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Fast scanning delay line system design and experimental study

Author: NiuManPing
Tutor: GaoWanRong
School: Nanjing University of Technology and Engineering
Course: Optical Engineering
Keywords: Rapid scanning optical delay line Blazed grating Scanning galvanometer Group delay
CLC: TP391.41
Type: Master's thesis
Year: 2009
Downloads: 90
Quote: 1
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Abstract


Low coherence optical coherence tomography (Optical Coherence Tomography, OCT) using a broadband light source to achieve high resolution , non-invasive optical coherence tomography . One of the most challenging technical problems in the OCT system is how to achieve rapid scanning in the reference arm in order to achieve real-time imaging . From both theoretical and experimental aspects of optical delay line system . First discusses the basic principles of the various optical delay line scanning method , and to compare its performance parameters of the advantages and disadvantages ; depth study of the second principle of rapid scanning delay line based on the nature of the Fourier transform of the diffraction grating and a lens , the system structure , and various system parameters and the important components ; analysis of the scanning galvanometer mirror and the desired control signal and the output signal , and shows a method of providing a control signal and output signal connections . On this basis , the calculation of the parameters of the experimental system , to build a fast scanning delay line experiment platform , and gave details of the experimental procedures , analysis of the inadequacies of the experiment , discussion system authentication method for later added to the OCT system stable , accurate and fast scan is guaranteed .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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