39-516 25.4mm Dia. ZnSe Aspheric Lens; EFL=25.4mm; NA=0.5 BBAR 8-12µm

The 39-516 is a high-quality aspheric lens, designed and manufactured by Edmund Optics. This lens boasts a 25.4mm diameter and a focal length of 25.4mm, making it an ideal choice for a wide range of optical applications. The lens is crafted from ZnSe (Zinc Selenide), a material known for its excellent optical properties, particularly in the infrared spectrum.

The lens features a high numerical aperture (NA) of 0.5, which allows for a wide angle of acceptance and improved light gathering capabilities. The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional spherical lenses, resulting in superior image quality.

The lens is coated with BBAR (Broadband Anti-Reflection) coating, specifically designed for the 8-12µm wavelength range. This coating significantly reduces surface reflections, improving transmission and enhancing overall system performance.

The lens has a central thickness of 4.5mm and an edge thickness of 2.29mm, providing robustness and durability. The front and back surfaces of the lens are coated with the same BBAR coating, ensuring optimal performance from both sides.