| 发明名称 |
IMAGING LENS |
| 摘要 |
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; a fourth lens; a fifth lens; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side. The fourth lens and the fifth lens have a composite focal length f45, and the third lens has an Abbe's number νd3 so that the following conditional expressions are satisfied:;0<f45,;40<νd3<75. |
| 申请公布号 |
US2016313536(A1) |
申请公布日期 |
2016.10.27 |
| 申请号 |
US201514945422 |
申请日期 |
2015.11.18 |
| 申请人 |
OPTICAL LOGIC INC. ;KANTATSU CO., LTD. |
发明人 |
KUBOTA Yoji;KUBOTA Kenichi;HIRANO Hitoshi;FUKAYA Hisao |
| 分类号 |
G02B9/62;G02B27/00;H04N5/225;G02B13/00 |
主分类号 |
G02B9/62 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An imaging lens comprising:
a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; a fourth lens; a fifth lens; and a sixth lens having negative refractive power, arranged in this order from an object side to an image plane side, wherein said fourth lens and said fifth lens have a composite focal length f45, and said third lens has an Abbe's number νd3 so that the following conditional expressions are satisfied:
0<f45,40<νd3<75. |
| 地址 |
Nagano JP |
