公开(公告)号：US07397591B2

公开(公告)日：2008-07-08

申请号：US11873635

申请日：2007-10-17

申请人： Yoshinori Hayashi ,  Hiromichi Atsuumi

发明人： Yoshinori Hayashi ,  Hiromichi Atsuumi

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：US07126737B2

公开(公告)日：2006-10-24

申请号：US11345293

申请日：2006-02-02

申请人： Hiromichi Atsuumi ,  Yukio Itami

发明人： Hiromichi Atsuumi ,  Yukio Itami

IPC分类号： G02B26/08 ,  B41J27/00

CPC分类号： G02B26/123 ,  G02B26/125 ,  G02B27/0031

摘要： An optical scanning apparatus includes a light source that emits a light beam, optical systems through which the light beam travels including one that forms a line image, a polygon mirror that rotates and deflects the light beam with a deflective reflection surface, and a scanning optical system that converges the light beam to scan a target surface with a light beam spot. The optical system closer to the light source than the polygon mirror is configured so as to correct a change in an image-forming position of the light beam spot caused by deformation of the deflective reflection surface originating from the rotation of the polygon mirror.

摘要翻译： 光学扫描装置包括发射光束的光源，光束行进的光学系统，包括形成线条图像的光学系统，使偏转反射面旋转并偏转光束的多面镜，以及扫描光学 收敛光束以用光束点扫描目标表面的系统。 配置为比多面镜更靠近光源的光学系统被配置为校正由多角镜的旋转引起的偏转反射面的变形引起的光束光斑的成像位置的变化。

公开(公告)号：US07006120B2

公开(公告)日：2006-02-28

申请号：US10635520

申请日：2003-08-07

申请人： Kohji Sakai ,  Magane Aoki ,  Yoshinori Hayashi ,  Seizo Suzuki ,  Hiromichi Atsuumi

发明人： Kohji Sakai ,  Magane Aoki ,  Yoshinori Hayashi ,  Seizo Suzuki ,  Hiromichi Atsuumi

IPC分类号： B41J27/00

CPC分类号： B41J2/473

摘要： A multi-beam optical scanning apparatus includes a semiconductor laser array slanted relative to a sub-scanning direction and emitting a plurality of optical beams; a coupling lens converting a shape of each optical beam emitted from the semiconductor laser array; and an aperture with an opening having a size of Am×As, arranged after the coupling lens in a direction in which the optical beam progresses, where Am is a dimension of the opening in a main scanning direction and As is a dimension of the opening in the sub-scanning direction. When a length in the main scanning direction of a contour line defined by 1/e2 strength of a maximum strength of an optical beam at the position of the aperture is Lm, and a length in the sub-scanning direction of the contour line defined by 1/e2 strength of the maximum strength of the optical beam at the position of the aperture is Ls, the following conditional expressions are satisfied: Am

摘要翻译： 多光束光学扫描装置包括相对于副扫描方向倾斜并发射多个光束的半导体激光器阵列; 转换从半导体激光器阵列发射的每个光束的形状的耦合透镜; 以及具有尺寸为A mA x A s s的开口的孔，沿着光束进行的方向设置在耦合透镜之后，其中A m 是主扫描方向上的开口的尺寸，A S是子扫描方向上的开口的尺寸。 当在孔径的位置处的光束的最大强度的1 / e 2强度确定的轮廓线的主扫描方向上的长度为L / 并且在孔径的位置处的光束的最大强度的强度的1 / e 2强度限定的轮廓线的副扫描方向上的长度为L / SUB>，满足以下条件表达式

公开(公告)号：US06999208B2

公开(公告)日：2006-02-14

申请号：US09955181

申请日：2001-09-19

申请人： Seizo Suzuki ,  Hiromichi Atsuumi ,  Kohji Sakai ,  Magane Aoki ,  Hiroyuki Suhara

发明人： Seizo Suzuki ,  Hiromichi Atsuumi ,  Kohji Sakai ,  Magane Aoki ,  Hiroyuki Suhara

