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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 53, Iss. 29 — Oct. 10, 2014
  • pp: H160–H164

Curved remote phosphor structure for phosphor-converted white LEDs

Shang-Ping Ying, Han-Kuei Fu, and Huang-Zong Tu  »View Author Affiliations


Applied Optics, Vol. 53, Issue 29, pp. H160-H164 (2014)
http://dx.doi.org/10.1364/AO.53.00H160


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Abstract

A phosphor-converted light emitting diode with curved remote phosphor layer was obtained in this study. By changing the geometry of the flat remote phosphor layer in a conventional remote phosphor structure, the package extraction efficiency and luminous efficacy of the curved remote phosphor structure was improved by reducing the total internal reflection at the interface of the air and phosphor layer. Ray tracing simulations were performed to analyze the package extraction efficiency of the curved remote phosphor structure. Experimental results showed that the convex remote phosphor structure had high luminous efficacy with high color uniformity. The convex remote phosphor structure would be a suitable structure if the remote phosphor structure is used in lighting applications.

© 2014 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.3670) Optical devices : Light-emitting diodes

History
Original Manuscript: May 2, 2014
Revised Manuscript: July 1, 2014
Manuscript Accepted: July 16, 2014
Published: August 29, 2014

Citation
Shang-Ping Ying, Han-Kuei Fu, and Huang-Zong Tu, "Curved remote phosphor structure for phosphor-converted white LEDs," Appl. Opt. 53, H160-H164 (2014)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-53-29-H160


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References

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