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    Multiple beam raster output scanner optical system having telecentric chief exit rays
    41.
    发明公开
    Multiple beam raster output scanner optical system having telecentric chief exit rays 失效
    Optisches Mehrfachstrahlabtastsystem mit telezentrischen Hauptaustrittstrahlen。

    公开(公告)号：EP0661573A1

    公开(公告)日：1995-07-05

    申请号：EP94309698.2

    申请日：1994-12-22

    申请人： XEROX CORPORATION

    发明人： Fisli, Tibor ,  Grafton, David A.

    IPC分类号： G02B26/10 ,  G02B13/22

    CPC分类号： G02B26/123 ,  G02B13/22

    摘要： A system for eliminating differential scan line bow from raster output scanners aligns at least the chief exit ray (66, 67) of each scanning light beam (61, 62) with the system axis (65). By aligning the chief exit rays to be essentially parallel to the system axis, the overall bow is reduced, and the bow of different scan lines (63, 64) is essentially identical. Thus, bowed scan lines from different stations in a multi-station printer, or from different passes in a multi-pass printer are generally identical and aligned.

    摘要翻译： 用于从光栅输出扫描器消除差分扫描线弓的系统至少将每个扫描光束（61,62）的主出射光线（66,67）与系统轴线（65）对准。 通过将主出口光线对准于基本上平行于系统轴线的方向，整个弓形被减小，并且不同扫描线（63,64）的弓基本相同。 因此，来自多工位打印机中的不同站的弯曲扫描线或多路打印机中的不同路径的弓形扫描线通常是相同和对齐的。

    Telecentric imaging optical system
    44.
    发明公开
    Telecentric imaging optical system 失效
    Telezentrisches optisches Abbildungssystem。

    公开(公告)号：EP0555670A1

    公开(公告)日：1993-08-18

    申请号：EP93100878.3

    申请日：1993-01-21

    申请人： Dainippon Screen Mfg. Co., Ltd.

    发明人： Wakimoto,Zenji,c/o Dainippon Screen Mfg.Co.Ltd. ,  Hayashi,Takahisa,c/o Dainippon Screen Mfg.Co.Ltd.

    IPC分类号： G02B13/22 ,  G02B15/14

    CPC分类号： G02B13/22 ,  G02B15/173

    摘要： A telecentric imaging optical system comprises first and third lens systems each having a positive power, and a second lens system having a negative power. In the imaging optical system, the second lens system is disposed between the first and the third lens systems. The imaging optical system satisfies the following inequalities:

    f1/2.5
    f3/2.5

    where f1 is the focal length of the first lens system, f2 is that of the second lens system and f3 is that of the third lens system. A rear focal point of a composite lens system consisting of the first and the second lens systems substantially coincides with the front focal point of the third lens system. The telecentric imaging optical system has a large variable power ratio.

    摘要翻译： 远心成像光学系统包括各自具有正功率的第一和第三透镜系统以及具有负功率的第二透镜系统。 在成像光学系统中，第二透镜系统设置在第一和第三透镜系统之间。 成像光学系统满足以下不等式：f1 / 2.5 <-f2 <2.f1 f3 / 2.5 <-f2 <2.f3其中f1是第一透镜系统的焦距，f2是第二透镜系统的焦距， f3是第三透镜系统的f3。 由第一和第二透镜系统组成的复合透镜系统的后焦点基本上与第三透镜系统的前焦点重合。 远心成像光学系统具有很大的可变功率比。