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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68642

    Title: 共軛重建產生收斂物波之成像面圓盤型複合全像術
    Authors: 洪偉晧;Hong,Wei-hao
    Contributors: 照明與顯示科技研究所
    Keywords: 全像術;發散物光;複合全像術;圓盤型
    Date: 2015-07-28
    Issue Date: 2015-09-23 13:57:06 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本論文主要的目的是改善發散物光圓盤複合全像所造成的重建影像形變以及影像多波段的問題,並且維持其所帶來的高放大倍率的優點。
    ;We solve the problems that the occur when the diverging object beam is utiligzd in fabrication of disk-type multiplex hologram. With diverged object wave, the reconstructed image is of rainbow color form top to bottom with severe distortion.
      Keeping the advantage of ligh magnification ratio using diverging object beam,we reform our reference beam form divergent convergent form. The converging reference wave is converged into a point on the symmetry axis of and behind the hologram. In the image reconstruction, a diverging reference wave brings out all the 2D images, each be observed at certain location. Hence, the observed image at the designated location is no longer generated from a large set of individual holograms and the image distortion is greatly reduced. Because there is a viewing point for each 2D image, the observed image is quite single-colored form top to bottom. In the holographic process, we adopt copying technique to not only increase the diffraction efficiency of the hologram but also enlarge the radius of the hologram disk. This solves the problems of low diffraction efficiency and small radius of the hologram disk occured when the converging object beam is utilized to record the hologram.
      Finally, we use the LCD from the flashlight to reconstructed image and observe its variation when the viewing angle and the observation distance is changed. We also used MATLAB program to theoretically simulate the holographic process and compare the result with that from the experiment.
    Appears in Collections:[照明與顯示科技研究所 ] 博碩士論文

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