Engineering LEDS: Designing a Remote Phosphor Configuration for High Luminance Applications

Abstract

Laser-driven white light sources promise super high brightness, luminous flux and highdirectionality for solid-state lighting applications. In this thesis we use the standard Cassegrain model, but in reverse, to develop a novel LED device package that directs, and mixes all lights of the system. Utilizing LightTools® as our primary simulation software, we identified and optimized important variables inside a micro-LED configuration to show that the model device package can emit up to 360 lumens per watt all while keeping fidelity to D65 CCT and CIE color values. Next, we generated a rayfile to export results for evaluation as a light source using LucidShape. Subsequently, we analyzed the rayfile data integrated into an ADB projection system, enabling detailed assessment of the LED's optical performance in comparison to an industry standard ADB light source. We demonstrate that the prototype LED outperforms commercial LEDs in terms of luminous efficacy and projection efficiency. These findings not only show great promise for advancing solid-state lighting technology but also open up new avenues for design to address decreasing energy consumption in commercial lighting applications.