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Radius variation of image beam waist due to spherical aberration, which varies with the position of objective beam waist, and optical system focus is analyzed with the form of curve. At last,a design example of optical system used for laser plume attenuation testing system is given to illustrate the effect of spherical aberration on the image beam waist.

本文还提出了在设计过程中存在的球差对激光束像方束腰的影响，对其进行了理论分析，并给出了数学模型，总结出高斯光束的像方束腰半径与物方束腰位置、光学系统焦距之间的关系，并对本光学系统的设计进行了验算。

The design of optical window on a spherical shell in electro-optical systems is introduced.

介绍光电系统中球形壳体上光学窗口的设计方法。

Classical optical lever was improved with a carved vernier spider line in an eyepiece of the telescope to increase the precision of an optical lever and reduce the error.

为了提高光杠杆的精度，减小实验误差，对原光杠杆进行了改进，在望远镜的目镜中刻划了游标叉丝。

The company has a number of highly qualified marketing personnel and technical engineers, as well as Optical Fiber Fusion Splicer, OTDR and other optical communication equipment and a wealth of engineering experience.

公司拥有一批高素质的营销人员和技术工程师，以及拥有光纤熔接机、OTDR等光通信仪器设备和丰富的工程经验。

As a key optical network devices, optical power splitter is therefore of great significance.

作为光网络的关键器件，光功率分配器的研究因此具有重要的意义。

In the optical-fiber channel, amplified spontaneous emission noise in the optical amplifier is the major source of noise.

在远程光纤信道中，放大器自发辐射噪声是主要噪声源。

An autonomous optical navigation scheme for cruise phase is presented in this paper, in which the relative position for probes is based on the star light and body edge data that is measured by star sensor and optical navigation camera respectively.

提出了一种用于探测器在巡航段的自主光学导航方案，该方案利用光学导航相机以及星敏感器，通过测量星光信息以及天体边缘的信息，得出了探测器的相对位置。

The stable and reliable operation voltage of the probe can be given by the following methods:(1) 20% light coupling efficiency is obtained by direct coupling of LD-optical fiber.(2) The light power is transmitted by multi-model optical fiber.(3) The largest photo-electric conversion efficiency is achieved by selecting the transformer regulation of step-up transformer.(4) The stable light intensity is achieved by using LD light feedback of driving circuit and refrigeration.

通过下述方法可提供稳定、可靠的探头工作电压：LD—光纤的直接耦合方式，可实现20％左右的光耦合效率；采用多模光纤传输功率；选择升压变压器最佳变比提高光电转换效率；采取LD驱动电路光反馈以及致冷措施使其发光幅值稳定。

The optical activity of a stereoisomer is expressed quantitatively by its optical rotation, The specific rotation 〖α〗D25C of an optically active compound is defined thus

立体异构体的光学活性是以旋光度定量表示的，光学活性物质的比旋光度〖α〗D25C是这样定义的

The integrated optical networks based on optical swapping technology will be the new development direction of communication networks in future.

以光交换技术为基础的全光网络将是未来的新型通信网络的发展方向。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。