LC7235-E3 25.4 mm Dia. ZnSe Plano-Concave Lens; EFL=-50mm 7-12µm

The LC7235-E3 is a 25.4 mm diameter Plano-Concave Spherical Lens, designed for use in the 7-12 µm wavelength range. Manufactured by Thorlabs, this lens is constructed from ZnSe (Zinc Selenide) material, specifically the ZnSe CONNOLLY variant. The lens features a concave surface with a radius of curvature of -70.1 mm, and a planar surface on the opposite side. The lens has a center thickness of 2 mm and an effective focal length (EFL) of -50 mm.

The lens is coated with the THo E3ZnSeARC7000-120 coating on both the front and back surfaces, providing improved anti-reflection properties. This coating is specifically designed for the 7-12 µm wavelength range, enhancing the lens' performance in this spectrum. The lens is available from Thorlabs and, according to the vendor's website, is currently in stock.

This lens is suitable for a variety of applications that require a Plano-Concave lens in the mid-infrared range, such as infrared spectroscopy, thermal imaging, and other applications where the manipulation of infrared light is required. Its high-quality construction, precise specifications, and reliable performance make it a valuable addition to any optical system.