lensless aperture

Focusing of Partially Coherent and Circularly Polarized Bessel-Gaussian Beams Through a High Numerical-Aperture Objective

部分相干圆偏振贝塞耳-高斯光束经高数值孔径透镜的聚焦

short focal length (high aperture) lens

短焦距(大孔径)透镜

The diameter of the objective of a telescope.

孔径望远镜物镜的直径

Rayleigh-Sommerfeld Diffraction Formula on the Thin Acoustic Lens With Larger Aperture

较大孔径薄声透镜声场的瑞利─索末菲衍射公式

condenser aperture

聚光镜孔径;聚光镜孔径;聚光器孔径;聚光器孔

Its practicality effective aperture ratio has been improved to about92.8%, consequently the concen-tration efficiency of microlens array is increased.

其实测有效孔径比可达到92.8%极大提高了微透镜阵列的聚光效率。

Reconstruction of Synthetic Aperture Digital Lensless Fourier Transform Hologram by Use of the Screen-Division Method

合成孔径数字无透镜傅里叶变换全息图的分幅再现

The lens or lens group closest to the eye in an optical instrument;an ocular.

目镜光学仪器中靠近眼睛的透镜或透镜组；窥孔

ultra-rapid lens

甚大光强[相对]孔径物镜

filled aperture radio telescope

连续孔径射电望远镜

aperture synthesis radiotelescope

综合孔径射电望远镜

object lens of large relative aperture

大相对孔径(摄影)物镜

a compound camera lens with a relatively high aperture.

带有相对高孔径的照相机复合镜头。

filled and unfilled aperture radio telescope

连续和非连续孔径射电望远镜

Video Lens Design for CCD Camera of Wide-angle Large Aperture

广角大孔径CCD摄像镜头光学设计

wagon-box rivet head

扁头形[透镜形]大直径铆钉头

Effects of Porosity on Gas Permeability and Maximum Pore Size of Fiber Felts

孔隙度对纤维毡透气性能和最大孔径的影响

Aspheric mirrors and condensers in various diameters and relative apertures.

（4）各种不同口径及相对孔径的非球面镜及非球面聚光镜。