IPC分类号： H04N1/04

CPC分类号： G02B26/127

摘要： An optical scanner which performs optical scanning of a surface to be scanned by deflecting a luminous flux having a wavelength λ from a light source by means of an optical deflector, and condensing the deflected flux toward the surface to be scanned through a scanning image forming optical system, thereby forming an optical spot on the surface to be scanned. The scanning image forming optical system has at least one lens, and when the focal length fσ in the main scanning direction at a surface accuracy σi is defined as follows: fσ={2.6846 λ×√(k)×fm2/ω2}−fm where, fm represents the focal length in the main scanning direction of the scanning image forming optical system; k represents the number of lens surfaces; ω represents the aimed spot diameter of the optical spot in the main scanning direction at an image height of 0; σI represents the surface accuracy of the i-th lens surface as counted from the optical deflector side; n represents the refractive index of material of the lens having the i-th lens surface; and 1/l represents the spatial frequency in the main scanning direction on the lens surface; then, the surface accuracy σi, the focal length fσ, the refractive index n, and the spatial frequency 1/L satisfy, for each lens surface, the following condition: 0

摘要翻译： 一种光学扫描器，其通过借助于光学偏转器偏转来自光源的具有波长λ的光束来执行对要扫描的表面的光学扫描，并且通过扫描图像形成光学器件将被偏转的通量朝向被扫描的表面聚焦 从而在待扫描的表面上形成光斑。 扫描图像形成光学系统具有至少一个透镜，并且当以表面精度sigmai的主扫描方向的焦距f sigma定义如下时：fsigma = {2.6846lambdax√（k）xfm 2

公开(公告)号：US06937371B2

公开(公告)日：2005-08-30

申请号：US10866716

申请日：2004-06-15

申请人： Yoshinori Hayashi ,  Seizo Suzuki ,  Atsushi Kawamura ,  Hiromichi Atsuumi ,  Kohji Sakai ,  Akihisa Itabashi

发明人： Yoshinori Hayashi ,  Seizo Suzuki ,  Atsushi Kawamura ,  Hiromichi Atsuumi ,  Kohji Sakai ,  Akihisa Itabashi

IPC分类号： B41J2/44 ,  G02B7/02 ,  G02B13/00 ,  G02B13/18 ,  G02B26/10 ,  G02B26/12 ,  H04N1/113 ,  G02B26/08

CPC分类号： G02B7/028 ,  G02B26/124 ,  G02B26/125

摘要： An optical system includes three optical systems. The first has a coupling lens. The second includes a lens having a positive power in a vertical scanning direction and forms the light flux into a line image extending in the horizontal scanning direction on a deflector. The third includes a first lens having a positive power in the horizontal scanning direction, and a second lens having a positive power in the vertical scanning direction. Lateral magnification in the horizontal scanning direction is set larger than that in the vertical scanning direction. Temperature near the first lens is maintained higher than that near the second lens.

摘要翻译： 光学系统包括三个光学系统。 第一个具有耦合透镜。 第二实施例包括在垂直扫描方向上具有正功率的透镜，并且将光束形成为在偏转器上沿水平扫描方向延伸的线图像。 第三透镜在水平扫描方向具有正功率，在垂直扫描方向具有正功率的第二透镜。 水平扫描方向的横向放大倍率设定为大于垂直扫描方向。 第一透镜附近的温度保持高于第二透镜附近的温度。

公开(公告)号：US06800845B2

公开(公告)日：2004-10-05

申请号：US10460410

申请日：2003-06-13

申请人： Kohji Sakai ,  Seizo Suzuki ,  Hiromichi Atsuumi ,  Akihisa Itabashi

发明人： Kohji Sakai ,  Seizo Suzuki ,  Hiromichi Atsuumi ,  Akihisa Itabashi

IPC分类号： G02B2608

CPC分类号： G02B26/123

摘要： In a multi-beam scanning device and method of the present invention, a semiconductor laser array having a plurality of light emitting parts emitting multiple laser beams is provided. A rotary deflector deflects the laser beams emitted by the light emitting parts of the semiconductor laser array. The deflected laser beams from the rotary deflector is focused onto a scanned surface to form a plurality of beam spots that are separated on the scanned surface in a sub-scanning direction, the scanned surface being scanned simultaneously with the plurality of beam spots in a main scanning direction by a rotation of the rotary deflector. The laser array is configured such that the light emitting parts are arrayed along a line that is at an inclination angle &phgr; to the sub-scanning direction, the inclination angle &phgr; measured in degrees and meeting the conditions 0≦&phgr;

