numerical aperture

基本解释

Compared with other UV or DUV lithography lenses, this lens can meet the needs of higher numerical aperture and full use of its field.
该物镜与国内外现有的紫外或深紫外光刻物镜相比，既能满足大数值孔径的需要，又能充分利用物镜的视场。
The system can also be applied to measurement of numerical aperture of polymer optic fiber and characterization of the refractory index distribution.
该系统也可实现聚合物光纤数值孔径的测量和折射率分布的表征等。
By this way we can design high diffraction efficiency, as well as lager numerical aperture diffractive lens under current machine fabrication condition.
该方法在现有衍射透镜加工设备分辨率条件下，可提高衍射透镜的衍射效率，增大衍射透镜的数值孔径。