Purchase Qty. Reference FOB Price
100-199 Pieces US$30.00
200-499 Pieces US$27.00
500+ Pieces US$22.00
Product Description
Product Description:The plane concave lens is a spherical surface on one side and a plane surface on the other side. The middle is also thinner than the sides. Plano-concave lenses have a negative focal length and are used to diverge a beam of parallel light. Plano-concave lenses bend parallel ...