公开(公告)号：US07280284B2

公开(公告)日：2007-10-09

申请号：US11219781

申请日：2005-09-07

Applicant: Atsujiro Ishii

Inventor： Atsujiro Ishii

IPC: G02B15/14

CPC classification number: G02B15/177 ,  G02B13/06

Abstract: A zoom lens comprises, in order from an object side to an image side, a lens group having negative refracting power, and a lens group having positive refracting power. Zooming is carried out with a change in a space between at least said two lens groups. The lens group having negative refracting power comprises a plurality of aspheric surfaces. The lens group having positive refracting power comprises at least one aspherie surface. The lens group having negative refracting power comprises at least three negative lenses, with satisfaction of the following condition: 2.3

Abstract translation: 变焦透镜从物体侧到像侧依次包括具有负折射力的透镜组和具有正折射率的透镜组。 在至少所述两个透镜组之间的空间变化的情况下进行变焦。 具有负折射力的透镜组包括多个非球面。 具有正折射力的透镜组包括至少一个平板表面。 具有负折射力的透镜组包括至少三个负透镜，满足以下条件：2.3 2 1 是具有负折射率的所述透镜组的焦距，并且f 2是具有正折射率的所述透镜组的焦距。

公开(公告)号：US06185048B2

公开(公告)日：2001-02-06

申请号：US09172263

申请日：1998-10-14

Applicant: Atsujiro Ishii ,  Yuji Miyauchi

Inventor： Atsujiro Ishii ,  Yuji Miyauchi

IPC: G02B1514

CPC classification number: G02B15/173

Abstract: The invention provides a zoom lens system that is reduced in terms of both size and cost. The zoom lens system comprises a first positive lens group G1, a second negative lens group G2, a stop S, a third positive lens group G3 and a fourth positive lens group G4. During zooming from a wide-angle end to a telephoto end of the system, while the first lens group G1 remains fixed, the second lens group G2 moves from an object side to an image plane side of the system, the third lens group G3 moves from the image plane side to the object side, and the fourth lens group G4 moves to keep an image plane at a constant position. The first lens group G1 is made up of a negative meniscus lens convex on an object side and a double-convex lens, the second lens group G2 is made up of a double-concave lens and a positive meniscus lens convex on an object side thereof, with an aspherical surface being used for a surface of the positive meniscus lens that is located on an image side thereof, the third lens group G3 is made up of a double-convex lens and a negative meniscus lens convex on an object side thereof, with an aspherical surface being used for a surface of the double-convex lens that is located on an object side thereof, and the fourth lens group G4 is made up of one double-convex lens.

Abstract translation: 本发明提供一种在尺寸和成本方面减小的变焦透镜系统。 变焦透镜系统包括第一正透镜组G1，第二负透镜组G2，光阑S，第三正透镜组G3和第四正透镜组G4。 在从广角端到远摄端的变焦期间，当第一透镜组G1保持固定时，第二透镜组G2从物体侧移动到系统的像面侧，第三透镜​​组G3移动 从图像平面侧到物体侧，并且第四透镜组G4移动以使图像平面保持在恒定位置。 第一透镜组G1由物体侧凸起的负弯月形透镜和双凸透镜构成，第二透镜组G2由双凹透镜和物镜侧凸起的正弯月形透镜构成 第一透镜组G3由位于其像侧的正弯月透镜的表面用非球面构成，第三透镜​​组G3由物镜侧凸起的双凸透镜和负凹凸透镜构成， 其中非球面用于位于物体侧的双凸透镜的表面，第四透镜组G4由一个双凸透镜构成。

公开(公告)号：US6064531A

公开(公告)日：2000-05-16

申请号：US985931

申请日：1997-12-05

Applicant: Atsujiro Ishii ,  Noriyuki Iyama

Inventor： Atsujiro Ishii ,  Noriyuki Iyama

IPC: G02B13/18 ,  G02B1/04 ,  G02B15/163 ,  G02B15/20 ,  G02B15/14

CPC classification number: G02B15/163

Abstract: A zoom lens system for use on compact cameras, which has a high zoom ratio, is provided at a minimum cost. The zoom lens system comprises a first positive lens group G1, a second positive lens group G2 and a third negative lens group G3 with a focal length of the system varied with changes in spacings between the lens groups. The first lens group G1 comprises one positive lens and one negative lens, and the third lens group G3 consists of one negative plastic lens. The zoom lens system satisfies1

