diffracting

The non diffracting beam is used as the measuring beam and a virtual detector is used to expand detector size.
该系统用无衍射光作测量光束，用虚拟探测器扩展探测器尺寸。
The non-diffracting beam is firstly transformed to a ring light source by the first lens of telescope.
该方法是基于无衍射光和环光源之间的透镜变换关系。
The outcome provides stated academic gist to the applications of non-diffracting beams in imaging system.
所得的结果为无衍射光应用于成像系统提供了理论依据。
The interference pattern of two non-diffracting beams is analyzed.
By using the theory of diffracting integral, the optical field distribution of plane waves passing through an axicon is derived.
利用衍射积分理论，导出平面波通过轴棱锥后的光场分布。
A method to center an image by brightness gradient is proposed based on the features of the non-diffracting laser circular image.
为有效识别光斑中心，针对无衍射激光斑光图像特点，提出了一种由亮度梯度确定图像中心的方法。
The non-diffracting beam has the characteristics of focal segment, so it can be used to extend the depth-of-field of an imaging system.
本文根据无衍射光具有线焦的特性，将其应用于成像系统中以增大光学系统的景深。
Axicon is an common optical element which is used to produce non-diffracting beams.