公开(公告)号：US20060146420A1

公开(公告)日：2006-07-06

申请号：US10541744

申请日：2004-03-08

申请人： Katsu Yamada

发明人： Katsu Yamada

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A first lens group (G1) fixed with respect to the image plane includes a lens (11) having a negative refractive power, a lens (12) having a positive refractive power and a lens (13) having a positive refractive power. A second lens group (G2) has a negative refractive power as a whole, and causes a zooming action when moved along the optical axis. An aperture stop is fixed with respect to the image plane. A third lens group (G3) includes a lens (31) having a negative refractive power and a lens (32) having a positive refractive power, has a positive or negative refractive power as a whole, and is fixed with respect to the direction of the optical axis when zooming and when focusing. A fourth lens group (G4) has a positive refractive power as a whole, and moves along the optical axis such that the image plane, which is displaced by a movement of the second lens group (G2) along the optical axis and by a movement of the object, is maintained at a constant position with respect to a reference plane. Thus, it is possible to realize a compact and high-image quality small zoom lens that is suitable for three-CCDs.

摘要翻译： 相对于图像平面固定的第一透镜组（G 1）包括具有负折光力的透镜（11），具有正折光力的透镜（12）和具有正折光力的透镜（13）。 第二透镜组（G 2）作为整体具有负折射力，并且当沿着光轴移动时引起变焦动作。 孔径光阑相对于图像平面固定。 第三透镜组（G 3）包括具有负折光力的透镜（31）和具有正折光力的透镜（32），其整体具有正或负折射光焦度，并且相对于方向 当缩放和聚焦时光轴。 第四透镜组（G 4）整体具有正折射力，并且沿着光轴移动，使得通过第二透镜组（G 2）沿着光轴的移动而移位的像平面和通过 物体的移动被保持在相对于参考平面的恒定位置。 因此，可以实现适用于三CCD的紧凑且高质量的小变焦镜头。

公开(公告)号：US06999241B2

公开(公告)日：2006-02-14

申请号：US10505284

申请日：2003-02-24

申请人： Katsu Yamada ,  Keizo Ishiguro ,  Tsuyoshi Kakimoto

发明人： Katsu Yamada ,  Keizo Ishiguro ,  Tsuyoshi Kakimoto

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G02B27/646

摘要： A zoom lens, having a camera shake correction function, that is capable of preventing degradation of chromatic aberration while correcting camera shake, and can be small, light-weight and power-saving, is provided. The zoom lens is composed of four groups of lenses having positive, negative, positive and positive refractive powers, arranged in that order from an object side to an image plane side, where a second lens group conducts zooming and a fourth lens group conducts focus adjustment. The second lens group is made of a concave meniscus lens, a concave lens, a double convex lens, and a concave lens, arranged in that order from the object side to the image plane side, and it includes also at least one aspheric surface. A third lens group includes a cemented lens having a cemented surface whose convex surface faces the object side, and can be shifted in a perpendicular direction with respect to an optical axis in order to correct image fluctuations during a camera shake.

摘要翻译： 提供了具有相机抖动校正功能的变焦镜头，其能够在校正照相机抖动的同时防止色差的劣化，并且可以实现小型，轻量化和省电。 该变焦透镜由具有正，负和正折射光焦度的四组透镜组成，按照从物体侧到像面侧的顺序排列，其中第二透镜组进行变焦，第四透镜组进行焦点调节 。 第二透镜组由从物体侧到像面侧依次排列的凹凹面透镜，凹透镜，双凸透镜和凹透镜制成，并且还包括至少一个非球面。 第三透镜组包括具有凸面朝向物体侧的胶结表面的胶合透镜，并且可以相对于光轴在垂直方向上移动，以便在相机抖动期间校正图像波动。

公开(公告)号：US20050254137A1

公开(公告)日：2005-11-17

申请号：US10505284

申请日：2003-02-24

申请人： Katsu Yamada ,  Keizo Ishiguro ,  Tsuyoshi Kakimoto

发明人： Katsu Yamada ,  Keizo Ishiguro ,  Tsuyoshi Kakimoto

IPC分类号： G02B15/173 ,  G02B27/64 ,  G02B15/14

CPC分类号： G02B15/173 ,  G02B27/646

摘要： A zoom lens, having a camera shake correction function, that is capable of preventing degradation of chromatic aberration while correcting camera shake, and can be small, light-weight and power-saving, is provided. The zoom lens is composed of four groups of lenses having positive, negative, positive and positive refractive powers, arranged in that order from an object side to an image plane side, where a second lens group conducts zooming and a fourth lens group conducts focus adjustment. The second lens group is made of a concave meniscus lens, a concave lens, a double convex lens, and a concave lens, arranged in that order from the object side to the image plane side, and it includes also at least one aspheric surface. A third lens group includes a cemented lens having a cemented surface whose convex surface faces the object side, and can be shifted in a perpendicular direction with respect to an optical axis in order to correct image fluctuations during a camera shake.

