准直必须能够在现场进行校核。
激光准直仪拓宽了应用为范围。
准直仪照明仍然保持开启。
图像处理是光路自动准直的关键技术之一。
Image processing is one of the key techniques in laser beam automatic alignment.
多达几十种的准直器和滤光片的自由组合。
There are tens of combinations between the collimators and the filters.
文中还给出了几种准直和聚焦的光学系统。
目的：研究多叶准直器在临床的应用价值。
Purpose to study the clinical applying value of multi-leaf collimator.
目的：用系统均匀性指标检测准直器的质量。
Purpose: propose to measure the collimator's quality with system uniformity parameter.
当然可以利用外部准直法来提高计数器的方向性。
Counters can, of course, be made highly directional by the use of external collimation.
详细叙述了用轴准直器测定和修正这种影响的方法；
The method is recounted for determining and correcting the error with the axis-collimator.
研究成果表明了激光准直扩束和扩展的必要性和可行性。
The research and results have shown the feasibility and necessity of laser collimation and expanding.
开发了便携式激光准直仪及直线度误差测量、评定软件。
The portable laser collimator and the straightness measuring and evaluating software are developed.
在该系统中，我们采用三片式准直镜来对光束进行准直。
In this OPU, we use a triplet lens to collimate the laser beam.
准直、耦合技术是MOEMS光开关阵列的一项关键技术。
Collimate and coupling technique is the key technology of MOEMS optical array.
阵列激光二极管光束的高效准直整形是传统光学技术的难题。
Collimation orthopedics of the array laser diode light beam is a traditional optical technical problem.
并用一个反向散射修正因子对次级准直器的反向散射进行修正。
And a monitor backscatter factor is used to correct the effect of backscatter from secondary collimators.
本文提出一种简便而实用的激光横向位错干涉判断激光准直的方法。
In this paper we advance a simple and practical method judging laser collimation using laser lateral shearing interferometry.
设计单波长准直光透射实验并通过实验测量组织模拟样品的总衰减系数；
Single wavelength collimation transmittance experiment is designed and conducted, with total effective attenuation coefficient of tissue phantoms being obtained.
该系统包括PSD，激光垂直准直器，数据采集箱和应用软件四个部分。
The system consists of PSD, laser vertical collimator, data sampling box and application software.
上面定义的漫射密度意味著输入光先经过准直，然后收集所有的输出量。
The above definition of diffuse density implies that the input light is collimated and that all the output flux is collected.
最后，旨在实现了由简单的积分使用反射式准直激光视力和整体目标模块。
Finally, simplicity of aiming was achieved by use of integral reflex type collimating sight and integral laser aiming module.
在激光准直技术中，减少光束漂移、降低大气扰动对光束的影响尤为重要。
In laser collimating system, it is especially important to reduce the influence of air disturb.
光束自动准直系统应用于大型高功率激光装置的多路光束的精密准直调整。
The laser beams automatic alignment system is applied to adjust multiple beam paths accurately in the high power laser facilities.
基于像传递的激光自动准直技术是提高准直准确度、增加稳定性的好方法。
The image transfer based automatic laser alignment technique is a good way for improving the alignment accuracy and increasing alignment stability.
对于放射外科来说，塑造治疗射野最简单的方法是采用单一、固定的准直器。
The simplest approach to radiosurgery is to use a single, fixed collimator to shape the treatment field.
阐述其工作原理和结构形式，包括PGP、准直物镜和成像物镜的设计要求。
Its work principle and structure is presented. It consists of a PGP, a front collimated and a rear focusing lens.
尺寸越小的准直器特别有助于针对病灶产生有陡峭剂量梯度和适形的照射剂量。
Smaller collimators are particularly good at generating steep dose gradients and conforming dose to the target.
采用光线矢量法设计了两个相互垂直的椭圆截面柱透镜组来准直半导体激光束。
By using the light ray vector method, the elliptic-section cylinder lenses have been designed to collimate the semiconductor laser beam.
以明确的物理意义详细分析和讨论聚焦、扩束准直、扫描显示等光学系统的设计。
Design of optical system for the focusing, the collimating and the scanning is analysed and is discussed with precise physical meaning.
以明确的物理意义详细分析和讨论聚焦、扩束准直、扫描显示等光学系统的设计。
Design of optical system for the focusing, the collimating and the scanning is analysed and is discussed with precise physical meaning.
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