Laser excited stationary phosphor plate for high-power projection applications

Kenneth Li; Y. P. Chang; Andy Chen

doi:10.1117/12.2577005

5 March 2021 Laser excited stationary phosphor plate for high-power projection applications

Kenneth Li, Y. P. Chang, Andy Chen

Proceedings Volume 11706, Light-Emitting Devices, Materials, and Applications XXV; 117061P (2021) https://doi.org/10.1117/12.2577005
Event: SPIE OPTO, 2021, Online Only

Conference Poster

Abstract

Laser excited phosphor wheel light source has an upper output power limit due to the issues in heat dissipation and the high-power density at the focus on the phosphor. This paper presents a stationary phosphor plate with a compact rotating optical system such that the focused laser spot on the phosphor plate follows a circular path providing a larger effective excitation area while maintain the small etendue of a single stationary focused spot. With an 8 mm diameter circular path, a theoretical total of 1,870 W of laser power focused into a 2 mm spot can produce a total 500,000 lumens of visible light. This will make a 120,000 screen-lumen projector possible.

Conference Presentation

Citation Download Citation

Kenneth Li, Y. P. Chang, and Andy Chen "Laser excited stationary phosphor plate for high-power projection applications", Proc. SPIE 11706, Light-Emitting Devices, Materials, and Applications XXV, 117061P (5 March 2021); https://doi.org/10.1117/12.2577005

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