摘要翻译： 提供了具有相机抖动校正功能的变焦镜头，其能够在校正照相机抖动的同时防止色差的劣化，并且可以实现小型，轻量化和省电。 该变焦透镜由具有正，负和正折射光焦度的四组透镜组成，按照从物体侧到像面侧的顺序排列，其中第二透镜组进行变焦，第四透镜组进行焦点调节 。 第二透镜组由从物体侧到像面侧依次排列的凹凹面透镜，凹透镜，双凸透镜和凹透镜制成，并且还包括至少一个非球面。 第三透镜组包括具有凸面朝向物体侧的胶结表面的胶合透镜，并且可以相对于光轴在垂直方向上移动，以便在相机抖动期间校正图像波动。

公开(公告)号：US08432618B2

公开(公告)日：2013-04-30

申请号：US12669587

申请日：2008-07-23

申请人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

发明人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G03B5/00

摘要： A zoom lens system according to the present invention, from an object side, comprises a first lens unit having positive optical power, a second lens unit having negative optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optical power. In zooming, the first to the fourth units all move along the optical axis. The third lens unit is composed of three or more lens elements. The condition (6): nd8≦1.5 and vd8≧75 and the condition (7): (nd9−1)+(nd10−1)≧1.55 are satisfied (where, 16 35, and in the third lens unit: nd8, nd9, nd10 are refractive indices to the d-line of the lens elements located on the most object side and at the second and the third positions from the object side; vd8 is an Abbe number to the d-line of the lens element on the most object side; ω is a half view angle at a wide-angle limit; fT is a focal length of the entire system at a telephoto limit; and fW is a focal length of the entire system at a wide-angle limit). As a result, the zoom lens system has a reduced size and still realizes a wide view angle at a wide-angle limit, as well as a remarkably high zooming ratio and high performance.

摘要翻译： 根据本发明的变焦透镜系统，从物体侧，包括具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，具有正光焦度的第三透镜单元，以及具有正光焦度的第四透镜单元 光功率 在变焦时，第一至第四单元都沿光轴移动。 第三透镜单元由三个或更多个透镜元件组成。 条件（6）：nd8@1.5和vd8> = 75，满足条件（7）：（nd9-1）+（nd10-1）> = 1.55（其中，16

公开(公告)号：US08212913B2

公开(公告)日：2012-07-03

申请号：US12676048

申请日：2008-09-11

申请人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

发明人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

IPC分类号： H04N5/225

CPC分类号： G02B15/173

摘要： A zoom lens system according to the present invention, from an object side to an image side, comprises a first lens unit having positive optical power, a second lens unit having negative optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optical power. In zooming, the first to the fourth lens units all move along the optical axis. The conditions (1): 0 35; ω is a half view angle at a wide-angle limit; LW is an overall optical axial length of the entire system at a wide-angle limit; f3 is a focal length of the third lens unit; f4 is a focal length of the fourth lens unit; fT is a focal length of the entire system at a telephoto limit; and fW is a focal length of the entire system at a wide-angle limit). As a result, the zoom lens system has a reduced size and still realizes a wide view angle at a wide-angle limit, as well as a remarkably high zooming ratio and high performance.

摘要翻译： 根据本发明的变焦透镜系统，从物体侧到像侧包括具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，具有正光焦度的第三透镜单元，以及第四透镜单元 具有正光焦度的透镜单元。 在变焦中，第一至第四透镜单元全部沿光轴移动。 满足条件（1）：0 <√（f4·fW·tanω）/ LW <0.13和（2）：0.05＆nlE; f3 / f4＆nlE; 0.97（其中，16 35;ω 是广角限制的半视角; LW是整个系统的广角范围的整体光学轴向长度; f3是第三透镜单元的焦距; f4是第四透镜的焦距 单位; fT是整个系统在远摄极限的焦距; fW是整个系统在广角限制下的焦距）。 结果，变焦透镜系统具有减小的尺寸，并且在广角限制下仍然实现宽视角，以及非常高的变焦比和高性能。

