光栅

As scale graduation pattern is used a steel tape with 200 μm grating pitch.The light from an infrared LED with a small light emitting surface is columnated parallel by a condenser lens and directed through the scanning reticle to the scale.

由红外发光二极管发出的一束光截面很小的红外光通过透镜后形成平行光束，该平行光束通过扫描窗照射到光栅尺上。

Only the change of temperature in the columned vessel causes the wavelength shift of FBG 2, the pressure's influence can be neglected.

提出了一种基于圆柱形容器和活塞结合的双光纤Bragg光栅温度和压力同时区分测量的传感模型。

The groove spacing can vary in arbitrary forms, and the image surface can be chosen as a plane or a conicoid.

通过刻划在非球面基坯上的凹面光栅验证了光线追迹方法的可靠性。

Fiber Bragg Grating sensors can work in the area of strong electromagnetic field, high temperature, corruptive and explosive bad conditions, therefore have more applications than other sensors.

光纤光栅传感器可以工作在强电磁场、高温有腐蚀性的以及有爆炸危险性的恶劣环境中，因而比其它传感器有更广阔的应用范围。

By the data in the images from the two frequency grating projector , the absolute phase at each pixel is then unwrapped by comparing the two wrapped phases and it is suit for the great craggedness of the measurement object.

在光学投影栅线法测量物体三维轮廓理论的基础上，本文提出了双频投影栅线法物体轮廓测量技术，通过两种不同频率的光栅投影图，能够直接得到包含物体高度信息的绝对相位值，能够实现具有陡峭边沿物体的测量，实验结果表明，利用该方法能够显著提高物体轮廓测量精度。

However, no method of assessing roundness and cylindricity, which not only meets the definitions of the national standards but also are the rapid and concision properties possessed, has been found.

本文着眼于数字分度头的虚拟仪器化设计，以及轴类零件的形状误差测量，结合对传统数字分度头的改造项目，提出了一种虚拟光栅数显系统的原理。

Based on the scheme, we have fabricated successfully many phase elements in LiNbO3: Fe, such as photorefractive phase mask, phasing zone plate, lens array, Daman grating and array waveguides, ring and elliptic waveguides and so on.

按照此方案，我们在LiNbO3：Fe晶体中成功制作了光折变位相图、相位型波带片、透镜阵列、达曼光栅及阵列波导、圆形及椭圆形波导等位相元件。

X-rays are used because they have the same wavelength as the atomic separations so the crystal acts as a molecular diffraction grating to diffract a beam of X-rays, producing a diffraction pattern that can be captured and analyzed.

之所以使用X射线是因为其波长和原子裂解时的波长一样，所以晶体作为分子衍射光栅衍射X射线，产生一种可以获取并分析的衍射图形。

X-rays are used because they have the same wavelength as the atomic separatio so the crystal acts as a molecular diffraction grating to diffract a beam of X-rays, producing a diffraction pattern that can be captured and analyzed.

之所以使用X射线是因为其波长和原子裂解时的波长一样，所以晶体作为分子衍射光栅衍射X射线，产生一种可以获取并分析的衍射图形。

Limitation of scalar method to the analysis and design of diffractive optics elements.

光栅平动式光调制器的光学特性分析和仿真。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。