The SLB-30B-170PIR1 is a high-quality lens from OptoSigma, designed with a 30.0 mm diameter and a focal length of 170.5 mm. This lens is made of n-bk7 schott material, a popular choice for its excellent optical properties and durability. The lens features a double-convex geometry, with radii of curvature of 176.46 mm and -176.46 mm for the first and second surfaces, respectively. This specific lens is coated with opt ir1 on both the front and back surfaces, providing enhanced performance in the 633-1064nm wavelength range. The lens has a center thickness of 3.3 mm and an edge thickness of 2 mm, contributing to its robustness and optical precision. With its superior design and construction, the SLB-30B-170PIR1 is an ideal choice for a wide range of optical applications.