Which one of the following characteristics best describes optical scanning devices?

其中之一，有以下特点最能描述光学扫描装置？

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Optical coupling and transmission performing with optic fiber and fiber optic face plate, a new sector beam linear array scanning X-ray detector technique based on plane array CCD devices is proposed.

提出了一种基于面阵CCD器件，采用光纤和光纤面板进行光耦合及传输的扇形束线阵扫描X射线新型探测器技术。

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There are three types of scanning devices: optical scanners, bar code readers, and char and mark recognition devices.

扫描设备有三种类型：光学扫描器，条码阅读器，和char和标记识别设备。

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