Dissertation > Excellent graduate degree dissertation topics show

Research on the Technology of Multi-channel Computer-generated Holograms

Author: LiuZuo
Tutor: WangDing
School: Chongqing University
Course: Optical Engineering
Keywords: Computer generated hologram Roman encoded type III Multi-channel CGH Fourier transform
CLC: O438.1
Type: Master's thesis
Year: 2007
Downloads: 163
Quote: 1
Read: Download Dissertation

Abstract


Computer generated hologram is a new technology for the production of holograms, its formation and development of a few decades. It is not only a comprehensive record of the amplitude and phase of the light wave, and in the low-noise, high repeatability, flexible, wide range of applications, as well as record the objects and other aspects of the world that does not exist is far better than the optical holograms. Therefore, the calculation of holographic techniques are increasingly widely used in optical computing, making holographic optical elements, holographic three-dimensional display, holographic interferometry measurement, optical information storage, laser scanning, and security encryption and other fields. In the CGH technology development process, produce a wide variety of computing holographic encoding method. But with these encoding method can only be recording and reproduction of information of an object, that are single-channel computer generated hologram. In recent years, Mendlovic et al proposed multi-channel holographic simultaneously encode two or more objects, increase the amount of information stored hologram, and broaden the range of applications of the computer generated hologram, there are certain practical significance. This paper analyzes the Roman type Ⅲ coding and the original multi-channel coding theory CGH experiments verify the feasibility and detailed implementation method and experimental results are given in the text. On this basis, the design of a new dual-channel holographic method. The method is a hologram recorded spectrum of an object at the same time the complex conjugate of the spectrum information of the information, and another object, so that the reconstructed image position is different from the conventional hologram reproducing. This method also has great scalability, the original four-channel CGH is By adding different quadratic phase factor to the object, to achieve four different object information recorded at the same time, in the proposed method based on combined with the existing two-channel hologram, four-channel CGH achieved by redesigning sampling unit. The paper also proposed a reorganization of the entire plane object dual channel CGH design methods. The method is holographic design on the basis of the original multi-channel, to modify the parameters of the rectangular aperture sampling unit design allows the reproduction of two objects (part of flat objects) restructuring. The herein calculated hologram shooting to take relatively simple manner, using directly camera condensing shot manner, as long as the shrinkage made into a suitable size, we can see a clear reproduction image reproduced in the optical, suitable for a general optical laboratories using . Also improve the quality of the hologram research, given contrast images before and after optimization.

Related Dissertations

  1. Analysis of Spread Spectrum Signals Based on FRFT,TN911.6
  2. Research on Improvement of DSSS Receiver Based on Phase Domain,TN914.42
  3. Analysis of Infrared Spectral Features and Identification of Al-responsive Genes in Small Black Soybean with Aluminum Stress,S529
  4. Guide heliocentric orbit simulation Research and Improvement,O53
  5. Application of the Fractional Fourier Transform to ISAR Maneuvering Target Imaging,TN957.52
  6. Research on the Reduction of Peak to Average Power Ratio in SLM OFDM Systems,TN919.3
  7. Design of Fast Template Matching Algorithm Based on Hartley Transform,TP391.41
  8. Study on the Method of Extracting Information of Electronic Speckle Pattern Interferometry Based on the Fourier Transform and Its Application,O436.1
  9. Study on the Theoryand Experiment of Interferometric Particle Imaging,TH744.5
  10. Analyze on Measuring Error of Fourier Transform Infrared Spectrometer,TH744.1
  11. The Computation and Research of Optical Diffraction Field,O436.1
  12. Based on the time-frequency analysis of the mechanical failure of blind source separation method,TH165.3
  13. A Study of Digital Image Encrypting Fulfiled by Optical Computer-generated Hologram,TP309.7
  14. Research on Computer Generated Hologram Used to Three-Dimensional Display,O438.1
  15. Research on Application of WPC in Kitchen Furniture,TS664.02
  16. Research on the Characterization of Crosslinking of the Rubber Vulcanized by Sulfur and Its Application,TQ330.13
  17. Study on Interaction between 8Q5SAC with BSA by Spectrometry Techniques,R96
  18. Study on Multi-component Gases Quantitative Analysis Based on Ftir,O434.3
  19. Direct Numerical Simulation of Plume in Fire,X932
  20. Phase shift beamforming FPGA Implementation,TN911.7
  21. Underwater target feature extraction and line spectrum Tracking Technology,TN911.7

CLC: > Mathematical sciences and chemical > Physics > Optics > Information Optics > Holographic optical
© 2012 www.DissertationTopic.Net  Mobile