| 发明名称 |
OPTICAL IMAGING SYSTEM |
| 摘要 |
An optical imaging system according to the present invention includes, in order from an object side to an image side, a first lens with negative refractive power, a second lens that is a meniscus lens having a convex image-side surface, an aperture stop, a third lens with positive refractive power, and a lens group with positive refractive power. When the center thickness of the first lens is represented as t1, the center thickness of the second lens is represented as t2 and the focal length of the whole system is represented as f,;t1/f>1.2 and;t2/f>1.2;are satisfied. |
| 申请公布号 |
US2016320688(A1) |
申请公布日期 |
2016.11.03 |
| 申请号 |
US201615204728 |
申请日期 |
2016.07.07 |
| 申请人 |
NALUX CO., LTD. |
发明人 |
SAKAGAMI Norihisa |
| 分类号 |
G03B11/00;G02B9/34;G02B13/18;G02B9/60 |
主分类号 |
G03B11/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical imaging system comprising, in order from an object side to an image side, a first lens with negative refractive power, a second lens that is a meniscus lens having a convex image-side surface, an aperture stop, a third lens with positive refractive power, and a lens group with positive refractive power, wherein when the center thickness of the first lens is represented as t1, the center thickness of the second lens is represented as t2 and the focal length of the whole system is represented as f,
t1/f>1.2 and t2/f>1.2 are satisfied. |
| 地址 |
Osaka JP |
