22-780 12.5mm Dia. Germanium Infrared Aspheric Lens; EFL=12.5mm; NA=0.5 BBAR 8-12µm

This is a high-quality aspheric lens from Edmund Optics, specifically designed for infrared applications with a wavelength of 8000nm. The lens, catalog number 22-780, has a diameter of 12.5mm and a focal length of 12.5mm, making it a compact and efficient option for various setups.

The lens is made of germanium burnett, a material known for its excellent transmission properties in the infrared spectrum. It features a high numerical aperture (NA) of 0.5, which allows for a wide angle of view and increased light gathering capability.

The aspheric design of the lens helps to reduce spherical aberration, a common issue in traditional spherical lenses. This results in improved image quality, particularly at the edges of the field of view. The lens also has a double-sided broadband anti-reflection (BBAR) coating, which further enhances its performance by reducing surface reflections.

The lens has a thickness of 2.5mm at the edge and 3mm at the center, providing structural rigidity. The front and back surfaces of the lens are coated with "edm arcedgermanium81", a coating specifically designed for germanium lenses to enhance their performance in the infrared spectrum.

The lens is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink.