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1. 发明申请

US20070058233A1 Light scanning unit 审中-公开
标题翻译：光扫描单元
公开(公告)号：US20070058233A1
公开(公告)日：2007-03-15
申请号：US11387930
申请日：2006-03-24
申请人： Hyung-soo Kim , Gi-sung Park , Kyung-nam Jang , Jung-hyuck Cho
发明人： Hyung-soo Kim , Gi-sung Park , Kyung-nam Jang , Jung-hyuck Cho
IPC分类号： G02B26/08
CPC分类号： G02B26/125 , G02B13/0005
摘要： A light scanning unit includes a light source, a collimating unit for collimating light emitted from the light source, and a rotatory polygonal mirror for deflecting light radiated from the collimating unit. One sheet of an f-theta lens scans the light deflected by the rotatory polygonal mirror to a plane at a substantially uniform velocity to form an image on the plane and to correct a field curvature aberration in a main scanning direction. The f-theta lens may be a meniscus lens having a convex surface directed toward a deflection plane. A curvature of the f-theta lens in the main scanning direction differs from a curvature in a sub scanning direction. The f-theta lens has an aspherical shape in which a curvature in the sub scanning direction is varied continuously. A ratio of the radius of curvature of a first surface to the radius of curvature of a second surface at an optical axis is approximately at least 1.7.
摘要翻译：光扫描单元包括光源，用于准直从光源发射的光的准直单元和用于偏转从准直单元辐射的光的旋转多面镜。一张f-theta透镜将由旋转多面镜偏转的光以基本上均匀的速度扫描到平面上，以在平面上形成图像并校正主扫描方向上的场曲率像差。 f-theta透镜可以是具有朝向偏转平面的凸表面的弯月透镜。在主扫描方向上的f-theta透镜的曲率与副扫描方向上的曲率不同。该f-theta透镜具有副扫描方向上的曲率连续变化的非球面形状。光轴的第一表面的曲率半径与第二表面的曲率半径之比约为1.7。

2. 发明申请

US20070091403A1 Light scanning system and image forming apparatus employing the same 有权
标题翻译：光扫描系统和采用该光扫描系统的图像形成装置
公开(公告)号：US20070091403A1
公开(公告)日：2007-04-26
申请号：US11541648
申请日：2006-10-03
申请人： Kyung-nam Jang
发明人： Kyung-nam Jang
IPC分类号： G02B26/08
CPC分类号： G02B26/105
摘要： A light scanning system is provided that includes a light source unit emitting light, and a light deflector having a sinusoidally vibrating deflecting surface that deflects and scans the light emitted from the light source unit. When the deflecting surface is positioned to direct light to the center of a scan range, the maximum deflection angle Φ0 of the deflecting surface satisfies 20°≦Φ0≦25°.
摘要翻译：提供一种光扫描系统，其包括发射光的光源单元和具有偏转并扫描从光源单元发射的光的正弦振动偏转表面的光偏转器。当偏转表面定位成将光引导到扫描范围的中心时，偏转表面的最大偏转角Phi <0> <0> <！ - SIPO

3. 发明授权

US07518773B2 Light scanning system and image forming apparatus employing the same 有权
标题翻译：光扫描系统和采用该光扫描系统的图像形成装置
公开(公告)号：US07518773B2
公开(公告)日：2009-04-14
申请号：US11541648
申请日：2006-10-03
申请人： Kyung-nam Jang
发明人： Kyung-nam Jang
IPC分类号： G02B26/08
CPC分类号： G02B26/105
摘要： A light scanning system is provided that includes a light source unit emitting light, and a light deflector having a sinusoidally vibrating deflecting surface that deflects and scans the light emitted from the light source unit. When the deflecting surface is positioned to direct light to the center of a scan range, the maximum deflection angle Φ0 of the deflecting surface satisfies 20°≦Φ0≦25°.
摘要翻译：提供一种光扫描系统，其包括发射光的光源单元和具有偏转并扫描从光源单元发射的光的正弦振动偏转表面的光偏转器。当偏转表面定位成将光引导到扫描范围的中心时，偏转表面的最大偏转角Phi0满足20°<= Phi0 <= 25°。

4. 发明申请

US20070013763A1 Laser scanning unit and image forming apparatus having the same 审中-公开
标题翻译：激光扫描单元和具有该激光扫描单元的图像形成装置
公开(公告)号：US20070013763A1
公开(公告)日：2007-01-18
申请号：US11385764
申请日：2006-03-22
申请人： Hyung-soo Kim , Kyung-nam Jang
发明人： Hyung-soo Kim , Kyung-nam Jang
IPC分类号： B41J2/385
CPC分类号： G02B26/125 , G02B27/0031 , H04N1/00525 , H04N1/1135 , H04N1/12 , H04N1/506 , H04N2201/0082
摘要： A laser scanning unit includes a first optical system having a plurality of beam sources. A first optical deflector respectively deflects beams emitted from the beam sources in different directions. A plurality of scanning lenses correct errors of the beams deflected from the first optical deflector. A plurality of reflection mirrors respectively reflect the beams passing through the scanning lenses to a plurality of surfaces to be scanned. A second optical system has a plurality of beam sources. A second optical deflector respectively deflects beams emitted from the beam sources of the second optical system in different directions. A plurality of scanning lenses correct errors of the beams deflected from the second optical deflector. A plurality of reflection mirrors respectively reflect the beams passing through the scanning lenses to a plurality of surfaces to be scanned. At least the first and the second optical deflectors of the first and the second optical systems are respectively arranged on planes different from each other.
摘要翻译：激光扫描单元包括具有多个光束源的第一光学系统。第一光偏转器分别偏转从不同方向射束的光束。多个扫描透镜校正从第一光学偏转器偏转的光束的误差。多个反射镜将通过扫描透镜的光束分别反射到要扫描的多个表面。第二光学系统具有多个光束源。第二光偏转器分别使从第二光学系统的光束源发射的光束在不同方向上偏转。多个扫描透镜校正从第二光学偏转器偏转的光束的误差。多个反射镜将通过扫描透镜的光束分别反射到要扫描的多个表面。至少第一和第二光学系统的第一和第二光学偏转器分别布置在彼此不同的平面上。

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