影像黑白化之圓錐型複合全像術;achromatic image conical-type holographic steregram

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/75864

Title:	影像黑白化之圓錐型複合全像術;achromatic image conical-type holographic steregram
Authors:	郭馥萱;Fu-Shiuan, Guo
Contributors:	光電科學與工程學系
Keywords:	全像;黑白;圓錐
Date:	2018-01-19
Issue Date:	2018-04-13 11:00:44 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文主要的目的是討論如何製作出可環繞觀賞的影像黑白化之圓錐型複合全像，並配合光源調整影像黑白化的程度與討論非成像面影像模糊程度。為了在觀賞視窗上看到黑白化的影像，採用擴展視窗的方式，製作全像片過程中使用了母、子片的翻拍技術，在製作母片的物光系統中使用毛玻璃達到擴展觀賞視窗的目的，讓不同波長形成的觀賞視窗藉由擴展後相互重疊。製作子片時，在母片上進行分區，利用部分重建母片的方式重建部分的觀賞視窗，並調整部分觀賞視窗的曝光能量，以此達到控制在黑白化的觀賞視窗上所接受到不同波長繞射光的繞射效率，為了使影像趨近於白色由此方式調整紅、綠、藍光的光強。由於影像記錄於圓錐上的底片面並非成像面，因此需探討重建影像時像平面上像點擴散的狀況確保觀看的影像不會產生模糊。使用雙步驟的拍攝方式，藉由擴展觀賞視窗的方法製作出影像黑白化的觀賞視窗，在子片的拍攝過程分別控制紅、綠、藍光波長的繞射效率，使最後影像產生黑白化的效果。 ;In this study, we discuss how to create a 360-degree viewable achromatic image conical-type holographic stereogram, and the achromatic effect can be controlled to reconstruction white light. Moreover, we discuss blurry degree of the non-imaging plane. To produce an achromatic effect in viewing window, we will extend the viewing window. Use the two-step holographic produce to achieve our purpose. In the first step, we will set a diffuser in the optic system to process master hologram. Each wavelength has its viewing window, and due to the extended viewing window, there will have an overlapping range. In the second step, we will divide the area in master hologram, and reconstruct part of master hologram to reconstruct part of the extended viewing window. The diffraction efficiency of each partial extended viewing window can be controlled by exposure energy. As the result, we control the intensity of red, green, blue diffraction light to make the final image’s color is very close to white. Because the hologram record image information on the conical surface that is not image plane. Consequently, we need to discuss image point diffusion on the image plane by image reconstruction to confirm image not blurry. Use the two-step holographic process, in which we can observe achromatic image by extended viewing window. And due to the diffraction efficiency of red, green, blue wavelength can be controlled. Finally, we can control the color mixing to make achromatic effect obvious.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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