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1. 发明申请

US20220214530A1 ZOOM LENS AND IMAGE PICKUP APPARATUS HAVING THE SAME 有权
公开(公告)号：US20220214530A1
公开(公告)日：2022-07-07
申请号：US17567279
申请日：2022-01-03
申请人： CANON KABUSHIKI KAISHA
发明人： Makoto Nakahara , Akira Mizuma
IPC分类号： G02B15/14 , G02B13/02 , G02B13/00
摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit with a positive refractive power, a second lens unit with a negative refractive power, a third lens unit with a positive refractive power, and a fourth lens unit with a positive refractive power. During zooming from a wide-angle end to a telephoto end, the first lens unit moves, the second lens unit is fixed, a distance between the first lens unit and the second lens unit is widened, a distance between the second lens unit and the third lens unit is narrowed, and a distance between the third lens unit and the fourth lens unit is narrowed. The first lens unit includes a positive lens and a negative lens. Each of the second, third, and fourth lens units consists of two lenses or less.

2. 发明授权

US11048068B2 Optical system and image capturing apparatus including the same 有权
公开(公告)号：US11048068B2
公开(公告)日：2021-06-29
申请号：US16194095
申请日：2018-11-16
申请人： CANON KABUSHIKI KAISHA
发明人： Shinichiro Saito , Makoto Nakahara , Suguru Inoue , Akira Mizuma , Masakazu Yamagishi
IPC分类号： G02B13/02 , G03B5/00 , G02B7/08 , G02B15/15 , G02B9/12 , G02B7/04 , G02B27/64
摘要： An optical system is constituted of a first lens unit having a positive refractive power, a second lens unit having a positive refractive power and moving when focusing is performed, and a third lens unit which are arranged in this order from an object side to an image side, and distances between neighboring lens units are changed when focusing is performed. In the optical system, a back focus, arrangement of the second lens unit, and the like are appropriately set.

3. 发明授权

US11150466B2 Optical system and imaging apparatus including the same 有权
公开(公告)号：US11150466B2
公开(公告)日：2021-10-19
申请号：US16192646
申请日：2018-11-15
申请人： CANON KABUSHIKI KAISHA
发明人： Shinichiro Saito , Makoto Nakahara , Suguru Inoue , Akira Mizuma , Masakazu Yamagishi
IPC分类号： G02B27/00
摘要： An optical system includes a first lens unit having positive refractive power, a second lens unit, and a third lens unit having negative refractive power arranged in order from an object side to an image side. The second lens unit moves in focusing, thereby changing a distance between adjacent lens units. The first lens unit includes a positive lens, and the third lens unit includes a negative lens. A focal length of the positive lens, a focal length of the negative lens, a focal length of the third lens unit, and a back focus of the optical system are appropriately set.

4. 发明授权

US11042012B2 Optical system and imaging apparatus including the same 有权
公开(公告)号：US11042012B2
公开(公告)日：2021-06-22
申请号：US16178364
申请日：2018-11-01
申请人： CANON KABUSHIKI KAISHA
发明人： Shinichiro Saito , Makoto Nakahara , Suguru Inoue , Akira Mizuma , Masakazu Yamagishi
IPC分类号： G02B9/12 , G02B13/02 , G02B7/04 , G02B15/16 , G02B27/00 , G02B7/02 , G02B15/14
摘要： An optical system includes a first lens unit B1 having a positive refractive power, a second lens unit B2, and a third lens unit B3 disposed in order from an object side to an image side. The second lens unit B2 moves in focusing so that an interval between adjacent lens units among the first, second, and third lens units changes. The first lens unit B1 includes a positive lens G1p disposed closest to the object side and a negative lens G1n being a closest negative lens with respect to the object side. The optical system satisfies a predetermined condition.

5. 发明申请

US20190162932A1 OPTICAL SYSTEM AND IMAGING APPARATUS INCLUDING THE SAME 审中-公开
公开(公告)号：US20190162932A1
公开(公告)日：2019-05-30
申请号：US16192646
申请日：2018-11-15
申请人： CANON KABUSHIKI KAISHA
发明人： Shinichiro Saito , Makoto Nakahara , Suguru Inoue , Akira Mizuma , Masakazu Yamagishi
IPC分类号： G02B9/12 , G02B27/00
摘要： An optical system includes a first lens unit having positive refractive power, a second lens unit, and a third lens unit having negative refractive power arranged in order from an object side to an image side. The second lens unit moves in focusing, thereby changing a distance between adjacent lens units. The first lens unit includes a positive lens, and the third lens unit includes a negative lens. A focal length of the positive lens, a focal length of the negative lens, a focal length of the third lens unit, and a back focus of the optical system are appropriately set.

6. 发明授权

US11640048B2 Zoom lens and image pickup apparatus and image pickup system having the same 有权
公开(公告)号：US11640048B2
公开(公告)日：2023-05-02
申请号：US17154171
申请日：2021-01-21
申请人： CANON KABUSHIKI KAISHA
发明人： Takeo Mori , Akira Mizuma
IPC分类号： G02B15/14 , H04N23/69 , H04N23/63
摘要： A zoom lens including, in order from object side to image side, first to fourth lens units respectively having positive, negative, positive, and positive refractive powers. During zooming from a wide-angle end to a telephoto end, the first lens unit is arranged to move, the distance between the first lens unit and the second lens unit increases, the distance between the second lens unit and the third lens unit decreases, and the distance between the third lens unit and the fourth lens unit decreases. The second lens unit consists of a first lens having a negative refractive power and a second lens having a positive refractive power, the second lens being disposed on the image side of the first lens. A predetermined condition is satisfied.

