WLoptical Co., Ltd is an established Asian supplier of precision optical components and materials and a holder of ISO 9001:2000 quality certification. It is our pleasure if our introduction could help your work.We would like to use this opportunity to provide you with more detailed information about us. We mainly supply precision optical element to University, R&D dept, 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 prisms2). 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: band-pass filter, long-pass filter, low-pass filter, color filter, day-night filter.