查询词典 collimation

Among this technique, we use a simple, economical and practical collimation method-single lens collimation method to collimate semiconductor laser beam, and use moving objective scanning method to make laser point scan on the lofting plane.

其中用单透镜准直法对有大发散角的半导体激光光束成功地实现了准直，既简单又经济实用；用平移物镜法实现了激光点的扫描。

In plotting scene, the invention connects fiber-optic gyro(1) with full station instrument telescope(3) by adaptor(2), and make optical fibre gyro can follow full station instrument telescope simultaneously do 180 degree turning reel full station instrument cross shaft, respectively on two horizontal positions of east and west direction of gyro axis that differ by 180 degree; each horizontal position process 2 x 2 position gyro data acquisition on full station instrument perpendicular tray that differ by 180 degree; using formula to count out full station instrument collimation axis true azimuth, survey station meridian convergence angle, then can obtain full station instrument collimation axis grid azimuth, realize full station instrument orient.

基于光纤陀螺的全站仪组合定向方法是一种应用于测绘工作的基于光纤陀螺的全站仪组合定向方法，该方法在测绘现场，把光纤陀螺(1)通过连接装置(2)与全站仪望远镜(3)固连，使光纤陀螺(1)可随全站仪望远镜(3)绕全站仪横轴(4)同步做180度转动，分别在陀螺轴东西向相差180度两个水平位置，每个水平位置在全站仪竖盘相差180度的两个竖直位置进行2×2位置陀螺数据采集；利用公式算得全站仪视准轴真方位角、测站子午线收敛角，即可进一步获得全站仪视准轴坐标方位角，实现全站仪定向。

To verify the self-collimation design principle, some experiments such as groundsill stability, self-collimation characteristics of simulant parts and grindi...

磨削试验结果表明，按自准直设计原理研制的新型自准直导轨磨床，其床身导轨具有很好的精度保持性。

Results Bone was clearly viewed in 1mm collimation, small scanning field of volume and 0.2mm bone reconstruction. When the head was scanned in 3mm collimation, high kV and mAs, and standard reconstruction of 1mm interval, bone and brain were clearly viewed perspectively.

结果 用1mm 层厚，小扫描野，0.2mm 骨重建，只能非常清晰地显示骨组织及其病变，用3mm 层厚，适当增加管电压及照射量，一次扫描，再以1mm 间隔，分别以骨和标准算法重建，以骨窗和脑窗显示，能分别清晰显示骨和脑组织及其病变。5mm 层厚扫描只能较清晰显示脑组织及病变。

The unprinted credit card inspection system takes the advantage of the collimation characteristic of laser. We use a beam expander to expand a laser beam broad enough to cover the whole credit card without losing its collimation characteristic.

其信用卡的刮痕检测系统，利用雷射平行光的特性与扩束器的原理，将雷射光束放大到足以涵盖整张待测的信用卡，然后将影像反射在一屏幕上以减少雷射光强度，进而得以清晰撷取刮痕影像。

Firstly, the article introduces the definition of error of lens center in the old and new national standard, and summarizes three present systems that can confirm the lens center. Then we discuss the theory and formula of self-collimation catoptric method. On the basis of self-collimation theory, some apparatuses were designed (including internal-focusing center scope and center error measure instrument etc).

首先介绍了新旧国家标准关于透镜中心误差的定义，归纳和总结了目前物镜装校定中心的三个体系，讨论了光学系统中心误差自准反射法测量原理、公式和测量方法，以及根据自准反射法测量原理而设计开发的定中心仪器——内调焦定心仪、中心偏测量仪等设备。

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。

It's pointed out that in the design of a weapon system, a collimating prism box should be installed behind the electro-optical instrument, if the condition is permitted, to control the electro-reticule generator or other functional elements added in the circuit, and make the weapon system realize the automatic collimation during flighting or driving.

指出在武器系统的设计中，如果条件允许，可在光电仪器的后方设置一个校准棱镜箱(或折反式自准凹面镜组件)，以便在控制电路中加入电十字线跟踪产生器等功能单元，使武器系统实现行进间或飞行中自动校准。标签光电仪器光轴自动校准 electro-optic instrument light axis auto-collimation

An automatic collimation method based on CCD sensor was presented in this article.Using the vernier calipers scale line,the practical collimation line was simulated.

提出了一种基于CCD传感器的精密图像式瞄准方法，利用错位放大原理，用多个基准点同时参与瞄准，采用游标卡尺刻度线来模拟实际应用时的瞄准线。

On the basis of auto collimation principle, a new auto collimation non - touch method was put forward which could measure vehicle platform distortion.

以自准直原理为基础，提出了测量车载平台的变形的激光自准直非接触测量方法，分析了测量系统的工作原理，并根据该原理设计了一套非接触测量系统，采用该系统测量车载平台的变形，利用视频判读系统对CCD图像进行处理和判读，得出的脱靶量数据，进行计算得出车载平台变形量。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。