69-650 25mm Dia. x 30mm FL; Coated; Ge Plano-Convex Lens BBAR 3-5µm

The 69-650 is a 25mm diameter, 30mm focal length plano-convex lens, manufactured by Edmund Optics. This lens is made of Germanium burnett, a material well-suited for infrared applications due to its high refractive index and transparency in the infrared spectrum.

The lens features a front and back coating of EDM ARCEDGERMANIUM35, a broadband anti-reflection (BBAR) coating designed to minimize surface reflections and improve transmission in the 3-5µm wavelength range. This coating enhances the lens' performance in infrared applications, reducing losses due to reflection and increasing the overall efficiency of the system.

The lens has a center thickness of 3mm and an edge thickness of 2.13mm, providing a balance between compactness and optical performance. The inner and outer radii are both 0mm, indicating a planar surface on one side and a curved surface on the other. The curvature of the lens (R1) is 90.12mm, and the back focal length (BFL) is 29.25mm.

According to the vendor's website, this lens is currently in stock, making it readily available for immediate use in your optical systems. The detailed specifications and the availability of this lens make it a suitable choice for applications in the infrared spectrum that require a plano-convex lens.