According to the general Huygens Fresnel diffraction integral formula, this thesis discusses the intensity distribution properity of the cosh-Gaussian beams passing through an astigmatic lens.
据广义Huygens -Fresnel衍射积分公式 ,推导了新型光束———双曲余弦高斯光束通过简单像散透镜后的光场分布特点 ,并通过数值计算 ,说明了像散系数对焦移、光强分布的影响。
This paper presented the basic principle of program circuit of the imaging lenses for model-EM 400 electron microscope.
文章深入浅出地介绍了EM 400电子显微镜成像透镜程序电路原理,扼要地阐述了M控制程序、地址编码器、放大倍数、相机长度/合铀、24×14矩阵等主要电路作用以及它们之间相互关系。
Schlieren projection lens
施利仑投影透镜，纹影摄影投影透镜
Application of TIR lens optimization design in LED micro-projector
TIR透镜优化设计在LED微投影显示系统中的应用
Shape from Shading for Specular Surfaces under Perspective Projection
透视投影下的镜面反射表面形状恢复新算法
lens hood for cinematographic cameras
电影摄影机透镜遮光罩
lens system focuses image on a photosensitive mosaic that is scanned by an electron beam.
把影像投到电子束扫描的光敏镶嵌屏幕上的透镜系统。
Research on Free Three-dimensional Display System Based on DMD Projection Technology and Cylindrical Lens
基于DMD投影技术及柱状透镜的自由立体显示系统的研究
meniscus astrograph
弯月形透镜天体摄影仪
meniscus photoheliograph
弯月形透镜太阳摄影仪
Anastigmatic lens: Photographic lens corrected for astigmatism as well as other distortions. Process camera lenses are anastigmats.
消像差透镜:消除纵横像差和其他畸变的摄影用透镜。制版照相机所用的镜头是消像差透镜。
The simplest form of projection is a perspective projection.
最简单的投影形式是透视投影。
a concave lens [mirror]
凹透镜 [凹面镜]
The lens or lens system in a microscope or other optical instrument that first receives light rays from the object and forms the image.
物镜首先从物体上接收光线并形成影像的显微镜或其它光学仪器中的透镜或透镜系统
lens turret
(摄影机或电视机上的)透镜旋转台
The Effects of Astigmatic Lens on the Focal Switch of the H-G Beams
透镜的像散对H-G光束的焦开关影响
Influence of lens to samples distance on laser-induced breakdown spectroscopy measurement
透镜到样品表面距离对LIBS测量的影响
The effect of RGP on corneal curvature
硬性透气性接触镜对角膜曲率的影响
meniscus (shaped) lens
凹凸透镜，弯月形透镜
aplanat [aplanatic] lens
消球差透镜，齐明透镜