A lens device comprising: a ring member that is provided so as to be rotatable with respect to a lens barrel body and slidable in an optical axis direction; and a click mechanism that performs a click operation of the ring member when the ring member is moved to a first slide position or a second slide position, wherein the click mechanism includes: elastic members for click which have one end slidably contacted with the surface of the lens barrel body and include each a convex portion formed on an upper surface of a central portion and wherein a contact portion that is formed along a central portion of an inner circumferential surface of the ring member, comes into contact with the convex portion of the elastic member for click when the ring member is moved to the first slide position or the second slide position to bend the elastic member for click, and rides over the convex portion, characterized in that said elastic members have an arc shape and are provided at a plurality of equally divided positions on the circumference of the lens barrel body and each of which has the other end fixed to the lens barrel body; and that each elastic member has a bending space formed by reducing the thickness of a portion other than both ends. a ring member that is provided so as to be rotatable with respect to a lens barrel body and slidable in an optical axis direction; and a click mechanism that performs a click operation of the ring member when the ring member is moved to a first slide position or a second slide position, wherein the click mechanism includes: elastic members for click which have one end slidably contacted with the surface of the lens barrel body and include each a convex portion formed on an upper surface of a central portion and wherein a contact portion that is formed along a central portion of an inner circumferential surface of the ring member, comes into contact with the convex portion of the elastic member for click when the ring member is moved to the first slide position or the second slide position to bend the elastic member for click, and rides over the convex portion, characterized in that said elastic members have an arc shape and are provided at a plurality of equally divided positions on the circumference of the lens barrel body and each of which has the other end fixed to the lens barrel body; and that each elastic member has a bending space formed by reducing the thickness of a portion other than both ends. elastic members for click which have one end slidably contacted with the surface of the lens barrel body and include each a convex portion formed on an upper surface of a central portion and wherein a contact portion that is formed along a central portion of an inner circumferential surface of the ring member, comes into contact with the convex portion of the elastic member for click when the ring member is moved to the first slide position or the second slide position to bend the elastic member for click, and rides over the convex portion, characterized in that said elastic members have an arc shape and are provided at a plurality of equally divided positions on the circumference of the lens barrel body and each of which has the other end fixed to the lens barrel body; and that each elastic member has a bending space formed by reducing the thickness of a portion other than both ends.