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: band-pass filter, long-pass filter, low-pass filter, color filter, day-night filter