Invention:
This is a novel approach to LED device packaging by employing a reverse Cassegrain model within a micro-LED configuration. This design directs and mixes light efficiently, resulting in a high-performance LED package. The laser-driven white light source delivers high brightness, luminous flux, and high directionality for solid-state lighting applications. The technology is integrated into a standard Cassegrain optical model to develop a novel micro-LED device package that directs and mixes all lights of the system in order to optimize illumination and increase the output of the LED. The prototype LED design was optimized and found to significantly outperform existing commercial LEDs in terms of luminous efficacy, color fidelity, and projection efficiency.
Background:
Due to an increased emphasis on energy efficiency, LED researchers are actively seeking ways to increase the generation of white light per unit watt. The invention addresses the increasing demand for high-efficiency, high-brightness lighting solutions in solid-state lighting applications. Traditional LED systems often struggle with balancing high brightness, color accuracy, and energy efficiency. The proposed remote phosphor design using the reverse Cassegrain model offers a substantial improvement by optimizing light direction and mixing. This leads to higher luminous output and better color fidelity without sacrificing energy efficiency. This is important for electric vehicles looking to reduce their energy budget. Active studies are pointing towards utilizing lasers for headlamps as they are much brighter and cost about two-thirds the amount of energy when comparing to traditional sources.
Applications:
- LED lighting with further application to:
- Automotive lighting
- Display technology/projection systems
- Solid-state lighting
- Industrial and commercial lighting
- Aerospace and defense
Advantages:
- Superior light direction
- High intensity brightness
- Improved efficiency
- Enhanced color fidelity
- Prototype demonstrated superior performance compared to existing LEDs
