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研究生: 卓粳佶
Cho, Keng-Chi
論文名稱: 適應性光學於視覺科學之初探
Preliminary Study of Adaptive Optics for Vision Science
指導教授: 陳顯禎
Chen, Shean-Jen
學位類別: 碩士
Master
系所名稱: 工學院 - 工程科學系
Department of Engineering Science
論文出版年: 2006
畢業學年度: 94
語文別: 中文
論文頁數: 58
中文關鍵詞: 視網膜影像液晶元件波前感測移相干涉術適應性光學
外文關鍵詞: Adaptive optics, Liquid crystal device, Phase-shift interferometry, Wave front sensor
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  •   本論文所描述的實驗與架構,在於藉著本實驗室已有適應性光學的成果與經驗,建立一套應用於視覺科學的系統,主要在於眼底或視網膜影像技術的研發。之前實驗室已發展出具液晶(liquid crystal device, LCD)移相干涉術(phase-shift interferometry, PSI)之干涉儀來動態偵測光波前的適應性光學系統,可即時地修正因擾動所造成之像差。運用相同的移相干涉技術,本論文規劃一個新的系統架構包含了空間光相位調變器(spatial light modulator,SLM)之波前修正器、液晶(liquid crystal device,LCD)移相干涉術(phase-shift interferometry,PSI)之波前感測器、及以個人電腦為平台之即時回饋控制系統等相關技術。目前已於實驗室完成光路系統的架設與初步測試,其中主要元件的部份例如液晶元件驅動電路與16x16光二極體陣列的後級放大電路也已完成;另外空間光相位調變器的驅動器已設計確立整體架構、而作為控制器的x-PC target相關的軟硬體也大致測試完畢。

      The mentioned vision science experiment and optical setup in this thesis are employed in order to develop a system of adaptive optics. Our area of focus is imaging the fundus or the retina. We developed an adaptive optics system (AOS) based on a liquid crystal phase-shift interferometer (PSI). This system can real-time correct aberration induced by disturbance. To utilize the same phase-shift interference technology, we designed a new system which includes a spatial light modulator (SLM, a wave front corrector), a liquid crystal phase-shift interferometer (wave front sensor), and a PC based real time feedback control system. At present, we have finished both the optical setup and preliminary testing. The key components, for instance, the driver of liquid crystal device and the amplifier circuit of 16x16 photodiode array have been done. Furthermore, the overall dataflow of driver’s circuit in the spatial light modulator has been designed and the related software/hardware of the xPC target controller also have approximately finished testing.

    第一章序論 1 1-1前言 1 1-2文獻回顧 2 1-3研究目的 3 1-4論文架構 4 第二章適應性光學應用於雷射聚焦 6 2-1適應性光學系統架構 6 2-2波前感測器 9 2-2-1移相干涉術 9 2-2-2液晶相位調變器 11 2-2-3移相之步階電壓尋找與動態反應 13 2-3可調變聚焦鏡 17 2-4 DSP控制器 18 2-5實驗結果 20 第三章眼球光學 31 3-1眼球結構 31 3-2視網膜與相關疾病 34 3-3眼球像差 36 第四章適應性光學應用於視覺科學 39 4-1應用於視覺科學的系統架構 39 4-2波前感測器 45 4-3空間光相位調變器 46 4-4系統控制 49 4-5系統測試 51 第五章結論 54 參考文獻 55

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