| 摘要 |
The present invention has, from the object side, a first lens group (G1) having negative refractive power, a second lens group (G2) having positive refractive power, a third lens group (G3) having negative refractive power, a fourth lens group (G4) having positive refractive power, a fifth lens group (G5) having negative refractive power, and a sixth lens (G6) group having positive refractive power, the air gap between mutually adjacent lens groups (G1 to G6) being varied during variable power to satisfy a predetermined conditional expression. The present invention thereby provides a variable-power optical system provided with excellent optical performance, an optical device, and a method for manufacturing a variable-power optical system. |
