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热词
    • 10. 发明授权
    • Image reading unit and image reader
    • 图像读取单元和图像读取器
    • US07894105B2
    • 2011-02-22
    • US11037739
    • 2005-01-18
    • Mitsuru Amimoto
    • Mitsuru Amimoto
    • H04N1/04
    • H04N1/1017H04N1/02835H04N1/0423H04N1/0452H04N1/1026H04N1/1043H04N1/1048H04N1/193H04N2201/0408H04N2201/0418
    • An image reader includes two rows of image reading element arrays, that is, a first image reading element array and a second image reading element array, and a first rod lens array and a second rod lens array, disposed in correspondence with the first and second image reading element arrays and having different focal positions, in order to read an image on a transmission original in optimal focus with a CIS scanner using the rod lens arrays as when an image on a reflection original is read. The second image reading element array provides higher resolution, and has a shorter reading length. The focal length of the second rod lens array is greater than that of the first rod lens array.
    • 图像读取器包括两排图像读取元件阵列,即第一图像读取元件阵列和第二图像读取元件阵列,以及与第一和第二图像读取元件阵列对应地配置的第一棒状透镜阵列和第二棒状透镜阵列 图像读取元件阵列并且具有不同的焦点位置,以便如同在读取反射原稿上的图像时一样使用棒状透镜阵列的CIS扫描器以最佳焦点读取传输原稿上的图像。 第二图像读取元件阵列提供更高的分辨率,并具有更短的读取长度。 第二棒状透镜阵列的焦距大于第一棒状透镜阵列的焦距。