To improve the imaging quality of CCD camera and make the lens small in size,compact in structure,the wide field of view(WFOV) optical lens with the aspheric surface was designed.
为提高CCD照相机的成像质量,同时使镜头结构紧凑、小型化,在大视场光学镜头的设计中,采用非球面设计。
The measured temperature of a target in full field of view is the real temperature.
全视场目标所测得的温度为目标的真实温度,但是现实中由于距离等因素的影响,不能保证每次测量都让目标充满整个视场,背景辐射对测量结果一定会产生影响,因此准确测量未充满视场目标(本文称为半视场目标)的方法将有重大意义。
To ameliorate the field of view of Cassegrain optical system,a diffractive optical element(DOE) is first successfully introduced to the Cassegrain optical system and the design scheme is provided in this paper.
为了改善卡赛格林光学系统的视场,首次将衍射透镜成功地引入大视场卡赛格林光学系统的设计中并给出了设计方案。
They were illuminant,visual field,background,and luminance.
主要探讨了影响色差评定的因素:光源、视场、背景、照度。
This paper discussed the effect of visual field, colour space and standard illuminants on the calculated value of colour difference of the glass are also analyzed.
本文讨论了视场、色空间和标准照明体对色差计算值的影响，建议了一种镀膜玻璃色差的计算方法。
The optimal design for laser beam scanning microimaging system oflarge visual field and high resolution is researched with the picture element density of500 pixels/mm.
在500像素／mm的像素密度要求下，论述大视场高分辨率二维激光束扫描显微成像系统的最佳设计。
Two-step stereogram has a narrow field of vision,also it is complex to make.
二步法合成全息存在视场狭小、工艺复杂等问题。
Design of wide-FOV optical system with optical gain;
宽视场有增益光学系统设计
According to the requirement of scene optical display system for large-scale transport aircraft flight simulator that the aberrance of image should be small and FOV be large, a few projects of scene optical display systems for flight simulator were discussed.
视景光学显示效果是评价飞行模拟器性能的重要指标之一,根据大型运输机飞行模拟器视景光学显示系统图像畸变小和大视场的要求,研究了飞行模拟器的视景光学显示系统几种方案,给出了分光镜式无限远显示系统、离轴球面全反射和离轴高次非球面全反射无限远显示系统的基本原理,并数值分析了它们的主要性能,根据其性能比较,提出了大型运输机视景光学显示系统的最佳视景显示方案。
With a satellite running, if the diffuse light such as the sunlight or the moonlight entered the view field of star sensor, the precision of star sensor would be debased.
卫星在运行过程中,星敏感器视场若受到太阳光、月球反射光等杂散光影响,将会大大降低星敏感器指向精度。
Research of the methods for enlarging the field-of-view in digital holography;
扩大数字全息视场的方法研究
The field-of-view of a scanning laser radar which adopts a pre-objective beam steering optical antenna is discussed - It shows that the scanning field-of-view is usually smaller than the defined field-of-view of the antenna telescope.
分析了出瞳扫描方式扫描视场角与激光雷达光学系统参数的关系，认为最大扫描现场角比主天线望远镇静态视场角小。
To enlarge the field-of-view of digital holographic surface measurement,so that digital holography can be applied in three-dimensional(3-D) surface measurement of large objects,based on Fresnel off axis digital holography,different part of the object is illuminated singly and their holograms are recorded respectively.
为扩大数字全息的测量视场,使数字全息可以应用于大物体三维形貌的测量,利用菲涅耳离轴数字全息,让照明光依次照明物体的各个区域并分别记录全息图,利用精密电控旋转台精确控制参考光的入射角以保证每次记录时物参角不变,通过参考光入射角的变化量确定物体不同被照明区域之间的位置关系,对获得的物体去包裹的相位图进行拼接,进而得到整个物体的三维形貌。
field of view angle
视场角 -直接日射表
field stop reticle combination
视场光阑-调制盘组合
extra-wide field stereo-microscope
超宽视场立体显微镜
dark field microscope
暗视野显微镜，暗视场显微镜
dark field microscopy
暗视野显微术，暗视场显微术
The field of view, dark in the absence of the crystal, becomes light when the crystal is inserted.
没有晶体时，视场是暗的；而晶体插入时，视场就转为明亮。
In an array laser warning, two adjacent photodiode field-of-views (FOV) overlap and form overlapped FOVs.
在阵列式激光报警器中 ,相邻两光电二极管视场重叠 ,形成重叠视场。
Within the field of view of a television or movie camera.
曝光处于电视机或电影摄像机视场之内
Outside the field of view of a television or movie camera
避开处于电视机或电影摄像机视场之外
walked the Bounds of the property.
巡视了大农场的边界
visual aid
飞机场目视助航设施
visual approach slope indicator
目视进场下滑道指示器
a televisual scene
一个适于拍电视的场面
TV violence/violence on TV
电视中的暴力场面.
a live television program.
现场直播的电视节目
video wall simulation [range]
电视幕墙仿真系统〔靶场〕
This is television news broadcast.
这是一场电视新闻广播。
The immediacy of live television coverage.
电视现场直播的直观性