Optical lens and method of making the same

摘要

A lens includes a center-of-gravity adjusting section in order to prevent the center of gravity of the lens from shifting due to removal of a gate portion formed during molding, thereby providing an optical lens which is easily handled and a method of making the optical lens. An optical lens having a flange at the outer periphery of an optically functioning portion includes a gate-cut section formed by cutting off a part of the flange together with a gate portion, continuously with the flange, and a center-of-axis adjusting section, formed by removing a part of the flange, for positioning the center of gravity in alignment with the optical axis of the optically functioning portion.