公开(公告)号：US08004585B2

公开(公告)日：2011-08-23

申请号：US12416531

申请日：2009-04-01

申请人： Kyoichi Miyazaki ,  Katsu Yamada ,  Takuya Imaoka ,  Masaki Sampei

发明人： Kyoichi Miyazaki ,  Katsu Yamada ,  Takuya Imaoka ,  Masaki Sampei

IPC分类号： H04N5/232 ,  G02B15/00

CPC分类号： G02B15/17 ,  G02B27/646

摘要： A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system according to the present invention comprises: a positive lens unit that is arranged on an object side relative to the aperture diaphragm; a negative lens unit that is arranged on an image side relative to the positive lens unit and on an object side relative to the aperture diaphragm; and a focusing lens unit that is arranged in an optical path between the negative lens unit and the aperture diaphragm. The zoom lens system satisfies the condition (4): 1.20 3.0, βNT(βNW): a composite focal length of the focusing lens unit and the negative lens unit in an infinity in-focus condition at a telephoto (wide-angle) limit when the focusing lens unit has negative optical power, or a lateral magnification of the negative lens unit at a telephoto limit in an infinity in-focus condition when the focusing lens unit has positive optical power, fT: a focal length of the entire system at a telephoto limit, fW: a focal length of the entire system at a wide-angle limit.

摘要翻译： 提供一种变焦透镜系统，其包括紧凑构造的聚焦透镜单元，并且在聚焦透镜单元移动时具有抑制的图像放大率的变化。 根据本发明的变焦透镜系统包括：相对于孔径光阑布置在物体侧的正透镜单元; 负透镜单元，其相对于所述正透镜单元布置在图像侧，并且在物体侧相对于所述孔径光阑; 以及配置在负透镜单元和孔径光阑之间的光路中的聚焦透镜单元。 变焦透镜系统满足条件（4）：1.20 3.0，＆bgr; NT（＆bgr; NW）：聚焦透镜单元的复合焦距 在聚焦透镜单元具有负光焦度时在长焦（广角）极限处于无限远对焦状态的负透镜单元，或在无限远对焦条件下的远距离处的负透镜单元的横向放大率 当聚焦透镜单元具有正光焦度时，fT：在远摄极限处整个系统的焦距，fW：整个系统的广角范围的焦距。

公开(公告)号：US20100194929A1

公开(公告)日：2010-08-05

申请号：US12676048

申请日：2008-09-11

申请人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

发明人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

IPC分类号： H04N5/262 ,  G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens system according to the present invention, from an object side to an image side, comprises a first lens unit having positive optical power, a second lens unit having negative optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optical power. In zooming, the first to the fourth lens units all move along the optical axis. The conditions (1): 0 35; ω is a half view angle at a wide-angle limit; LW is an overall optical axial length of the entire system at a wide-angle limit; f3 is a focal length of the third lens unit; f4 is a focal length of the fourth lens unit; fT T is a focal length of the entire system at a telephoto limit; and fW is a focal length of the entire system at a wide-angle limit). As a result, the zoom lens system has a reduced size and still realizes a wide view angle at a wide-angle limit, as well as a remarkably high zooming ratio and high performance.

摘要翻译： 根据本发明的变焦透镜系统，从物体侧到像侧包括具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，具有正光焦度的第三透镜单元，以及第四透镜单元 具有正光焦度的透镜单元。 在变焦中，第一至第四透镜单元全部沿光轴移动。 满足条件（1）：0 <√（f4·fW·tanω）/ LW <0.13和（2）：0.05＆nlE; f3 / f4＆nlE; 0.97（其中，16 35;ω 是广角限制的半视角; LW是整个系统的广角范围的整体光学轴向长度; f3是第三透镜单元的焦距; f4是第四透镜的焦距 单位; fT T是整个系统在远摄极限处的焦距; fW是整个系统在广角极限处的焦距）。 结果，变焦透镜系统具有减小的尺寸，并且在广角限制下仍然实现宽视角，以及非常高的变焦比和高性能。

公开(公告)号：US20100182491A1

公开(公告)日：2010-07-22

申请号：US12669587

申请日：2008-07-23

申请人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

发明人： Keiki Yoshitsugu ,  Katsu Yamada ,  Shunichiro Yoshinaga

IPC分类号： H04N5/232 ,  G02B15/14 ,  G02B27/64

CPC分类号： G02B15/173 ,  G03B5/00

摘要： A zoom lens system according to the present invention, from an object side, comprises a first lens unit having positive optical power, a second lens unit having negative optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optical power. In zooming, the first to the fourth units all move along the optical axis. The third lens unit is composed of three or more lens elements. The condition (6): nd8≦1.5 and vd8≧75 and the condition (7): (nd9−1)+(nd10−1)≧1.55 are satisfied (where, 16 35, and in the third lens unit: nd8, nd9, nd10 are refractive indices to the d-line of the lens elements located on the most object side and at the second and the third positions from the object side; vd8 is an Abbe number to the d-line of the lens element on the most object side; ω is a half view angle at a wide-angle limit; fT is a focal length of the entire system at a telephoto limit; and fW is a focal length of the entire system at a wide-angle limit). As a result, the zoom lens system has a reduced size and still realizes a wide view angle at a wide-angle limit, as well as a remarkably high zooming ratio and high performance.

