SLB-25B-80PIR2 25.0 mm Dia. x 80.6 mm FL; Coated; Double-Convex Lens 750-1550nm

The SLB-25B-80PIR2 is a high-quality lens from OptoSigma, designed for use in the 750-1550nm wavelength range. This lens is a Spherical Lens (Convex-Convex) type, featuring a base shape of Circular for versatile application.

The lens has a diameter of 25.0 mm and a thickness edge of 2.0 mm, ensuring durability and stability. The thickness center measures 3.9 mm, providing a robust structure for various optical setups. The effective focal length (EFL) of this lens is 80.6 mm, making it suitable for medium to long-range optical systems.

The lens's front and back surfaces are coated with Opt IR2, a specialized coating that enhances its performance in the infrared spectrum. This coating ensures high transmission and low reflection, making the lens ideal for applications that require excellent light transmission and minimal loss.

The lens's first radius of curvature (R1) is 83.04 mm, while the second radius (R2) is -83.04 mm, indicating a double-convex lens design. The back focal length (BFL) is 79.4 mm, which is crucial for determining the position of the lens in an optical system. The lens is made of n-bk7 schott, a popular material known for its excellent optical properties.