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    • 9. 发明授权
    • Information reader for optically reading code on object
    • 用于光学读取对象上的代码的信息读取器
    • US07871003B2
    • 2011-01-18
    • US11826551
    • 2007-07-17
    • Manabu MiyazakiKunihiko ItoKoji Konosu
    • Manabu MiyazakiKunihiko ItoKoji Konosu
    • G06K7/14G06K7/10
    • G06K7/10881G06K7/10574
    • An information reader has blocks of bright field illuminating units illuminating an information code directly marked on an object with first lights to regularly reflect the lights on the code, blocks of dark field illuminating units illuminating the code with second lights to irregularly reflect the lights on the code, an optical system, and a control section lighting the blocks of bright and dark field illuminating units by turns or simultaneously. The optical system forms an image of the code from each of the first and second lights or a combination of the first and second lights reflected on the code and reads the code from the images. The first lights are transmitted along an optical axis of the optical system. The second lights are transmitted toward the optical axis while slightly shifted toward the code.
    • 信息读取器具有亮场照明单元的块,用第一灯照亮直接标记在物体上的信息代码,以定期反映代码上的光,暗场照明单元的块用第二个光照亮代码以不规则地反射在 代码,光学系统和控制部分匝或同时点亮亮场和暗场照明单元的块。 光学系统从第一和第二光源中的每一个形成代码的图像,或者在代码上反射的第一和第二光的组合,并从图像读取代码。 第一光沿光学系统的光轴传输。 第二个光朝向光轴传输,同时向着代码移动。