| 发明名称 |
IMAGING LENS AND IMAGING APPARATUS EQUIPPED WITH THE IMAGING LENS |
| 摘要 |
An imaging lens substantially includes six lenses, constituted by: a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, a concave surface toward an image side, and at least one inflection point in the surface toward the image side; provided in this order from an object side. The imaging lens satisfies a predetermined conditional formula. |
| 申请公布号 |
US2014368931(A1) |
申请公布日期 |
2014.12.18 |
| 申请号 |
US201414300766 |
申请日期 |
2014.06.10 |
| 申请人 |
FUJIFILM Corporation |
发明人 |
NODA Takayuki;CHO Michio |
| 分类号 |
G02B13/04 |
主分类号 |
G02B13/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An imaging lens substantially consisting of six lenses, including:
a first lens having a negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, a concave surface toward an image side, and at least one inflection point on the surface toward the image side; provided in this order from an object side; the imaging lens satisfying the following conditional formula:
1<f·tan ω/R6r<20 (1) wherein f is the focal length of the entire system, ω is the half angle of view, and R6r is the paraxial radius of curvature of the surface of the sixth lens toward the image side. |
| 地址 |
Tokyo JP |
