meniscus semicircular lens

{"cid":"91201126","title":"Wholesale Other Optics Instruments Super hemisphere Znse Meniscus Spherical Lens","imgUrl":"https:\/\/img.chinax.com\/nimg\/b0\/aa\/480c0a7c2db888a2d5e9b99872a5-200x200-1.jpg","attrs":{"Price":"$10.00\/Pieces 10-99 Pieces","Brand Name":"Advance","Minimum Order Quantity":"10 Pieces","Warranty":"-","Customized support":"OEM, ODM","Place of Origin":"Shanghai, China","Usage":"Optical","Structure":"meniscus lens","Shape":"round","Material":"BK7 and other optical glass,quartz,sapphire,Ge,Si,ZnSe,CaF2 etc","Focal length":"custom","Coating":"upon request","Diameter":"custom","Diameter tolerance":"+\/-0.005mm","Surface accuracy":"N=1~0.5","Centerthickness tolerance":"+\/-0.001mm","Focal length tolerance":"+\/-1%","Surface quality":"10\/5~60\/40","Application area":"Imaging,Lighting,Laser etc","Packaging Details":"Vacuum+EVA+Carton","Port":"shanghai","Supply Ability":"10000000 Piece\/Pieces per Month"}}

{"cid":"91213983","title":"Transparent Spherical Glass Lens ZnSe Negative Meniscus Lens","imgUrl":"https:\/\/img.chinax.com\/nimg\/04\/25\/285ee790e71ddd62f905a51d0960-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"STAR OPTIC","Model Number":"MEN","Minimum Order Quantity":"5pcs","Delivery Time":"Negotiable","Certification":"RoHS, ISO9001","Place of Origin":"Wuhan, China","Payment Terms":"T\/T, Western Union, Paypal","Supply Ability":"50000pcs\/Month","Packaging Details":"Safe and dust-free packing","Product Name":"UVFS Negative Meniscus Lens","Substrate":"UV Fused Silica","Applications":"Minimize Spherical Aberration In Optical Systems","Design Wavelength":"546.1nm","Diameter":"25.4mm","Focal Length":"-100mm t0 -1000mm"}}