These gratings act as prisms by diffracting light within the fiber.
通过光纤中的衍射光，这些光栅可以被看作三棱镜。
A method of spatial straightness measurement by means of non diffracting beam and moire fringe is proposed.
提出用无衍射光和莫尔条纹进行空间直线度测量的技术。
Color effect compositions, radiation diffracting material, and method for fixing particle array in substrate.
有色组合物，辐射衍射材料，以及将颗粒的阵列固定在基体中的方法。
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。
Precise positioning using moire signal from double grating diffracting has high sensitivity and positioning accuracy.
利用双光栅衍射得到的激光莫尔信号进行精密定位具有很高的灵敏度和定位精度。
In this system, the dual non diffracting beams are used as incident beams. The system structure is simple and flexible.
系统以双无衍射光束作为测量光束，结构简单灵活。
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。
Basing on the light diffracting theory of Kirchhoff, we obtain the expression for the intensity of speckles in deep Fresnel diffraction region.
本文利用基尔霍夫近似理论，对菲涅耳极深区相干散斑和部分相干散斑进行了理论研究和计算模拟。
The losses Bessel-Gaussian beams, a kind of non-diffracting beam, propagating through a hard aperture are studied, and a general formula is derived.
对无衍射光束———贝塞尔高斯光束通过硬边光阑时的功率损耗作了研究，给出了普适的损耗公式。
The axcion can produce a non-diffracting beam, and it is used to extend depth of field of optical imaging system, and the theorem of this method is analyzed in this paper.
利用轴锥镜能产生无衍射光的特性，分析了将其应用到成像系统中增大景深的原理。
Based on the theories of non-diffracting imaging system in coherent light, the measurement system of point spread function (PSF) of non-diffracting imaging system has been presented.
在分析相干光照明下无衍射成像系统理论的基础上，设计了无衍射光成像系统的点扩散函数的测量系统。
A novel technique to produce the self-imaging Talbot effect, nearly non-diffracting bottle beams which were interfered by the two Bessel beams generated from the axicons was proposed.
提出一种由轴棱锥产生的贝塞尔光干涉整形得到具有自成像塔尔博特效应的近似无衍射局域空心光束的新方法。
There is a reducing-enlarging relation between the dimension and the diffracting intensity for an aperture. This relation may be used for the engineering measurement of tiny dimension.
衍射孔径线度与衍射光强存在一定的缩放关系，这一关系可以应用于微小尺寸的工程测量。
In the purpose of using non-diffracting beams to extending the depth-of-field of optical imaging system, the variation rules of the central spot of non-diffracting beams are investigated.
为了将无衍射光应用于大景深成像系统中，分析了无衍射光束中心光斑的变化规律。
The optical properties, and hydrodynamics characteristics, as well as the key coupling technologies between the non-diffracting beam and the water jet, have been deeply analyzed and researched.
深入研究了水射流导引激光加工系统的光学特性、水光纤的流体力学特性及耦合系统的关键技术。
The optical properties, and hydrodynamics characteristics, as well as the key coupling technologies between the non-diffracting beam and the water jet, have been deeply analyzed and researched.
深入研究了水射流导引激光加工系统的光学特性、水光纤的流体力学特性及耦合系统的关键技术。
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