High Precision Optical Quartz Glass Convex Lens - 10mm Diameter, 20mm Focal Length, JGS-1 Material
Optical quartz glass convex lens(D12.5;f23)
Optical quartz glass convex lens(D15,f=35.9)
Optical quartz glass convex lens(D16;f40)
Optical quartz glass convex lens(D30,f=39.2)
Quartz glass double convex lens(D25.4;f30)