研制了一种新型的密封式超长精密钢带光栅线位移传感器。
A new linear displacement sensor with sealed ultra-long precision steel belt grating is studied.
粗光栅线位移传感器有很多优点，必须加上数控转换器后，才能与流行的数控系统接口。
The coarse grating linear displacement measuring Sensor has many advantages. But only with a numerical control converter, it can be interfaced with current NC machine tools.
讨论了输出正交正弦波的光栅尺（又称光栅线位移传感器）在位移测量中的脉冲细分原理。
The principle of pulse fine division in measurement of displacement by using grating scale (so called Grating line displacement transducer) with right-angled sinewave is discussed.
光栅轮中沿圆周径向排列的大量光栅线是采用光电绘图技术直接绘制在光电绘图仪胶片上形成的。
Large quantities of raster lines radial-arrayed along the circumference in the raster wheel are drafted on a photoelectric plotter film directly with the photoelectric draft technology.
数值模拟了SSD各参量，包括脉冲时间、调制频率、位相调制系数、光栅线色散系数等对束匀滑性能的影响。
The influences oft he parameters of the SSD technique on the beam smoothing performance are numeric ally analyzed.
光栅图像格式将图片存储为描述像素状态的位图，而不是记录图元（譬如，线和曲线）的长度和位置。
Raster image formats store the picture as a bitmap describing the state of pixels, as opposed to recording the length and locations of primitives such as lines and curves.
本系统不仅用于计量长光栅动态检测，还可用于感应同步器、磁栅、线纹尺等长度计量元件的动态检测。
The method is used not only in the measurement of grating, but also in the dynamic measurement of other metrological length components.
本文主要研究利用低线数计量光栅实现具有大量程、纳米级分辨率的位移测量理论及其关键技术。
In this dissertation. The theory and key technologies to measure long-range displacement with nanometer resolution by metrology grating is studied.
对压弯光栅的线密度进行了实验研究。
Primary researches on the groove density variations of bending grating were experimented.
本文在耦合模理论的基础上，运用有限差分法数值模拟了布拉格亮孤子在抛物线平方变迹光纤光栅中的传输特性。
On the basis of the coupled mode theory, the finite-difference method is used to simulate the transmission of Bragg bright solitons in parabolic squared-apodization fiber gratings.
而硬件系统采用的是光栅图形显示，字符和刻度线的旋转受屏幕分辨率的限制存在着锯齿走样现象，影响显示效果。
But in the raster graphic display system, scale lines and character will be distorted seriously owe to the limited screen resolution in the case of deflection, which affect the display quality.
本标准适用于以光栅尺为检测件的线位移传感器。
This standard is applied to it is with grating feet detect sensor of displacement of the lines.
一般来说有效面积较大的光栅对应的谱线较强。
In general, the corresponding line of the grating with bigger effective acreage is stronger than others.
本文对光栅投影条纹图像进行预处理，提出采用重心法提取条纹中心线位置，可以获得亚像素级的精度；
The method of barycenter, which can obtain the sub-pixel accuracy to abstract the fringe-centerlines, is presented in this paper after preprocessing the picture using grating projection.
采用铜管和端面镀膜的光纤制作f - P传感器，白光光源经过腔长受温度调制的F - P传感器选频后，用平面光栅和线阵CCD实现光波波长的解调。
After frequency selecting when white light walks through the F-P sensor which cavity modulated by temperature, wavelength demodulating is realized with a plane grating and CCD.
结果表明，当光栅对刻线失配时，且只考虑二阶色散的影响时，初始啁啾导致脉冲宽度小于无初始啁啾脉冲的宽度。
The simulations show that when the grating grooves are unparallel, the original chirp leads to the pulse width smaller only considering GDD.
设计制作了一种基于线阵CCD和USB2.0数据采集系统的高速便携式近红外光栅光谱仪。
A design of portable high-speed near-infrared grating spectrometer based on linear array CCD and USB2.0 data acquisition system was introduced.
在实验中我们通过调节两光栅的有效使用面积，将两谱线的能量比例控制在1∶1左右。
The effective acreages of two gratings are adjusted to keep the energy proportion of two lines under the 1:1.
结果表明，存在刻线失调时，低刻线密度的光栅具有更好的优越性。
The results show that gratings with low groove density are superior to that of high density ones, if the groove misalignment is unavoidable.
进而，本文详细分析了系统的测量精度以及影响精度的主要因素，包括光栅周期、栅线夹角、光栅位置等系统参数的选取；
The accuracy of this method is discussed and also the factors including grating constant, position etc would affect the measurement accuracy are demonstrated.
再者，提出了一种新的使用光栅刻线进行成像系统精度标定的方法。
The third step, a new method of high-precision calibration with grating grooves is presented for the optical imaging system.
外极线约束将可能的候选点限制在直线分布，引入编码光用来确定光栅条纹的级次。
Epipolar constraint was applied to limit candidate-matching point to a line distribution and coding structured light was used to tell the grating index.
用干涉法测量变线距光栅的线密度，给出了测量原理、实验中的光路、数据处理的方法、测量结果。
The line density of varied-line-space gratings have been measured by using interferometry. The principle and geometry are introduced, the methods of data processing and the results are given.
首先，在三维空间内利用光线追迹法，对刻线不平行而光栅面平行时的压缩光栅对进行研究。
Firstly, the system of parallel grating pair, in which the grating grooves is unparallel while the grating surfaces is parallel, has been studied with the tri-dimensional ray-tracing method.
研制了一种采用固定光栅分光，线阵CCD检测器检测的新型芝麻油掺假速测仪，阐述了其工作原理以及软硬件设计，并将其应用于实际样品的测定。
A novel fast analyzer of gingili analyzer, which employs a fix holographic grating and a linear charge coupled device (CCD) array as the light dispersion system and the detector, was developed.
精确地获得光栅条纹中心线的相对偏移量，在三角形法测量物体三维轮廓技术中占有非常重要的地位。
The sub-pixel accuracy in abstracting the fringe-centerlines can be obtained by the method of barycenter after preprocessing the fringe picture using grating projection.
用途：线密度光栅，通过折射光可快速确定针织或机织物每厘米或每英寸内的纱线根数。
USES: linear density grating, through the refraction of light can quickly determined or knitting machine woven per cm or every inch of the yarn number within the root.
目前报道的真延时结构有普通光纤延时线、色散光纤延时线、光纤光栅真延时、自由空间光学真延时、波导技术光学真延时等。
By now, There are many kinds of True Time delay schemes such as fiber delay line, fiber dispersion delay line, fiber grating prisms and ect.
针对X射线透射光栅摄谱仪中的高线密度光栅，研究了采用电子束曝光和X射线曝光技术结合制作高线密度X射线透射光栅的工艺技术。
The manufacture of high-line-density X-ray transmission gratings for X-ray spectroscopy by using electron beam lithography and X-ray lithography was reported.
给出了用于评价光栅刻线弯曲程度的表达式，并推导出了它的积分形式，使计算效率提高了2 ~ 3倍。
The integral expression of the merit function was also derived to improve the calculation efficiency. The calculation result shows that the latter efficiency is 2 to 3 times of the former.
应用推荐