Optimal stitching algorithm is extremely important for testing large-aperture aspherical optical elements by annular sub-aperture scanning technique.
优化的拼接算法是环形子孔径扫描测量大口径非球面光学元件的关键问题。
The system can be set up and adjusted quite easily and used to test large-aperture optical elements without high quality reference optics of the same size.
该系统结构简单，调整方便，并可以用作检验大口径光学元件而勿需同样尺寸的高质量参考光学件。
To isolate the retroreflections from the target and the self-oscillation in multipass amplifier system, the large-aperture electro-optical switch is required.
为了隔离后向反射激光以及激光器多程放大系统中的寄生振荡，需要研制一种大口径的电光开关。
An offset cross structure for supporting secondary mirror is proposed. The structure has a higher resonance frequency so it can be applied to large-aperture telescope.
提出了次镜支撑的偏置十字型中心结构，该结构具有较高的谐振频率，因此可以用于大口径望远镜中。
On the basis of summing up conventional testing methods for aspheric surfaces , annular sub-aperture scanning method is applied to measurement of large-aperture aspheric surfaces.
总结非球面常用检验方法在应用中优、缺点的基础上，使用环形子孔径扫描法来测量大口径非球面。
If star trails are desired, using a large aperture and higher sensitivity (ISO 200-400) can enhance the brightness of each streak.
如果需要星光轨迹，那么使用大光圈和较高感光度(ISO 200- 400)就能提高每条轨迹的亮度。
You get the same amount of light with a large aperture and a fast shutter speed as you do with a small aperture and a slow shutter speed.
你使用大光圈以及慢速快门所得到的光和你使用小光圈以及高速快门得到的光是一样多的。
Portrait mode chooses a large aperture (a small 'f' number) which will make the depth of field (the amount of your shot in focus) smaller.
人像模式用一个大光圈(f值小)，而让景深(清晰对焦的那部分)变小。
That price obviously puts large aperture scintillometers out of the reach of the average farmer in, say, India.
大眼睛闪烁仪的这个价位对于诸如在印度的普通农民来说，实在是太昂贵了。
Stable and uniform large aperture discharge is the key technology to obtain high pulsed energy.
实现稳定、均匀的大体积放电，是获得高单脉冲能量的必经途径。
The essence of the fact that wideband signal can not be effectively transmitted using narrowband phased array in scenarios with large aperture and scan Angle is given.
以线性调频信号为例，揭示窄带相控阵在大孔径宽扫描角情况下不能有效发射宽带高分辨信号的实质。
The smart large aperture space telescope is the most development potential space observation spacecraft in the future.
大口径空间灵巧望远镜系统是未来太空观测最有发展潜力的航天器。
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。
A method is introduced for testing stray light coefficient, vignetting coefficient and image surface uniformity optical system with large aperture and long focal length.
叙述一种用于测试大口径、长焦距光学系统杂光系数、渐晕系数、像面照度均匀性等光学参数的检测方法。
It is discorered that circular hole diffraction and circular disk diffraction pattern in large aperture convergent beam are different from those of general Fresnel diffraction.
实验中发现，经常使用的大孔径会聚光束的圆孔和圆屏衍射图样不同于一般的菲涅耳圆孔和圆屏衍射图样。
The methodic design of the IR imaging system with large aperture.
潘君骅。大口径红外成像系统的光学设计。
You may also want large aperture (size), but don't forget portability and convenience.
你也许想要更大的口径，但是不要忘了便携性和方便性。
The surface figure precision of the primary mirror in a large aperture telescope is a key factor influencing the imaging quality.
大口径望远镜主镜的面形精度是影响望远镜成像质量的关键因素之一。
The method can be applied to other large aperture optical systems.
所使用的分析方法可以应用于其他大口径光学系统。
FLIR – The large aperture enables a longer focal length, which provides higher resolution without losing sensitivity.
大孔径允许更长的焦距，从而在不损失灵敏度的情况下，提供更高的分辨率。
A large aperture laser beam scanning method by combining microlens arrays with rotating mirror is put forward.
提出微透镜阵列与转镜相结合的大口径激光光束扫描方法。
Large aperture space optical window has two features.
大口径高精度空间光学窗镜的技术特点有二。
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。
The stability and the precision of adjustment of large aperture servo reflector in laser system for nuclear fusion can be distinctively improved by using cross spring-plate shore.
采用十字簧板支承可有效提高激光核聚变光路系统中的大口径伺服反射镜的稳定性和可调节性。
Prestressed pier of hydropower station service radial gate features large aperture dimension, high water thrust and so on.
水电站工作弧门预应力闸墩具有孔口尺寸大、水推力大等特点。
It is necessary to combine several methods to test the spherical surface with small curvature and large aperture.
小曲率大口径球面的检验需要使用几种检验方法。
A more integrated theory of design and analysis has been established for the sake of developing the condensing lens type large aperture Frensnel lens.
建立了一套较完整的大口径聚光镜型菲涅耳透镜设计和分析理论。
A new compression scheme of interferential multispectral images is proposed based on the analyses of large aperture static imaging spectrometry.
从图像压缩的角度分析了大孔径静态干涉成像光谱仪成像原理，并提出了一种新的遥感多光谱图像压缩方案。
For large aperture lens, scanning method was developed to measure the focal length in different locations within the mirror.
针对被测镜大口径的问题，采用了扫描的方法，这样可以测量被测镜不同位置的焦距。
For large aperture lens, scanning method was developed to measure the focal length in different locations within the mirror.
针对被测镜大口径的问题，采用了扫描的方法，这样可以测量被测镜不同位置的焦距。
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