LF7733-F 25.4 mm Dia. ZnSe Negative Meniscus Lens; EFL=-25.4mm 8-12µm

The LF7733-F is a high-quality spherical lens from Thorlabs, featuring a concave-convex base shape and a circular geometry. With a diameter of 25.4 mm, this lens is designed for use in the 8-12 µm wavelength range, making it suitable for a variety of infrared applications.

The lens has a negative meniscus design, with a center thickness of 4 mm and an edge thickness of 8 mm. The effective focal length (EFL) is -25.4 mm, indicating that it is a diverging lens. The first and second radii of curvature (R1 and R2) are 31.6 mm and 15.5 mm, respectively, and the back focal length (BFL) is -23.5 mm. The lens does not have an inner or outer radius.

The LF7733-F is made from ZnSe (Zinc Selenide) material, identified as "znse connolly" in the material ID. This material is known for its excellent optical properties, making it a popular choice for infrared applications. The lens is coated with Thorlabs' AR coating for ZnSe, optimized for the 8-12 µm range, on both the front and back surfaces to reduce reflection and increase transmission.

This lens is currently in stock and available for immediate shipping. For more information, please refer to the vendor's website using the provided weblink.