長距離固態照明投射燈之橫向明視度之研究

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姓名

張宏瑋(Hung-Wei Chang) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

長距離固態照明投射燈之橫向明視度之研究
(Study of Transverse Brightness of Long-Distance Solid-State Spot Light)

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至系統瀏覽論文 (2028-8-1以後開放)

摘要(中)

本研究探討長距離固態照明投射燈的橫向亮度。在此選用LED固態光源，因其具有節能、長壽命和高光效等優點，廣泛應用於室內和室外照明領域的光源。本研究首先對LED特性進行了分析。並通過模擬和優化，我們以中場擬和法製作其光源模型，並由此光源挑選出適合的光杯及透鏡製作遠距離投射燈，在此條件下單一光學模組以7.8W驅動下，照射角度之半高全寬為1.45°，投射距離可達 1,181 m ，整組投射燈採取4×4陣列方式排列，其照射角度之半高全寬為1.71°，投射距離可達 4.17 km，以25組投射燈達成投射距離20km。接下來，我們將投射燈以不同橫向數量排列及不同仰角進行記錄，並紀錄投射燈的灰階分布，並根據測量結果進行了數據分析和比較。實驗結果表明，在相同投射距離下，不同橫向擺放數量將會影響近距離視覺效果而遠距離則無差異。綜上所述，本研究的結果表現，通過改變投影燈的擺放，不會影響其遠距離的視覺對比度。而若將投射燈應用在燈塔方面與台灣光強度最強燈塔鵝鑾鼻燈塔比較，光強度為2.22倍，根據IALA 規範可以投射48海里。

摘要(英)

This study explores the lateral luminance of long-distance solid-state lighting projectors. LED solid-state light sources were chosen for their advantages in energy efficiency, long lifespan, and high luminous efficacy, making them widely used in indoor and outdoor lighting applications. The characteristics of LEDs were initially analyzed. Through simulation and optimization, we constructed their light source model using the center field fitting method. Based on this model, suitable reflectors and lenses were chosen to create long-distance projection lamps. Under these conditions, a single optical module driven at 7.8W achieved a half-power beam width (HPBW) of 1.45° for the illumination angle, enabling a projection distance of up to 1,181 meters. By arranging the projection lamps in a 4x4 array, the HPBW of the illumination angle was 1.71°, resulting in a projection distance of 4.17 kilometers. A combination of 25 sets of projection lamps achieved a remarkable projection distance of 20 kilometers.
Subsequently, we recorded the arrangement of projection lamps with different lateral quantities and varying elevation angles. We also documented the grayscale distribution of the projection lamps. Data analysis and comparisons were performed based on the measurement results. The experimental outcomes revealed that, under the same projection distance, different lateral arrangements influenced the visual effect at close distances while showing no discernible difference at longer distances.
In conclusion, the results of this study demonstrate that altering the arrangement of projection lamps does not impact the visual contrast at long distances. Moreover, when applying projection lamps in lighthouse scenarios and comparing them with Taiwan′s most intense lighthouse, the Guishan Island Lighthouse, the light intensity was amplified by a factor of 2.22. Additionally, in accordance with IALA regulations, it can project up to 48 nautical miles.

關鍵字(中)

★ 中場擬和法
★ 投射燈
★ 投射距離
★ 光源模型
★ 燈塔

關鍵字(英)

★ pcW-LEDs

論文目次

摘要 I
Abstract II
誌謝 II
目錄 VI
圖目錄 IX
表目錄 XVII
第一章緒論 1
1-1 研究背景 1
1-2 研究動機與目的 4
1-3 論文大綱 7
第二章基礎原理 8
2-1 基本原理 8
2-1-1 反射定律 9
2-1-2 折射定律 10
2-2 光度學 11
2-2-1 視效函數 12
2-2-2 光度計量與單位 14
2-3 光展量 19
2-4 中場擬合法 22
第三章光學設計與實踐 24
3-1 投射光形之照明指標 25
3-2 目標與初階光學設計 27
3-3 LED 光源特性分析與探討 29
3-4光源模型的建立 36
3-5 遠距離投射照明設計與結果 41
3-6 投射燈量測與分析 46
3-7 4×4陣列燈具驗證 54
3-8 20 km投射燈驗證 61
第四章不同基數橫向排投射燈之明視度影響探討 68
4-1 實驗架構 69
4-2 近距離不同橫向投射燈數量與明視度關係 75
4-3 遠距離不同橫向投射燈數量與明視度關係 86
4-4 適用於港口燈塔分析 95
4-5 討論 97
第五章結論 98
參考文獻 100

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指導教授

孫慶成(Ching-Cherng Sun)

審核日期

2023-8-15

推文