EQUIPMENT USING LENS GIVING NICE PERSPECTIVE

摘要

PROBLEM TO BE SOLVED: To obtain a lens which is used as a single-body or combined lens for an optical machine or other equipment and gives very excellent perspective.;SOLUTION: An arc having a diameter r mm is formed vertically and horizontally from the center of a lens as a midpoint to an equal unit length β mm while having its radius r mm of curvature as a radius, and connected by an arc having a radius r+α mm to a length β mm, and similarly radii are connected by arcs which are each α mm larger, thereby entirely curving the lens vertically and horizontally into a non-arc curve obtained by making a chr curve in a fig. smooth so that respective arcs are all β mm long.;COPYRIGHT: (C)2005,JPO&NCIPI