摘要翻译： 在本发明的多光束扫描装置和方法中，提供了具有发射多个激光束的多个发光部的半导体激光器阵列。 旋转偏转器使由半导体激光器阵列的发光部分发射的激光束偏转。 来自旋转偏转器的偏转的激光束被聚焦到扫描的表面上，以形成在扫描的表面上沿副扫描方向分离的多个光束点，扫描的表面与主扫描的多个光束点同时被扫描 通过旋转偏转器的旋转而进行扫描方向。 激光器阵列被构造成使得发光部分沿着与副扫描方向成倾斜角度的线排列，倾斜角度phi以度数测量并满足条件0 <= phi <90，并且该 扫描线间距P，激光阵列的发光部分的阵列pitchrho和由K =0.82λ/ωgaz定义的参数K，其中λ是发射的激光束和ωgaz的波长是目标光束点 副扫描方向的直径满足下列条件：

公开(公告)号：US06417509B1

公开(公告)日：2002-07-09

申请号：US09533063

申请日：2000-03-22

申请人： Hiromichi Atsuumi ,  Seizo Suzuki

发明人： Hiromichi Atsuumi ,  Seizo Suzuki

IPC分类号： H01J314

CPC分类号： G02B26/128

摘要： An optical scanning apparatus includes a light source for radiating a light beam, an optical scanning system for deflecting the light beam from the light source and condensing the light beam on a surface to be scanned, a detecting device for detecting an image forming state of the light beam scanned by the optical scanning system, and an adjusting mechanism for adjusting the focal position of the light beam on the surface to be scanned. The detecting device includes a very low cost detecting element that can accurately detect an image forming state of the light beam scanned by the optical scanning system independently in a main scanning direction and in a sub scanning direction. While the focal position of the light beam is changed continuously or at a predetermined pitch by the adjusting mechanism, the detecting device monitors the image forming state of the light beam and detects the location and vicinity of a light beam waist position relative to a desired position on the surface to be scanned.

摘要翻译： 光学扫描装置包括用于照射光束的光源，用于使来自光源的光束偏转并将光束聚集在待扫描的表面上的光学扫描系统，用于检测被扫描的图像形成状态的检测装置 由光学扫描系统扫描的光束，以及用于调整要扫描的表面上的光束的焦点位置的调节机构。 检测装置包括非常低成本的检测元件，其可以在主扫描方向和副扫描方向上独立地精确地检测由光学扫描系统扫描的光束的图像形成状态。 当通过调节机构连续地或以预定的间距改变光束的焦点位置时，检测装置监视光束的图像形成状态，并且相对于期望位置检测光束腰部位置的位置和附近 在要扫描的表面上。

公开(公告)号：US5426298A

公开(公告)日：1995-06-20

申请号：US181588

申请日：1994-01-14

申请人： Nobuo Sakuma ,  Hiromichi Atsuumi ,  Osamu Endou ,  Akihisa Itabashi

发明人： Nobuo Sakuma ,  Hiromichi Atsuumi ,  Osamu Endou ,  Akihisa Itabashi

IPC分类号： G02B26/10

CPC分类号： G02B26/105

摘要： In an optical scanner, an optical deflector has a deflecting reflecting face rotated at an equal speed. A light beam from a light source is deflected on a plane by the deflector at an equal angular velocity and is incident to a reflective image-forming element through a half mirror inclined with respect to a beam deflecting face. The light beam reflected on the reflective image-forming element is reflected on the half mirror and is converged by an image-forming action of the reflective image-forming element as a light spot on a scanned face to perform an optical scanning operation. The reflective image-forming element has a function for substantially performing the optical scanning operation using the light spot at an equal speed. The reflective image-forming element is arranged such that the reflective image-forming element is shifted by a predetermined shifting amount in a direction perpendicular to the beam deflecting face to correct the curve of a scanning line on the scanned face. Other optical scanners are also shown.

