Spotsi-the angle at the tip of the cone, or the spot aperture. 圆锥体顶角角度,或是聚光灯孔径。
Taking into consideration of the effect of the ultrasonic off-axis angle 8a, we have also found that the influence of the variation of da on the performance of AOTF is little when the angular aperture of the incident light meets a certain criterion. 本文还考虑了超声离轴角θa对入射光角孔径的影响,发现当入射光的角孔径满足一定的条件以后,θa的改变对器件性能的影响不大。
For dual-detector density tool, Monte Carlo method is used to study the effect of the short-spacing and the angle of short-spacing detector collimating aperture on logging performance. 对双探测器密度测井仪器,应用蒙特卡罗数值模拟方法研究短源距和短源距探测器准直孔角度变化对测井性能的影响。
This article discusses the optical Performances and aberrations of co-centre lens system s. The refractive co-centre lens system with view-field angle of 160 °× 32 ° and relative aperture of 1/ 2. 8 is presented. 讨论共心镜系统的光学特性和像差特点,并提出一种160°×32°视场,1/2.8相对孔径的广角大孔径共心透镜系统。
At present, this apparatus is used mainly for the examination of the perfectness of convergent spherical wave surface with aperture angle ≤ 1:3, hence it can be used for the non-contact direct test of aluminized or unaluminized concave mirrors with any aperture. 该仪器现在专用来检验张角≤1:3的会聚球波面的完善性.因此可以用来无接触的直接检验任意口径的镀铝或未镀铝的凹球面镜;
Numerical analysis on radiation angle coefficient of radiant porous body with square aperture 方形孔道辐射多孔体的辐射角系数数值分析
In order to avoid angle estimation ambiguity problem, the sensor spacing of the Uniform Linear Array is generally set no more than half the wavelength of the source signal. Thus, the array aperture is fixed if the sensor number is chosen. 为避免测向的模糊,均匀线阵的阵元间距一般不大于接收信号波长的一半,阵元数一定时,天线孔径就被限定了。
And in practice, in order to obtain a high angle resolution, it generally employs the microphone arrays of large aperture. 在实际运用中,为了获得高的角度分辨力,一般采用大孔径的麦克风阵列。
The angle resolution of the traditional staring imaging, ie. the real-aperture imaging is limited by the actual antenna array aperture. 传统的凝视成像,也即实孔径成像,其角度分辨率受实际天线阵列孔径的约束,限制了其在实际中的应用。
First introduced the key components of optical lens which affect the image quality, elaborated the concept of the main parameters of focal length, angle, field of view and the image field and aperture, etc., as well as the relationships between them. 首先介绍了影响成像质量的关键器件光学镜头,对其主要参数焦距、视角、视场和像场以及光圈等概念以及它们之间的关系进行了详细的阐述。