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A Luminous Efficiency-Enhanced Laser Lighting Device with a Micro-Angle Tunable Filter to Recycle Unconverted Blue
Xinrui Ding1, Ruixiang Qian1, Liang Xu2
1National & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices, South China University of Technology, Guangzhou 510640, China.
Micromachines
|October 23, 2021
Summary
A novel angle tunable tilted filter phosphor converter (ATFPC) enhances laser lighting by reducing heat and increasing brightness. This innovative design offers improved luminous flux and thermal management for hybrid laser lighting systems.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Silicone phosphor converters in laser lighting can degrade due to high energy density.
- Conventional phosphor converters (CPCs) face limitations in thermal management and luminous flux.
Purpose of the Study:
- To propose a novel angle tunable tilted filter phosphor converter (ATFPC) for hybrid laser lighting.
- To address the carbonization issue of silicone phosphor converters under high energy density.
- To improve luminous flux and heat dissipation in laser lighting devices.
Main Methods:
- Development of a micro-angle tunable tilted filter phosphor converter (ATFPC).
- Utilizing filter properties and microphosphor scattering to create dual luminous areas.
- Adjusting lighting effects by altering the tilt angle of the micro filter.
Main Results:
- The ATFPC design generates two luminous areas, offering adjustable lighting effects.
- At a 20° tilt angle, luminous flux increased by 11.5% at low concentration.
- Maximum temperature (MT) reduced by 22.8% under identical luminous flux and 6500 K correlated color temperature (CCT).
Conclusions:
- The ATFPC provides an effective solution to phosphor converter carbonization in laser lighting.
- This technology offers adjustable lighting effects and enhanced thermal management.
- ATFPCs present a viable alternative for improving luminous flux and heat dissipation in hybrid laser lighting.
