光学的

The general condition for athermalzing an optical system when the object surface is at finite or infinite distance is deduced in this paper, and the principle and design method of employing a diffractive optical element to athermalize and achromatize an optical system with normalized T-C chart are expounded.

本文推导了物面位于有限和无限距离时实现光学补偿的通用条件，论述了利用归化T-C图设计热补偿和消色差红外光学系统的原理和设计方法，给出了8-12μm波段内、焦距123mm、相对口径F/2.5在20-60℃温度范围内的折衍混合红外光学系统的设计结果和理论评价结果，所述的设计方法可方便地推广到前视红外系统中。

In order to solve the problem that the paths of angular distribution at focus plane and beam spot at image plane can not be measured at the same time,an advanced measurement of optical transition radiation was proposed.

为了解决理论测量中，光学渡越辐射焦平面的空间角分布与像平面的束剖面光路互相影响，难以同时测量，提出了一种新型的光学渡越辐射光学特性的测量方法。

The decennary increment of AOD averaged from all stations was 0.05. As to mean values, the maximum was in Sichuan Basin of 0.649, and the second maximum in South-Xinjiang Basin of 0.411, while the minimum was in Qinhai-Tibet plateau of 0.125. As to seasonal mean, AOD in spring had the highest value, and then in summer, while the minimum was in winter.

对本文方法反演的50多个台站1961～1990年的0.75μm对流层AOD数据进行统计分析，结果表明：我国AOD分布受地形影响显著，存在四川盆地、南疆盆地高值区和青藏高原低值区，1961～1990年平均AOD四川盆地为0.649，南疆盆地为0.411，青藏高原为0.125.1961～1990年，四川盆地光学厚度增加最显著，平均每十年增加0.16；南疆盆地光学厚度增长相对缓慢，平均每十年增加0.03；青藏高原为光学厚度增加最缓慢的地区，平均每十年增加0.01；全国平均AOD每十年增加0.05。

A novel amplitude sensitive optical heterodyne polarimeter with sourse of a Zeeman laser was setup. The aim was to measure the optical activity of a Quartz Cornu Depolarizer, OCD, and Twisted-Nematic Liquid Crystal, TN-LC, at high accuracy and of aqueous humor in rabbit, in vivo, compared with the test of the concentration of blood sugar, in vitro.

本实验利用极化光共路径光学外差干涉方式架设极化仪；此种光学架构特性在於其结构简单，光学外差共光路特性加上采用参考光得以大幅度的降低雷射以及环境所造成的杂讯，进而得到准确且高灵敏度的旋光性量测结果。

Quartz overcoating protects the optics from the environment and allows cleaning without damage to their refective surface.

石英镀膜的光学器件可以防止环境对光学器件的损害，并且清洁时不破坏光学件的反射率。

In this paper, through the design of the optical system for an infrared automatic dimension sorting machine with high precision, the characteristic, design thought and evaluation method of the optical system, which is a kind of unimaged precision optical equipment applied under workshop conditions, are discussed in detail.

本文通过红外尺寸自动分选仪光学系统的设计，详细地讨论了在车间条件下使用的非成象精密光学装置中光学系统的特点。设计思想及评价方法。

In this experiment setup, a polarized common-path optical heterodyne interferometer is able to measure the twist angle and untwisted phase retardation of TN-LC very precisely.

实验中所使用到的光学架构，为一极化共光路径光学外差干涉仪，其结合了椭圆仪的概念，以透射的方式，将TN-LC之扭转角以及无扭转相位延迟这两个光学参数，精准地量测出来。

The domestic teaching condition about optical engineering is dissertated,teaching modes of many American uni- versifies,which keep ahead in optoelectric science and engineering,are analyzed,such as the University of Arizona,the Univer- sity of Rochester and the University of California,studies the design,the outline and the multimedia courseware of their optical courses.

简要地论述了目前国内光学工程教学现状，分析了在光学工程教学与科研领域中处于一流地位的多所美国大学的教学方式，如亚利桑那大学、罗切斯特大学以及加州大学等，仔细研究了它们关于光学工程学科的课程设置、教学大纲和教学课件。

To protect people and optical sensors from being damaged by lasers optical limiters are in intense demand.

在推动社会发展的同时，这些激光器件对人体及光学感应器都会造成很大的危害，所以迫切需要发展高性能的光学限幅材料来保护人体及光学感应器免受激光危害。

The influencing factor of a reflective rotationally symmetric optical interface is defined.An example is presented to be analyzed.

实例分析结果表明，对于具有宽光谱、大入射角、大视场等特点的反射式旋转对称光学系统，要想提高其光学系统的性能，必须控制光学系统的偏振像差。

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