Abstract:
This research investigates the light quality and thermal management of InGaN and InGaAlP Light Emitting Diodes (LEDs) under various light regulation methods. We compare C...Show MoreMetadata
Abstract:
This research investigates the light quality and thermal management of InGaN and InGaAlP Light Emitting Diodes (LEDs) under various light regulation methods. We compare Continuous Wave (CW) and Pulse-Width Modulation (PWM) modes, examining their impacts on luminous flux, temperature, total color shift, and angular color shift. Our findings reveal that the CW mode offers higher luminous flux and reduced temperatures, while the PWM mode ensures enhanced color stability across different currents and viewing angles, especially for white LEDs; however, this stability does not extend to other LED types. From both optical and visual performance perspectives, the study emphasizes optimizing the driving current to meet regulatory requirements and ensure consistent color perception. These insights are crucial for automotive lighting design, contributing to improved regulatory compliance and aesthetic quality.
Published in: IEEE Photonics Journal ( Volume: 16, Issue: 6, December 2024)
Funding Agency:
Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, Ostrava, Czech Republic
Department of Psychology, Faculty of Arts, Palacky University Olomouc, Olomouc, Czech Republic
Department of Homologation and Photometry, Technical Center, HELLA AUTOTECHNIK NOVA, Mohelnice, Czech Republic
Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, Ostrava, Czech Republic
Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, Ostrava, Czech Republic
Department of Psychology, Faculty of Arts, Palacky University Olomouc, Olomouc, Czech Republic
Department of Homologation and Photometry, Technical Center, HELLA AUTOTECHNIK NOVA, Mohelnice, Czech Republic
Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, Ostrava, Czech Republic