发明申请
US20220121020A1 ZOOM OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE ZOOM OPTICAL SYSTEM
有权
基本信息:
- 专利标题： ZOOM OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE ZOOM OPTICAL SYSTEM
- 申请号：US17423880 申请日：2019-01-31
- 公开(公告)号：US20220121020A1 公开(公告)日：2022-04-21
- 发明人： Ayumu MAKIDA , Tomoki ITO , Satoshi MIWA
- 申请人： Nikon Corporation
- 申请人地址： JP Minato-ku, Tokyo
- 专利权人： Nikon Corporation
- 当前专利权人： Nikon Corporation
- 当前专利权人地址： JP Minato-ku, Tokyo
- 国际申请： PCT/JP2019/003358 WO 20190131
- 主分类号： G02B15/14
- IPC分类号： G02B15/14
摘要：
A zoom optical system (ZL) comprises, in order from an object: a first lens group (G1) having a positive refractive power; and a second lens group (G2) having a negative refractive power, wherein upon zooming, a distance between the adjacent lens groups changes. The zoom optical system further comprises an aperture stop (S) disposed closer to an image than the second lens group (G2, and satisfies the following conditional expression: 0.10
IPC结构图谱:
| G | 物理 |
| --G02 | 光学 |
| ----G02B | 光学元件、系统或仪器 |
| ------G02B15/00 | 具有改变放大率装置的光学物镜 |
| --------G02B15/14 | .利用一个透镜或多个透镜或透镜组相对于成像平面作轴向移动，以便连续改变物镜的等效焦距 |