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    • 72. 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。
    • 74. 发明授权
    • Optical scanning device and a scanning lens therefor
    • 光学扫描装置及其扫描透镜
    • US06222662B1
    • 2001-04-24
    • US09574074
    • 2000-05-18
    • Seizo SuzukiYoshinori HayashiKouji Masuda
    • Seizo SuzukiYoshinori HayashiKouji Masuda
    • G02B2608
    • G02B26/125G02B13/0005Y10S359/90
    • An optical scanning device of the present invention includes a simple scanning lens. At least one of opposite surfaces of the lens has a nonarcuate shape, as seen in a polarization plane. At least one of the opposite surfaces is a special toric surface. Further, in a plane perpendicular to the polarization plane, the lens has a meniscus shape concave toward a polarizer. With this configuration, the lens achieves a desirable uniform velocity scanning capability and a desirable field curvature in the main scanning direction. The lens is therefore free from errors in configuration ascribable to molding while reducing the limitation on the tolerance of optical elements in the optical axis direction as to assembly.
    • 本发明的光学扫描装置包括简单的扫描透镜。 透镜的相对表面中的至少一个具有非偏光形状,如在偏振平面中所见。 相对表面中的至少一个是特殊的复曲面。 此外,在垂直于偏振面的平面中,透镜具有向偏振器凹入的弯月形状。 利用这种配置,透镜在主扫描方向上实现期望的均匀速度扫描能力和期望的场曲率。 因此,由于在组装时减少了光学元件在光轴方向上的公差的限制,因此,透镜在构造中不存在由于成型造成的错误。
    • 76. 发明授权
    • Optical scanning device and a scanning lens therefor
    • 光学扫描装置及其扫描透镜
    • US5875051A
    • 1999-02-23
    • US738979
    • 1996-10-24
    • Seizo SuzukiYoshinori HayashiKouji Masuda
    • Seizo SuzukiYoshinori HayashiKouji Masuda
    • G02B13/00G02B26/12G02B26/08
    • G02B26/125G02B13/0005
    • An optical scanning device includes a single scanning lens. At least one of opposite surfaces of the lens has a nonarcuate shape, as seen in a polarization plane. At least one of the opposite surfaces is a special toric surface. Further, in a plane perpendicular to the deflection plane, the lens has a meniscus shape and has the concave surface facing toward a deflector. With this configuration, the lens achieves a desirable uniform velocity scanning capability and a desirable field curvature in the main scanning direction. The lens is therefore free from errors in configuration ascribable to molding while reducing the limitation on the tolerance of optical elements in the optical axis direction as to assembly.
    • 光学扫描装置包括单个扫描透镜。 透镜的相对表面中的至少一个具有非偏光形状,如在偏振平面中所见。 相对表面中的至少一个是特殊的复曲面。 此外,在垂直于偏转平面的平面中,透镜具有弯月形状并且具有面向偏转器的凹面。 利用这种配置,透镜在主扫描方向上实现期望的均匀速度扫描能力和期望的场曲率。 因此,由于在组装时减少了光学元件在光轴方向上的公差的限制,因此,透镜在构造中不存在由于成型造成的错误。