| 发明名称 | Zoom lens and imaging apparatus | ||
| 摘要 | In a zoom lens in which a first lens group having a negative refractive power and a second lens group having a positive refractive power are disposed in order from the object side and zooming is performed by moving the first lens group and the second lens group, the first lens group is formed of a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, disposed in order from the object side. Then, when the focal length of the first lens group is taken as f1 and the focal length of the second lens group is taken as f2, the zoom lens is configured to satisfy a conditional expression give below: 0.00<|f1/f2|<1.04 (1-4). | ||
| 申请公布号 | US8824058(B2) | 申请公布日期 | 2014.09.02 |
| 申请号 | US201414192028 | 申请日期 | 2014.02.27 |
| 申请人 | FUJIFILM Corporation | 发明人 | Saito Hiroki;Cho Michio;Ito Toru |
| 分类号 | G02B15/14 | 主分类号 | G02B15/14 |
| 代理机构 | Young & Thompson | 代理人 | Young & Thompson |
| 主权项 | 1. A zoom lens substantially consisting of a first lens group having a negative refractive power and a second lens group having a positive refractive power, disposed in order from the object side, wherein: zooming is performed by moving the first lens group and the second lens group; the first lens group is substantially composed of a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, and a fourth lens having a positive refractive power; the second lens group is substantially composed of four lenses; and when the focal length of the first lens group is taken as f1 and the focal length of the second lens group is taken as f2, the zoom lens satisfies a conditional expression given below: 0.00<|f1/f2|<1.04 (1-4). | ||
| 地址 | Tokyo JP | ||