biconcave glasses

{"cid":"91225647","title":"Customizable K9 Optical Biconcave Lens with AR Coating for Precision Optical Applications","imgUrl":"https:\/\/img.chinax.com\/nimg\/a7\/08\/0079c94c54952eb1eb535857c1fa-200x200-1.jpg","attrs":{"Price":"$1","Brand Name":"Non","Model Number":"LP","Minimum Order Quantity":"1000","Dimensional tolerance":"-0.05~0.1mm","Centering":"30\"~3'","Center thickness":"\u00b10.03~0.1mm","Focal length":"\u00b12%@587.6nm","Place of Origin":"Guangdong, China","Clear aperture":">90%","Surface quality":"60-40 40-20"}}

{"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","Focal length tolerance":"+\/-1%","Place of Origin":"Shanghai, China","Packaging Details":"Vacuum+EVA+Carton","Supply Ability":"10000000 Piece\/Pieces per Month","Application area":"Custom Convex Ball Lens","Diameter tolerance":"+\/-0.005mm","Centerthickness tolerance":"+\/-0.001mm","Focal length":"Custom","Customized support":"OEM, ODM","Surface accuracy":"N=1~0.5","Usage":"Convex Ball Lens","Material":"Fused Silica Concave Glass Lens Quartz BK7 Glass Sapphire etc","Diameter":"Custom"}}