Min. Order Reference FOB Price
200 Pieces US$5.00-10.00 / Piece
Product Description
plano concave optical lens Product description: plano concave optical glass lens Plano-concave Lenses have one concave surface. It has negative focal length. It is often used to expand light or to increase focal length in existing systems. Specifications: Material: BK7, Fused Silica, SF10, ...