公开(公告)号：US20100060712A1

公开(公告)日：2010-03-11

申请号：US11993406

申请日：2007-04-27

Applicant: Shunichi Sato ,  Akihiro Itoh ,  Hiroyoshi Shouji ,  Yoshinori Hayashi ,  Daisuke Ichii ,  Kei Hara ,  Mitsumi Fujii

Inventor： Shunichi Sato ,  Akihiro Itoh ,  Hiroyoshi Shouji ,  Yoshinori Hayashi ,  Daisuke Ichii ,  Kei Hara ,  Mitsumi Fujii

IPC: B41J2/45 ,  H01S5/00 ,  G02B26/10 ,  B41J2/455

CPC classification number: B41J2/45 ,  B41J2/473 ,  B82Y20/00 ,  G02B26/123 ,  H01S5/18311 ,  H01S5/18358 ,  H01S5/3432 ,  H01S5/423

Abstract: A surface-emission laser array comprises a plurality of surface-emission laser diode elements arranged in the form of a two-dimensional array, wherein a plurality of straight lines drawn perpendicularly to a straight line extending in a first direction from respective centers of the plurality of surface emission laser diode elements aligned in a second direction perpendicular to the first direction, are formed with generally equal interval in the first direction, the plurality of surface-emission laser diode elements are aligned in the first direction with an interval set to a reference value, and wherein the number of the surface-emission laser diode elements aligned in the first direction is smaller than the number of the surface-emission laser diode elements aligned in the second direction.

Abstract translation: 表面发射激光器阵列包括以二维阵列的形式布置的多个表面发射激光二极管元件，其中垂直于从第一方向延伸的直线绘制的多条直线从多个 在与第一方向垂直的第二方向上排列的表面发射激光二极管元件在第一方向上以大致相等的间隔形成，多个表面发射激光二极管元件在第一方向上对准，间隔设置为基准 并且其中在所述第一方向上排列的所述表面发射激光二极管元件的数量小于在所述第二方向上排列的所述表面发射激光二极管元件的数量。

公开(公告)号：US07663657B2

公开(公告)日：2010-02-16

申请号：US11782268

申请日：2007-07-24

Applicant: Daisuke Ichii ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Kenichiro Saisho

Inventor： Daisuke Ichii ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Kenichiro Saisho

IPC: B41J15/14 ,  B41J27/00

CPC classification number: G03G15/326 ,  B41J2/455 ,  B41J2/473 ,  G02B13/0005 ,  G02B26/125 ,  G03G15/0435 ,  G03G2215/0404

Abstract: An optical scanning device includes a light source having light emitting points for emitting light beams, a coupling optical element that couples the light beams, a deflecting unit that deflects and scans the light beams, and a scanning optical system that focus the light beams to form an image. The optical scanning device satisfies the following condition: F tan(θ/2)+A

Abstract translation: 光学扫描装置包括具有用于发射光束的发光点的光源，耦合光束的耦合光学元件，偏转和扫描光束的偏转单元，以及聚焦光束以形成的扫描光学系统 一个图像。 光学扫描装置满足以下条件：F tan（θ/ 2）+ A

公开(公告)号：US20090315967A1

公开(公告)日：2009-12-24

申请号：US12478304

申请日：2009-06-04

Applicant: Yoshinori HAYASHI ,  Daisuke Ichii

Inventor： Yoshinori HAYASHI ,  Daisuke Ichii

IPC: B41J2/435

CPC classification number: B41J2/475 ,  G02B7/025 ,  G02B26/124 ,  G02B27/62

Abstract: An optical scanning device includes a lens having a negative optical power at least in a sub-scanning direction and a lens having a positive optical power at least in the sub-scanning direction between a light source and a deflecting unit. The optical scanning device further includes a coupling lens and an adjusting lens whose positions can be adjusted in an optical axis direction and then bonded with ultraviolet curing resin. Therefore, the magnification of an optical system can be adjusted and consequently a desired scan-line interval can be obtained.

Abstract translation: 光学扫描装置至少在副扫描方向上具有负光焦度的透镜和至少在光源和偏转单元之间的副扫描方向上具有正光焦度的透镜。 光学扫描装置还包括耦合透镜和调节透镜，其位置可以在光轴方向上调节，然后与紫外线固化树脂粘合。 因此，可以调整光学系统的放大率，并且因此可以获得期望的扫描线间隔。

公开(公告)号：US07626744B2

公开(公告)日：2009-12-01

申请号：US12031362

申请日：2008-02-14

Applicant: Nobuyuki Arai ,  Yoshinori Hayashi ,  Daisuke Ichii

Inventor： Nobuyuki Arai ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/123 ,  B82Y20/00 ,  G02B26/125 ,  H01S5/18311 ,  H01S5/3432 ,  H01S5/34326 ,  H01S5/4012 ,  H01S5/423

Abstract: By setting elements within the range that predetermined conditions are satisfied, for example, so that a size of a rotating polygon mirror is minimized, the rotating polygon mirror is made compact while the eclipse of light beams in the main scanning direction is prevented. The cost reduction of an apparatus is thus realized. The compact rotating polygon mirror reduces the consumption energy and the amount of heat generated in its drive system. Deteriorations in various optical characteristics including an increase in spot diameter of the light beam by temperature variation, uneven scanning pitch, and sub-scanning direction variation in beam pitch are suppressed.

