scanning plane

Describes several measuring methods of flatness of large plane. Analyzes the characteristics and error of these methods including indirect measuring method, dual laser beams scanning method, laser criterion line scanning method, diffraction plane criterion method and level surface method.

叙述了几种大平面平面度的测量方法，分析了间接测量法、激光双光束扫描法、激光准直扫射法、衍射平面基准法、液面法等几种方法的特点及其测量误差。

The laser Omni-directional bar code scanner introduced here mainly consists of a holographic disk which as a plane optical element is to realize the laser beam deflection and focusing, as well as a series of mirrors designed for a scanning space.

本文介绍的激光多方位条码扫描器采用了全息光盘作为平面光学元件来实现激光束的扫描偏转和聚焦，设计了多面反射镜光学系统以形成多方位的空间扫描网。

Using dual galvanometer optical scanning head as the reflecting type optic fiber confocal scanning microscope's scanning outfit can achieve the fast scanning to plane image, but there exists distortion and vignetting.

以双振镜光学扫描头作为反射式光纤共焦扫描显微镜的平面扫描机构可以实现对平面图像的快速扫描，但存在着畸变和渐晕问题。

The scanning plane of the coronal dynamic keyhole imaging was parallel to the combining site.

冠状位动态匙孔成像扫描平面与垂体结合部平行。

The plane scanning mode and circle scanning mode were pretended. The method by changing parameters during the scanning course and combining the different scanning data was provided to realize adaptive distribution of measurement points.

设计了平面扫描和旋转扫描双模式方式，通过在扫描过程中改变扫描参数和多次扫描拼接的方法实现扫描点的疏密分布；