公开(公告)号：US07586661B2

公开(公告)日：2009-09-08

申请号：US11771275

申请日：2007-06-29

Applicant: Daisuke Ichii

Inventor： Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/124 ,  G02B7/008 ,  G02B26/125 ,  G02B27/0031 ,  G02B27/0037 ,  G02B27/4211 ,  G02B27/4227 ,  G02B27/4283

Abstract: A coupling optical system that includes a coupling lens, a linear-image forming lens, and an aperture couples light beams emitted from a light source to form a light flux. A deflector scans the light flux in a main scanning direction to form an image as a scanning line on a surface to be scanned through first and second scanning lenses. While an image is being formed on an image plane, the image plane is moved in a direction perpendicular to the main scanning direction. The linear-image forming lens has a diffractive optical surface capable of collecting light in a sub-scanning direction. The temperature dependence dλ/dT of wavelength of the light source satisfies dλ/dT

Abstract translation: 一种耦合光学系统，其包括耦合透镜，线性图像形成透镜以及从光源发射的光束以形成光束。 偏转器沿主扫描方向扫描光通量，以便通过第一和第二扫描透镜在要扫描的表面上形成扫描线的图像。 当在图像平面上形成图像时，图像平面在垂直于主扫描方向的方向上移动。 线性图像形成透镜具有能够沿副扫描方向收集光的衍射光学表面。 光源的波长的温度依赖性λλ/ dT满足dlambda / dT <0.15。

公开(公告)号：US20090175657A1

公开(公告)日：2009-07-09

申请号：US12348110

申请日：2009-01-02

Applicant: Masako Yoshii ,  Seizo Suzuki ,  Yoshinori Hayashi ,  Daisuke Ichii

Inventor： Masako Yoshii ,  Seizo Suzuki ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC: G03G15/04 ,  G03G15/22

CPC classification number: G03G15/326 ,  G03G15/0435 ,  G03G2215/0404 ,  G03G2215/0407

Abstract: In an optical scanning device, when pixel density is taken to be n, number of the light beams is taken to be b, and number of the deflection surfaces of a deflecting unit is taken to be p, a spatial frequency S denoted by S=1/(1/(25.4/n×b×p) is within a range of a spatial frequency characteristic for a visual perception system of a high relative luminous efficiency. When spacing between ends in a sub-scanning direction of a scanning line formed by one scan by the deflection unit is taken to be L1, and spacing between all progressive scanning lines at the surface to be scanned is taken to be L2, then L1>(k−1)×L2 is satisfied, where k is a total number of light emitting points of a light source.

Abstract translation: 在光扫描装置中，当像素密度为n时，将光束的数量取为b，将偏转单元的偏转面的数量取为p，将由S = 1 /（1 /（25.4 / n×b×p））在高相对发光效率的视觉感知系统的空间频率特性的范围内，当通过一次扫描形成的扫描线的副扫描方向的端部之间的间隔 将偏转单元取为L1，将要扫描的表面上的所有逐行扫描线之间的间隔设为L2，则满足L1>（k-1）×L2，其中k是发光点的总数 的光源。

公开(公告)号：US20080192319A1

公开(公告)日：2008-08-14

申请号：US12025343

申请日：2008-02-04

Applicant: Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

Inventor： Naoki Miyatake ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Naoto Watanabe ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/123

Abstract: An optical scanning device includes a coupling optical system, a light source including a plurality of light emitting units for emitting light beams, and a deflector including a deflecting surface for deflecting the light beams. The coupling optical system is arranged on an optical path between the light source and the deflector so that the light beams enter the deflector at an angle with respect to a normal direction of the deflecting surface in a sub-scanning direction. The light emitting units are arranged two-dimensionally, and a distance between two light emitting units at opposite ends in a main scanning direction is smaller than a distance between two light emitting units at opposite ends in the sub-scanning direction.

Abstract translation: 光学扫描装置包括耦合光学系统，包括用于发射光束的多个发光单元的光源和包括用于偏转光束的偏转表面的偏转器。 耦合光学系统布置在光源和偏转器之间的光路上，使得光束在副扫描方向上相对于偏转表面的法线方向以一定角度进入偏转器。 发光单元被二维地布置，并且主扫描方向的相对端的两个发光单元之间的距离小于在副扫描方向的相对端的两个发光单元之间的距离。

公开(公告)号：US20080100895A1

公开(公告)日：2008-05-01

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：US20080055692A1

公开(公告)日：2008-03-06

申请号：US11844643

申请日：2007-08-24

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

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

IPC: G02B26/10 ,  G02F1/00

CPC classification number: G02B26/124 ,  G02B5/1876 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: A coupling lens arranged on an optical path of an optical beam from a VCSEL, which has a refraction plane and a diffraction plane that respectively change a power according to a temperature change and suppresses a beam-waist position change in a main-scanning direction and a sub-scanning directions on the scanning surface caused by the temperature change, by a wavelength change of the optical beam caused by power changes of the refraction plane and the diffraction plane and the temperature change. A deflecting unit deflects the optical beam that passed through the coupling lens. A scanning optical system condenses a deflected optical beam on the scanning surface.

Abstract translation: 耦合透镜，布置在来自VCSEL的光束的光路上，所述光束具有根据温度变化分别改变功率的折射面和衍射面，并抑制主扫描方向上的束腰位置变化， 通过由折射平面和衍射面的功率变化引起的光束的波长变化和温度变化，由温度变化引起的扫描表面上的副扫描方向。 偏转单元使通过耦合透镜的光束偏转。 扫描光学系统将偏转的光束冷凝在扫描表面上。