87-947 25mm Dia. x 50mm FL; Coated; Ge Plano-Convex Lens BBAR 3-12µm

The 87-947 is a 25mm diameter, 50mm focal length plano-convex lens, designed for use in the 3-12µm spectral range. This lens is sourced from Edmund Optics, a leading provider of optical components.

The lens is made from Germanium burnett, a material known for its excellent transmission properties in the infrared spectrum. The plano-convex geometry, where one side is flat and the other curved, is ideal for collimating or focusing light. The lens has a clear aperture of 25mm and a thickness of 2.48mm at the edge, increasing to 3mm at the center.

The lens features broadband anti-reflection (BBAR) coatings on both the front and back surfaces, designated as 'edm arcedgermanium31'. These coatings are specifically designed to reduce surface reflections and increase transmission in the 3-12µm range. The lens's effective focal length (EFL) is 50mm, and its back focal length (BFL) is 49.25mm.

This lens is a versatile and high-performing option for applications in the infrared spectrum, such as thermal imaging, spectroscopy, and other infrared-based technologies. Its combination of high-quality materials, precise geometry, and advanced coatings make it a reliable choice for demanding optical systems.