公开(公告)号：US08270053B2

公开(公告)日：2012-09-18

申请号：US12230015

申请日：2008-08-21

申请人： Taku Amada ,  Hiromichi Atsuumi

发明人： Taku Amada ,  Hiromichi Atsuumi

IPC分类号： G02B7/02

CPC分类号： G02B26/125 ,  B41J2/471

摘要： A holding mechanism for a long length optical element, which extends in a main scanning direction that is a movement direction of a deflected luminous flux by an optical deflector, and leads the deflected luminous flux to a scanned surface, includes; a holding member which is placed in a sub-scanning direction orthogonal to the main scanning direction and holds the long length optical element in at least two places. The holding member has, an adjusting section which deflects the long length optical element in the sub-scanning direction and controls a tilt of the long length optical element in a sub-scanning cross-section and/or occurrences of a tilt distribution in a longitudinal direction in the sub-scanning cross-section.

摘要翻译： 包括：长光学元件的保持机构，其沿着作为光偏转器的偏转光束的移动方向的主扫描方向延伸并将被偏转的光束引导到扫描面， 保持构件，其放置在与主扫描方向正交的副扫描方向上，并且将长度光学元件保持在至少两个位置。 保持构件具有调整部，该调整部使副扫描方向上的长度光学元件偏转，并且在副扫描截面中控制长度光学元件的倾斜和/或纵向的倾斜分布的发生 方向在副扫描横截面。

公开(公告)号：US08264781B2

公开(公告)日：2012-09-11

申请号：US13242666

申请日：2011-09-23

申请人： Yohei Takano ,  Hiromichi Atsuumi

发明人： Yohei Takano ,  Hiromichi Atsuumi

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens includes a first lens group having a positive refracting power, a second lens group having a negative refracting power, a third lens group having a positive refracting power, and a fourth lens group having a positive refracting power, being disposed in order from an object side, and an aperture stop disposed at an object side of the third lens group. When changing the magnification from a wide angle end to a telephoto end, an interval between the first and second lens groups increases, an interval between the second and third lens groups decreases, and an interval between the third and fourth lens groups changes.

摘要翻译： 变焦透镜包括具有正折射率的第一透镜组，具有负折射率的第二透镜组，具有正折射率的第三透镜组和具有正折射光焦度的第四透镜组，按照从 物体侧和设置在第三透镜组的物体侧的孔径光阑。 当从广角端到望远端改变放大倍率时，第一和第二透镜组之间的间隔增加，第二和第三透镜组之间的间隔减小，并且第三和第四透镜组之间的间隔发生变化。

公开(公告)号：US08054559B2

公开(公告)日：2011-11-08

申请号：US12726866

申请日：2010-03-18

申请人： Yohei Takano ,  Hiromichi Atsuumi

发明人： Yohei Takano ,  Hiromichi Atsuumi

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens includes a first lens group having a positive refracting power, a second lens group having a negative refracting power, a third lens group having a positive refracting power, and a fourth lens group having a positive refracting power, being disposed in order from an object side, and an aperture stop disposed at an object side of the third lens group. When changing the magnification from a wide angle end to a telephoto end, an interval between the first and second lens groups increases, an interval between the second and third lens groups decreases, and an interval between the third and fourth lens groups changes.

摘要翻译： 变焦透镜包括具有正折射率的第一透镜组，具有负折射率的第二透镜组，具有正折射率的第三透镜组和具有正折射光焦度的第四透镜组，按照从 物体侧和设置在第三透镜组的物体侧的孔径光阑。 当从广角端到望远端改变放大倍率时，第一和第二透镜组之间的间隔增加，第二和第三透镜组之间的间隔减小，并且第三和第四透镜组之间的间隔发生变化。

公开(公告)号：US07719773B2

公开(公告)日：2010-05-18

申请号：US12268010

申请日：2008-11-10

申请人： Hiromichi Atsuumi ,  Yoshifumi Sudoh

发明人： Hiromichi Atsuumi ,  Yoshifumi Sudoh

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens unit includes, in order from an object side to an image side: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group having a negative refracting power; a fifth lens group having a positive refracting power; and a sixth lens group having a negative refracting power, an aperture stop is disposed between the second lens group and the third lens group, and when changing magnification from a wide-angle end to a telephoto end, at least the second lens group, the third lens group and the fifth lens group are moved, and the first lens group includes a reflecting optical element which bends a light path in the first lens group to obtain a predetermined light path length.

