Analyses about the beam of laser diode bar collimated by a cylindrical lens;
用圆柱透镜准直半导体激光光束的分析
By using the similarity of wave crest to cylindrical lens,a new method for measuring the velocity of liquid phase wave in the range of specified wavelengths was proposed, its applicational scope was determined by means of simulation evaluation,and meantime,this model was simulated in the lab.
探讨了低表面张力液体的表面波波速与波长的关系,利用该液体的单个波峰性质与圆柱透镜性质相似的特点,提出了一种新的在特定波长范围内测量该液体相速度的方法,并通过模拟计算确定了该测量方法的适用范围,同时在实验室模拟了该模型,实验结果表明在一定范围内该测量方法具有较高的精度。
According to the basic principle of light ray propagation, the collimating characteristic, the intensity distribution, the transfer efficiency of light energy and the transport coefficient for the laser diode ray in the fast axis direction passing through a cylindrical lens are analytically calculated and discussed.
根据光线传输的基本原理,通过计算和推导,用解析式表达并讨论了半导体激光器快轴方向发散光束通过圆柱透镜后的准直特性、光强分布和光能转换效率与圆柱透镜的半径、介质折射率、介质损耗、安装距离等可调参数以及界面反射的关系。
The paper analyzes the change of the exit light from a circular polarizing filter used inversely according to the interference theory of polarized light, measures the spectral transmittance curves with the combining of circular polarizing filter and linar polarizing filter, and summarizes the photographic performance of the circular polarizing filter used inversely.
根据偏振光干涉的原理 ,分析了摄影中反向使用圆偏振滤光镜时出射光随入射光及圆偏振镜旋转方位的变化情况。
Common polarizing filters are linear and may affect the AF and AE functions of digital camera this can be remedied by using circular polarizing filter therein the front part is a linear polarizing filter whereas the back part is a specific filter capable of rotating the light vibration plane of the polarized light passed through the front filter consequently not affecting the AE and AF functions.
偏振镜有线偏振镜和圆偏振镜之分,一般的偏振镜为线偏振镜,有可能影响数码相机的AE和AF功能,圆偏振镜的前部起偏振镜作用,通过特定振动方向的偏振光,其后面部分则能使该偏振光的振动方向在一个圆周上旋转,恢复为非偏振光,就不会影响相机的AE和AF功能了。
Unstable Bessel Optical Resonator with an Axicon
带圆锥透镜的非稳贝塞尔光学谐振腔
Geometric optics is used to analyze the influence on beam transmission as circular symmetry manufacture error exists on an axicon.
用几何光学分析了圆锥透镜的锥面存在圆对称加工误差时 ,对光束传输变换的影响 ;用衍射理论及稳相法分析了锥面的非圆对称加工误差及横截面由圆变为椭圆时 ,其后衍射光场的变化情况 。
AbstractIn the paper, an annular focus system of laser, combined by a convergent spherical lens and two axicons, one divergent and the other convergent, is proposed.
本文首次计算了由会聚球面透镜、发散圆锥透镜和会聚圆锥透镜形成的激光环形聚焦光斑的光强分布、特征宽度和光能量集中分布,所得到的光场分布表达式很适合于进行数值计算。
During the Song and Yuan Dynasties the bronze mirrors appeared in all shapes: round, rectangular, rhomboidal, octagonal, and those with a handle.
宋、元时期出现了圆镜、长方镜、棱镜、八棱镜和带柄手镜等。
The shopkeeper showed him a round mirror and said to him laughing,
店主拿来一面圆镜给他看并笑着说：
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
EFEAL Extended Field Elliptical Aperture Lens
可扩展扫描椭圆孔镜头
domeless solar refractor
无圆顶太阳折射望远镜
Spectral Analysis of Ball Pen Script by FTIR Microscope with ATR Objective;
FTIR显微镜/ATR物镜法检测圆珠笔迹的研究
The circularly polarized light is then focused down onto the disk.
圆偏振光经物镜聚焦后射到光盘上。
a pair of spectacles, tights, scissors, compasses
一副眼镜、 一双裤袜、 一把剪子、 一个圆规
A lens is a round piece of glass, but it is not flat.
透镜是一个圆形玻璃片，但不是平的。
A single cylindrical wavefront impinges on both prisms.
一个圆形波阵面射到两个棱镜上。
Laura had decided to return to her husband.
劳拉已决定与丈夫破镜重圆。
The Design of the Ellipse Picture Frame Milling Machine and the Method of Product's Layout;
椭圆形镜框铣床设计及产品排料方法
REALIZATION OF 1.56m TELESCOPE DOME ELECTRIC CONTROL SYSTEM REFORMATION
1.56m望远镜天文圆顶电控的改造
Unstable Bessel Optical Resonator with an Axicon
带圆锥透镜的非稳贝塞尔光学谐振腔
On MRI, the lesion appeared double convex lens or egg in shape in coronal section and round or arrow head like in shape in sagittal section.
MRI冠状位像呈“双凸透镜”形、卵圆形 ,矢状位像呈卵圆形、“箭头样”表现 ;
Objective To discover the mechanisms of keratoconus by observing the ultrastructure of keratoconus with light microscopy and transmission electron microscopy.
目的 观察圆锥角膜在光镜及透射电镜下的超微结构,试图了解圆锥角膜的发病机制。
embossed film
(带半圆凸透镜层的彩色电视录象用)浮雕影片
The usually circular area in which the image is rendered by the lens system of an optical instrument.
仪器的透镜系统所能看到的通常是圆周的区域.