LB7436-E3 12.7 mm Dia. ZnSe Double-Convex Lens; EFL=15mm 7-12µm

The LB7436-E3 is a high-quality double-convex lens from Thorlabs, designed for use in the 7-12 µm wavelength range. This lens is made from ZnSe (Zinc Selenide) material, which is known for its excellent transmission properties in the infrared spectrum. The lens has a diameter of 12.7 mm and a thickness of 2 mm at the edge, increasing to 3 mm at the center.

The lens features a focal length (EFL) of 15 mm, which is the distance from the lens's center to the point where light rays converge. The first radius of curvature (R1) is 41.2 mm, while the second radius (R2) is -41.2 mm, indicating a concave shape on the opposite side of the lens. The lens's shape is spherical, meaning it has the same curvature throughout its surface.

The LB7436-E3 is coated with Thorlabs' E3AR ZnSe Anti-Reflection coating, which is designed to reduce surface reflections and increase transmission in the 7-12 µm range. This coating is applied to both the front and back surfaces of the lens.

According to the vendor's website, this item is currently in stock, making it readily available for immediate use. For more detailed information, including technical drawings and performance data, please refer to the product's webpage on Thorlabs' official website.