SLB-20B-30PIR2 20.0 mm Dia. x 31.0 mm FL; Coated; Double-Convex Lens 750-1550nm

The SLB-20B-30PIR2 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 20.0 mm and a thickness edge of 2.0 mm, ensuring durability and robustness. The thickness center measures 5.3 mm, providing a balanced structure for optimal performance. The effective focal length (EFL) is 31.0 mm, making it suitable for a wide range of optical applications.

The lens's front and back surfaces are coated with opt IR2, a specialized coating that enhances its performance in the infrared spectrum. The first radius of curvature (r1) is 31.14 mm, while the second radius of curvature (r2) is -31.14 mm, indicating a double-convex lens design. The back focal length (BFL) is 29.1 mm, and both the inner and outer radii are 0 mm.

The lens is made of n-bk7 schott, a high-quality optical glass known for its excellent transmission properties and low auto-fluorescence. This material makes the lens suitable for use in high-precision optical systems.