棱镜

On the basis of an analysis on the characteristics of image formation of roof Abbe prism and of the structure of double Dove prism, the paper presents a reflecting image rotator consisting of mirrors.

在对立方棱镜的结构特性和阿贝棱镜的成像特性分析的基础上，提出了由反射镜组成的反射式像旋转器，并证明了该反射式像旋转器在平行光路中的像旋特性。

The air gap of polarization prism is influential to the transmissivity of this type of polarizer.

棱镜偏光镜的空气隙对其透射比同样具有影响，对空气隙的厚度进行优化设计对提高棱镜的透射比很具实际意义。

Based on the method of minimum deviation angle, man can obtain the accuracy of measuring refractive index of glass at 3×10-6 with fine apparatus for measuring angle, but the classical princip1e formula quoted by these literatures have principle formula error about 4 ×10 - 4 order which lead to an erroneous measure result.

在这些测量折射率的方法中，最重要的是最小偏向用法和V棱镜法。推导最小偏向角法和V棱镜法的所有文献都沿用经典的原理公式，而这些经典的原理公式没有考虑到空气实际折射率对被测试样折射率的影响。

In this paper we have point out the error of principle formula quoted by all literatures at home and abroad to measure the refractive angle and the method of V-prism, derive from beginning the right formula of measuring refractive index by the method of minimum deviation angle and the method of V-prism.

本文指出了测量光学材料折射率的最小偏向角法和V棱镜法国内外所有文献的原理公式误差，重新推导了最小偏向角法和V棱镜法测量折射率的正确公式。基于最小偏向角法用精密测角仅可以获得±3×10-6的折射率的测量精度，然而，这些文献沿用经典的测量原理公式却具有-4×10－4数量级的原理公式误差，因此导致错误的测量结果。

In this system, the gratings are inscribed by the UV interference fringes of 248 nm derived from a rotatable biprism, where the phase mask is used as a beam splitter, and the biprism is rotated to change the intersection angle of two beams.

在该系统中，光纤光栅是由来自可旋转双棱镜所形成的波长为248 nm的紫外干涉条纹写入的，其中，相位掩模被用作1级衍射光的分束器，通过双棱镜的旋转可改变两写入光束的交叉角。

The projection angle of two B-edges of pentagonal prism has a great effect on the second optical parallelism; however, it cannot be measured during on line processing, which results in low qualification rate.

由于五角棱镜两B棱的投影夹角对第二光学平行差影响倍率较大且加工过程中无法测量该夹角，从而导致棱镜加工合格率较低。

Based on the full-width at half-maximum of optical pulse,one can estimate the radius of incident beams and Fresnel biprism's base angle.

根据所测飞秒脉冲的半高全宽，可估算所需光斑大小和菲涅尔双棱镜底角，为菲涅尔双棱镜的选择提供了理论依据。

The beam splitter comprises a first glass prism element which is joined to a second prism element.

这种分光镜包括将第一个玻璃棱镜的元素渗入到到第二个棱镜中。

Chapter three .introduce the design principal of crystal polarizing prisms and beam splitter prisms, introduce phase retardation plate in short.

第三章介绍了晶体偏光棱镜的及偏光分束棱镜的设计原理，简要介绍了相位延迟器件和退偏器件。

Meanwhile,the relation among Fresnel biprism's base angle,refractive index,and the radius of incident femtosecond pulse beam was obtained.

基于单发频率分辨光学开关法的飞秒脉冲测量系统，理论推导光束经菲涅尔双棱镜分光与聚合产生的时间延迟，得到菲涅尔双棱镜底角、折射率和脉冲光斑半径的关系。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了