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：US06771407B2

公开(公告)日：2004-08-03

申请号：US10247702

申请日：2002-09-20

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： G02B2608

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：US06596985B2

公开(公告)日：2003-07-22

申请号：US09788415

申请日：2001-02-21

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，激光器阵列的发光部分的阵列间距rho和由等式定义的参数K，其中，lamb是发射的激光束的波长，ωgaz是副扫描方向上的目标光点直径 ，满足以下条件：

公开(公告)号：US07215354B1

公开(公告)日：2007-05-08

申请号：US09678611

申请日：2000-10-04

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

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

IPC分类号： B41J27/00

CPC分类号： G02B26/125 ,  G02B13/0005

摘要： A scanning optical system condensing a beam deflected by an optical deflector so as to form a beam spot on a surface to be scanned, comprises two lenses. A lens on the side of optical deflector has a negative refracting power in sub-scanning direction. A lens on the side of surface to be scanned has a positive refracting power in the sub-scanning direction. At least one lens surface of the lens surfaces of the two lenses is such that a shape in a sub-scanning section thereof is a non-arc shape.

摘要翻译： 一种扫描光学系统，其将由光学偏转器偏转的光束聚光以在待扫描的表面上形成束斑，包括两个透镜。 光偏转器一侧的透镜在副扫描方向上具有负的折射光焦度。 待扫描表面一侧的透镜在副扫描方向上具有正折射力。 两个透镜的透镜表面的至少一个透镜表面使得其副扫描部分中的形状为非弧形。

公开(公告)号：US06509995B1

公开(公告)日：2003-01-21

申请号：US09653330

申请日：2000-08-31

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

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

IPC分类号： G02B2608

CPC分类号： G02B26/128

摘要： A light source emitting a light flux; a coupling optical system couples the light flux from the light source to a subsequent optical system by transforming it into a parallel light flux, an approximately convergent light flux or an approximately divergent light flux; a light deflector reflects the light flux from the coupling optical system with a deflection reflective surface, and deflects it; a scanning and imaging optical system condenses the deflected light flux from the light deflector onto a surface to be scanned as a beam spot; and a correcting optical system is provided for self correcting shift of focal position of the beam spot on the surface to be scanned occurring due to environmental change or the like. The correcting optical system comprises at least one pair of a resin-made lens having an anamorphic surface having a negative power in each of main scanning direction and sub-scanning direction and a glass-made lens having an anamorphic surface having a positive power at least in sub-scanning direction, and is disposed between the coupling optical system and deflection reflective surface.

摘要翻译： 发射光束的光源; 耦合光学系统将来自光源的光束通过将其变换成平行光束，近似收敛的光束或大致发散的光束而将光束耦合到后续的光学系统; 光偏转器用耦合光学系统反射具有偏转反射表面的光束，并使其偏转; 扫描和成像光学系统将来自光偏转器的偏转光束会聚到待扫描的表面上作为光斑; 并且提供了一种校正光学系统，用于自动校正由于环境变化等而发生的待扫描表面上的束斑的焦点位置偏移。 校正光学系统包括至少一对树脂制透镜，其具有在主扫描方向和副扫描方向各自具有负功率的变形表面，并且玻璃制镜片具有至少具有正功率的变形表面 并且设置在耦合光学系统和偏转反射表面之间。

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：US07068407B2

公开(公告)日：2006-06-27

申请号：US11273297

申请日：2005-11-15

申请人： Kohji Sakai ,  Seizo Suzuki ,  Hiromichi Atsuumi

发明人： Kohji Sakai ,  Seizo Suzuki ,  Hiromichi Atsuumi

IPC分类号： G02B26/08

CPC分类号： G02B26/0841 ,  B41J2/473

摘要： An optical element can effectively correct misalignment of focused positions of optical spots and an optical spot pitch deviation with respect to image heights due to a refractive index distribution therein. The optical element includes a lens, which serves as an optical system in an optical scanner, is shaped in such a profile that misalignment of a focused position of the optical spot due to the refractive index distribution is corrected for image heights.

公开(公告)号：US20060077501A1

公开(公告)日：2006-04-13

申请号：US11273297

申请日：2005-11-15

申请人： Kohji Sakai ,  Seizo Suzuki ,  Hiromichi Atsuumi

发明人： Kohji Sakai ,  Seizo Suzuki ,  Hiromichi Atsuumi

IPC分类号： G02B26/08

CPC分类号： G02B26/0841 ,  B41J2/473

摘要： An optical element can effectively correct misalignment of focused positions of optical spots and an optical spot pitch deviation with respect to image heights due to a refractive index distribution therein. The optical element includes a lens, which serves as an optical system in an optical scanner, is shaped in such a profile that misalignment of a focused position of the optical spot due to the refractive index distribution is corrected for image heights.