| 摘要 |
This system has, in order from the object side, a first lens group (G1) having positive refractive power, a second lens group (G2) having negative refractive power, and a third lens group (G3) having positive refractive power. The first lens group (G1) has, in order from the object side, a 1a-th lens group (G1a) and a 1b-th lens group (G1b), the air gap between the 1a-th lens group (G1a) and the 1b-th lens group (G1b) being the largest of the air gaps within the first lens group G1, and satisfying a prescribed conditional expression. In so doing, there are provided an optical system that is compact, well-corrected in terms of various aberrations, and has exceptional optical performance; an optical device; and a method for manufacturing an optical system. |