Abstract translation: 以最小的成本提供了具有高变焦比的小型照相机上使用的变焦透镜系统。 变焦透镜系统包括第一正透镜组G1，第二正透镜组G2和具有系统的焦距的第三负透镜组G3随着透镜组之间的间隔的变化而变化。 第一透镜组G1包括一个正透镜和一个负透镜，并且第三透镜组G3由一个负塑料透镜组成。 变焦透镜系统满足1 <（r2F + r2R）/（r2F-r2R）<6其中，r2F是面向系统的物体侧的第一透镜组中的负透镜的表面的曲率半径，r2R是镭 第一透镜组中的负透镜的面向系统的像侧的曲率。

公开(公告)号：US20120092776A1

公开(公告)日：2012-04-19

申请号：US13311314

申请日：2011-12-05

Applicant: Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

Inventor： Shinichi Mihara ,  Hirokazu Konishi ,  Toyoharu Hanzawa ,  Masahito Watanabe ,  Atsujiro Ishii ,  Tetsuhide Takeyama ,  Ayami Imamura

IPC: G02B15/14

CPC classification number: G02B13/0065 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/007 ,  G02B13/0075 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/23238 ,  H04N5/23296

Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.

Abstract translation: 本发明涉及一种电子摄像系统，其深度尺寸极大地降低，利用可以克服施加在变焦可移动透镜组的移动的条件的光学系统类型，同时保持高规格和性能。 电子摄像系统包括：光路弯曲变焦光学系统，其从物体侧依次包括第一透镜组G1-1，其包括负透镜组和用于弯曲光路的反射光学元件P， 包括一个正透镜的第1-2透镜组G1-2和具有正折射光焦度的第二透镜组G2。 为了从广角端到望远端的放大，第二透镜组G2仅向物体侧移动。 电子摄像系统还包括位于变焦光学系统的像侧的电子摄像装置I。

公开(公告)号：US08081392B2

公开(公告)日：2011-12-20

申请号：US12954095

申请日：2010-11-24

Applicant: Atsujiro Ishii ,  Yoshiaki Shimizu

Inventor： Atsujiro Ishii ,  Yoshiaki Shimizu

IPC: G02B15/15 ,  G02B15/14

CPC classification number: G02B15/173

Abstract: The invention relates to a new mechanism for permitting a zoom lens to focus on a short distance subject by moving a focusing lens group in an amount that varies in an optical axis direction depending on a zooming position. The zoom lens comprises, in order from its object side, a positive first lens group, a negative second lens group and a positive third lens group. Zooming is implemented while the space between adjoining lens groups is varied, and focusing on a short distance subject is implemented by moving the negative second lens group in an amount that varies in the optical axis direction depending on a zooming position. The negative second lens group comprises a negative front unit G2F and a negative rear unit G2R. The space between the negative front unit G2F and the negative rear unit G2R is varied depending on a subject distance but that space remains constant wherever the zooming position lies.

Abstract translation: 本发明涉及一种新的机构，用于允许变焦镜头通过沿着在光轴方向上变化的量根据变焦位置移动聚焦透镜组来聚焦在短距离物体上。 变焦透镜从其物体侧依次包括正的第一透镜组，负的第二透镜组和正的第三透镜组。 在相邻透镜组之间的空间变化的同时进行变焦，并且通过使负的第二透镜组以在光轴方向上变化的量根据变焦位置的移动来实现对短距离被摄体的聚焦。 负第二透镜组包括负前单元G2F和负后单元G2R。 负前置单元G2F和负侧后置单元G2R之间的空间根据被摄体距离而变化，但是在缩放位置所在的位置保持恒定。

