公开(公告)号：US20090231725A1

公开(公告)日：2009-09-17

申请号：US12379826

申请日：2009-03-03

申请人： Shigehiko Matsunaga ,  Koji Toyoda

发明人： Shigehiko Matsunaga ,  Koji Toyoda

IPC分类号： G02B15/16

CPC分类号： G02B15/173 ,  G02B5/04

摘要： A zoom lens includes first to fifth lens groups respectively having positive, negative, positive, positive, and negative refractive powers in that order from the object side. Zooming is performed by moving the second lens group and the fourth lens group in an optical-axis direction. The first lens group includes a front lens group having a negative refractive power, an optical member for bending an optical path, and a rear lens group having a positive refractive power in that order from the object side. The front lens group is a cemented lens in which a first lens having a negative refractive power is bonded to a second lens having a positive refractive power in that order from the object side to the image side.

摘要翻译： 变焦透镜包括分别具有从物体侧开始的正，负，正，正和负折射光焦度的第一至第五透镜组。 通过沿着光轴方向移动第二透镜组和第四透镜组来进行变焦。 第一透镜组包括具有负屈光力的前透镜组，用于弯曲光路的光学构件和从物体侧起依次具有正折光力的后透镜组。 前透镜组是其中具有负屈光力的第一透镜从物体侧到像侧依次结合到具有正屈光力的第二透镜的胶合透镜。

公开(公告)号：US20090168179A1

公开(公告)日：2009-07-02

申请号：US12292911

申请日：2008-12-01

申请人： Koji Toyoda

发明人： Koji Toyoda

IPC分类号： G02B27/64 ,  G02B15/20

CPC分类号： G02B15/173

摘要： A zoom lens and an image pickup apparatus are disclosed. The zoom lens includes, in order from an object side to an image side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a positive refractive power. The fifth lens group includes a fixed group having a negative refractive power, and a movable group having a positive refractive power and being movable in a direction substantially orthogonal to the optical axis. The image formed on an image surface is movable in a direction substantially orthogonal to the optical axis by moving the movable group of the fifth lens group in the direction substantially orthogonal to the optical axis. The fifth lens group is satisfied predetermined conditions.

摘要翻译： 公开了一种变焦透镜和图像拾取装置。 变焦透镜从物体侧到像侧依次包括具有正屈光力的第一透镜组，具有负折光力的第二透镜组，具有正折光力的第三透镜组，第四透镜组 具有正屈光力，以及具有正屈光力的第五透镜组。 第五透镜组包括具有负屈光力的固定组和具有正折光力的可移动组，并且可在基本上垂直于光轴的方向上移动。 通过沿与光轴大致正交的方向移动第五透镜组的可移动组，在图像表面上形成的图像可以在基本上与光轴正交的方向上移动。 第五透镜组满足预定条件。

公开(公告)号：US20080151384A1

公开(公告)日：2008-06-26

申请号：US12000605

申请日：2007-12-14

申请人： Mitsuhiro Suzaki ,  Yusuke Nanjo ,  Shinichi Arita ,  Koji Toyoda

发明人： Mitsuhiro Suzaki ,  Yusuke Nanjo ,  Shinichi Arita ,  Koji Toyoda

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G02B13/18

摘要： A zoom lens includes, in order from an object side, a first lens group having a positive refractive power and fixed in an optical axis direction, a second lens group having a negative refractive power and moving along an optical axis to zoom, a third lens group having a positive refractive power and fixed in the optical axis direction, and a fourth lens group having a positive refractive power and moving in a non straight line along the optical axis to compensate variations of an image formation position and compensate change of the image formation position caused by changes of an object distance.

