optical prism with 17 20mm thickness

{"cid":"91223678","title":"23 Sided Glass Prism for Optical Experiments 17-20mm Thickness","imgUrl":"https:\/\/img.ismap.com\/nimg\/d9\/e2\/d7e2788898023e6c903a2f8a4a7c-200x200-1.jpg","attrs":{"Price":"3000~5000 USD","Brand Name":"SPR-ing","Minimum Order Quantity":"1 piece","Delivery Time":"1~3 weeks","Place of Origin":"Shenzhen","Payment Terms":"L\/C,T\/T","Supply Ability":"500\/month","Packaging Details":"Carton","Refractive Index":"1.5","Application":"Optical Experiments","Prism thickness":"17-20mm","Material":"Glass","Flatness of working face":"Grade 0 (Grade II): \u2264 0.03um","Excircle diameter":"\u03c6 80-\u03c6 150mm","Rotating center aperture":"\u03c625mm","Surface roughness of datum plane":"Ra \u2264 0.05 um"}}

{"cid":"91186847","title":"Glass Aspheric Convex Cylindrical Lens Biconvex Plano Convex Lens Optical","imgUrl":"https:\/\/img.ismap.com\/nimg\/a4\/fc\/a4f9fe560b036884f6b951ceb926-200x200-1.jpg","attrs":{"Price":"Negotiated","Brand Name":"xinland","Model Number":"M9*P0.5*10","Minimum Order Quantity":"10pcs","Delivery Time":"5-8 work days","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T, L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"50000pcs per months","Packaging Details":"300pcs\/carton","Material":"optical glass, coated glass optical lenses","Usage":"Laser diode module lens","Structure":"Collimating Focus Lens","Shape":"Cylindrical","Lens Shape":"aspheric"}}