Abstract translation: 通过设定满足规定条件的范围内的元件，例如使得旋转多面镜的尺寸最小化，可以防止光束在主扫描方向上的蚀刻而使旋转多面镜变小。 从而实现装置的成本降低。 紧凑型旋转多面镜减少了其驱动系统中的消耗能量和产生的热量。 通过温度变化引起的光束直径增加，扫描间距不均匀，光束间距的副扫描方向变化等各种光学特性的劣化被抑制。

公开(公告)号：US07554708B2

公开(公告)日：2009-06-30

申请号：US12230077

申请日：2008-08-22

Applicant: Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

Inventor： Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/125 ,  G02B26/124 ,  G02B27/0031 ,  G02B27/0037 ,  G02B27/4227 ,  G02B27/4283

Abstract: An optical scanning device includes a first optical element that converts a cross-section shape of a light beam from a semiconductor laser to a desired shape; a second optical element that guides the light beam output from the first optical element to an optical deflector that deflects the light beam; and a third optical element that gathers the light beam deflected by the optical deflector onto a surface to be scanned to form a light spot thereby optically scanning the surface. At least one of the first optical element, the second optical element, and the third optical element includes a resin-made lens, at least one of the resin-made lenses has a power diffracting surface, and a surface shape of at least one of power diffracting surfaces is formed so that a power of a diffracting portion and a power of a refractive portion are cancelled out.

Abstract translation: 光学扫描装置包括将来自半导体激光器的光束的横截面形状转换为期望形状的第一光学元件; 第二光学元件，其将从第一光学元件输出的光束引导到偏转光束的光学偏转器; 以及第三光学元件，其将由所述光学偏转器偏转的光束聚集到待扫描的表面上以形成光点，从而光学扫描所述表面。 所述第一光学元件，所述第二光学元件和所述第三光学元件中的至少一个包括树脂制透镜，所述树脂制透镜中的至少一个具有功率衍射面，并且表面形状中的至少一个 形成功率衍射面，使得衍射部分的功率和折射部分的功率被抵消。

公开(公告)号：US07545547B2

公开(公告)日：2009-06-09

申请号：US11877020

申请日：2007-10-23

Applicant: Yoshinori Hayashi ,  Nobuaki Kubo ,  Naoto Watanabe ,  Daisuke Ichii

Inventor： Yoshinori Hayashi ,  Nobuaki Kubo ,  Naoto Watanabe ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/124 ,  G02B26/125

Abstract: A scanning optical system leads the light fluxes deflected by the polygon mirror to a photosensitive drum. An absolute value of a lateral magnification in a main scanning direction is larger than an absolute value of a lateral magnification in a sub-scanning direction. Moreover, a beam diameter in the sub-scanning direction on a surface of the photosensitive drum is equal to or smaller than a beam diameter in the main scanning direction and larger than a scan line interval.

Abstract translation: 扫描光学系统将由多面镜偏转的光束引导到感光鼓。 主扫描方向的横向放大率的绝对值大于副扫描方向的横向倍率的绝对值。 此外，感光鼓的表面上的副扫描方向上的光束直径等于或小于主扫描方向上的光束直径并且大于扫描线间隔。

公开(公告)号：US20080204842A1

公开(公告)日：2008-08-28

申请号：US12031362

申请日：2008-02-14

Applicant: Nobuyuki Arai ,  Yoshinori Hayashi ,  Daisuke Ichii

Inventor： Nobuyuki Arai ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/123 ,  B82Y20/00 ,  G02B26/125 ,  H01S5/18311 ,  H01S5/3432 ,  H01S5/34326 ,  H01S5/4012 ,  H01S5/423

Abstract: By setting elements within the range that predetermined conditions are satisfied, for example, so that a size of a rotating polygon mirror is minimized, the rotating polygon mirror is made compact while the eclipse of light beams in the main scanning direction is prevented. The cost reduction of an apparatus is thus realized. The compact rotating polygon mirror reduces the consumption energy and the amount of heat generated in its drive system. Deteriorations in various optical characteristics including an increase in spot diameter of the light beam by temperature variation, uneven scanning pitch, and sub-scanning direction variation in beam pitch are suppressed.