摘要翻译： 根据本发明的变焦透镜系统，从物体侧，包括具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，具有正光焦度的第三透镜单元，以及具有正光焦度的第四透镜单元 光功率 在变焦时，第一至第四单元都沿光轴移动。 第三透镜单元由三个或更多个透镜元件组成。 条件（6）：nd8＆nlE; 1.5和vd8≥75以及条件（7）：（nd9-1）+（nd10-1）≥1.55（其中，16 35，并且 第三透镜单元nd8，nd9，nd10是位于物体侧的最物体侧和第二和第三位置的透镜元件的d线的折射率; vd8是与d相对应的阿贝数， 最大物体侧的透镜元件的线;ω是广角限制的半视角; fT是整个系统在远摄极限处的焦距; fW是整个系统的焦距 广角限制）。 结果，变焦透镜系统具有减小的尺寸，并且在广角限制下仍然实现宽视角，以及非常高的变焦比和高性能。

公开(公告)号：US20100177217A1

公开(公告)日：2010-07-15

申请号：US12676231

申请日：2008-09-11

申请人： Katsu Yamada ,  Keiki Yoshitsugu ,  Shunichiro Yoshinaga

发明人： Katsu Yamada ,  Keiki Yoshitsugu ,  Shunichiro Yoshinaga

IPC分类号： H04N5/262 ,  G02B15/14

CPC分类号： G02B15/173 ,  G02B13/12

摘要： A zoom lens system according to the present invention, from an object side to an image side, comprises a first lens unit having positive optical power, a second lens unit having negative optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optical power. In zooming, the first to the fourth lens units all move along the optical axis. The condition (8): 0.15 35; dG3 is an optical axial center thickness of the third lens unit; dG is a sum of the optical axial thicknesses of the first to the fourth lens units; ω is a half view angle at a wide-angle limit; fT is a focal length of the entire system at a telephoto limit; and fW is a focal length of the entire system at a wide-angle limit). As a result, the zoom lens system has a reduced size and still realizes a wide view angle at a wide-angle limit, as well as a remarkably high zooming ratio and high performance.

摘要翻译： 根据本发明的变焦透镜系统，从物体侧到像侧包括具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，具有正光焦度的第三透镜单元，以及第四透镜单元 具有正光焦度的透镜单元。 在变焦中，第一至第四透镜单元全部沿光轴移动。 满足条件（8）：0.15 35; dG3是第三透镜单元的光轴向中心厚度; dG是光轴向厚度之和 的第一到第四透镜单元的角度;ω是广角限制的半视角; fT是整个系统在远摄极限处的焦距; fW是整个系统在宽视角下的焦距， 角度限制）。 结果，变焦透镜系统具有减小的尺寸，并且在广角限制下仍然实现宽视角，以及非常高的变焦比和高性能。

公开(公告)号：US20100091173A1

公开(公告)日：2010-04-15

申请号：US12416475

申请日：2009-04-01

申请人： Kyoichi Miyazaki ,  Katsu Yamada ,  Takuya Imaoka ,  Masaki Sampei

发明人： Kyoichi Miyazaki ,  Katsu Yamada ,  Takuya Imaoka ,  Masaki Sampei

IPC分类号： H04N5/232 ,  G02B15/14

CPC分类号： G02B15/17 ,  G02B27/646 ,  H04N5/23248

摘要： A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system, in order from an object side to an image side, comprises at least: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having negative optical power; and an aperture diaphragm. At the time of zooming, the zoom lens system moves the first to third lens units so that intervals between these lens units vary. At the time of focusing from an infinity in-focus condition to a close-point object in-focus condition, the zoom lens system moves the third lens unit to the object side.

摘要翻译： 提供一种变焦透镜系统，其包括紧凑构造的聚焦透镜单元，并且在聚焦透镜单元移动时具有抑制的图像放大率的变化。 变焦透镜系统从物体侧到像侧依次包括至少：具有正光焦度的第一透镜单元; 具有负光焦度的第二透镜单元; 具有负光焦度的第三透镜单元; 和孔径光阑。 在变焦时，变焦透镜系统移动第一至第三透镜单元，使得这些透镜单元之间的间隔变化。 在从无限远对焦状态聚焦到近距离物体对焦状态时，变焦透镜系统将第三透镜单元移动到物体侧。