| 发明名称 |
IMAGING LENS AND IMAGING APPARATUS INCLUDING THE IMAGING LENS |
| 摘要 |
An imaging lens substantially consists of, in order from an object side, five lenses of a first lens that has a biconvex shape, a second lens that has a negative refractive power, a third lens, a fourth lens that has a positive refractive power, and a fifth lens that has a negative refractive power and has an object side surface and an image side surface which have aspheric shapes. Further, the imaging lens satisfies predetermined conditional expressions. |
| 申请公布号 |
US2015077866(A1) |
申请公布日期 |
2015.03.19 |
| 申请号 |
US201414548864 |
申请日期 |
2014.11.20 |
| 申请人 |
FUJIFILM Corporation |
发明人 |
YONEYAMA Kazuya;KOIKE Kazumi |
| 分类号 |
G02B13/00;G02B13/18 |
主分类号 |
G02B13/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An imaging lens substantially consisting of, in order from an object side, five lenses of:
a first lens that has a biconvex shape; a second lens that has a negative refractive power; a third lens is concave toward the object side; a fourth lens that has a positive refractive power; and a fifth lens that has a negative refractive power and has an object side surface and an image side surface which have aspheric shapes, wherein the fifth lens has a meniscus shape which is convex toward the object side, wherein the following conditional expressions (1), (2) and (4-1) are satisfied:
0<f/f45<0.146 (1),0.927<f/f4<5 (2), andf/f3<0 (4-1), where f is a focal length of a whole system, f45 is a composite focal length of the fourth and fifth lenses, f4 is a focal length of the fourth lens, f3 is a focal length of the third lens. |
| 地址 |
Tokyo JP |
