棱镜

The characteristics and optical path difference of beam reflected by cube-corner prism with dihedral angle errors were researched;the CCP with errors acts as a phase screen comprised 6 optical wedges.

分析了角锥棱镜对光束的相位变换作用，带二面角误差的角锥棱镜可等效于6块光楔的组合，其楔角的大小和方向由二面角误差决定。

One prism diopter represents a 1 cm deviation at 1 m.

一个棱镜度表示光线通过棱镜后在1m 处有1cm 的偏移。

Accordingly, in chapter 3, we put out the idea using prismatic dioptric panel for avoiding the flare of direct light and nonuniform distribution of illumination, which all come from sky lighting in sports building.

并针对厦门体育馆的实际情况，对棱镜折光板的使用技术进行了进一步理论分析和探索，在理论分析的框架内初步确定了合理的使用棱镜折光板的天然采光方案。

With this system, the flexibitity and stability are improved. The calculation about the penetration and distinguishability are presented. The theory analysis is also given in the paper.

对棱镜色散进行了分析，并计算了透射率、分辨率，确定了温度计算式，理论分析表明，采用棱镜分光方案可行，仪器可实现波长的选择，灵活性得以增强，稳定性也得到改善。

The relation of the surface shape error to f-number and relevant spherical radius was achieved according to the reducing analysis model ignoring the local f-number. Two kinds of rhombic prism model are established by ZEMAX. According to the simulation results from ZEMAX, the correctness and limitation of the former methods are proved and analyzed. The results are used to analyze the effect of the surface shape error of the rhombic prism on parallelism of the emergent beam. The assignation plan of the surface shape error for each working surface is presented.

根据忽略局部光圈数的简化分析模型，获得面形误差对应光圈数与相关球面半径的关系，通过几何处理方法，求得一定面形误差对应的球面半径与平面倾角的关系，将斜方棱镜的工作面倾斜一定角度，运用折射定理，将具体面形误差转化为相应平面的倾斜角度，得到出射光相对于理想光轴的倾斜角度及其关系式，并在ZEMAX中建立斜方棱镜的两种模型。

Therefore,a series of experiments on polishing quality of an ultra-smooth surface and polishing time were designed,which was judged according to the size of a scattering facula and luminance under the condition of total reflection.

为此，对所加工的全反射棱镜的超光滑表面抛光不同的时间，并在全反射条件下，根据全反射棱镜背向散射光斑的大小和亮暗的程度来判断所加工超光滑表面加工质量的检测方法，最终给出超光滑表面的抛光质量随抛光时间的变化。

The optimal position of uniform section is calculated, and compared with the normal prism homogenizer. According to the theory that the beam energy refracted by the trapezoid prism is divided into 3 parts then overlapped in the base of the middle high energy, it realizes the use of association with the normal prism in two-dimensional.

实验中根据经梯形棱镜折射后光束能量在中间较强光束的本底基础上进行三分互补叠加的原理，实现了其与普通棱镜均匀器在二维方向上的组合使用；通过调节均匀器与接收屏之间的距离并同时记录每一位置处光束光斑的能量分布改善情况，确定了最佳均匀截面位置并与理论计算相吻合。

In order to save the rare expensive iceland crystal material and realize the 90° beam splitting on the base of high transmissivity and high extinction ratio, using two pieces of ZBaF3 glass and one iceland crystal slice, a new type of 90° beam splitting polarized prism was designed.

为了节省冰洲石晶体材料，并且在保证偏光棱镜高透射比和消光比的情况下实现光路的90°分束，采用在两块ZBaF3玻璃中间胶合冰洲石晶体薄片的三元结构方案，设计了一种新型的90°分束偏光棱镜。

The sample was made of FK-2 glass and iceland crystal,between which either glycerine or organic silica gel could be used for gluing.

超高透偏光棱镜[4-5]便是这方面的典范：文献[4]和文献[5]分别给出了如图1所示的2种棱镜，它们的透射比一般均高于98%，使用得当完全可以达到99%以上。

The experiment shows the extinction ratio of o light is better than 10－5, that of e light is better than 10－3 although it is influenced by the optical glass, and the transmittance of the combination is basically the same as that of the pure Iceland spar prism.

实验测试表明：该棱镜透射的2束平行光的消光比，o光可达10－5；尽管受到光学玻璃的影响，e光的消光比仍优于10－3；透射比均与纯冰洲石晶体材料的棱镜基本相当。

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