| 发明名称 |
OPTICAL SYSTEM AND IMAGING SYSTEM |
| 摘要 |
An optical system, which may include a fish-eye lens including a whole view angle larger than 180 degrees, includes in order from an object-side to an imaging-side, a first lens group including a negative focal distance, an aperture, and a second lens group including a positive focal distance. An infrared cutting coat is coated on a lens surface that includes curvature of a lens among lenses included in the second lens group. |
| 申请公布号 |
US2016266359(A1) |
申请公布日期 |
2016.09.15 |
| 申请号 |
US201615068392 |
申请日期 |
2016.03.11 |
| 申请人 |
AMANO Seiya;Satoh Hiroyuki |
发明人 |
AMANO Seiya;Satoh Hiroyuki |
| 分类号 |
G02B13/06;G02B27/00;G02B5/20 |
主分类号 |
G02B13/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical system comprising:
a fish-eye lens including a whole view angle larger than 180 degrees, including:
in order from an object-side to an imaging-side, a first lens group including a negative focal distance, an aperture, and a second lens group including a positive focal distance, whereinan infrared cutting coat is coated on a lens surface that includes curvature of a lens among lenses included in the second lens group. |
| 地址 |
Kawasaki JP |
