Purchase Qty. Reference FOB Price
10-99 pieces US$5.00
100+ pieces US$4.50
Product Description
Specification Plano convex lens Plano concave lens have a negative focal length and are used to scatter a parallel beam of light.plano concave lens is one side of a sphere and one side of a plano.The middle is thinner than the sides.Select materials reasonably (texture, bubble, impurity, ...