7. 发明授权

US11415813B2 Optical system and image capturing apparatus 有权
公开(公告)号：US11415813B2
公开(公告)日：2022-08-16
申请号：US16849878
申请日：2020-04-15
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Mizuma , Takeo Mori
IPC分类号： G02B27/64 , G02B9/60 , G03B5/00 , G02B9/34 , G03B3/00
摘要： An optical system includes an object side lens unit arranged closest to an object, immobilized in focusing, and having a positive refractive power, an image plane side lens unit arranged closest to an image plane and having a negative refractive power, and a first focus lens unit and a second focus lens unit which are arranged between the object side lens unit and the image plane side lens unit and are moved in focusing. The object side lens unit consists of a first partial unit having the negative refractive power, a second partial unit having the positive refractive power, a third partial unit having the positive or the negative refractive power which are arranged in order from an object side to an image plane side. The second partial unit is moved in a direction including a component in a perpendicular direction to an optical axis in image blur correction.

8. 发明授权

US09625688B2 Optical system and imaging apparatus including the same 有权
公开(公告)号：US09625688B2
公开(公告)日：2017-04-18
申请号：US14675430
申请日：2015-03-31
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Mizuma
IPC分类号： G02B27/64 , G02B15/15 , G02B9/64 , G02B13/04 , G02B15/16 , H04N5/232
CPC分类号： G02B15/15 , G02B9/64 , G02B13/04 , G02B15/16 , G02B27/646 , H04N5/23287
摘要： In an optical system in which a focal length of an entire system is shorter than a back focus, an image stabilizing lens unit, is at a position adjacent to an aperture on an image side and a cemented lens obtained by cementing a positive lens and a negative lens is on an object side of the aperture diaphragm, and the focal length of the entire system, a focal length of the image stabilizing lens unit, a focal length of the cemented lens, a distance on the optical axis from the aperture to a lens surface on the object side of the image stabilizing lens unit, and a distance on the optical axis from a first lens surface on a side closest to an object to a final lens surface on a side closest to an image when an infinite-distance object is brought into focus are set.

9. 发明申请

US20150205081A1 OPTICAL SYSTEM AND IMAGING APPARATUS INCLUDING THE SAME 审中-公开
标题翻译：光学系统和成像装置，包括它们
公开(公告)号：US20150205081A1
公开(公告)日：2015-07-23
申请号：US14675430
申请日：2015-03-31
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Mizuma
IPC分类号： G02B15/15 , H04N5/232 , G02B15/16
CPC分类号： G02B15/15 , G02B9/64 , G02B13/04 , G02B15/16 , G02B27/646 , H04N5/23287
摘要： In an optical system in which a focal length of an entire system is shorter than a back focus, an image stabilizing lens unit, is at a position adjacent to an aperture on an image side and a cemented lens obtained by cementing a positive lens and a negative lens is on an object side of the aperture diaphragm, and the focal length of the entire system, a focal length of the image stabilizing lens unit, a focal length of the cemented lens, a distance on the optical axis from the aperture to a lens surface on the object side of the image stabilizing lens unit, and a distance on the optical axis from a first lens surface on a side closest to an object to a final lens surface on a side closest to an image when an infinite-distance object is brought into focus are set.
摘要翻译：在整个系统的焦距比后焦点短的光学系统中，图像稳定透镜单元位于与图像侧的孔相邻的位置，以及通过固定正透镜获得的胶合透镜和负透镜位于孔径光阑的物体侧，整个系统的焦距，图像稳定透镜单元的焦距，胶合透镜的焦距，光轴上的距离从孔到透镜表面在图像稳定透镜单元的物体侧上的距离，以及距离最接近物体的一侧上的第一透镜表面与最远离图像的一侧上的最终透镜表面的第一透镜表面的距离，当无限距离物体被设置为焦点。

10. 发明申请

US20200341288A1 OPTICAL SYSTEM AND IMAGE CAPTURING APPARATUS 审中-公开
公开(公告)号：US20200341288A1
公开(公告)日：2020-10-29
申请号：US16849878
申请日：2020-04-15
申请人： CANON KABUSHIKI KAISHA
发明人： Akira Mizuma , Takeo Mori
IPC分类号： G02B27/64 , G02B9/60 , G03B3/00 , G03B5/00 , G02B9/34
摘要： An optical system includes an object side lens unit arranged closest to an object, immobilized in focusing, and having a positive refractive power, an image plane side lens unit arranged closest to an image plane and having a negative refractive power, and a first focus lens unit and a second focus lens unit which are arranged between the object side lens unit and the image plane side lens unit and are moved in focusing. The object side lens unit consists of a first partial unit having the negative refractive power, a second partial unit having the positive refractive power, a third partial unit having the positive or the negative refractive power which are arranged in order from an object side to an image plane side. The second partial unit is moved in a direction including a component in a perpendicular direction to an optical axis in image blur correction.

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