查询词典 optical

A method of the optical image encryption based on the frequency splitting domain and Fresnel domain is proposed, after the analysis of the fractional Fourier transform and Fresnel transform, by synthesizing the advantages of multi keys and lensless feature of the fractional Fourier transform and Fresnel transform in the optical image encryption system.

结合分数傅里叶变换及菲涅耳变换，在光学图像加密系统中分别具有多密钥性和无透镜性的优点，提出了基于分频域和菲涅耳域的光学图像加密方法。

In this thesis, several problems of time-dependent systems in various branches of physics are investigated by making use of the generalized invariant theory and the invariant-related unitary transformation formulation. The problems are given as follows:(1) Spin model and geometric phase factor in the fiber We investigate the fiber experiment performed by Chiao-Tomita and the Chiao-Wu theory concerning the geometric phase factor in the optical fiber, and then show that the investigation of the propagation of photons inside the noncoplanar optical fiber can be regarded as that of a second-quantization spin model.

本论文用推广的不变量理论和与不变量有关的幺正变换方法研究了一些物理分支中的几个含时系统问题：(1)自旋模型与光纤中光子几何相因子问题重新考察了Chiao-Tomita光纤实验和Chiao-Wu关于光纤中光子几何相因子的理论，证明了在非共面弯曲光纤中传播的光子运动问题实际上可以化为二次量子化含时自旋模型研究。

The presence of shear force in a n ear-field scanning optical microscopy can be detected by optical and nonoptical means.

近场扫描光学显微镜中，切向力的检测有两种方法：光学检测法和非光学检测法。

Studies show that RSA of organic molecules is strictly an electronic effect, which results in rapidly optical response and large nonresonant third-order optical susceptibility.

研究了基于反饱和吸收的有机材料的光学限幅性，研究结果表明不同的有机材料的反饱和吸收过程，直接反映了该材料光限幅的能力。

Second, all the compounds generate large nonresonant optical nonlinearities over a wide frequency zone, which can be used for a frequency conversion optical material.

此类体系在较大的宽频区表现出较小的色散行为，它们可以用于频率转换材料。

Based on the propagation and transformation law of Wigner distribution function through a general axially nonsymmetrical optical system,investigated is the transform relationship of WDF between the input and the output planes of a pair of cylindrical lenses system which is used widely in optical signal processing .

基于维格纳分布函数在一般非轴对称系统的传播和变换规律，讨论了在光学信息处理系统中常用的双柱透镜系统输入和输出面WDF之间的变换关系，在直角坐标中给出了联系该系统相空间坐标的维格纳分布函数的坐标变换关系式和等价的矩阵表示。

This paper presents a temperature testing technique based on fiber-optic transmission and the principle of optical fiber, the coupling between the optical fiber and photoelectrical probe, linear solution of temperature sensitive components.

提出了一种基于光纤传输的温度测试技术，重点介绍了光纤测温原理、光纤耦合和温敏元件的线性处理技术，并分析了表面发射方式的光纤耦合传输特性。

At the isoelectric point, pH=3.07, the flocculation effectsFentonof iron polysulfate , aluminium polychloride and chitosan chloride are compared . It is illustrated that the optical flocculation reagent is aluminium polychloride and its optical dosage is 0.30g per 50mL effluent.

在等电点pH=3.07处，对聚合硫酸铁、聚合氯化铝、壳聚糖盐酸盐的絮凝效果进行比较，确定了最佳絮凝剂为聚合氯化铝，最佳用量为每50mL处理液加入0.30g聚合氯化铝。

The novel optical switch scheme has very important meaning for the research and practicalization of 2D MEMS optical switch.

通过本文的研究，采用镍铬金材料制作的金属微镜单元具有良好的光学性能和机械性能，能够实现光开关功能，对2D MEMS的研究及其实用化，具有重要意义。

The ptical adjointing effect calibration method comprises: parameter initialization, precorrection, sampling an initial frequency, interpolating to calculate light intensity and dividing small lines, in an optical adjointing effect calibration cycle, using a dynamic adjusting algorism to adjust the division result to attain the result of the optical adjointing effect calibration.

包括参数初始化，预校正及初始频率采样，插值计算光强并切分出小线段，并在光学临近效应校正循环中利用动态调整算法对切分结果进行调整，从而取得光学临近效应校正的结果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