numeric aperture

基本解釋

The near-axis field distribution of circular aperture antennas is obtained by numeric integration method.
采用數(shù)值積分方法分析了圓口徑天線非軸向近場分布特性。
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And the numeric simulation is done to get the multi-supporting results of the optical elements with large aperture.
針對各向同性圓形光學鏡面做了具體的模擬計算，對圓形鏡面的多點支承問題進行了初步研究。
When system is in long focal length, the height of the immediate image is small while the numeric aperture is large. This will help to correct aberrations of image.
在長焦位置，中間像面高度小，數(shù)值孔徑大，這種結(jié)構(gòu)形式有利于系統(tǒng)的像差校正。