摘要翻译： 变焦透镜单元从物体侧到像侧依次包括具有正折射率的第一透镜组; 具有负折射率的第二透镜组; 具有正折射率的第三透镜组; 具有负折射力的第四透镜组; 具有正折射率的第五透镜组; 以及具有负折射力的第六透镜组，在第二透镜组和第三透镜组之间设置孔径光阑，并且当从广角端到望远端改变倍率时，至少第二透镜组， 第三透镜组和第五透镜组移动，并且第一透镜组包括在第一透镜组中弯曲光路以获得预定光路长度的反射光学元件。

公开(公告)号：US20090135500A1

公开(公告)日：2009-05-28

申请号：US12270296

申请日：2008-11-13

申请人： Yoshifumi Sudoh ,  Hiromichi Atsuumi

发明人： Yoshifumi Sudoh ,  Hiromichi Atsuumi

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens includes a first lens group having a positive focal length, a second lens group having a negative focal length, a third lens group having a positive focal length, a fourth lens group having a negative focal length which are arranged in order from an object side to an image side, and a diaphragm disposed between the second and third lens groups. During a change of zoom ratio from short to long focus end, the first to fourth lens groups move so that an interval between the first and second lens groups increases, an interval between the second and third lens groups decreases, and an interval between the third and fourth lens groups increases. The first lens group includes first and second negative lenses, a reflective optical element, and at least one positive lens arranged in order from the object side to the image side.

摘要翻译： 变焦透镜包括具有正焦距的第一透镜组，具有负焦距的第二透镜组，具有正焦距的第三透镜组，具有负焦距的第四透镜组，其按照从 物体侧到像侧，以及设置在第二透镜组和第三透镜组之间的光阑。 在从短对焦端到缩短倍率的变化期间，第一至第四透镜组移动，使得第一和第二透镜组之间的间隔增加，第二和第三透镜组之间的间隔减小，并且第三透镜组之间的间隔 第四透镜组增加。 第一透镜组包括第一和第二负透镜，反射光学元件和从物体侧到像侧依次布置的至少一个正透镜。

公开(公告)号：US20090122418A1

公开(公告)日：2009-05-14

申请号：US12268010

申请日：2008-11-10

申请人： Hiromichi Atsuumi ,  Yoshifumi Sudoh

发明人： Hiromichi Atsuumi ,  Yoshifumi Sudoh

IPC分类号： G02B15/20 ,  G02B15/16

CPC分类号： G02B15/173

摘要： A zoom lens unit includes, in order from an object side to an image side: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive refracting power; a fourth lens group having a negative refracting power; a fifth lens group having a positive refracting power; and a sixth lens group having a negative refracting power, an aperture stop is disposed between the second lens group and the third lens group, and when changing magnification from a wide-angle end to a telephoto end, at least the second lens group, the third lens group and the fifth lens group are moved, and the first lens group includes a reflecting optical element which bends a light path in the first lens group to obtain a predetermined light path length.

摘要翻译： 变焦透镜单元从物体侧到像侧依次包括具有正折射率的第一透镜组; 具有负折射率的第二透镜组; 具有正折射率的第三透镜组; 具有负折射力的第四透镜组; 具有正折射率的第五透镜组; 以及具有负折射力的第六透镜组，在第二透镜组和第三透镜组之间设置孔径光阑，并且当从广角端到望远端改变倍率时，至少第二透镜组， 第三透镜组和第五透镜组移动，并且第一透镜组包括在第一透镜组中弯曲光路以获得预定光路长度的反射光学元件。

公开(公告)号：US07164516B2

公开(公告)日：2007-01-16

申请号：US11500355

申请日：2006-08-08

申请人： Yoshinori Hayashi ,  Hiromichi Atsuumi ,  Yasutaka Izumi

发明人： Yoshinori Hayashi ,  Hiromichi Atsuumi ,  Yasutaka Izumi

IPC分类号： G02B26/08

CPC分类号： G02B26/125

摘要： An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side of the scanning lens closest to a deflection reflecting surface has a negative power in a vertical scanning direction, and is a special toric surface in which a radius of curvature in a vertical scanning changes from an optical axis of the lens surface toward a periphery of the horizontal scanning direction. An F number of the beams toward the surface to be scanned of the scanning lens in the vertical scanning direction is larger in a peripheral part than in a central part in an effective scanning width.

