WLOptical Co., Ltd is an established Asian supplier of precision optical components and materials and a holder of ISO 9001:2000 quality certification.We mainly supply precision optical element to University, R&D detp, Military, Excimer Laser fields, and Optical instruments. say: s/d: 10-5, flatness: <1/10 lambda@633nm, R<0.15%@532nm. Here are our products lines. 1). prism (size 5-150mm): right angle prism, roof prism, petan prism, corner cube prism, periscope prism. 2). spherical lens( size 4.0-220mm): single lens, doublet lens, square spherical lens. 3). cylinder lens (size 1.0-350mm): plano-convex/concave cylinder, bi-convex/concave lens. 4). Infrared optics (size 3.0-180mm): Ge, ZnSe, ZnS, Si, CaF2, MgF2, BaF2 windows. 5). UVFS optics,optical grating, mirror, or AR/BBAR/HR/DLC coating service. 6). windows: D2.0~580mm, we can supply double side polishing, contact polishing. 7).filters: bandpass filter, long-pass filter, low-pass filter, color filter, day-night filter. Our experience and unique geographical location allow us to consistently deliver high-quality products at competitive prices, If you are interested in learning more about our company and the products we offer, please visit our website at www.wloptical.com.