摘要翻译： 在光学扫描器中，光学偏转器具有以相等的速度旋转的偏转反射面。 来自光源的光束由偏转器以相等的角速度在平面上偏转，并且通过相对于光束偏转面倾斜的半透镜入射到反射成像元件。 在反射成像元件上反射的光束在半反射镜上被反射，并且通过反射图像形成元件的图像形成动作会聚在扫描面上作为光点，以执行光学扫描操作。 反射图像形成元件具有以相同的速度基本上执行使用光斑的光学扫描操作的功能。 反射图像形成元件被布置成使得反射图像形成元件在垂直于光束偏转面的方向上偏移预定的移动量，以校正扫描面上的扫描线的曲线。 还显示其他光学扫描仪。

公开(公告)号：US5355244A

公开(公告)日：1994-10-11

申请号：US945269

申请日：1992-09-15

申请人： Seizoh Suzuki ,  Kenichi Takanashi ,  Hiromichi Atsuumi

发明人： Seizoh Suzuki ,  Kenichi Takanashi ,  Hiromichi Atsuumi

IPC分类号： G02B26/12 ,  G02B26/08

CPC分类号： G02B26/12

摘要： In an optical scanner for reducing shading, a semiconductor laser or a semiconductor laser array is set to a light source and a laser beam from the light source is deflected by a light deflector having a deflecting reflecting face and is converged by a lens for scanning as a light spot on a scanned face to perform an optical scanning operation. The optical scanner comprises one or more bending mirrors for bending an optical path of the laser beam and arranged between the light deflector and the scanned face; and an increased reflecting coating film disposed on a mirror face of the one or more mirrors such that reflectivity is gradually increased from a central portion of the increased reflecting coating film in a main scan-corresponding direction toward both end portions of the film.

摘要翻译： 在用于减少阴影的光学扫描器中，将半导体激光器或半导体激光器阵列设置为光源，并且来自光源的激光束被具有偏转反射面的光偏转器偏转并且被用于扫描的透镜会聚 扫描面上的光斑进行光扫描。 光学扫描器包括一个或多个弯曲反射镜，用于弯曲激光束的光路并且布置在光偏转器和扫描面之间; 以及设置在所述一个或多个反射镜的镜面上的增加的反射涂膜，使得反射率从所述增加的反射涂膜的主扫描对应方向的中心部分朝向所述膜的两端部逐渐增加。

公开(公告)号：US08638503B2

公开(公告)日：2014-01-28

申请号：US13564287

申请日：2012-08-01

申请人： Yohei Takano ,  Hiromichi Atsuumi

发明人： Yohei Takano ,  Hiromichi Atsuumi

IPC分类号： G02B15/14

CPC分类号： G02B15/17

摘要： A zoom lens includes first to fifth lens groups having positive, negative, negative, positive, and positive refractive power, respectively. The third lens group includes a single negative meniscus lens with a concave surface on an object side, to move along the optical axis for focusing. When zooming 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 increases, an interval between the third and fourth lens groups decreases, and an interval between the fourth and fifth lens groups decreases. The fourth and fifth lens groups are set to have a combined lateral magnification β45T to satisfy the following condition, when an object distance is infinite at a telephoto end: −0.041

摘要翻译： 变焦镜头包括分别具有正，负，正和正屈光力的第一至第五透镜组。 第三透镜组包括在物体侧具有凹面的单个负弯月形透镜，以沿着用于聚焦的光轴移动。 当从广角端到长焦端放大时，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增加，第三和第四透镜组之间的间隔减小， 第四和第五透镜组减少。 第四和第五透镜组被设置为具有组合的横向放大倍数β45T以满足以下条件：当远摄端处的物体距离是无穷大时：-0.041 <β45T/ Ft <-0.025其中Ft是整个焦距 变焦镜头在望远端。