Single Headlamp with Low- and High-Beam Light
Generally, automobiles are typically equipped with separate headlamp lanterns for generating low- and high-beam light. Compared with separate headlamp lanterns, a single headlamp producing both low- and high-beam light can be more compact and have less mechanical complexity. The single headlamp stru...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/8/2/32 |
| _version_ | 1797406673919279104 |
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| author | Shang-Ping Ying Bing-Mau Chen Han-Kuei Fu Chen-Yu Yeh |
| author_facet | Shang-Ping Ying Bing-Mau Chen Han-Kuei Fu Chen-Yu Yeh |
| author_sort | Shang-Ping Ying |
| collection | DOAJ |
| description | Generally, automobiles are typically equipped with separate headlamp lanterns for generating low- and high-beam light. Compared with separate headlamp lanterns, a single headlamp producing both low- and high-beam light can be more compact and have less mechanical complexity. The single headlamp structure has become a main emphasis of research that manufacturers will continue to focus great efforts on in the future. A novel design of a single headlamp generating both low- and high-beam light is proposed in this study. The proposed headlamp consists of a compound ellipsoidal reflector, a baffle plate, a condenser lens, and LED array devices generating low- and high-beam light. The compound ellipsoidal reflector comprises a primary ellipsoidal reflector for generating low-beam light and a secondary ellipsoidal reflector for generating high-beam light. Monte Carlo ray tracing simulations were performed to confirm the optical characteristics of the proposed design. A prototype of the proposed headlamp was also fabricated and assembled to verify the design’s effectiveness. The simulated and measured illuminance distributions of the low-beam and high-beam light had the desired light patterns. Moreover, all the simulated and measured illuminances of each point and line met the ECE R112 regulation for low-beam and high-beam light. The proposed headlamp in this study is feasible for the application of single headlamp generating both low- and high-beam light. |
| first_indexed | 2024-03-09T03:30:03Z |
| format | Article |
| id | doaj.art-ef782242e9574747873fc03437b12c13 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T03:30:03Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-ef782242e9574747873fc03437b12c132023-12-03T14:57:27ZengMDPI AGPhotonics2304-67322021-01-01823210.3390/photonics8020032Single Headlamp with Low- and High-Beam LightShang-Ping Ying0Bing-Mau Chen1Han-Kuei Fu2Chen-Yu Yeh3Department of Electro-Optical Engineering, Minghsin University of Science & Technology, Hsinchu 30401, TaiwanDepartment of Electro-Optical Engineering, Minghsin University of Science & Technology, Hsinchu 30401, TaiwanElectronic and Optoelectronic System Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, TaiwanDepartment of Electro-Optical Engineering, Minghsin University of Science & Technology, Hsinchu 30401, TaiwanGenerally, automobiles are typically equipped with separate headlamp lanterns for generating low- and high-beam light. Compared with separate headlamp lanterns, a single headlamp producing both low- and high-beam light can be more compact and have less mechanical complexity. The single headlamp structure has become a main emphasis of research that manufacturers will continue to focus great efforts on in the future. A novel design of a single headlamp generating both low- and high-beam light is proposed in this study. The proposed headlamp consists of a compound ellipsoidal reflector, a baffle plate, a condenser lens, and LED array devices generating low- and high-beam light. The compound ellipsoidal reflector comprises a primary ellipsoidal reflector for generating low-beam light and a secondary ellipsoidal reflector for generating high-beam light. Monte Carlo ray tracing simulations were performed to confirm the optical characteristics of the proposed design. A prototype of the proposed headlamp was also fabricated and assembled to verify the design’s effectiveness. The simulated and measured illuminance distributions of the low-beam and high-beam light had the desired light patterns. Moreover, all the simulated and measured illuminances of each point and line met the ECE R112 regulation for low-beam and high-beam light. The proposed headlamp in this study is feasible for the application of single headlamp generating both low- and high-beam light.https://www.mdpi.com/2304-6732/8/2/32optical design and simulationlight-emitting diodevehicle lighting |
| spellingShingle | Shang-Ping Ying Bing-Mau Chen Han-Kuei Fu Chen-Yu Yeh Single Headlamp with Low- and High-Beam Light Photonics optical design and simulation light-emitting diode vehicle lighting |
| title | Single Headlamp with Low- and High-Beam Light |
| title_full | Single Headlamp with Low- and High-Beam Light |
| title_fullStr | Single Headlamp with Low- and High-Beam Light |
| title_full_unstemmed | Single Headlamp with Low- and High-Beam Light |
| title_short | Single Headlamp with Low- and High-Beam Light |
| title_sort | single headlamp with low and high beam light |
| topic | optical design and simulation light-emitting diode vehicle lighting |
| url | https://www.mdpi.com/2304-6732/8/2/32 |
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