公开(公告)号：US20110069396A1

公开(公告)日：2011-03-24

申请号：US12954095

申请日：2010-11-24

Applicant: Atsujiro ISHII ,  Shimizu Yoshiaki

Inventor： Atsujiro ISHII ,  Shimizu Yoshiaki

IPC: G02B15/22 ,  G02B7/105

CPC classification number: G02B15/173

Abstract: The invention relates to a new mechanism for permitting a zoom lens to focus on a short distance subject by moving a focusing lens group in an amount that varies in an optical axis direction depending on a zooming position. The zoom lens comprises, in order from its object side, a positive first lens group, a negative second lens group and a positive third lens group. Zooming is implemented while the space between adjoining lens groups is varied, and focusing on a short distance subject is implemented by moving the negative second lens group in an amount that varies in the optical axis direction depending on a zooming position. The negative second lens group comprises a negative front unit G2F and a negative rear unit G2R. The space between the negative front unit G2F and the negative rear unit G2R is varied depending on a subject distance but that space remains constant wherever the zooming position lies.

Abstract translation: 本发明涉及一种新的机构，用于允许变焦镜头通过沿着在光轴方向上变化的量根据变焦位置移动聚焦透镜组来聚焦在短距离物体上。 变焦透镜从其物体侧依次包括正的第一透镜组，负的第二透镜组和正的第三透镜组。 在相邻透镜组之间的空间变化的同时进行变焦，并且通过使负的第二透镜组以在光轴方向上变化的量根据变焦位置的移动来实现对短距离被摄体的聚焦。 负第二透镜组包括负前单元G2F和负后单元G2R。 负前置单元G2F和负侧后置单元G2R之间的空间根据被摄体距离而变化，但是在缩放位置所在的位置保持恒定。

公开(公告)号：US07450319B2

公开(公告)日：2008-11-11

申请号：US11900379

申请日：2007-09-10

Applicant: Atsujiro Ishii ,  Hirohiko Kimata

Inventor： Atsujiro Ishii ,  Hirohiko Kimata

IPC: G02B15/14 ,  G02B9/00 ,  G02B9/14

CPC classification number: G02B15/173

Abstract: The invention relates to a zoom lens in which tweaks to the mode of movement of lens groups and the first lens group contribute more to making sure the desired zoom ratio and optical performances and ensuring that the whole length of the zoom lens is kept short while carrying it around. The zoom lens comprises a positive first lens group G1, a negative second lens group G2 and a positive third lens group G3, and includes an aperture stop S located between the second G2 and the third lens group G3. Upon zooming from the wide-angle end to the telephoto end, the first lens group G1 moves in unison, and the second lens group G2 moves in unison. The first G1 and the second lens group G2 are positioned nearer to the object side at the telephoto end than at the wide-angle end, with an increasing spacing between the first G1 and the second lens group G2 and a decreasing spacing between the second G2 and the third lens group G3. The zoom lens satisfies conditions (1) and (2) about the power and the amount of movement of the first lens group G1.

Abstract translation: 本发明涉及一种变焦透镜，其中对透镜组和第一透镜组的移动模式进行调整更有助于确保期望的变焦比和光学性能，并确保变焦镜头的整个长度在携带时保持短 它周围。 变焦透镜包括正的第一透镜组G 1，负的第二透镜组G 2和正的第三透镜组G 3，并且包括位于第二透镜组G 3和第三透镜组G 3之间的孔径光阑S. 当从广角端到望远端变焦时，第一透镜组G1一致地移动，第二透镜组G 2一起移动。 第一G 1和第二透镜组G 2在望远端比在广角端处更靠近物体侧，其中第一G 1和第二透镜组G 2之间的间隔增加，并且间距减小 在第二G 2和第三透镜组G 3之间。 变焦透镜满足关于第一透镜组G 1的功率和移动量的条件（1）和（2）。

公开(公告)号：US07365910B2

公开(公告)日：2008-04-29

申请号：US10759166

申请日：2004-01-20

Applicant: Atsujiro Ishii ,  Toyoharu Hanzawa

Inventor： Atsujiro Ishii ,  Toyoharu Hanzawa

IPC: G02B15/14 ,  G02B17/00

CPC classification number: G02B13/0065 ,  G02B13/0045 ,  G02B13/006 ,  G02B13/007 ,  G02B13/0075 ,  G02B13/009 ,  G02B15/14 ,  G02B15/16 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/23238 ,  H04N5/23296

Abstract: The invention relates to an electronic image pickup system whose depth dimension is extremely reduced, taking advantage of an optical system type that can overcome conditions imposed on the movement of a zooming movable lens group while high specifications and performance are kept. The electronic image pickup system comprises an optical path-bending zoom optical system comprising, in order from its object side, a 1-1st lens group G1-1 comprising a negative lens group and a reflecting optical element P for bending an optical path, a 1-2nd lens group G1-2 comprising one positive lens and a second lens group G2 having positive refracting power. For zooming from the wide-angle end to the telephoto end, the second lens group G2 moves only toward the object side. The electronic image pickup system also comprises an electronic image pickup device I located on the image side of the zoom optical system.

