查询词典 Lens

First,the planar waveguide models for Rotman lens and its feed lines which incorporate the dispersion effect with frequencies are set up.Then the aperture electric fields at lens ports are expanded by appropriate waveguide mode functions and substituted into the contour integral equation.The multimode scattering matrix of the lens can be acquired by solving the contour integral equation by using Galerkin method.

首先建立了考虑色散效应的透镜的等效平板波导模型，然后选择适当的波导模式函数展开透镜端口上的场，并利用Galerkin法求解其边缘上电场满足的轮廓积分方程即可得到透镜的多模式散射参数。

A beam throgh convex lens will be converged, so the lens is also called a converging or positive lens.

凸透镜具有会聚光线的作用，所以也叫"会聚透镜"或"正透镜"。

The lens has a section in a plane normal to a longitudinal axis of the lens, in which a surface of the lens facing the light source has a curved line that expands or is convexly facing toward the light source.

所述透镜在与透镜的纵向方向垂直的平面上具有截面，在该截面中，透镜的面向线光源的表面具有朝向光源扩张的曲线。

During a postoperative healing period following surgery, the anterior capsular remnant fuses to the posterior capsule of the bag by fibrosis (30) about haptics (36) on the implanted lens while the ciliary muscle is maintained in its relaxed state by a cycloplegic to prevent dislocation of the lens, and the lens is deflected rearwardly by the fibrosing anterior capsular remnant to a distant vision position against the elastic posterior capsule (24) of the bag in which the posterior capsule is stretched rearwardly.

在手术后的治愈期间，当睫状肌被睫状肌麻痹剂维持在其舒张状态时，植入晶状体上的触觉连接件（36）周围的纤维化（30）使前囊残边熔结到囊袋的后囊上，以防止晶状体错位。晶状体在纤维化的前囊残边作用下克服囊袋弹性后囊（24）而向后偏移到一个远视觉位置，在该位置上，后囊被向后拉伸。

Because COTY colour picture tubes adopt XL lens as main lens, three electron beams are focused by a larger common lens in addition to three circle aperture lenses.

RCA公司在八十年代研制出COTY彩色显象管，它采用XL透镜做主聚焦透镜，其中除了三个单独的小透镜起聚焦作用外，三个电子束还受到一个公用大透镜的作用，因此透镜像差得以降低。

Results The axial length of eyeball was gradually decreased during the adult years of life accompanying with the increases of corneal and lens refractive powers and a decrease of anterior chamber depth fur maintaining a emmetropia status, and the steepness and thickness of lens, shallowness of anterior chamber contributed to emmetropia by decreasing the refractive index of lens.

结果 随着年龄增大，眼轴逐渐变短，但同时伴有角膜、晶状体屈光力的增大及前房深度的变浅以维持正视状态，晶状体的增厚、曲率的变大及前房的变浅可能通过屈光指数的减小同样维持了正视状态。

A R-C system with foci of 2 m and f-number F/4 was taken for an example, the principles of stray light eliminating and evalutiong in reflective optical system was put forward. Lens hood in the main mirror, lens hood outside and window shade, lens hood in the secondly mirror were designed by CAD modeling.

以焦距为2 m，相对孔径为1/4的R-C系统为例，介绍了利用计算机仿真技术进行消杂散光设计和评价的原理，结合CAD建模进行了主镜内遮光罩、外遮光筒、次镜百叶窗式遮光罩的设计。

This thesis discusstion these contents, optics of lens characteristic, Fourier transform lens's performance index,design characteristic, structure type, etc. especially, do a lot work in quadruplet full symmetrical double far distance fourer transform lens aspect.

论文对光学透镜的傅里叶变换特性，傅里叶变换透镜的性能指标、设计特点、结构类型等作了研究，尤其是在四组元全对称双远距傅里叶变换透镜方面做了大量的工作。

The solid immersion lens for near field optical storage has one negative refraction medium layer coated to the lower surface of traditional solid immersion lens to re-focus laser beam focused onto the lower surface of the solid immersion lens onto the surface of CD.

本发明公开了一种用于近场光存储的固体浸没透镜，在传统固体浸没透镜的下表面涂覆上一负折射介质层，该负折射介质层将聚焦于固体浸没透镜下表面的激光重新聚焦于碟片的表面。

So far, none of star sensor prototypes has been found equipped with lens hood in native missiles. For improving engineering practicability of star sensor and reducing noise of space scattering lights, designing and selecting of lens hood parameters of star sensor and engineering amelioration of prototype were brought forward, based on design principles and correlative data of foreign missile, which regard lens hood of space star sensor.

迄今为止，国内研制的导弹用星敏感器工程样机未见使用遮光罩的先例，为了提高星敏感器的工程实用性，减少空间杂散光引入的噪声，借鉴空间星敏感器遮光罩的设计原理和国外弹用星敏感器遮光罩的相关资料，提出星敏感器遮光罩的参数设计选择方案，对原理样机进行工程化改进。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。