| 发明名称 |
Zoom Lens and Image Pickup Apparatus Using the Same |
| 摘要 |
A zoom lens includes in order from an object side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a first lens component in the predetermined lens unit moves perpendicularly with respect to an optical axis and is fixed at the time of zooming, and a second lens component is disposed, leaving an air space on an image side of the first lens component, and a sign of a refractive power of the second lens component differs from a sign of a refractive power of the first lens component, and the following conditional expression (1) is satisfied.;3.4≦|f1/f3|≦9 (1) |
| 申请公布号 |
US2016349531(A1) |
申请公布日期 |
2016.12.01 |
| 申请号 |
US201615086492 |
申请日期 |
2016.03.31 |
| 申请人 |
OLYMPUS CORPORATION |
发明人 |
Kawamura Kazuteru;Yamada Yasuharu |
| 分类号 |
G02B27/64;G02B15/173;G02B15/20 |
主分类号 |
G02B27/64 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A zoom lens comprising in order from an object side:
a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a third lens unit having a positive refractive power; and a predetermined lens unit which is disposed on an image side of the third lens unit, wherein a distance between the first lens unit and the second lens unit changes to become wider at a telephoto end than the distance at a wide angle end, and a distance between the second lens unit and the third lens unit changes to become narrower at the telephoto end than the distance at the wide angle end, and an aperture stop is disposed on the image side of the second lens unit, and the predetermined lens unit includes a first lens component which is fixed at the time of zooming, and the first lens component moves perpendicularly with respect to an optical axis, for correcting a blur, and a second lens component is disposed, leaving an air space on the image side of the first lens component, and a sign of a refractive power of the second lens component differs from a sign of a refractive power of the first lens component, and the following conditional expression (1) is satisfied;
3.4≦|f1/f3|≦9 (1) where, f1 denotes a focal length of the first lens unit, and f3 denotes a focal length of the third lens unit. |
| 地址 |
Tokyo JP |
