL) of 20mm.

The lens's geometry is defined by its inner and outer radii, both of which are 0. This indicates a circular base shape. The lens has a thickness of 2.3mm at the edge and 7.6mm at the center. The front diameter is 0, with an edge thickness of 1.21264e-05mm, a curvature of -2.86896e-09mm, and a conic constant of 1.84191e-11mm. The aspheric coefficients are -2.15128e-14mm and 6.21173e-17mm.

The lens's shape is aspheric, which allows for improved optical performance compared to traditional spherical lenses. This is particularly beneficial in applications that require high resolution and low distortion. The uncoated design of the lens reduces reflection and increases transmission, making it suitable for use in high-transmission optical systems.

Please note that the provided information is based on the item data and does not include any additional assumptions or details. For more information, including current availability and pricing, please refer to the vendor's website.