SMALL OPTICAL SYSTEM WITH WIDE FIELD-OF-VIEW

摘要

The present invention relates to a small optical system with a wide field-of-view, comprising; the first lens having a negative refraction power and a concave shape near a radical axis toward an object becoming more convex toward outskirts with formation of a coating layer on the side face of the object; and the second lens having a positive refraction power and a concave side face of the object with an upper side face of a convex shape; and the third lens having a positive refraction power and both side faces of a concave shape.;COPYRIGHT KIPO 2014