| 发明名称 | Imaging lens and imaging apparatus equipped with the same | ||
| 摘要 | An imaging lens consists of a front group and a rear group. The front group is composed of a lens having a negative meniscus shape with a convex surface on the object side, a negative lens, a negative lens, and a positive lens in order from the object side. The rear group is composed of a positive lens, a negative lens, a positive lens, and a positive lens in order from the object side. The imaging lens satisfies given conditional expressions. | ||
| 申请公布号 | US9494770(B2) | 申请公布日期 | 2016.11.15 |
| 申请号 | US201514627149 | 申请日期 | 2015.02.20 |
| 申请人 | FUJIFILM Corporation | 发明人 | Sun Ping;Tsutsumi Katsuhisa;Cho Michio |
| 分类号 | G02B9/04;G02B9/62;G02B9/64;G02B13/04;G02B13/00 | 主分类号 | G02B9/04 |
| 代理机构 | Young & Thompson | 代理人 | Young & Thompson |
| 主权项 | 1. An imaging lens, consisting essentially of a front group and a rear group in order from the object side, wherein: the front group consists essentially of a negative meniscus lens with a convex surface on the object side, a negative lens, a negative lens, and a positive lens in order from the object side; the rear group consists essentially of a positive lens, a negative lens, a positive lens, and a positive lens in order from the object side; and the imaging lens satisfies conditional expressions (1) and (4) given below: 0.42<f/f2<1.0 (1), and−0.065<f/f1<0.10 (4)where f: focal length of the entire system, f1: focal length of the front group, and f2: focal length of the rear group. | ||
| 地址 | Tokyo JP | ||