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Proceedings Paper

Hermetic SMD-type reflector cavity packaging for DUV LEDs
Author(s): Ulli Hansen; Simon Maus; Oliver Gyenge; Xiaodong Hu; Marco Queisser; Sebastian Marx
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Paper Abstract

Packaging materials usable for DUV-LEDs are limited as most organic materials are affected by DUV radiation. Packages used are TO-packages or 3D-structured ceramic housings with quartz lid. Due to DUV-LEDs radiating up to 50% of their light to the sides a significant share is lost.

This paper describes a hermetic SMD-compatible packaging approach that integrates reflectors into a quartz window to maximize the light extraction. Side emitted and otherwise wasted light is redirected towards the surface. It avoids costly 3D-structured ceramics and improves the overall thermal performance. Design choices of the reflector structures allow to tailor the radiation patterns of the LEDs.

Paper Details

Date Published: 25 February 2020
PDF: 6 pages
Proc. SPIE 11302, Light-Emitting Devices, Materials, and Applications XXIV, 113021F (25 February 2020); doi: 10.1117/12.2545026
Show Author Affiliations
Ulli Hansen, MSG Lithoglas GmbH (Germany)
Simon Maus, MSG Lithoglas GmbH (Germany)
Oliver Gyenge, MSG Lithoglas GmbH (Germany)
Xiaodong Hu, MSG Lithoglas GmbH (Germany)
Marco Queisser, Technische Univ. Berlin (Germany)
Sebastian Marx, Technische Univ. Berlin (Germany)

Published in SPIE Proceedings Vol. 11302:
Light-Emitting Devices, Materials, and Applications XXIV
Jong Kyu Kim; Michael R. Krames; Martin Strassburg, Editor(s)

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