SMALL-SIZE AND WIDE FIELD-OF-VIEW OPTICAL SYSTEM

摘要

Disclosed herein is a small-size and wide field-of-view optical system including: a first lens having negative refractive power, having a shape in which it is concave from the vicinity of a near axis to an object side and becomes convex outwardly, and including a coating layer formed on a surface thereof toward the object side; a second lens having positive refractive power and having a shape in which a surface thereof toward the object side is concave and an upper side thereof is convex; and a third lens having positive refractive power and having a shape in which both sides thereof are convex.