光學散射元件的設計與應用之研究The; Study of Optical Diffusers and Applications

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6728

Title:	光學散射元件的設計與應用之研究The;Study of Optical Diffusers and Applications
Authors:	馬仕信;Shih-Hsin Ma
Contributors:	光電科學研究所
Keywords:	光學散射元件;散射光;scattering;optical diffuser
Date:	2007-07-05
Issue Date:	2009-09-22 10:26:55 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本論文以光散射片之應用為重點，首先利用陣列透鏡具有整形光形之作用，以設計大散角及高穿透效率之散射片，以做為照明之應用。其次，我們提出了一個體積全像式之旋轉角度量測系統，產生亂相的毛玻璃與旋轉中心間由一支連桿連接，我們可藉由改變連桿半徑來調整不同的角度容忍度，其調整範圍可由幾度至百分之一度之間，實驗與理論比較亦相當之吻合。最後，我們利用毛玻璃做為體積全像亂相多工儲存之亂相產生器與角度感測元件，其在毛玻璃角度改變時的亂相特性在體積全像中多工儲存多張不同的影像來達到全光學之感測，在實驗中，我們儲存三張不同的影像，並成功地藉由此全光學之體積全像感測系統讀出旋轉角度。In this thesis, we study on the design and application of diffusers. First at all, we design a lens-array type diffuser for lighting application to perform high transmission efficiency and large diffusion angle. Then we propose a rotation measurement system with use of volume holography. In such a system, the ground glass, which is a random phase generator, is attached on a rod which is connected to a rotational stage. By adjusting the length of the rod, we can obtain various rotational selectivity of the volume holographic filter. In the simulation as well as the experiment, the rotational selectivity is from several degrees to one hundredth degrees. Finally, we apply a ground glass to be a random phase generator and rotational sensor. We store multiple images in volume holographic recording medium with random phase encoding to perform an all optical sensing. In the experiment, we store three images and successfully read out the rotation angle through the proposed system.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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