Spherical Lens Feature A "spherical lens" is a lens whose surface has the shape of (part of) the surface of a sphere,commonly used for laser diode collimation, and for coupling light into and out of optical fibers. Telecommunication Systems Laser Measurement System Specification Material: N-BK7, Fused Silicon or others as customer specified Size: Rectangular or customized size Surface quality: 40-20 or better Centration: 3 arc min Surface Figure: (per 25mm @632.8nm) λ/4 or better Diameter tolerance: +/-0.05mm Tolerance of focal length: +/-0.5% Tc tolerance :+/-0.05mm Coating: AR, HR coating or Metal reflection 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