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    • 11. 发明授权
    • Optical scanning device, line-image forming optical system therein, imaging adjustment method in the device and image forming apparatus
    • 光扫描装置,其中的线图像形成光学系统,装置中的成像调整方法和图像形成装置
    • US06509995B1
    • 2003-01-21
    • US09653330
    • 2000-08-31
    • Seizo SuzukiMagane AokiHiromichi AtsuumiKohji Sakai
    • Seizo SuzukiMagane AokiHiromichi AtsuumiKohji Sakai
    • G02B2608
    • G02B26/128
    • 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.
    • 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。
    • 12. 发明授权
    • Optical scanning apparatus
    • 光学扫描装置
    • US06256133B1
    • 2001-07-03
    • US09344633
    • 1999-06-25
    • Seizo SuzukiMagane AokiKohji Sakai
    • Seizo SuzukiMagane AokiKohji Sakai
    • G02B2608
    • G02B26/125
    • An optical scanning apparatus is constructed such that a light beam from a light source is formed into a linear image extending in a main scanning direction and is caused to be deflected at a constant velocity by virtue of a light deflecting system having a deflective reflecting surface which is located in a vicinity of an image formation position of the linear image. The deflected light beam is allowed to transmit through a scanning image formation lens so as to be converged into a beam spot on a surface to be scanned, thus causing the beam spot to scan the surface to be scanned at a constant speed. The scanning image formation lens is formed by more than two lens elements and has at least one special surface special surface in which a sub-scanning curvature changes in a main scanning direction according to a distance from an optical axis toward a periphery of the lens surface such that a line passing through centers of curvature in the sub scanning curvature is curved, and at least one of the special surfaces is formed so that the change of a sub-scanning curvature is non-symmetrical in the main scanning direction and the curvature has at least two or more than two extreme values.
    • 光学扫描装置被构造成使得来自光源的光束被形成为在主扫描方向上延伸的线性图像,并且由于具有偏转反射表面的光偏转系统而被以恒定速度偏转, 位于线性图像的图像形成位置附近。 允许偏转的光束通过扫描图像形成透镜传播,以便会聚到要扫描的表面上的光束点中,从而使光斑以恒定的速度扫描待扫描的表面。 扫描图像形成透镜由多于两个透镜元件形成,并且具有至少一个特殊表面特殊表面,其中副扫描曲率沿主扫描方向根据从光轴朝向透镜表面的周边的距离而变化 使得通过在副扫描曲率中的曲率中心的线弯曲,并且形成至少一个特殊表面,使得副扫描曲率的变化在主扫描方向上不对称,并且曲率具有 至少两个或两个以上的极值。
    • 14. 发明授权
    • Method and apparatus for optical scanning capable of efficiently reducing an image surface distortion
    • 能够有效降低图像表面失真的光学扫描方法和装置
    • US07271938B2
    • 2007-09-18
    • US10345365
    • 2003-01-16
    • Atsushi KawamuraMagane Aoki
    • Atsushi KawamuraMagane Aoki
    • H04N1/46
    • G02B26/123
    • An optical scanning apparatus includes mechanisms for light modulation, light imaging, light deflecting, and light scanning. The light modulation mechanism includes at least one light modulation device including light modulation elements, and is configured to emit modulated light. The light modulation elements are arranged in a single-dimension formation in a first direction orthogonal to a light axis of the modulated light. The light imaging mechanism transfers the modulated light as light of an object to form an image of the object on an image screen. The light deflecting mechanism deflects the light of the object in a direction orthogonal to the first direction and the axis of the light. The light scanning mechanism is disposed on a passage of the deflected light to scan that light.
    • 光学扫描装置包括光调制,光成像,光偏转和光扫描的机构。 光调制机构包括至少一个包括光调制元件的光调制装置,并且被配置为发射调制光。 光调制元件在与调制光的光轴正交的第一方向上以单维形式配置。 光成像机构将调制光作为物体的光转移,以在图像屏幕上形成物体的图像。 光偏转机构使物体的光在与第一方向和光轴正交的方向上偏转。 光扫描机构设置在偏转光的通道上以扫描该光。
    • 16. 发明授权
    • Optical scanning device and image forming apparatus
    • 光学扫描装置和图像形成装置
    • US06388792B1
    • 2002-05-14
    • US09612634
    • 2000-07-07
    • Hiromichi AtsuumiSeizo SuzukiMagane AokiKohji Sakai
    • Hiromichi AtsuumiSeizo SuzukiMagane AokiKohji Sakai
    • G02B2608
    • G02B13/0005
    • 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’.
    • 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。
    • 18. 发明授权
    • Scanning image forming lens and optical scanning apparatus
    • US06348989B2
    • 2002-02-19
    • US09867318
    • 2001-05-29
    • Magane AokiKohji Sakai
    • Magane AokiKohji Sakai
    • G02B2608
    • G02B26/125Y10S359/90
    • A scanning and image forming lens system in an optical scanning apparatus optical scans a surface to be scanned by deflecting a luminous flux emitted from a light source in a direction corresponding to a main scanning direction via an optical deflector at equiangular velocity. The scanning image forming lens system transmits the luminous flux deflected by the optical deflector so as to condense the luminous flux into an optical beam spot on the surface to be scanned and to scan the surface to be scanned with the optical beam spot. The scanning image forming lens system includes one or more image forming optical elements including at least one lens. At least one lens surface of the at least one lens of the scanning image forming lens system has a non-arc shape in a sub scanning cross section. The non-arc shape changes according to a position in a direction that is substantially perpendicular to the sub scanning cross section such that a positional deviation of the optical beam waist of the deflected luminous flux from the surface to be scanned at each position in the direction perpendicular to the sub scanning cross section, which is caused by a paraxial curvature of field of the scanning image forming lens system in a sub scanning direction, is corrected.