1) 4F optical system
4F光学系统
1.
Study on the angular displacement compensation of filter function in the 4f optical system
4f光学系统中滤波函数角位移补偿的研究
2.
The function for IFT & FT optical fourier transform using lens based on 4F optical system is analyzed so that point out the physics signification, which its parameters include and put out the design for the spectrum feature analysis experiment use the lens with the same focal length,combining with the computer and CCD sampling & analysis technology.
分析了基于4F光学系统的透镜FTI、FT变换光学的数学表述,指出其参数所表征的物理意义;据此提出利用若干等焦距透镜建立变换光学频谱特征分析实验的构思,利用CCD器件和计算机进行采样、分析,阐述d0试件几何孔径等因素对其变换光学频谱特征的影响。
2) optical 4f system
光学4f系统
1.
Spatial frequency characteristics of optical 4f system;
光学4f系统的图像空间频率特性
2.
To expand optical wavelet transform method into the digital signal processing domain,the optical implementation method of discrete wavelet transform algorithm(Mallat algorithm) for optical 4f system is proposed.
针对振幅型空间光调制器只能实现非负的实函数,且CCD只能记录光的强度,提出一种应用于光学4f系统的光学小波滤波器的设计方法。
3) 4f optical imaging system
4f光学成像系统
1.
Both of the methods are based on the 4f optical imaging system.
这两种技术都是建立在4f光学成像系统基础之上的。
4) 4f system
4f系统
1.
Optical logic coding based on 4F system;
基于4F系统光学逻辑编码的实验
2.
Wavelet threshold denoise method for 4f system based on SAR statistic parameters
基于SAR统计参数的4f系统小波阈值去噪方法
3.
Off-axis Fresnel holograms recorded with a magnified image, which is obtained by using a 4f system, are numerically reconstructed.
通过记录经4f系统放大的物体实像的离轴菲涅尔数字全息图,由数字再现技术获得物体的放大像,由此计算出物体相位反差像,从而得到物体的微现形貌。
5) 4f optical system
4f系统
1.
Using the optical correlation recognition technique,an image s correlation recognition system based on 4f optical system is suggested,which is a real-time infrared image processing system.
利用光学方法的半色调网屏技术实现了红外图像的假彩色编码,提高了红外图像的可识别性;利用光学相关识别技术构造了一种基于4f系统的光学图像实时相关识别系统,以实现对红外图像的实时处理和识别。
6) 4f system
4f 系统
1.
Introduce the principle of third-order nonlinear refractive index measurements using this system:nonlinear sample is fixed at the Fourier plane of the setup,a single laser shot is emitted into the 4f system,and the spatial distribution of the intensity in the output plane of 4f system is recorded by a CCD camera, then we can induce the third-order nonlinear refractive index by num.
概述了4f 系统相干成像法提出和发展的过程,介绍了用这种方法测量三阶非线性折射率的基本原理:非线性样品被放置在4f 系统的频谱面上,利用单脉冲激光入射4f 系统,并用 CCD 记录下出射面上光场的空间分布情况,然后通过数值计算的方法得到样品的三阶非线性折射率。
补充资料：光学系统
分子式：
CAS号：
性质：又称光具组。用于研究光束的反射、折射、色散、吸收和偏振等特性，按一定结构方式所组合的反射镜、透镜、色散元件(光栅、棱镜、滤光片)、狭缝机构或光阑等元件。光学测试仪器均包含光学系统。
CAS号：
性质：又称光具组。用于研究光束的反射、折射、色散、吸收和偏振等特性，按一定结构方式所组合的反射镜、透镜、色散元件(光栅、棱镜、滤光片)、狭缝机构或光阑等元件。光学测试仪器均包含光学系统。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条