Abstract translation: 本发明涉及一种电子摄像系统，其深度尺寸极大地降低，利用可以克服施加在变焦可移动透镜组的移动的条件的光学系统类型，同时保持高规格和性能。 电子摄像系统包括：光路弯曲变焦光学系统，其从物体侧起按包括负透镜组的第1-1透镜组G 1 -1和用于弯曲光路的反射光学元件P的顺序， 包括一个正透镜的第1-2透镜组G 1 -2和具有正折射光焦度的第二透镜组G 2。 为了从广角端到望远端的放大，第二透镜组G 2仅朝向物体侧移动。 电子摄像系统还包括位于变焦光学系统的像侧的电子摄像装置I。

公开(公告)号：US5815747A

公开(公告)日：1998-09-29

申请号：US715620

申请日：1996-09-18

Applicant: Akira Mori ,  Atsujiro Ishii ,  Masahiro Suzuki ,  Hironori Shibata

Inventor： Akira Mori ,  Atsujiro Ishii ,  Masahiro Suzuki ,  Hironori Shibata

IPC: G03B13/36 ,  G02B7/08 ,  G02B7/09 ,  G02B7/28 ,  G02B7/30 ,  G03B13/00

CPC classification number: G02B7/28

Abstract: A camera having an autofocus function, independent of a photographing optical system, includes a photographing optical system including synthetic resin lenses and an autofocus optical system, provided independent of the photographing optical system, having at least one synthetic resin lens and a stop decentered in a direction perpendicular to the optical axis of the synthetic resin lens. Thus, in the camera, the shift of the imaging position of the photographing optical system which is caused by an ambient temperature or humidity change is favorably corrected, and good photography can be performed.

Abstract translation: 具有独立于拍摄光学系统的自动对焦功能的相机包括拍摄光学系统，其包括合成树脂透镜和独立于摄影光学系统的自动聚焦光学系统，其具有至少一个合成树脂透镜和偏心于 方向垂直于合成树脂透镜的光轴。 因此，在相机中，有利地校正了由环境温度或湿度变化引起的拍摄光学系统的成像位置的偏移，并且可以执行良好的拍摄。

公开(公告)号：US4998807A

公开(公告)日：1991-03-12

申请号：US397247

申请日：1989-08-23

Applicant: Tsutomu Uzawa ,  Atsujiro Ishii ,  Norihiko Aoki

Inventor： Tsutomu Uzawa ,  Atsujiro Ishii ,  Norihiko Aoki

IPC: G02B9/00 ,  G02B15/16

CPC classification number: G02B15/173 ,  G02B15/161 ,  G02B3/0087

Abstract: A variable focal length lens system comprising a plurality of lens units, arranged with an imaging lens unit with a positive refractive power being located at the image side, and at least one lens unit being movable to change an airspace for varying focal length. The positive lens unit for image formation is made of at least one radial GRIN lens, arranged to distribute a stop at the object side of said lens unit. By utilizing a lesser numbers of lenses, it is possible for this vari-focal lens to have simpler processing, assembly, and adjustment of lenses and lens burrels with an efficient performance.

Abstract translation: 一种可变焦距透镜系统，包括多个透镜单元，其布置有具有正折射力的成像透镜单元位于图像侧，以及至少一个透镜单元可移动以改变空域以改变焦距。 用于图像形成的正透镜单元由至少一个径向GRIN透镜制成，布置成在所述透镜单元的物体侧分布停止点。 通过使用较少数量的透镜，该变焦镜头可以以更高的性能进行更简单的处理，组装和调整镜片和镜头孔。