Lenses have many applications ranging from the simple collection of a laser beam to precise imaging and image transfer. Lenses are classified as singlets, doublets and cylindrical lenses. Spherical Singlets include Plano-Convex Lenses, Plano-Concave Lenses, Bi-Convex Lenses, Bi-Concave Lenses, Positive Meniscus and Negative Meniscus. Doublets include Negative Achromatic Doublets and Positive Achromatic Doublets. Cylindrical lenses include Positive Plano Convex and Negative Plano Convex cylinder lenses. If you are unable to find the product that you are looking for in online catalog, please contact our by email.