折射率

Chapter 3 is on the study of retroreflective films. Firstly, every kinds of retroreflective films are introduced systematically.

利用CO〓激光作为加热热源，制作成功了具有高折射率、高熔化温度和大粒径的玻璃微珠。

Two construction methods for fewer views from limited range—ART and SART are studied, and simulated a physical fields views whose variation of deflection is equal to double-Gauss function, and then reconstructed it, and still analyzed the accuracy of the reconstruction methods.After study and analysis on the theory of ART and SART, and after analysis the properties resulted from their theory root cause, A modified simultaneous algebraic reconstruction method is presented, which is based on ART, this method takes into account both the pixel itself and the pixels close by it which are crossed by the same ray.

论文研究了两种有限投影方向的非轴对称场的CT重建算法——代数重建法和联合代数重建法，并用VC++程序模拟实现了折射率分布为双高斯函数的场的正向投影及重建过程，并对所用算法的重建精度进行了分析。

The liquid crystal display has a chiral ferroelectric smectic liquid crystal between two transparent plates with electrodes for generating an electric field, and polarisers in front of and behind the liquid crystal, the ratio d/p of the thickness d of the liquid crystal layer to the pitch p of the helical twisting being larger than 5, the smectic tilt angle theta 0 being between 22.5 DEG and 50 DEG , and the product d.

一种液晶显示单元，它具有：一种在两块透明平板之间的手性铁电近晶液晶；用于产生电场的电极；在液晶前后各有一偏振片，液晶层的厚度d与螺距扭曲的螺距高度p的比值d／p大于5，近晶倾角θ 0 为22.5～50°，厚度d、倾角θ 0 的平方、双折射率△n和光波长λ倒数的乘积dθ 2 0 △n1/λ大于0.45μm。

A novel refractive index sensor based on one-dimensional photonic crystal non-complete surface defect is introduced and the principle and the method of the sensor are discussed. The experiment system which is used to detect the refractive index is constructed to get high resolution and high Q-value. The sensor is verified by detecting the dimethyl sulphone solution.

本文介绍了一种新型一维光子晶体非完整表面缺陷模式折射率传感器的原理及方法，并构建了高分辨率、高Q值传感器探测实验系统，利用二甲基砜溶液验证了这种传感器。

When using different refractive index of the glue, the light transmissivity is different.

Rochon棱镜胶合剂的折射率不同时，出射o、e光的光强透射比会不同。

Seven polyimides were synthesized and their films were uniaxially stretched to observe the variation in their in-plane birefringence. The creep method of DMA was used instead in stretching the PI films. The preload force and isothermal temperature were the two controlled factors that were chosen on the basis of the lowest stretchable force and lowest temperature for each PI structure. The elongation ratio of a PI film was then decided by the stretching time.

在此是以DMA 的另一种试片拉伸方式-Creep模式，来取代之前的Stress Relaxation模式对PI薄膜试片进行拉伸实验，Creep模式是以最低的拉伸力量及最低的拉伸温度的前提下，选择Pre-load Force与Isothermal Temperature这二项为拉伸控制因素，在此状态下的PI薄膜拉伸比是取决於其拉伸的时间，此种拉伸模式将可得到较高的拉伸比，而高的拉伸比是获取较高薄膜双折射率的必要条件。

An optically clear thermoplastic resin composition consisting essentially of: structural units derived at least one substituted or unsubstituted polycarbonate, at least greater than 30 weight percent of a substituted or unsubstituted polyester, a modified polycarbonate, an impact modifier having a refractive index in the range between about 1.51 and about 1.56 and an additive is disclosed.

公开了一种光学透明热塑性树脂组合物，该组合物基本上由以下组成：结构单元衍生的至少一种取代的或未取代的聚碳酸酯，至少大于30wt％的取代的或未取代的聚酯，改性的聚碳酸酯，折射率范围为约1.51～约1.56的抗冲改性剂和添加剂。

In addition, the analytic expression of peak value of PER associated with the length of grating, the modulation depth of refractive index and the Verdet constant is also given, with convenient application to the performance analysis of magnetic field measurement.

文章还给出了峰值消光比与光栅长度、折射率调制深度和费尔德常数之间关系的解析式，可方便地用于分析磁场的测量性能。

The dielectric function and complex refractive, reflectivity, and absorption coefficients of anatase TiO2 dominated by electron interband transitions are analyzed in terms of the precisely calculated band structure and density of states.

利用精确计算的能带结构和态密度分析了电子带间跃迁占主导地位的锐钛矿相TiO2的介电函数、复折射率、反射率和吸收系数，理论计算得到的结果与实验测量结果基本一致。

By this solid-contacting configuration, it was found that the spectra of dielectric function measured at the metal-substrate interface do change with the refractive index and differ from those measured at the metal-air interface in both the Drude and interband transition regions.

采用不同折射率的梯形棱镜作衬底，室温下用热蒸发或电子束蒸发的方法，在棱镜底面生长一系列金膜和银膜，使用椭圆偏振光谱方法分别测量了金属与空气界面及金属与衬底界面的介电函数谱。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。