Poster + Presentation + Paper
5 March 2021 Laser excited stationary phosphor plate for high-power projection applications
Author Affiliations +
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
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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KEYWORDS
Projection systems

High power lasers

Laser applications

Ceramics

Crystals

Glasses

Laser safety

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