69-663 25mm Dia. x 35mm FL; Coated; Ge Plano-Convex Lens BBAR 8-12µm

The 69-663 is a 25mm diameter, 35mm focal length plano-convex lens, designed for use in the 8-12µm 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 high refractive index and transparency in the infrared spectrum. The plano-convex geometry, where one side is flat and the other is curved, is ideal for applications that require a high level of focusing precision.

The lens features a broadband anti-reflection (BBAR) coating on both the front and back surfaces. This coating is specifically designed for the 8-12µm spectral range, reducing surface reflections and increasing transmission. The coating also provides protection against environmental contaminants and wear, enhancing the lens's durability and longevity.

The lens has a center thickness of 3mm and an edge thickness of 2.25mm. The inner and outer radii are 0mm, indicating a sharply curved surface on the convex side. The back focal length (BFL) is 34.25mm, and the effective focal length (EFL) is 35mm.

This lens is a versatile and high-performance option for infrared applications. It is available for purchase directly from Edmund Optics, and the provided weblink offers more detailed information and purchasing options.