Improvements And Developments Based On Integrated Experiment Instrument Of Spatial Filtering With Laser Speckle Reduction

Information optics， also known as Fourier Optics，introduced linearsystem of information science into optical， and formed a new opticalbranch.Information optics-Change the traditional optical method to studyoptical phenomena in the airspace creatively introduced a new method ofresearching of optical phenomena in frequency domain space，And developedA variety of methodsof optical information processing.Experimentalprocedures in very important to understand the abstract information opticstheory， But For current， the experimental apparatus for researching ofoptical information in modern physics experiments in college is onlytraditional Abbe filter optical experiments. Experimental content and theeffect is far from ideal.usually students have to Set light path on the opticalbench， Each of experiments occupied a large space， content andtime-consuming and low efficiency， And experimental phenomenon isobserved in a dark room with the eye，Can not quantitatively verify thecorrectness of the theory. Affect the experimental results."IntegratedExperiment Instrument of Spatial Filtering with Laser Speckle Reduction"Provided a good information optical processing platform for increasingnewly experiments， linked to the development of modern science andtechnology and to the electro-optical information technology inComprehensive experiment.The main work of this thesis is to Continueimprove experimental device and to experimental research and developmentbased on self-made "Integrated Experiment Instrument of Spatial Filteringwith Laser Speckle Reduction".First a brief introduction to the basic principles of spatial filtering andspatial filtering system and filter，Then introduces the basic features of theself-made Integrated Experiment Instrument of Spatial Filtering with LaserSpeckle Reduction，through detailed system analysis on the Instrument andThe requirements of the filtering experiments,The following improvements aretaken.1.Design and produce object transparent film， modulating film and Gratings based on the parameters of Integrated Experiment Instrument ofSpatial Filtering with Laser Speckle Reduction2.In order to observe andquantitatively confirm the experimental system octave filter in detail onoutput interface， improved filter design makes the application moreconvenient and flexible.3Improve the output signal to the data acquisitionsystem for subsequent experimental data processing，Makes the interface morefriendly，suitable for application.4method of Improving the Accuracy ofmeasurement of filament diameter is proposed.5The production ofholographic grating is one of the compulsory experiment of modern physicsexperiment of undergraduate students，In order to ensure the effect of theholographic grating experiment，Temperature controlling of developer Liquidis necessary in the different seasons，Produced a temperature control box toensure a constant temperature，so that provided the necessary conditions toaccurately find the linear imaging region.