摘要翻译： 变焦透镜从物体依次包括具有正折光力并沿光轴方向固定的第一透镜组，具有负折光力并沿着光轴移动的第二透镜组进行变焦，第三透镜 具有正折射光焦度并在光轴方向上固定的第一透镜组，以及具有正折光力并沿着光轴在非直线上移动的第四透镜组，以补偿图像形成位置的变化并补偿图像形成的变化 由物体距离变化引起的位置。

公开(公告)号：US08520317B2

公开(公告)日：2013-08-27

申请号：US13423837

申请日：2012-03-19

申请人： Koji Toyoda

发明人： Koji Toyoda

IPC分类号： G02B15/14 ,  H04N5/225 ,  G02B27/64

CPC分类号： G02B15/173

摘要： A zoom lens and an image pickup apparatus are disclosed. The zoom lens includes, in order from an object side to an image side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a positive refractive power. The fifth lens group includes a fixed group having a negative refractive power, and a movable group having a positive refractive power and being movable in a direction substantially orthogonal to the optical axis. The image formed on an image surface is movable in a direction substantially orthogonal to the optical axis by moving the movable group of the fifth lens group in the direction substantially orthogonal to the optical axis. The fifth lens group is satisfied predetermined conditions.

公开(公告)号：US20110157429A1

公开(公告)日：2011-06-30

申请号：US12926425

申请日：2010-11-17

申请人： Shigehiko Matsunaga ,  Koji Toyoda

发明人： Shigehiko Matsunaga ,  Koji Toyoda

IPC分类号： H04N5/262 ,  G02B15/14

CPC分类号： G02B15/173

摘要： Disclosed herein is a zoom lens including a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group. The zoom lens satisfies following conditional expressions (1) and (2), 0.03

摘要翻译： 这里公开了包括第一透镜组，第二透镜组，第三透镜​​组，第四透镜组和第五透镜组的变焦透镜。 变焦透镜满足以下条件式（1）和（2），0.03

公开(公告)号：US20100202053A1

公开(公告)日：2010-08-12

申请号：US12654804

申请日：2010-01-05

申请人： Koji Toyoda

发明人： Koji Toyoda

IPC分类号： G02B27/64 ,  G02B15/16

CPC分类号： G02B27/646 ,  G02B15/173 ,  H04N5/23248

摘要： A zoom lens includes, in order from an object side to an image side, a positive refractive, fixed first lens unit; a negative refractive second lens unit movable mainly for zooming; a positive refractive, fixed third lens unit; a positive refractive fourth lens unit movable for focal-position correction and focusing performed in response to zooming; and a positive refractive fifth lens unit. The fifth lens unit includes, in order from the object side to the image side, a negative refractive, fixed sub-unit; and a positive refractive sub-unit movable substantially perpendicularly to an optical axis. An image formed on an image surface is movable substantially perpendicularly to the optical axis by moving the movable sub-unit substantially perpendicularly to the optical axis. An aperture stop is provided on the object side of the third lens unit. The third lens unit includes a positive refractive sub-unit and a negative refractive sub-unit.

摘要翻译： 变焦透镜从物体侧到像侧依次包括正折射固定的第一透镜单元; 负折射第二透镜单元，主要用于变焦; 正折射固定的第三透镜单元; 正折射第四透镜单元，其可移动用于响应于变焦而进行焦点位置校正和聚焦; 和正折射第五透镜单元。 第五透镜单元从物体侧到像侧依次包括负折射固定子单元; 以及基本上垂直于光轴移动的正折射子单元。 通过基本上垂直于光轴移动可移动子单元，形成在图像表面上的图像可基本上垂直于光轴移动。 在第三透镜单元的物体侧设置孔径光阑。 第三透镜单元包括正折射子单元和负折射子单元。

公开(公告)号：US20070216755A1

公开(公告)日：2007-09-20

申请号：US11798347

申请日：2007-05-14

申请人： Koji Toyoda

发明人： Koji Toyoda

IPC分类号： B41J2/455

CPC分类号： B41J2/473

摘要： The present invention provides a color image forming apparatus forming an image by using a plurality of image carriers, wherein at least one lens having identical optical characteristics and forming individual scanning optical systems which scan the individual image carriers with beams is formed by use of a plurality of cavities. When dividing the cavities into a plurality of groups in response to variations in the optical characteristics caused by cavity difference of the lenses formed with the plurality of cavities so that the relative differences in an optical parameters are within an allowable range, at least one lens of each scanning optical system is selected from the cavities of one of the plurality of groups.

