The ramplight script creates a point light whose color is controlled by the volume of a sphere to produce the effect of light color and intensity that is contained exclusively within the sphere 渐变光创建了一个点光源，它的颜色是通过一个球的光量来控制的，在一个球里包含专有的产生一个光的颜色的强度的效果。
Compared with the results based on hopkins theory , the fast computer simulation results show that the diffraction intensity in proximity lithography may be simulated more rapidly and precisely with the new model 结果表明采用基尔霍夫衍射理论及多点光源的衍射光场非相干叠加的模型不仅快速而且也可以比较准确地模拟接近式光刻的衍射光场分布。
A fast computer simulation of diffraction intensity on the photoresist surface was performed based on kirchhoff ' s diffraction theory and the incoherent super - impose of multi - point source diffraction intensity 利用基尔霍夫衍射理论及多点光源的衍射光场非相干叠加方法，对光刻胶表面的衍射光场进行了快速计算机模拟，并与霍普金斯理论计算结果进行了分析比较。
The form of the psf has been deduced according to the fresnel diffraction , and it has been analyzed that the frings density of the psf depends on the axicon ' s refracting angle and the distance l between the point light source to lens l2 利用菲涅耳衍射理论，推导出相干光照明下无衍射系统的点扩散函数( psf )的形式，并分析出点扩散函数的条纹疏密与锥镜的夹角和点光源的位置有关。
Based on the principle of light - pen mode non - track three dimensional coordinate measuring technology , the paper uses psd as the photoelectric receiver and point light modulated by frequency to measure coordinates 本文通过对光笔式无导轨三坐标测量的研究、提出了以psd ( positionsensitivedetectors ，位置检测传感器)作为光电接收传感器，用高频调制光作为点光源，进行位置坐标测量的新思路，以提高整机的精度。
After the comparing the simulation results with the theoretic results under the three followed condition : a point light source on the parabola reflector focus , a point light on the ellipsoid reflector focus and a point light source before the parabola reflector focus , a conclusion is gotten that the two results are generally accordant , the accuracy of the simulation software reach the engineering requirements and the computational simulation software of photometric characteristics of headlamp of motor vehicles can guide the design of the headlamp reflectors 比较了点光源位于抛物面反射器和椭球面反射器焦点的情况和点光源偏离抛物面焦点的情况下照度的理论计算结果和采用本文的照度仿真计算结果，其仿真计算结果和理论计算结果基本相符，能满足工程上的要求，说明仿真计算软件对前照灯的反射镜的设计具有很好的指导意义。
We take advantage of the method of trying and supposing to finish the experiment . for example , we firstly compute the number of the led regarding perfect situation , then finish the experiment and rectify the numerical value . for another example , we firstly compute the resistance under the desiring situation , secondly choose appropriate resistances according to the debug result 在试验过程中,采用了假设法,在光源强度的选择中,首先将led看作理想点光源,然后对其光路进行分析,计算出led需要的个数,最后在试验中对结果进行修正;在确定光源驱动电路电阻时,也是考虑各种器件都工作在理想状态下,然后计算出其值,最后在调试的过程中对其进行修改。
If we could make use of the technology of computer seeing and realize automatic recognition of identifying id card numbers , we should greatly improve the efficiency of id card administration . presently , most recognition systems of id card numbers are based on scanner , but this systems cannot meet the demand of long and real time catching image . this text lucubrates theoretic about image manipulation and pattern recognition and sets up a integrated regnition system of identifying id card numbers . on ccd vedic . concretery consist : ( 1 ) firstly investigating the segmentation about image of illumination asymmetry . due to a dotal lamp - house , the illumination of id card numbers image is asymmetrical 本文应用了图像处理和模式识别技术，建立了基于摄像头的身份证号码的识别系统。主要研究内容具体包括如下： ( 1 )研究了亮度不均匀的身份证号码图像的分割。由于采用点光源进行局部照射，导致身份证号码图像的亮度不均匀，因此直接对图像采用全局阈值进行分割不能有效地分离号码体。
The conclusions are as follows : the ultrasonic intensity is proportion to the laser intensity ; the ultrasonic induced by a laser line source has much more advantages than by a laser point source , such as stronger energy , higher snr , more directivity and shape ; the intensity of cfpi ' s output signal is linear with ultrasonic vibration velocity , and is effected by incidence angle and scattered angle ; snr will increase by reducing cfpi ' s bandwidth , reducing incidence angle , increasing cavity ' s length and reflectivity 在分析点光源激励声表面波机理的基础上，求出了线光源激励的超声振动的位移表达式，发现线光源激励的近场区表面波具有波形好，信噪比高，指向性好，幅度强等特点。通过理论推导，得出共焦fabry - perot干涉仪的输出光强除了与样品表面的振动速度成正比，并与入射角和散射角有关；适当减小cfpi的带宽，增加腔长，增大镜面反射率，或者减小检测入射角都可以提高系统的信噪比。
The topic we have tackled are as the following , ( 1 ) numerical simulation for light propagation and visualization of light - field distribution of fresnal diffraction and fraunhofer diffraction with ( 2 ) computation and display of hologram by method of simulation - anneal ( 3 ) hologram computation of a point source based on method of interference hologram computation 论文中具体完成了以下工作： 1 、对光的传播特性进行了数值模拟，以可视化方式表现了菲涅耳衍射和夫琅禾费衍射的光场分布。 2 、用模拟退火算法实现了全息图的计算及显示。 3 、在基于干涉全息图的计算方法上，计算了一个点光源的干涉全息图和相位分布。
