查询词典 angular aperture

The merit of the invention are: 1 adopting free curved surface imaging method , three part reflection type Zernike polynomial free curved surface forms short focal distance bigger, relative apertures bigger fields of view angle imaging , rectifying optical aberration much better and its structure is simple; 2 adopting the reflection structure without optical lens, has removed the effect of various chromatic aberration , guarantee the imaging articulation; 3 adopt the design of short focal distance big fields of view angle, focal distance 8 - 15 mm, field of view angles 100 -135 degree, having 120 times multiplications under 250 mm imaging distance, having ultra-thin characteristic property; 4 adopting big relative apertures design ,the relative aperture is 2.0-2.4, having improved the illuminance of flat surface; 5 adopting image space telecentric imaging method , ensures that the image surface irradiance is homogeneous.

本发明的优点是：1采用自由曲面成像方法，三片反射式Zernike多项式自由曲面形成短焦距大相对孔径大视场角成像，更好地校正像差，结构简单；2采用无透镜形式的反射式结构，消除了各种色差影响，保证成像清晰度；3采用短焦距大视场角设计，焦距8～15mm，具有100～135度的视场角，在250mm成像距离下有120倍的放大倍数，具有超薄特性；4采用大相对孔径设计，相对孔径为2.0～2.4，提高像平面上的光照度；5采用像方远心成像方法，保证像面辐照度均匀。

Heads - 300 heads that Aperture 0.6 - 0.04 mm 3, GJJG fast ground-water pump installed water filters, pumps do not protect Beidu Fonseca died, but also from people to Underwater clean water bitterness of mouth, coupled with the dark water from irrigation water can be trouble.

30目－－300目即孔径0.6--0.04mm3、GJJG型水泵地面快装吸水过滤器，既保护水泵不被堵塞卡死，又可免除人到水下清理吸水口之苦，配上吸水鼓还可免除灌引水的麻烦。

Extracting optical aperture synthesis observation objective fourier information based on least-squares approach［J］.

基于最小二乘法准则的光学综合孔径观测目标傅里叶信息提取［J］。

The analysis of the Fraunhofer diffraction pattern of the twin rectangle aperture

利用Mathematica软件，通过夫朗和费衍射公式计算双矩孔的衍射光强，并且绘制出了衍射图样。

The intensity distributing and the contributing range for using the serrated aperture are analyzed based on Fresnel diffraction theory.

应用菲涅耳衍射光强分布理论以及光轴上光强分布理论对波纹光阑在一定条件下的作用范围进行了分析。

Based on the Fresnel diffraction integral, the analytical expression for the field distribution of converging spherical waves passing through an annular aperture is derived and some special cases are discussed.

摘要基于菲涅耳衍射积分公式，推导出了会聚球面波通过环形光阑后场分布的解析公式，并讨论了一些特殊情况。

Based on the Fresnel diffraction integral and the complex Gaussian expansion for the hard-edge aperture function, a simple and analytical expression for calculating the diffraction field distribution of an apertured lens is presented.

基于菲涅尔衍射积分和将硬边孔径函数展开成有限项复高斯级数方法推导出了计算透镜衍射光强分布的解析表达式。

Staring from Fresnel diffraction integral,we deduced the optical intensity distribution in the Fresnel zone of the diffraction field of the annular-aperture lens axicon.

从菲涅耳衍射积分公式出发，推导多色高斯光束被球差透镜衍射后光强分布的解析公式，进行数值模拟和物理分析。

This method is proved feasible from a design example,it also shows that designed system is simple and compact and easy to fucus for zoom lens with large aperture.

标 签 变焦距物镜光学系统大口径成像质量 zoom lens optical system large aperture imaging quality

Synthetic aperture ladar: fundamental theory, design equations for a satellite system, and Laboratory Demonstration .

合成孔径激光成像雷达中非线性啁啾逐一扫描滤波校正算法的仿真与分析。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我