光学的

Based on the normative fractional Fourier transform and the concept of the optical transfer function, using the linear system theory, the mathematic expressions of fractional transfer function in Fresnel diffraction system and Fraunhofer diffraction system are given respectively.

基于规范光学分数傅里叶变换，从光学传递函数概念出发，根据菲涅耳衍射、夫琅和费衍射定义，应用线性系统理论，分别给出了菲涅耳与夫琅和费衍射系统在规范分数傅里叶变换下的光学传递函数数学表达式。

Optical pickup is one of the kernels of optical storage industry. It is used for all kinds of optical storage systems widely. It consists of optical collimator system, optical focusing system, servo error signal generating system and the enforce element of servo system .

中文题名DVD光学读取头关键技术研究副题名外文题名 On key technology of DVD pickup 论文作者王继平导师阮玉学科专业物理电子学研究领域\研究方向学位级别博士学位授予单位华中科技大学学位授予日期2003 论文页码总数173页关键词DVD 光学读取头光盘光存储馆藏号BSLW /2003 /TQ597 /2 光学读取头是光存储产业的核心器件，它广泛应用于各类光存储设备中。

At present, optical precision instruments, including high-precision digital Autocollimator, goniometer, automatic optical focal length of the device, eccentric parallel devices and fluorescent tubes, etc., while providing for the optical, infrared and mechanical measurement of the field of customized products and programs, through international ISO9001 quality certification system.

目前光学精密仪器包括高精度数字式自准直仪、测角仪、全自动光学焦距仪、偏心仪及平行光管等，同时提供针对光学、红外及机械测量领域的定制产品和方案，通过国际ISO9001质量认证体系。

The diffractive optical elements,also called holographical optical elements, are ones based on the theroy of diffraction and non_traditional elements.

衍射光学元件又称为全息光学元件，是建立在衍射原理上的一种非传统光学元件。

Directly demonstrate the substance superimposed image and prove the plane mirror formation of image.

光学和光学仪器。光学系统质量评估。评定彩色相差引起的成像质量下降因素

Topics covered include, the properties of light and its interaction with mineral grains: reflection, refraction, polarisation, interference phenomena, extinction, colour and pleochroism. Refractometry inclusive isotropic, uniaxial and biaxial optics and the interpretation of interference figures. Transmitted light petrography in the identification and familiarisation with major rock forming minerals in grain mounts and thin section.

讲稿内容涉及到光学属性分析与矿物交叉面相互反应，具体内容有反射、折射、偏振、光干涉现象（包括等方性、单轴、二轴光学及干涉数据解释）、岩石记述学、矿物的光学属性鉴定等方面。

This project was established based on the first cooperative development of optical in situ real time detecting technique probing the atomic scale layer-by-layer epitaxy growth of oxide film. Over the last three years, we have given full play to the advantages and characteristics of both sides and have finished the assumptions and plans of this subject satisfactorily. 1. In Institute of Physics, we set up advanced oblique-incidence reflectivity difference equipment and wrote one data acquisition procedure that made the simultaneous detection of optical signal and RHEED signal into reality. 2. The first observation of sustained oscillations over hundreds of monolayers in both real and imaginary signals during the epitaxy growth of SrNb0.1Ti0.9O3 on SrTiO3 substrate in LMBE testifies that oblique-incidence is an excellent method to detect and monitor film epitaxy growth real time. 3. For the first time, we verify that oblique-incidence reflectivity difference method can be used to monitor the layer-by-layer growth mode during continuous growth through the correspondence between optical signals to atomic or molecular step edge density on the growth surface. 4. Phenomenological analysis shows that optical signals comprise three parts, the first is proportional to the average thickness of the film and depends on the bulk phase dielectric response; the second is proportional to the coverage of terraces and depends on the dielectric response of atoms or unit cells in the terrace; the third is proportional to the coverage of step edges and depends on the effective dielectric response of atoms or unit cells at step edges. This makes oblique-incident reflectivity difference technique a quantitative macroscopic method to monitor film growth.

中文摘要：本课题是在合作首次发展了氧化物薄膜原子尺度层状外延生长光学原位实时探测方法的基础上立项的，三年来，我们充分发挥双方的优势和特点，圆满完成了课题的设想和计划。1、在物理所建立了一套先进的光反射差法装置，编写了计算机系统的数据采集程序，实现了两路光学信号和RHEED数据的同步采集和显示。2、用激光分子束外延在SrTiO3基底上生长SrNb0.1Ti0.9O3薄膜，首次观测到连续外延几百个原胞层，周期振荡的光反射差实部和虚部信号，证明了光反射差法是一种能原位实时探测与监控薄膜层状外延生长的好方法。3、首次验证了通过对生长表面原子或分子台阶密度的响应，光反射差法可用于原位实时监测在连续生长条件下薄膜的层式生长模式。4、通过唯象理论的研究，证明光反射差信号由三项组成，第一项只与薄膜的平均厚度和宏观光学电介质常数有关；第二项与分子台阶面覆盖度和台阶面上分子层的光学电介质常数有关；第三项与台阶边缘的覆盖度成正比，并和在台阶边缘的分子的有效光学介电常数有关。

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。

Based on the development of key techniques,such as fabrication of optical fiber probe and probe-sample distance nonoptical control, ete,we have built a scanning shear force near-field optical microscope ,which can be combined with an inverted optical microscope.

在发展光纤探针制备和探针与样品近场间距非光学控制等关键技术基础上，我们研制成能与倒置光学显微镜联合使用的扫描切变力/近场光学显微镜，并具有反射和透射等工作模式以及能在溶液环境中工作。

TFT-LCD is a very important spatial light modulator in optical information processing. The matrix of TFT -LCD is constructed with a metal mask that covers the inter - pixel spaces, obscuring the thin fihn transistors and preventing light leakage through the unswitched parts of the panel.

TFI'一LCD(信息光学中又称LCTv)作为空间光调制器，具有光学调制特性好、空间分辨率高、功耗低、体积小、计算机接口等优点，在信息光学研究中是非常重要的系统输入器件。

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