22-767 12.5mm Dia. Germanium Infrared Aspheric Lens; EFL=9.5mm; NA=0.65 Uncoated

This is a high-quality 12.5mm diameter germanium aspheric lens, catalog number 22-767, available from the renowned optical components vendor, Edmund Optics. The lens is specifically designed for infrared applications, with a wavelength of 8000 nanometers.

The lens features an effective focal length (EFL) of 9.5mm, providing a compact and efficient optical solution. It has a high numerical aperture (NA) of 0.65, which allows for a wide angle of view and increased light gathering capability. The lens is uncoated, which can be beneficial in certain applications where a specific coating is not required or desired.

The lens geometry includes an inner radius of 0mm, an outer radius of 0mm, a thickness at the edge of 4.36mm, and a thickness at the center of 5mm. The aspheric design, with a first radius of curvature (r1) of 28.564mm and a conic constant (k1) of -0.9, helps to minimize spherical aberration and distortion, providing superior image quality.

The lens is made from germanium burnett, a high-refractive index material that is ideal for infrared applications. It has a refractive index of 4.02 at 10.6 microns, making it an excellent choice for high-performance infrared systems.

This lens is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. With its high-quality construction, advanced design, and excellent performance, this lens is an ideal choice for a wide range of infrared optical applications.