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31. 发明授权

US10877241B2 Zoom lens and image pickup apparatus 有权
公开(公告)号：US10877241B2
公开(公告)日：2020-12-29
申请号：US16368591
申请日：2019-03-28
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B9/12 , G02B7/04 , G02B13/06 , G02B13/02
CPC分类号： G02B9/12 , G02B7/04 , G02B13/02 , G02B13/06
摘要： A zoom lens includes, in order from an object side: a positive first unit; a negative second unit; and a rear group. The rear group includes: a positive object-side unit, which is arranged closest to the object side; a negative rear-side unit, which is arranged closest to the image side in the zoom lens; and a negative middle unit, which is arranged adjacent to the rear-side unit and on the object side of the rear-side unit. The first unit, the middle unit, and the rear-side unit are configured to move toward the object side during zooming from a wide angle end. Further, focal lengths of the second unit and the middle unit, movement amounts of the middle unit, the rear-side unit, the object-side unit, and the first unit during zooming from the wide angle end to the telephoto end are each appropriately set.

32. 发明申请

US20200341248A1 OPTICAL SYSTEM AND IMAGING APPARATUS HAVING THE SAME 审中-公开
公开(公告)号：US20200341248A1
公开(公告)日：2020-10-29
申请号：US16847940
申请日：2020-04-14
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B15/14 , G02B9/12
摘要： An optical system includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a positive refractive power, and a third lens unit having a negative refractive power. The second lens unit moves during focusing and a distance between adjacent lens units changes. The second lens unit includes a cemented lens closest to an object. The cemented lens includes a positive lens and a negative lens disposed on the image side of the positive lens. A predetermined condition is satisfied.

33. 发明授权

US10416421B2 Zoom lens and image pickup apparatus including the same 有权
公开(公告)号：US10416421B2
公开(公告)日：2019-09-17
申请号：US15941733
申请日：2018-03-30
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B15/16 , G02B13/02 , G02B13/00 , G02B15/173
摘要： Provided is a zoom lens, including, in order from an object side: a positive first lens unit; a negative second lens unit; an intermediate lens unit including at least one lens unit; a positive (N−1)-th lens unit; and a negative N-th lens unit, in which the (N−1)-th lens unit is configured to move for focusing, and in which a focal length fLM of the intermediate lens unit at a wide angle end, a focal length f(N−1) of the (N−1)-th lens unit, which consists of a single lens element, a focal length fN of the N-th lens unit, a distance DN on an optical axis from a lens surface closest to the object side of the N-th lens unit to a lens surface closest to the image side of the N-th lens unit, and a back focus BFw at the wide angle end are each appropriately set.

34. 发明申请

US20180284406A1 ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME 审中-公开
公开(公告)号：US20180284406A1
公开(公告)日：2018-10-04
申请号：US15941733
申请日：2018-03-30
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B15/16 , G02B13/00 , G02B13/02
CPC分类号： G02B15/16 , G02B13/0045 , G02B13/02 , G02B15/173
摘要： Provided is a zoom lens, including, in order from an object side: a positive first lens unit; a negative second lens unit; an intermediate lens unit including at least one lens unit; a positive (N−1)-th lens unit; and a negative N-th lens unit, in which the (N−1)-th lens unit is configured to move for focusing, and in which a focal length fLM of the intermediate lens unit at a wide angle end, a focal length f(N−1) of the (N−1)-th lens unit, which consists of a single lens element, a focal length fN of the N-th lens unit, a distance DN on an optical axis from a lens surface closest to the object side of the N-th lens unit to a lens surface closest to the image side of the N-th lens unit, and a back focus BFw at the wide angle end are each appropriately set.

35. 发明申请

US20130242414A1 OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS INCLUDING THE SAME 有权
标题翻译：光学系统和图像拾取装置，包括它们
公开(公告)号：US20130242414A1
公开(公告)日：2013-09-19
申请号：US13793092
申请日：2013-03-11
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B3/00
CPC分类号： G02B9/64 , G02B9/62 , G02B13/04 , G02B13/22
摘要： An optical system includes a first lens unit, an aperture stop, and a second lens unit having a positive refractive power. The first lens unit includes a first lens having a negative refractive power and a second lens having a positive refractive power. The second lens unit includes a cemented lens, a fifth lens having a negative refractive power and a concave surface facing an object side, and a sixth lens having a positive refractive power and a convex surface facing an image side. In the cemented lens, a third lens having a positive refractive power and a fourth lens having a negative refractive power are cemented. A distance D1 from an object-side lens surface vertex of the first lens to the aperture stop and a distance Dt from the object-side lens surface vertex of the first lens to an image plane are appropriately set.
摘要翻译：光学系统包括第一透镜单元，孔径光阑和具有正屈光力的第二透镜单元。第一透镜单元包括具有负折光力的第一透镜和具有正屈光力的第二透镜。第二透镜单元包括胶合透镜，具有负屈光力的第五透镜和面向物体侧的凹面，以及具有正折光力的第六透镜和面向图像侧的凸面。在胶合透镜中，具有正屈光力的第三透镜和具有负屈光力的第四透镜粘合。从第一透镜的物体侧透镜表面顶点到孔径光阑的距离D1和从第一透镜的物体侧透镜表面顶点到像面的距离Dt被适当地设定。