摘要翻译： 本发明提供一种通过使用多个图像载体形成图像的彩色图像形成装置，其中至少一个具有相同光学特性的透镜和形成用波束扫描各个图像载体的各个扫描光学系统通过使用多个 的腔。 当响应于由多个空腔形成的透镜的空腔差导致的光学特性的变化而将空腔分成多个组，使得光学参数的相对差异在允许范围内时，至少一个透镜 每个扫描光学系统选自多个组中的一组的空腔。

公开(公告)号：US06856336B2

公开(公告)日：2005-02-15

申请号：US10291380

申请日：2002-11-12

申请人： Koji Toyoda

发明人： Koji Toyoda

IPC分类号： B41J2/44 ,  G02B13/00 ,  G02B26/10 ,  H04N1/036 ,  H04N1/113 ,  H04N1/50 ,  G03G15/01

CPC分类号： H04N1/506 ,  G03G2215/0119 ,  G03G2215/0161

摘要： Disclosed is a scanning optical apparatus which can reduce color misregistration in a sub scanning direction to thereby obtain a good color image output, and a color image forming apparatus using the same. In the scanning optical apparatus, a beam emitted from light source means 1 is deflected by deflecting means 5, and the beam deflected by the deflecting means is imaged in a spot shape on a surface 7 to be scanned by scanning optical device, and light-scans on the surface to be scanned, and a scanning line scanning on the surface to be scanned has two or more extremums within the effective range of a scanning area.

摘要翻译： 公开了一种扫描光学装置，其可以减少副扫描方向上的颜色对准，从而获得良好的彩色图像输出，以及使用该扫描光学装置的彩色图​​像形成装置。 在扫描光学装置中，从光源装置1发射的光束被偏转装置5偏转，并且由偏转装置偏转的光束被成像为通过扫描光学装置扫描的表面7上的光斑形状， 在要扫描的表面上进行扫描，并且要扫描的表面上的扫描线在扫描区域的有效范围内具有两个或更多个极值。

公开(公告)号：US08040614B2

公开(公告)日：2011-10-18

申请号：US12926425

申请日：2010-11-17

申请人： Shigehiko Matsunaga ,  Koji Toyoda

发明人： Shigehiko Matsunaga ,  Koji Toyoda

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： Disclosed herein is a zoom lens including a first lens group, a second lens group, a third lens group, a fourth lens group, and a fifth lens group. The zoom lens satisfies following conditional expressions (1) and (2), 0.03

公开(公告)号：US07986458B2

公开(公告)日：2011-07-26

申请号：US12292911

申请日：2008-12-01

申请人： Koji Toyoda

发明人： Koji Toyoda

IPC分类号： G02B27/64 ,  G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens and an image pickup apparatus are disclosed. The zoom lens includes, in order from an object side to an image side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a positive refractive power. The fifth lens group includes a fixed group having a negative refractive power, and a movable group having a positive refractive power and being movable in a direction substantially orthogonal to the optical axis. The image formed on an image surface is movable in a direction substantially orthogonal to the optical axis by moving the movable group of the fifth lens group in the direction substantially orthogonal to the optical axis. The fifth lens group is satisfied predetermined conditions.

摘要翻译： 公开了一种变焦透镜和图像拾取装置。 变焦透镜从物体侧到像侧依次包括具有正屈光力的第一透镜组，具有负折光力的第二透镜组，具有正折光力的第三透镜组，第四透镜组 具有正屈光力，以及具有正屈光力的第五透镜组。 第五透镜组包括具有负屈光力的固定组和具有正折光力的可移动组，并且可在基本上垂直于光轴的方向上移动。 通过沿与光轴大致正交的方向移动第五透镜组的可移动组，在图像表面上形成的图像可以在基本上与光轴正交的方向上移动。 第五透镜组满足预定条件。