collimator

A new collimator is invented which is consisted of the graded refractive index(GRIN) rod microarrays and diaphragm microarrays.

实验结果表明， 选择合适的参数， 可获得发散角小于±１０°的近准直光， 该种准直器可满足扩展液晶显示器（ＬＣＤ）视角对准直背光源的需求。

A kind of off-axis parabolic collimator acted as infrared target source was introduced.

论述了一种用于为某可靠性测试设备提供红外模拟目标源的离轴抛物面准直光管系统的结构选择。

A formula for the distribution of the collimated beam s spatial frequency is established and the spatial frequency distribution of the incident light is obtained.

建立了准直光束的理论计算公式,给出了采用数值方法精确计算准直光束的主要步骤和计算中应注意的问题,计算了空间频率分布。

The methods for measuring lens focal length and spherical curvature radius at presentare summarized, and the principle of the collimated beam compensation method for measuring lens focal length and spherical curvature radius is introduced and it is indicated that the key of this metbod ischeck on the collimation of compensation beam.

概述目前透镜焦距及球面曲率半径的测量方法，介绍透镜焦距及球面曲率半径的准直光束补偿测量法的原理，指出该方法的关键是对补偿光束准直性的检测。

The simulation and experiment results show that the divergence angle of the collimated beam is less than 1.

运用波前重组的光波均匀方法,将 LED 光源发光整形为光强均匀的光斑;通过控制出射光线的高度,设计并优化准直光路。