Purchase Qty. Reference FOB Price
10-499 pieces US$3.34
500+ pieces US$3.00
Product Description
Product Description Optical Quartz Crystal K9 BK7 Plano Convex Lens Dia:Diameter Tc:Center thickness Te:Edge thickness R:Radius Plano convex lens is a kind of positive lens, its characteristic is that the focal length is positive, one side is a plane, the other side is a convex surface.It ...