The growth sector boundaries in natural beryls have been investigated by means of X-ray topography and optical birefringence topography.
用X射线形貌术及光学双折射形貌术对天然绿柱石晶体中的生长区界面进行了研究。
The method has been successfully used in the system for measuring the 3-d surface topography of diffractive optical elements.
此方法已成功地应用于自行研制的衍射光学元件三维表面形貌测量系统中。
The surfaces of diffraction optical element (DOE) are often deep and discontinuous, which lead to some difficulties for measurement of the 3-d surface topography of DOE.
衍射光学元件(DOE)表面形貌的测量需要解决因表面结构深度较大和表面不连续给测量带来的困难。
In the large optical components topography measurement system, the accuracy of measurement is greatly related to laser spot segmentation, centroid extraction and back surface spot removal.
大口径光学组件面形检测系统中，激光光斑的分割、质心提取和背表面光斑的自动剔除算法关系到系统的检测精度。
In the large optical components topography measurement system, the accuracy of measurement is greatly related to laser spot segmentation, centroid extraction and back surface spot removal.
大口径光学组件面形检测系统中，激光光斑的分割、质心提取和背表面光斑的自动剔除算法关系到系统的检测精度。
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