Abstract translation: 通过设定满足规定条件的范围内的元件，例如使得旋转多面镜的尺寸最小化，可以防止光束在主扫描方向上的蚀刻而使旋转多面镜变小。 从而实现装置的成本降低。 紧凑型旋转多面镜减少了其驱动系统中的消耗能量和产生的热量。 通过温度变化引起的光束直径增加，扫描间距不均匀，光束间距的副扫描方向变化等各种光学特性的劣化被抑制。

公开(公告)号：US20080123159A1

公开(公告)日：2008-05-29

申请号：US11933800

申请日：2007-11-01

Applicant: Yoshinori HAYASHI ,  Naoto Watanabe ,  Daisuke Ichii ,  Nobuaki Kubo

Inventor： Yoshinori HAYASHI ,  Naoto Watanabe ,  Daisuke Ichii ,  Nobuaki Kubo

IPC: H04N1/04

CPC classification number: H04N1/1135 ,  G02B26/124

Abstract: A scanning unit in an image forming apparatus includes a light source, a coupling lens, an aperture, an image forming lens, and a polygon mirror. The light source includes a plurality of surface-emitting lasers. The coupling lens, the aperture, and the image forming lens are arranged on the optical path of light beams emitted by the light source. The polygon mirror deflects light beams of an image formed by the coupling lens towards a photosensitive drum for scanning. The focal length of the image forming lens in a sub-scanning direction is set to be equal to or smaller than an optical path length between the image forming lens and the aperture.

Abstract translation: 图像形成装置中的扫描单元包括光源，耦合透镜，孔，成像透镜和多面镜。 光源包括多个表面发射激光器。 耦合透镜，孔径和图像形成透镜布置在由光源发射的光束的光路上。 多面镜将由耦合透镜形成的图像的光束偏转到用于扫描的感光鼓。 图像形成透镜在副扫描方向上的焦距设定为等于或小于成像透镜和光圈之间的光程长度。

公开(公告)号：US20080025759A1

公开(公告)日：2008-01-31

申请号：US11782268

申请日：2007-07-24

Applicant: Daisuke Ichii ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Kenichiro Saisho

Inventor： Daisuke Ichii ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Kenichiro Saisho

IPC: G03G15/045 ,  G02B26/08

CPC classification number: G03G15/326 ,  B41J2/455 ,  B41J2/473 ,  G02B13/0005 ,  G02B26/125 ,  G03G15/0435 ,  G03G2215/0404

Abstract: An optical scanning device includes a light source having light emitting points for emitting light beams, a coupling optical element that couples the light beams, a deflecting unit that deflects and scans the light beams, and a scanning optical system that focus the light beams to form an image. The optical scanning device satisfies the following condition: F tan(θ/2)+A

Abstract translation: 光学扫描装置包括具有用于发射光束的发光点的光源，耦合光束的耦合光学元件，偏转和扫描光束的偏转单元，以及聚焦光束以形成的扫描光学系统 一个图像。 光扫描装置满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> F tan（θ/ 2）+ A 其中A是发光点和耦合光学元件的光轴之间的最大距离，θ是发散角（全宽半最大值） 的光束，F是耦合光学元件的焦距，D是耦合光学元件的有效半径。

公开(公告)号：US20070211324A1

公开(公告)日：2007-09-13

申请号：US11714162

申请日：2007-03-06

Applicant: Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

Inventor： Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/125 ,  G02B26/124 ,  G02B27/0031 ,  G02B27/0037 ,  G02B27/4227 ,  G02B27/4283

Abstract: An optical scanning device includes a first optical element that converts a cross-section shape of a light beam from a semiconductor laser to a desired shape; a second optical element that guides the light beam output from the first optical element to an optical deflector that deflects the light beam; and a third optical element that gathers the light beam deflected by the optical deflector onto a surface to be scanned to form a light spot thereby optically scanning the surface. At least one of the first optical element, the second optical element, and the third optical element includes a resin-made lens, at least one of the resin-made lenses has a power diffracting surface, and a surface shape of at least one of power diffracting surfaces is formed so that a power of a diffracting portion and a power of a refractive portion are cancelled out.

Abstract translation: 光学扫描装置包括将来自半导体激光器的光束的横截面形状转换为期望形状的第一光学元件; 第二光学元件，其将从第一光学元件输出的光束引导到偏转光束的光学偏转器; 以及第三光学元件，其将由所述光学偏转器偏转的光束聚集到待扫描的表面上以形成光点，从而光学扫描所述表面。 第一光学元件，第二光学元件和第三光学元件中的至少一个包括树脂制的透镜，树脂制透镜中的至少一个具有功率衍射面， 形成功率衍射面，使得衍射部分的功率和折射部分的功率被抵消。