歐規之高對比度近遠燈設計與雜散光分析;Optical Design and Stray-light Analysis for High-contrast low/high Beam Meeting Various Regulations

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Title:	歐規之高對比度近遠燈設計與雜散光分析;Optical Design and Stray-light Analysis for High-contrast low/high Beam Meeting Various Regulations
Authors:	謝承諺;Hsieh, Cheng-Yan
Contributors:	光電科學與工程學系
Keywords:	光學設計;近光燈;遠光燈;單一光學反光杯;K-mark;E-mark
Date:	2021-08-16
Issue Date:	2021-12-07 11:50:53 (UTC+8)
Publisher:	國立中央大學
Abstract:	本論文中，主要以通過德國自行車近遠燈法規 (StVZO 22A TA23,K-mark) 及聯合國歐洲經濟委員會 (the United Nations Economic Commission for Europe, UNECE) 制定的Regulation No. 113 Revision 3 Class B機車近遠燈法規作為設計目標。首先，我們針對多款市售高功率車規白光LED光源來分析其光學特性，在考量其光學特性及成本後，選定最符合需求的LED光源，並以達到市售同級最小的燈具尺寸進行二次光學設計。本文並探討二次光學機構造成投射光型明暗對比度不佳，致使暗區能量過高而無法通過法規的原因。如何在設計之初建立引起雜散光的結構模型，以及優化二次光學機構以抑制雜散光為本篇論文之研究重點。本設計雖然為單一反光鏡，但透過光場管理，針對近遠燈光源進行多區塊反光杯設計，使其能同時通過K-mark以及ECE class B之近遠燈法規規範，提供高對比度的光型，同時提供發散角約30度的道路照明。 ;In this thesis, we aim to design a white LED head lamp to meet Germany regulation of StVZO 22A TA23 (so called K-mark), and Regultaion No. 113 Revision 3 Class B (by the United Nations Economic Commission for Europe, UNECE). At first, we compare among commercial vehicle headlamp with LEDs to analyze their optical properties. In order to design a high-contrast low/high beam headlamp in single optical reflector, we start from checking several high-quality power white LED and analyze the optical properties, and then select the most appropriate one with considering the performance and cost. In the meantime, we discuss the secondary optical mechanism between darkzone and the projecting light pattern area that cause the cut-off line to be blurrier than we designed cause darkzone area of illuminance too high would fail the regulation. Additionally, we discuss how to establish a stray light model design in the beginning, and then modify the secondary optical mechanism to suppress the stray light. Although this design is a single reflector, by using light field management, we can aim the certain area of reflector for integrated low/high beams meet multiple regulations. Also, an additional benefit is providing high-contrast light parttetn for the rider, and also provide ground illumination with a divergent beam of 30 degrees at the same time.
Appears in Collections:	[光電科學研究所] 博碩士論文

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