| 摘要 |
A zooming optical system that is compact and has high zooming ratio and superb optical performance, optical system and a method for manufacturing the zooming optical system, are provided. The zooming optical system includes, in order from an object along the optical axis, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens group G3 having positive refractive power, a fourth lens group G4 having negative refractive power, and a fifth lens group G5 having negative refractive power, and upon zooming from a wide angle end state to a telephoto end state, a distance between the first lens group G1 and the second lens group G2, a distance between the second lens group G2 and the third lens group G3, a distance between the third lens group G3 and the fourth lens group G4, and a distance between the fourth lens group G4 and the fifth lens group G5, being respectively varied. |