摘要翻译： 光学扫描器包括光源，光耦合器，光线图像单元，偏转器和光学扫描单元。 光学扫描单元包括将光束引导到待扫描表面的扫描透镜。 最靠近偏转反射面的扫描透镜的偏转器侧的表面在垂直扫描方向上具有负的功率，并且是垂直扫描中的曲率半径从透镜的光轴变化的特殊复曲面 表面朝向水平扫描方向的周边。 在扫描透镜的垂直扫描方向上要扫描的表面的光束数目F在周边部分比在有效扫描宽度中的中心部分大。

公开(公告)号：US07106483B2

公开(公告)日：2006-09-12

申请号：US10866043

申请日：2004-06-14

申请人： Yoshinori Hayashi ,  Hiromichi Atsuumi ,  Yasutaka Izumi

发明人： Yoshinori Hayashi ,  Hiromichi Atsuumi ,  Yasutaka Izumi

IPC分类号： G02B26/08

CPC分类号： G02B26/125

摘要： An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side of the scanning lens closest to a deflection reflecting surface has a negative power in a vertical scanning direction, and is a special toric surface in which a radius of curvature in a vertical scanning changes from an optical axis of the lens surface toward a periphery of the horizontal scanning direction. An F number of the beams toward the surface to be scanned of the scanning lens in the vertical scanning direction is larger in a peripheral part than in a central part in an effective scanning width.

摘要翻译： 光学扫描器包括光源，光耦合器，光线图像单元，偏转器和光学扫描单元。 光学扫描单元包括将光束引导到待扫描表面的扫描透镜。 最靠近偏转反射面的扫描透镜的偏转器侧的表面在垂直扫描方向上具有负的功率，并且是垂直扫描中的曲率半径从透镜的光轴变化的特殊复曲面 表面朝向水平扫描方向的周边。 在扫描透镜的垂直扫描方向上要扫描的表面的光束数目F在周边部分比在有效扫描宽度中的中心部分大。

公开(公告)号：US06961164B2

公开(公告)日：2005-11-01

申请号：US10047092

申请日：2002-01-17

申请人： Hiromichi Atsuumi

发明人： Hiromichi Atsuumi

IPC分类号： B41J2/44 ,  B41J2/47 ,  G02B13/00 ,  G02B13/06 ,  G02B13/18 ,  G02B26/10 ,  G02B26/12 ,  H04N1/036 ,  H04N1/113 ,  G02B26/08

CPC分类号： B41J2/471 ,  G02B26/124 ,  G02B26/125

摘要： Scanning optics of the present invention effectively reduces the variation of the curvature of field in the main and subscanning directions ascribable to varying environment, which includes temperature and humidity. This, coupled with the fact that the scanning optics desirably corrects wavefront aberration, reduces the variation of a beam spot diameter and implements a desirable beam spot with a small diameter. A scanning device with such optics can effect desirable optical scanning with a stable, small-diameter beam spot and allows an image forming apparatus to form attractive images.

摘要翻译： 本发明的扫描光学器件有效地减少了归因于包括温度和湿度的变化环境的主和副扫描方向的曲率的变化。 这与扫描光学器件期望校正波前像差的事实相结合，减小了光束光斑直径的变化并且实现了具有小直径的期望的光束点。 具有这种光学元件的扫描装置可以用稳定的小直径光束点实现期望的光学扫描，并允许图像形成装置形成有吸引力的图像。

公开(公告)号：US5475522A

公开(公告)日：1995-12-12

申请号：US418157

申请日：1995-04-06

申请人： Akihisa Itabashi ,  Hiromichi Atsuumi

发明人： Akihisa Itabashi ,  Hiromichi Atsuumi

IPC分类号： G02B13/00 ,  G02B26/10 ,  G02B26/12 ,  G02B26/08

CPC分类号： G02B26/126

摘要： An optical scanner has a light source device for emitting a light beam for performing an optical scanning operation; a cylindrical lens system for converging the light beam from the light source device only in a cross scan-corresponding direction and focusing and forming the light beam as a linear image extending in a main scan-corresponding direction; an optical deflector for reflecting the light beam from this cylindrical lens system on a deflecting reflecting face and deflecting this light beam at an equal angular velocity; an image forming mirror system for converging the deflected light beam as a light spot on a scanned face and performing the optical scanning operation at an equal speed by using the light spot; and an adjusting mechanism for displacing and adjusting a position of the cylindrical lens system in an optical axis direction thereof.

摘要翻译： 光学扫描器具有用于发射用于执行光学扫描操作的光束的光源装置; 圆柱透镜系统，用于仅以十字扫描对应的方向会聚来自光源装置的光束，并且聚焦并形成作为沿主扫描对应方向延伸的线性图像的光束; 用于将来自该柱面透镜系统的光束反射在偏转反射面上并以相等的角速度偏转该光束的光学偏转器; 图像形成镜系统，用于将偏转光束作为光点聚焦在扫描面上，并通过使用光斑以相等的速度进行光学扫描操作; 以及用于使柱面透镜系统沿其光轴方向移位和调整位置的调节机构。