biconcave glasses

{"cid":"91201126","title":"Custom Optical Fused Silica Concave Glass Lens Quartz BK7 Glass Sapphire Convex Ball Lens","imgUrl":"https:\/\/img.chinax.com\/nimg\/bb\/e9\/67fa5348048cbf483e789023ea0d-200x200-1.jpg","attrs":{"Price":"$100.00\/Pieces 10-99 Pieces","Brand Name":"Advance","Model Number":"002","Minimum Order Quantity":"10 Pieces","Place of Origin":"Shanghai, China","Packaging Details":"Vacuum+EVA+Carton","Supply Ability":"10000000 Piece\/Pieces per Month","Material":"Fused Silica Concave Glass Lens Quartz BK7 Glass Sapphire etc","Customized support":"OEM, ODM","Usage":"Convex Ball Lens","Focal length":"Custom","Application area":"Custom Convex Ball Lens","Diameter":"Custom","Diameter tolerance":"+\/-0.005mm","Surface accuracy":"N=1~0.5","Centerthickness tolerance":"+\/-0.001mm","Focal length tolerance":"+\/-1%"}}