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    • 2. 发明授权
    • Optical imaging sensor for a document processing device
    • 用于文件处理设备的光学成像传感器
    • US08401268B1
    • 2013-03-19
    • US12553296
    • 2009-09-03
    • Araz YacoubianFrank M. CsulitsDanny D. YangDouglas U. MennieTomasz M. Jagielinski
    • Araz YacoubianFrank M. CsulitsDanny D. YangDouglas U. MennieTomasz M. Jagielinski
    • G06K9/00G06Q40/00
    • G07D11/0084G07D7/121
    • A document processing device includes a controller and a sensor arrangement. The sensor arrangement illuminates a surface of documents. The gradient index lens array collects light reflected from the documents and transmits at least a portion of the collected reflected light onto a photodetector array. The photodetector array generates one or more electrical signals in response to a gradient index lens transmitting light thereon. The controller derives data including image data from the one or more electrical signals. The image data is reproducible as a visually readable image of the surface of the documents. The visually readable image has a resolution such that alphanumeric characters can be extracted from the visually readable image in response to the document remaining within a depth of field of the gradient index lens array while being transported via the transport mechanism. The depth of field is at least about 0.03 inches.
    • 文件处理装置包括控制器和传感器装置。 传感器装置照亮文件表面。 梯度折射率透镜阵列收集从文件反射的光,并将所收集的反射光的至少一部分透射到光电检测器阵列上。 光电检测器阵列响应于在其上透射光的梯度折射率透镜产生一个或多个电信号。 控制器从一个或多个电信号中导出包括图像数据的数据。 图像数据可再现为文档表面的视觉可读图像。 视觉上可读的图像具有分辨率,使得当通过传送机构传送时,响应于剩余在梯度折射率透镜阵列的景深内的文档,可从视觉上可读的图像中提取字母数字字符。 景深至少约0.03英寸。