| 摘要 |
PURPOSE: A compact zoom optical system is provided to be miniaturized and reduce production costs by having a satisfactory performance in a magnification ratio, a view angle, or aberration, etc. CONSTITUTION: A first lens group(G1) includes a first lens(111) and a second lens(112). The first lens and the second lens have a negative refractive power. A third lens(113) and a fourth lens(114) generally have a positive refractive power in order. A second lens group(G2) includes a fifth lens(115) and a sixth lens(116). The fifth lens has the negative refractive power. The sixth lens has the positive refractive power. |
