This is a 39-553 25.4mm Dia. x 250mm FL; Coated; ZnSe Plano-Convex Lens BBAR 8-12µm, sourced from the renowned optical components vendor, Edmund Optics. The lens is a Spherical Lens of the Plano-Convex type, designed with a Circular base shape, making it suitable for a wide range of optical applications.
The lens has a diameter of 25.4mm and a thickness at the edge of 2.17mm, while the thickness at the center is 2.4mm. The Effective Focal Length (EFL) of the lens is 250mm. The first radius of curvature (R1) is 350.67mm, and both the inner and outer radii are 0mm.
The lens is made of ZnSe (Zinc Selenide) material, identified as "znse connolly" in the Material ID. This material is known for its excellent transmission properties in the infrared region, making it ideal for applications such as IR spectroscopy and thermal imaging.
The lens is coated with a BBAR (Broadband Anti-Reflection) coating on both the front and back surfaces. This coating is designed to reduce reflection and increase transmission across the 8-12µm wavelength range, further enhancing the lens's performance in infrared applications.
The item data indicates that this lens is in stock, and you can find more detailed information and purchase options on the Edmund Optics website using the provided weblink.