公开(公告)号：US06606179B2

公开(公告)日：2003-08-12

申请号：US10279848

申请日：2002-10-25

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.

公开(公告)号：US06448998B1

公开(公告)日：2002-09-10

申请号：US09649179

申请日：2000-08-29

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： B41J2700

CPC分类号： B41J2/442 ,  G02B13/0005 ,  G02B26/125

摘要： A scanning and imaging lens condensing a light flux deflected by a deflector onto a surface to be scanned as a beam spot, has a plurality of lenses. A shape in main scanning cross section of each of both surfaces of a lens on a side of deflector has a convex shape, and a shape in main scanning cross section of at least one surface of the lens on the side of deflector is a non-arc shape. A shape in main scanning cross section of a first surface of a lens on a side of surface to be scanned has a convex shape, and a shape in main scanning cross section of at least one surface of the lens on the side of surface to be scanned is a non-arc shape. The scanning and imaging lens has at least two special toroidal surfaces in each of which a curvature in sub-scanning cross section varies in main scanning direction.

摘要翻译： 将由偏转器偏转的光束会聚到待扫描的表面上作为束斑的扫描和成像透镜具有多个透镜。 在偏转器一侧的透镜的两个表面的主扫描横截面中的形状具有凸形形状，并且在偏转器一侧的透镜的至少一个表面的主扫描横截面中的形状是非平面形状， 弧形。 在待扫描表面侧的透镜的第一表面的主扫描横截面中的形状具有凸形形状，并且在表面侧的透镜的至少一个表面的主扫描横截面中的形状为 扫描是非弧形的。 扫描和成像透镜具有至少两个特殊的环形表面，每个特殊的环形表面在副扫描横截面中的曲率在主扫描方向上变化。

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：US06801351B2

公开(公告)日：2004-10-05

申请号：US10278810

申请日：2002-10-24

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，以及具有至少具有正功率的变形表面的玻璃制镜片 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：US06388792B1

公开(公告)日：2002-05-14

申请号：US09612634

申请日：2000-07-07

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

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

IPC分类号： G02B2608

CPC分类号： G02B13/0005

摘要： An optical scanning device deflects one or a plurality of light flux(es) originating from a light source by an optical deflecting unit, gathers the deflected light flux(es) to cause it(them) to form a beam spot(s) on a surface to be scanned by a scanning and image-forming optical system, and, thus, performs optical scanning of the surface to be scanned. The scanning and image-forming optical system includes one or a plurality of optical component(s) including a lens. At least one surface of the lens included in the scanning and image-forming optical system is a sub-non-arc surface having an arc or non-arc shape in a main scanning plane, and a non-arc shape in a sub-scanning plane. The sub-non-arc surface is formed in a lens in which a diameter of a light flux passing through the scanning and image-forming optical system is largest in the sub-scanning plane’.

摘要翻译： 光学扫描装置通过光学偏转单元偏转来自光源的一个或多个光通量，收集偏转的光束以使它们（它们）在一个或多个光束上形成一束光斑 通过扫描和成像光学系统扫描的表面，并且因此对要扫描的表面进行光学扫描。 扫描和成像光学系统包括一个或多个包括透镜的光学部件。 包括在扫描和成像光学系统中的透镜的至少一个表面是在主扫描平面中具有弧或非弧形的亚非弧形表面，并且在副扫描中具有非弧形 飞机 副非弧面形成在副扫描平面'中通过扫描图像形成光学系统的光束的直径最大的透镜中。

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.