16-289 50mm Dia. N-BK7 NIR Aspheric Lens; EFL=100mm; NA=0.25 NIR-Plus 600-1050nm

This product is a high-quality aspheric lens, catalog number 16-289, offered by the renowned optical vendor Edmund Optics. The lens boasts a 50mm diameter and a numerical aperture (NA) of 0.25, specifically designed for use within the near-infrared (NIR) spectrum, between 600 and 1050nm.

The lens is constructed from N-BK7, a popular borosilicate glass known for its excellent optical properties. This material ensures high transmission rates and low dispersion, making it ideal for a wide range of optical applications. The lens's shape is aspheric, which helps to minimize spherical aberration, a common issue in traditional spherical lenses. This design ensures superior image quality, making it suitable for high-precision applications.

The lens features an effective focal length (EFL) of 100mm, providing a good balance between field of view and focus. The lens's geometry includes a 3.73mm thickness at the edge and a 10mm thickness at the center, with a 0mm inner radius and a 0mm outer radius. The front and back surfaces of the lens are coated with Edmund Optics' NIR-Plus coating, which enhances transmission within the 600-1050nm range, further optimizing the lens's performance in the NIR spectrum.