孔径角

分析表明，振幅误差主要取决于孔径角θ，其他参数如频率f、速度υ、法线距离z等只是有限地影响相位误差。

The analysis showed that the errors of amplitude mainly depend on aperture angle θ, the other parameters such as frequency f , velocity υ and normal distance z only have limited influence on errors of phase .

用定性和定量的方法，分析影响光纤倒像器透过率的若干因素，给出透过率随径向位置和孔径角的变化关系。提出在制造、应用和测试这种光学元件时应该注意的有关问题。

The effect of some factors on the transmissivity of fiber optic image inverter is analyzed , and the relation of the transmissivity between radial position and aperture angle is given .

在飞利浦棱镜系统中，当一定大小孔径角的照明光束斜入射到分色合色薄膜后，S偏振分量和P偏振分量存在一定的相位差，使得线偏振光变成椭圆偏振光。

When illuminating light with a large numerical aperture incident on dichroic thin films at a non-normal angle in Philips prism system , linear polarized light is turned into elliptical polarized light because of the difference of the phase shift between s - and p-polarization component .

在偏移噪音允许的前提下，偏移处理应尽量选用45°的大孔径角，至少应选择30°的孔径角。

Consequently , in consideration of migration noise , large aperture of 45 °, or at least 30 ° was chosen .

结果表明，影响偏移成像水平分辨率的主要参数是介质速度、地震子波主频和偏移处理的孔径角。

The main parameters that effect horizontal resolution of migration imaging were identified as medium velocity , dominant frequency of seismic wavelet and aperture angle of migration processing .

在实际应用中，由于聚焦孔径角加大，观测系统范围也必须相应加大，否则经验公式失效。

When the formulas are applied , the scale of the observation system due to the large focus aperture angle must be enlarged , or else the empirical formula will be invalid .

介绍了一种用多模光纤构造的动态光散射粒径测量实验系统，系统中没有对接收光纤的孔径角加任何限制措施。

A dynamic light scattering ( DIS ) system for particle sizing is described , which is constructed by the use of multimode fibers and without any limits to the angle aperture of the receiving fiber .

分析表明，加大孔径角是提高偏移成像分辨率的最有效途径，特别是当孔径角值从15°加大到45°时，分辨率迅速提高；

The analysis results show that the best way to enhance resolution of migration imaging is to increase the aperture angle . The resolution was sharply increased when the aperture angle is set between 15 ° and 45 ° .

证明了其定向反射特性，并利用几何光学方法解决了全反射条件对入射孔径角的限制，以及单元有效反射面积对定向反射率的影响问题，同时也给出了阵列器件表面反射对定向反射率的影响。

Its retro reflective properties are demonstrated . By using the method of geometrical optics , the limit of the total reflection to the incidence and the influence of the available reflective area on the retro reflectivity are studied .

结果表明，入射光束的有效相干长度和聚焦透镜的最大数值孔径角的取值变化都会对光强分布、相干度和偏振度产生影响。

It is shown that the intensity , degree of coherence and degree of polarization in the focal region are all influenced by varying effective coherent length of incident beams and maximal angle determined by the NA of the objective .

讨论了照明光孔径角对分色系统色均匀性的影响，提出了用厚度渐变的楔形膜校正色差的方法，使色均匀性得到显著改进。

The influence of aperture angle for illumination light on uniformity of the color splitting system is discussed and a color aberration correction by means of wedge coating with . gradient thickness is proposed , thus the color uniformity can be obviously improved .

气膜孔径向角角度对冷却效率的影响

Numerical Simulation for Influence of Radial Angle on Gas-film Cooling Effectiveness

改进实孔径雷达角分辨力的广义逆滤波方法

Improvement of Angular Resolution of Real Aperture Radar Via Generalized Inverse Filtering

由于有较大的通光孔径和入射角孔径，AOTF在成像光谱的应用领域有着很大的潜力，但由于TeO2材料的色散造成的图像漂移和模糊问题，阻碍了应用的发展。

Because of the large light and angle aperture , AOTF has quite wide potential in spectral imaging field . While since the TeO_2 has natural dispersion , it will cause scene shift and imaging blur , and hence hinder the application in imaging field .

合成孔径雷达平台角运动误差测试系统设计

System Design for Testing Rotational Motion Errors of Airborne Synthetic Aperture Radar Platform

以线性调频信号为例，揭示窄带相控阵在大孔径宽扫描角情况下不能有效发射宽带高分辨信号的实质。

The essence of the fact that wideband signal can not be effectively transmitted using narrowband phased array in scenarios with large aperture and scan angle is given .

散射盘尺度和接收孔径对到达角起伏起平滑作用，当接收孔径远大于散射盘尺度时，由于孔径平滑作用，导出的表达式在任意天顶角都可以近似为弱起伏理论给出的结果；

When the receiving aperture is much larger than the scattering disk scale , the aperture-smooth effect is remarkable and the derived variance approximates the result given by weak-fluctuation theory for any zenith ;

第二章从探测地球表面高温事件的使用要求出发，结合当前中波红外非制冷探测器的性能，计算确定光学系统的焦距、相对孔径和视场角。

In chapter two , according to the requirements of detecting terrestrial high temperature events and the performance of current MWIR uncooled detector , the basic parameters of its used optical system , such as the focal length , relative aperture and field of view , are determined .

基于差波束逆合成孔径雷达成像的角运动参数估计方法

Angle Motion Parameters Estimation Based on Inverse Synthetic Aperture Radar Imaging for Difference Beam

随孔径及孔口边缘角的增加，气泡更快地脱离孔口，但脱离直径增加。

With the gas nozzle size and the orifice edge angle increasing , the bubble can detach from the orifice more quickly , but the detaching diameters of bubble increase .

减小聚焦极孔径对大发散角的电子有影响，但对聚焦作用的影响不如改变电位明显。

Reduction of the focus hole diameter strongly affects the electrons with large emission angle but its influence on electron focusing is less markedly than the influence of the variations in potential .

应用傅立叶红外光谱仪、X-射线衍射仪、扫描电子显微镜、热重分析仪、比表面积及孔径分析仪、接触角测定仪表征了其理化性能。

And their physical and chemical properties were characterized by FT-IR spectrum , X-ray diffraction , scanning electron microscope ( SEM ), thermo gravimetric analyzer , surface area and pore size distribution analyzer and contact angle apparatus .

本文研究了阻捻盘孔径和圆弧包围角对转杯纺纱和加捻效率的影响，对纺制高捻转杯纱选用阻捻盘有一定的指导意义。

In this article is researched the effect of navel 's diameter and the arc of the enveloped angle on the twist efficiency of rotor spinning , which has a guidance meaning to the selecting of a navel especially in spinning high twist on rotor spinning frame .

采用只与光路垂直的一片硅探测器，使其光敏面与孔径光阑几乎重合，以增大探测器的孔径角。

A piece of silicon detector vertical to light path is adopted , thus making its photo-sensitive surface nearly overlap with aperture stop and aperture angle of the detector can be enlarged .