Double convex (DCX) lenses have two convex surfaces with equal radii. They have focal points on both sides of the lens; these and the points at twice the focal length are used to locate objects and images. Since both surfaces contribute to the power of biconvex lenses, they have shorter focal length than plano convex (PCX) lenses of equal diameter and surface radius.

Double convex lenses are used in focusing and condensing system applications. They are also used as magnifiers and in image relay applications, and for imaging objects at close conjugates.

Syntec Optics provides double convex lenses under its catalog glass optics offerings. Customer specifications include material, diameter tolerance, thickness tolerance, clear aperture, focal length tolerance, wavelength, surface quality, type of coating etc. In-house optical coating solutions at Syntec Optics save a lot of time and effort for our customers. View specifications and typical sizes tables below for more details on double convex lenses.