查询词典 optical lens

At present, major producers such as digital radio and digital camera lens, scanner lens and optical components.

目前主要生产数码射像和数码照相机镜头，扫描仪镜头及光学元件。

An optical element such as a rear projection screen for an image display device comprises at least two substantially rigid sheet members each having a first major surface and a second major surface providing a plane of incidence and a plane of emergence, respectively, through which light is transmitted sequentially. A first sheet member comprises a Fresnel lens, and a second sheet member comprises a lenticular lens array on each of the major surfaces thereof.

一种光学元件，例如用于图象显示装置的背投式屏幕（1），包括至少两个基本为刚性各具第一主表面（21；31）和第二主表面（22，32）的板部件（2；3），分别提供顺序穿过光线（10）的入射面和出射面，第一板部件（2）和第二板部件（3）在其各个主表面（31，32）上分别包含一个菲涅耳透镜（24）和一个双凸透镜阵列33，35。

A new type fiber coupling system is designed,which consists of four parts:large aperture lens,1/4 pitch grin lens,taper fiber and step optical fiber with spherical end surface.

设计了一种新型的耦合系统，该耦合系统由大口径聚焦透镜、1/4节距自聚焦透镜、锥形光纤和球端光纤四部分组成。

A tungsten halogen lamp and a projecting lens are used to generate the collimated light. A CCD detector is used as light spot position sensor to measure the changes of the spot position at the rear focal plane of the imaging lens, and the optical angular deviation can be derived.

采用钨灯和投射透镜产生准直白光，用CCD探测器作为光斑位置传感器在成像透镜的后焦面测量光斑位置的变化，从而可得光学角偏差。

And this paper also shows the structure and parameters of the optical system. The Xenon light of super high voltage is used as interferential source. The position of it is on the focus of the reflector of ellipsoid surface. After reflecting, its lights form a collective point . This point and objective focus of collimation lens are superposition. Though the collimation lens, the beam of light become parallel lights. Then though the Coude Reflector and radiation system of special prism, the lights become a beam of light with 3 ° emanative angle.

该光学系统选用超高压氙灯作光源，使其位于椭球面反射镜的一个焦点上，发出的光线经椭球面反射后所形成的汇聚点与准直负透镜组的物方焦点重合，光束经准直系统后变为平行光束，此平行光束再经库德反射镜和特殊发散棱镜系统，形成具有3°发散角的发散光束，用来干扰敌方设备。

The fringes region varies in measuring the lens focal length using Moire deflectometer, when different measured lens and others optical parameters are used.

当用莫尔偏折法测量透镜焦距时，条纹区域随着被测透镜和系统光学参数的不同而变化。

The lens also has a second lens group moveably positioned along the optical axis.

该透镜还具有沿光轴可移动放置的第二透镜组。

We use GRIN lens as collimating or focusing lens for transmission gas cell ,and a method that using cascaded GRINLens couple to increase the optical path length is presented. Using this method ,the detection sensitivity of the gas cell has been greatly increased.

利用自聚焦透镜作为光纤准直透镜和聚焦透镜，应用于透射型气室，并提出了在透射式气室中将多对自聚焦透镜组串联用以增加吸收光程的方法，用该方法可以明显提高气室的检测灵敏度。

To enlarge the measurement range of a potential vision meter and improve its measurement accuracy for patients with high error of refraction, the imaging characteristics of its optical system were investigated. The visual magnification equation of the system was derived. The influence of the focal length variation of the collimating lens and the imaging lens on the magnification was analyzed respectively.

针对潜在视功能检测仪临床使用中量程有限和对高度屈光不正患者检测结果有一定误差的现象，研究了其光学系统成像特性，建立了系统对视力板成像的视觉放大率公式，分析了准直透镜、成像透镜焦距变化对视觉放大率的影响。

The paper design start point with a four-group the paraxial lens set with two groups lens of movements, among the first order and three order aberration is ignored. The imprimis acquisition optical zoom focal length start the structure.

本文的初始的设计以四群组成二群移动的理想透镜组，其中不考虑一阶及三阶象差，首先取得光学变焦的初始结构。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。