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    • 32. 发明授权
    • Scanning and imaging lens, optical scanning device and image forming apparatus
    • 扫描和成像透镜,光学扫描装置和成像装置
    • US06448998B1
    • 2002-09-10
    • US09649179
    • 2000-08-29
    • Seizo SuzukiMagane AokiHiromichi AtsuumiKohji Sakai
    • Seizo SuzukiMagane AokiHiromichi AtsuumiKohji Sakai
    • B41J2700
    • B41J2/442G02B13/0005G02B26/125
    • 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.
    • 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。
    • 37. 发明授权
    • Optical scanning device, image forming apparatus, and optical scanning device designing method
    • 光学扫描装置,成像装置和光学扫描装置的设计方法
    • US08654168B2
    • 2014-02-18
    • US13556500
    • 2012-07-24
    • Kazuhiro AkatsuSeizo SuzukiMasaaki Ishida
    • Kazuhiro AkatsuSeizo SuzukiMasaaki Ishida
    • B41J15/14B41J27/00
    • G02B26/127B41J2/455B41J2/473
    • An optical scanning device including a light source having multiple light emitters; an optical element to reflect and transmit the emitted light beams; a photodetector to receive the reflected light beams; an aperture having an opening to shape the transmitted light beams; a light deflector to deflect the transmitted light beams; and a scanning optics to guide the deflected light beams to a scanning surface. The quantity of each of the light beams received by the photodetector is not less than 0.01 mW, and the size of a light receiving surface of the photodetector is determined such that even when the full width at half maximum of the emitted light beams changes, the rate of change of the ratio of the quantity of the light beams detected by the photodetector to the quantity of the light beams passing through the opening of the aperture is not greater than 4%.
    • 一种光学扫描装置,包括具有多个发光体的光源; 用于反射和透射发射的光束的光学元件; 用于接收反射光束的光电检测器; 具有用于使透射光束成形的开口的孔; 光偏转器,用于偏转透射光束; 以及用于将偏转的光束引导到扫描表面的扫描光学器件。 由光电检测器接收的每个光束的量不小于0.01mW,并且确定光电检测器的光接收表面的尺寸,使得即使当发射光束的最大半峰全部变化时, 由光检测器检测的光束的量与通过孔的开口的光束的量的比率的变化率不大于4%。
    • 38. 发明申请
    • OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, AND OPTICAL SCANNING DEVICE DESIGNING METHOD
    • 光学扫描装置,图像形成装置和光学扫描装置的设计方法
    • US20130033558A1
    • 2013-02-07
    • US13556500
    • 2012-07-24
    • Kazuhiro AKATSUSeizo SuzukiMasaaki Ishida
    • Kazuhiro AKATSUSeizo SuzukiMasaaki Ishida
    • B41J2/435G01D5/34
    • G02B26/127B41J2/455B41J2/473
    • An optical scanning device including a light source having multiple light emitters; an optical element to reflect and transmit the emitted light beams; a photodetector to receive the reflected light beams; an aperture having an opening to shape the transmitted light beams; a light deflector to deflect the transmitted light beams; and a scanning optics to guide the deflected light beams to a scanning surface. The quantity of each of the light beams received by the photodetector is not less than 0.01 mW, and the size of a light receiving surface of the photodetector is determined such that even when the full width at half maximum of the emitted light beams changes, the rate of change of the ratio of the quantity of the light beams detected by the photodetector to the quantity of the light beams passing through the opening of the aperture is not greater than 4%.
    • 一种光学扫描装置,包括具有多个发光体的光源; 用于反射和透射发射的光束的光学元件; 用于接收反射光束的光电检测器; 具有用于使透射光束成形的开口的孔; 光偏转器,用于偏转透射光束; 以及用于将偏转的光束引导到扫描表面的扫描光学器件。 由光电检测器接收的每个光束的量不小于0.01mW,并且确定光电检测器的光接收表面的尺寸,使得即使当发射光束的最大半峰全部变化时, 由光检测器检测的光束的量与通过孔的开口的光束的量的比率的变化率不大于4%。