The SLB-50.8B-300PIR1 is a spherical lens with a base shape of a circle, offering a diameter of 50.8 mm and a focal length of 300.8 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of n-bk7 schott, a high-quality optical glass, and features a double-convex geometry, with radii of curvature of 311.4 mm and -311.4 mm for the first and second surfaces, respectively.
The lens has a thickness of 2.9 mm at the edge and 5 mm at the center. The back focal length (BFL) is 299.1 mm, and the effective focal length (EFL) is 300.8 mm. The lens is coated with opt ir1 on both the front and back surfaces, enhancing its performance in the wavelength range of 633-1064 nm. This lens is currently in stock and available for immediate purchase.