| 发明名称 | Imaging lens and imaging apparatus | ||
| 摘要 | An imaging lens consists of a front group having positive refractive power as a whole and a rear group in this order from an object side. The front group consists of three positive lenses, a negative lens with its concave surface facing an image side, a positive lens with its convex surface facing the object side, a negative lens with its concave surface facing the image side, a stop, a negative lens with its concave surface facing the object side and plural positive lenses in this order from the object side. The rear group has positive refractive power and consists of a positive lens and a negative lens in this order from the object side. | ||
| 申请公布号 | US9612426(B2) | 申请公布日期 | 2017.04.04 |
| 申请号 | US201514625056 | 申请日期 | 2015.02.18 |
| 申请人 | FUJIFILM Corporation | 发明人 | Kanda Hideo;Baba Tomoyuki;Suzuki Takashi;Cho Michio |
| 分类号 | G02B15/14;G02B15/16;G02B9/64;G02B13/16 | 主分类号 | G02B15/14 |
| 代理机构 | Young & Thompson | 代理人 | Young & Thompson |
| 主权项 | 1. An imaging lens consisting of: a front group having positive refractive power as a whole; and a rear group in this order from an object side, wherein the front group consists of two or three positive lenses, a negative lens with its concave surface facing an image side, a positive lens with its convex surface facing the object side, a negative lens with its concave surface facing the image side, a stop, a negative lens with its concave surface facing the object side and a plurality of positive lenses in this order from the object side, wherein the front group satisfies the following conditional expression: 0.6<f/f1<1.0 (3), where f: a focal length of an entire system, and f1: a focal length of the front group and wherein the rear group has positive refractive power and consists of a positive lens and a negative lens in this order from the object side. | ||
| 地址 | Tokyo JP | ||