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研究生:郭勇助
研究生(外文):Yung-Chu Kuo
論文名稱:雜散光分析與抑制
論文名稱(外文):Stray Light Analysis and Suppression
指導教授:陳昭先陳昭先引用關係
指導教授(外文):Chao-Hsien Chen
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:機械與精密工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2009
畢業學年度:97
語文別:中文
論文頁數:92
中文關鍵詞:雜散光光機系統雙向性散射分布函數
外文關鍵詞:Stray lightopto-mechanicalBSDF
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雜散光為光學系統中不需要或是額外衍生出來的光線。雜散光的產生會降低對比及成像品質,嚴重關係到系統的成敗,因此抑制雜散光是設計光學系統相當重要的課題。雖然雜散光無法完全抑制,但適當的光機設計可以有效的抑制雜散光在合理範圍。
本研究主要討論雜散光對光學系統之影響,以夜視鏡作為研究目標。首先探討雜散光可能產生的部位,其次探討鏡片與鏡片之間折反射是否有產生鬼影之現象,最後在探討不同表面性質所產生的散射特性。研究中發現,軟體內部所提供的散射特性有限,與實際遇到表面性質有所不同。若要與實際相符需要透過儀器測量出其BSDF之能量,再將測量出能量輸入軟體中,以達到真實模擬情況,讓所做的實驗更加準確。夜視鏡所產生的雜散光現象與如何解決雜散光之問題,配合業界資訊再搭配軟體模擬真實情況加以改善夜視鏡級監視細統。
Stray light is the unfunctioned light in optical systems which reduces the image contrast and optical quality. Controlling stray light is essential to the success of designing optical systems. Stray light is always exists in optical systems, but we can reduce it to a reasonable order by using suitable opto-mechanical designs.
In this paper, we first analyze the stray light of a night vision system of which the construction data are provided by the manufacturer and then identify the critical and illuminated surfaces as well as the stray light paths. Finally, the stray light is well reduced by using blocking apertures and blacking the edges of some important lens elements.
第一章 緒論...................................................................................................................1
1.1 研究動機............................................................................................................1
1.2 文獻回顧............................................................................................................2
1.3 研究方法與目的................................................................................................7
1.4 論文架構............................................................................................................8

第二章 雜散光基礎理論...............................................................................................9
2.1 何謂雜散光........................................................................................................9
2.2 雜散光的種類....................................................................................................9
2.2.1 光源直射...............................................................................................9
2.2.2 鬼影.....................................................................................................10
2.2.3 散射雜光.............................................................................................11
2.2.4 其它.....................................................................................................12
2.3 雜散光分析......................................................................................................14
2.4 雜散光抑制......................................................................................................16
2.5 BSDF介紹........................................................................................................20

第三章 散射模型.........................................................................................................24
3.1 Lambertian........................................................................................................25
3.2 Harvey-Shack...................................................................................................26
3.3 ABg...................................................................................................................28
3.4 Phong................................................................................................................30
3.5 Flat Black Paint................................................................................................32
3.6 Mie....................................................................................................................32
3.7 Tabulated BSDF................................................................................................35
3.8 Polynomial........................................................................................................37
3.9 Tabulates PSD...................................................................................................39
3.10 K-Correlation..................................................................................................41

第四章 雜散光模擬分析與抑制.................................................................................42
4.1 雜散光問題......................................................................................................42
4.2 夜視鏡規格......................................................................................................43
4.3 夜視鏡之鏡片分析………………………......................................................49
4.4 機構之散射模擬…..........................................................................................55
4.5 鏡片邊緣之散射模擬…..................................................................................56
4.6 夜視鏡系統模擬…..........................................................................................61
4.7 夜視鏡之改善…..............................................................................................69

第五章 結論與未來展望.............................................................................................72
參考文獻.........................................................................................................74
[1] 陳昭先、曹孝岳,2000,「發射接收鏡組結案報告(中科院雷射測距系統) 」,工研院光電所.
[2] 陳昭先、曹孝岳,2000,「高解析度投影鏡頭設計技術報告」,工研院光電所.
[3] Chao-Hsien Chen, Wei Shen and Fang-Chuan Ho,2002, “Compact design of the high-resolution projector using reflective LCD panel” Projection Displays VIII, Proceedings of SPIE Volume 4657, pp.77-84.
[4] C.H.Chen, S.C.Chung, W.Shen, J.C.Yoo, G.S.Ho,T.J.Chen, K.W.Jain and C.R.Ou ,2001,“Stray Light Analysis in the LCoS Projection Display System” Microdisplay .
[5] C.R.Ou, J.S.Fan and C.H.Chen, 2001, “The Optical Effects on the Thermal Deformation of Cover-Glass for LCOS Panel in Projection System”, ASIA Display /IDW Proceeding LADP-1, pp.1319-pp.1321, Nagoya, Japan.
[6] 何承舫、黃鼎名、張勝聰,2006, “光學系統中的雜散光與抑制”,科儀新知第二十七卷第四期.
[7]陳昭先,2007,“光學系統與數位鏡頭設計”,研討會,國立高雄應用科技大學.
[8] Warren J. Smith,2000, “Modern Optical Engineering”,3rd ed., McGraw-Hill.
[9] John C. Stover, 1995, “Optical Scattering Measurement and Analysis”, second edition.
[10] BRO, 2002, “Stray Analysis Method”, ASAP course.
[11] Ahmad, Anees, 1997, “Handbook of optomechanical engineering / editor-in-chief”, CRC Press.
[12] 黃忠偉、陳怡永、楊才賢、林宗彥,2008, “光學設計達人必修的九堂課”,五南。
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