歐規LED車頭燈反射杯製作材料表現之分析;Analysis of The Reflector Material Performance for ECE LED Headlamps

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/89382

Title:	歐規LED車頭燈反射杯製作材料表現之分析;Analysis of The Reflector Material Performance for ECE LED Headlamps
Authors:	鄭長坤;Zheng, Chang-Kun
Contributors:	光電科學與工程學系
Keywords:	光學設計;K-mark;材料分析;光學特性;雜散光分析;ECE E-mark;optical design;K-mark;material analysis;optical properties;stray light analysis;ECE E-mark
Date:	2022-08-16
Issue Date:	2022-10-04 11:12:42 (UTC+8)
Publisher:	國立中央大學
Abstract:	此論文中，將會先詳述歐洲的自行車法規，並分析市面上適合用於車燈設計之高功率發光二極體 (Light-emitting diode, 簡稱LEDs)。在選擇完合適的LEDs光源後，我們會以該LEDs光源進行二次光學設計，並說明其設計理念與結果。而本論文之研究重點除了探討通過歐規之自行車車燈設計外，還有製作材料之選擇對於光學表現之影響。我們針對以PC、PMMA為材料之打樣品進行分析，透過自行車法規近燈測試、物理與熱特性、公差容忍度、雜散光來源四種方式驗證，PMMA搭配蒸鍍之結果可以更貼近設計模擬時的情況，並證實反射杯會因為熱應力而產生段面彎曲，進而導致法規暗區之亮度提高，嚴重時更會產生眩光及無法通過法規。本論文最後一章將統整所有分析與經驗，並於ASAP光學模擬軟體中完整建立雜散光模型。透過本論文建立之雜散光模型，在未來進行自行車車燈光學設計時，可以同時預測實際打樣時的表現，同時達到精確、快速、節省成本等優勢。;In this thesis, the European bicycle regulations will be detailed and illustrated first. Then we will analyze the high-power light-emitting diodes (LEDs) suitable for the design of lights on the market. After selecting the appropriate LEDs light source, we will carry out the secondary optical design with the LEDs light source and explain its design concept and results. The research focuses on not only discussing the design of bicycle lights meeting European regulations but also the influence of the choice of production materials on optical performance. We analyze the samples made of PC and PMMA and verify through four methods of physical and thermal properties, tolerance, and stray light source. The results of PMMA with electroplating coating can be closer to the design simulation situation and confirm the reflector. The section surface will be bent due to thermal stress, which will increase the brightness of the dark area of the regulations, and in severe cases, it will cause glare and fail the regulations. The last chapter of this thesis will integrate all the analysis and experience and build a complete stray light model in the ASAP optical simulation software. Through the stray light model established in this thesis, the performance of actual proofing can be predicted at the same time as the optical design of bicycle lights is being carried out in the iii future, while the advantages of accuracy, speed, and cost saving can be achieved at the same time.
Appears in Collections:	[Graduate Institute of Optics and Photonics] Electronic Thesis & Dissertation

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