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- Observant photographers have noticed that not all lenses are created equal: large aperture lenses show strong out-of-focus effects while small-aperture lenses lead simply to a softening of the image. 细心的摄影者会发现不是所有的镜头都是一样的：大光圈的镜头呈现强烈的失焦效果，而小光圈的镜头只是稍微的让图像柔化一些。
- Usually, a large aperture lens will give better results. 若使用大光圈的镜头,效果当然更理想。
- large aperture lenses 大口径透镜
- What lense do you use? Ultra large aperture requires? and flash? 用尽旧镜微距能力，专人指导使用微距滤镜，拍尽微距世界！
- For improving SAR's ECCM capability adoption of phased array antenna with large aperture is one of effective measures. 为了改进合成孔径雷达的ECCM能力，采用大孔径相控阵天线具有重要意义，是有效的措施之一。
- The principle of the system of interferometer in large aperture image spectrometer has been expatiated. 提出了大孔径干涉型成像光谱仪的原理,并展示了攻关样机和实验数据。
- The system has large aperture and low F number due to the requirement of large FOV. 空间推扫相机的光学系统要求具有大视场、大口径、低F数等特点,据此设计了一种3波段光学系统。
- The merits of this interferometer are adjustable sensitivity, antivibration and very large aperture. 这种干涉仪的优点在于灵敏度可调,抗振性强,易做成大口径。
- Design of Catadioptric Large Aperture Three Group Elements Infrared Zoom System[J]. 引用该论文 王鹏;赵文才;胡明勇;翁志成.
- A precise measurement system of high reflectivity for scanning large aperture components in high power laser system is developed. 为了测量高功率激光传输系统中大口径高反射率元件,研制了一种镜面扫描的精密测量系统。
- To meet the requirement of the specification of the large aperture component in ICF system, the sub-aperture stitching interferometer is introduced. 为了满足我国ICF系统大口径光学元件的检测需要,提出了子孔径拼接干涉检测的方法。
- A new method to calibrate a large aperture infrared opto-electric system by using a small aperture illumination collimator is introduced in detail. 摘要介绍了一种用小口径照明光管定标大口径红外光电系统的新方法。
- It is a difficult task to measure the reflectance, transmittance and optical uniformity of an optical coating with very large aperture. 在大口径光学元件高质量薄膜的制造过程中，对于透射率和反射率的均匀性测试是非常困难的。
- A special test gauge for large aperture inner diameter and roundness is designed in this paper,and the gauge error is analyzed by calculating and determining its parameters. 介绍一种大孔径内径和圆度专用检验量具的设计,并通过计算确定该量具的设计参数并对该量具进行误差分析。
- By using large aperture infrared imaging lens and amplifying, A/D converting, NUC, the system produces digital image signal which in direct ratio with radiation of target. 该系统采用大口径红外成像镜头，图像信号经放大、A/D转换和图像非均匀性校正，输出与目标辐射量成正比关系的数字图像信号。
- The existing systemsmostly use the aspherical mirror as the primary which is hard to make large aperture due tothe difficulty of fabricate and assemble. 但是，现有的光学系统多采用复杂非球面镜做主镜，其制造难度大、成本高、装调困难，不容易做大口径。
- The large Hoop Truss Deployable Antenna (HTDA) in the space, with large aperture, light mass, big flexible character and so on, is type flexible multi-contact system. 空间大型环形可展天线具有展开口径大、质量轻、柔性大等特点,是一个典型的多柔体结构。
- This paper discusses the accuracy problem of testing a large aperture flat mirror by using stitching interferometry, and analyses the stitching accuracy in theory and experiment. 讨论了在用子孔径拼接法检测大口径光学镜面时的精度问题,并分别从理论上和实验中对拼接检验的精度做了定量分析。
- Coma A lens aberration which causes subject points to record as coma-shaped images. This effect is mostly found in fast lenses and when large apertures are used. 透镜的一种像差。它使图像点带有像彗星尾巴似的影像。这个情况多数在强光镜头,使用大光圈时发生。
- Based on Collins formula and ABCD propagation matrix theory,the propagations of laser beams with different profiles through an aperture lens are analyzed and compared under the same laser beam power and initial beam width in this paper. 基于柯林斯公式和ABCD传输矩阵理论 ,在相同激光功率和初始束宽下 ,研究了不同空间分布光束通过聚焦光学系统的传输特性。
