Quartz glass double convex lens(D25.4;f30)
Quartz glass double convex lens(D40,f=33)
Glass double convex lens(D20;f17.8)
TGDGFKIAS Glass Prism Optical Glass Lens, 1pc Double Concave Lens Optical Glass K9 Material Diameter 40mm Focal Length -100mm Prism Lens
TGDGFKIAS Glass Prism Optical Glass Lens, 1pc Double Concave Lens Optical Glass K9 Material Diameter 12mm Focal Length -19.3mm Prism Lens
LITAO-XIE, Double Concave Glass Lens 100mm Diameter Optical Glass Large Optics Focal Length -300mm Biconcave Lens 1pc