36. 发明公开

US20240061225A1 ZOOM LENS 审中-公开
公开(公告)号：US20240061225A1
公开(公告)日：2024-02-22
申请号：US18499948
申请日：2023-11-01
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B15/20 , G02B15/14 , G02B27/00
CPC分类号： G02B15/20 , G02B15/143105 , G02B27/0025
摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative power, and a rear unit having a positive refractive power as a whole and including one or more lens units. A distance between adjacent lens units changes during zooming. The first lens unit includes a first subunit having a positive refractive power and a second subunit disposed on the image side of the first subunit. The first subunit includes a first positive lens having the smallest absolute value of a focal length among lenses included in the first subunit. The second subunit includes a second positive lens and a first negative lens having the smallest absolute value of a focal length among negative lenses included in the second subunit. A predetermined condition is satisfied.

37. 发明授权

US11860348B2 Zoom lens 有权
公开(公告)号：US11860348B2
公开(公告)日：2024-01-02
申请号：US17381872
申请日：2021-07-21
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B15/20 , G02B15/14 , G02B27/00
CPC分类号： G02B15/20 , G02B15/143105 , G02B27/0025
摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative power, and a rear unit having a positive refractive power as a whole and including one or more lens units. A distance between adjacent lens units changes during zooming. The first lens unit includes a first subunit having a positive refractive power and a second subunit disposed on the image side of the first subunit. The first subunit includes a first positive lens having the smallest absolute value of a focal length among lenses included in the first subunit. The second subunit includes a second positive lens and a first negative lens having the smallest absolute value of a focal length among negative lenses included in the second subunit. A predetermined condition is satisfied.

38. 发明授权

US11307382B2 Optical system and image pickup apparatus including the same 有权
公开(公告)号：US11307382B2
公开(公告)日：2022-04-19
申请号：US16692953
申请日：2019-11-22
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto
IPC分类号： G02B9/10 , G02B15/14 , G02B27/00
摘要： An optical system includes, in order from an object side to an image side, a first lens unit having positive refractive power, and a second lens unit having negative refractive power, wherein the first lens unit moves and the second lens unit does not move during focusing, wherein the first lens unit includes a positive lens arranged closest on the object side of the first lens unit, wherein the second lens unit includes three or more lenses including at least two negative lenses, wherein the first lens unit consists of a first subunit having positive refractive power, a second subunit having negative refractive power, and a third subunit having positive refractive power arranged in order from the object side to the image side, and wherein predetermined conditional expressions are satisfied.

39. 发明申请

US20200073082A1 LENS APPARATUS AND CAMERA SYSTEM 审中-公开
公开(公告)号：US20200073082A1
公开(公告)日：2020-03-05
申请号：US16551548
申请日：2019-08-26
申请人： CANON KABUSHIKI KAISHA
发明人： Hideki Sakai , Tadanori Okada , Shunji Iwamoto
IPC分类号： G02B7/09 , G02B15/14 , G02B15/16 , G02B7/02
摘要： The lens apparatus includes an optical system, a voltage transformation unit, and an actuator. A first lens unit of the optical system is moved toward the object side during zooming from a wide-angle end to a telephoto end. The voltage transformation unit includes coils. The actuator is configured to be driven by a voltage output from the voltage transformation unit and to move a part of the lens units in the optical system during focusing. The coil is disposed at a position that is separated from a position of a most object-side surface of the optical system at the wide-angle end, toward the image side by a maximum or more moving amount of the first lens unit, and is closer to the object side than a most image-side surface of the optical system at the wide-angle end.

40. 发明授权

US10353185B2 Conversion lens, and imaging optical system and optical apparatus including conversion lens 有权
公开(公告)号：US10353185B2
公开(公告)日：2019-07-16
申请号：US15707102
申请日：2017-09-18
申请人： CANON KABUSHIKI KAISHA
发明人： Shunji Iwamoto , Shinichiro Saito , Satoshi Maetaki , Takahiro Hatada , Suguru Inoue
IPC分类号： G02B15/163 , G02B9/62 , C03C3/097 , G02B27/00
摘要： A conversion lens having a negative refractive power includes a positive lens GP. The positive lens GP satisfies all the following conditional expressions: 30≤νd≤40, 1.225≤[nd−(14.387/νd)]≤1.276, and 0.4300≤[θgF−(2.9795/νd)]≤0.5010, where νd is an Abbe number of the positive lens GP, θgF is a partial dispersion ratio of the positive lens GP for g-line and F-line, and nd is a refractive index of the positive lens GP for d-line.

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