Cylindrical_Lens Feature Cylindrical lenses are available in either plano-concave or plano-convex configurations from MT-Optics,Inc. Plano-concave lenses have a negative focal length and are used for image reduction or to spread light. Plano-convex lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications. Telecommunication Systems Laser Measurement System Specification Material: N-BK7, High index optical glass Surface quality: 60-40 Centration: 5 arc min Surface Figure: (per 25mm @632.8nm) λ/2 Length tolerance: +0/-0.2mm Tolerance of focal length: +/-2% Tc tolerance: +/-0.1 mm Coating AR coating or HR coating Email: [email protected] Tel:+86-755-2372 7820 Fax：+86-755-2302 3823 www.hobbite.net Address:2F, Guohuitong Business Center, BaoAn District, ShenZhen City, GuangDong Province, PRC. Zip Code:518102