| 发明名称 |
IMAGING LENS AND IMAGING APPARATUS |
| 摘要 |
An imaging lens composed of a positive first lens group, an aperture stop, a negative second lens group, and a positive third lens group disposed in order from the object side. The first lens group includes one negative lens and one positive lens disposed in order from the object side. The second lens group includes one negative lens and one positive lens, has at least one aspherical surface, and is composed of three lenses or less, in which the most object side surface and the most image side surface of the second lens group are concave and convex surfaces respectively. The third lens group is composed of a negative lens with a concave surface on the object side and one or more positive lenses disposed in order from the object side. |
| 申请公布号 |
US2016011404(A1) |
申请公布日期 |
2016.01.14 |
| 申请号 |
US201514859452 |
申请日期 |
2015.09.21 |
| 申请人 |
FUJIFILM Corporation |
发明人 |
SUZUKI Takashi |
| 分类号 |
G02B13/00;G02B5/00;G02B27/00;G02B9/64 |
主分类号 |
G02B13/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An imaging lens composed of a first lens group having a positive refractive power, an aperture stop, a second lens group having a negative refractive power, and a third lens group having a positive refractive power disposed in order from the object side, wherein:
the first lens group includes one negative lens and one positive lens disposed in order from the object side; the second lens group is composed of three lenses or less, includes one negative lens and one positive lens, and has at least one aspherical surface, wherein the most object side surface of the second lens group is a concave surface and the most image side surface of the second lens group is a convex surface; and the third lens group is composed of one negative lens with a concave surface on the object side and one or more positive lenses disposed in order from the object side. |
| 地址 |
Tokyo JP |
