SLB-15B-20PIR1 15.0 mm Dia. x 20.8 mm FL; Coated; Double-Convex Lens 633-1064nm

The SLB-15B-20PIR1 is a high-quality lens from OptoSigma, designed for use in a wide range of optical applications. This lens, with a diameter of 15.0 mm and a focal length of 20.8 mm, is a Spherical Lens (Convex-Convex) type, featuring a Base Shape of Circular.

The lens is made from n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. The geometry of the lens includes a thickness edge of 2.0 mm and a thickness center of 4.8 mm. The effective focal length (EFL) is 20.8 mm, while the back focal length (BFL) is 19.2 mm. The radii of curvature for the first and second surfaces are 20.76 mm and -20.76 mm, respectively.

The SLB-15B-20PIR1 comes with a coating on both the front and back surfaces. The coating is opt ir1, which is specifically designed for use in the infrared region of the spectrum, from 633nm to 1064nm. This coating enhances the lens' performance by reducing reflection and increasing transmission, making it ideal for use in IR applications.