16-280 12.5mm Dia. N-BK7 NIR Aspheric Lens; EFL=25mm; NA=0.25 NIR-Plus 600-1050nm

This is a high-quality 16-280 12.5mm Dia. N-BK7 NIR Aspheric Lens, designed for use in the near-infrared spectrum, specifically between 600 and 1050nm. The lens is sourced from the renowned optical vendor, Edmund Optics, and is available for immediate use, as indicated by its valid web link status.

The lens is made from N-BK7, a type of borosilicate glass known for its excellent optical properties, including a high refractive index and low dispersion. This makes it ideal for use in a wide range of optical applications, from imaging and metrology to beam shaping and laser systems.

The lens features an effective focal length (EFL) of 25mm, providing a moderate level of magnification. The numerical aperture (NA) is 0.25, indicating a wide acceptance angle and high light-gathering capability. This makes the lens suitable for use in applications where high light throughput and a large field of view are required.

The lens has a diameter of 12.5mm and a thickness of 2.43mm at the edge, reducing its weight and making it easier to handle and integrate into optical systems. The center thickness is 4mm, providing structural rigidity and minimizing optical distortions.

The lens is coated with Edmund Optics' NIR-Plus 600-1050nm coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the near-infrared spectrum, improving its transmission, reducing reflections, and protecting it from environmental hazards.