Lifetime isoflux control of LED based light sources

Janos Hegedus, Gusztav Hantos, A. Poppe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Light output performance of power LEDs is sensitive to the junction temperature and also changes with the elapsed lifetime of the device. A smart control to achieve constant light output of LED based products would be advantageous in many applications such as streetlighting, resulting e.g. in considerable power savings when forward current is reduced when ambient temperatures are lower. Also, continuous compensation of lumen depreciation during product lifetime would improve visual comfort. Both could be made while the aging phenomena of the device are slowing down. This paper introduces a new theory for LED lumen maintenance calculation and a case study with real life data is carried out to demonstrate the feasibility of the proposed method.

Original languageEnglish
Title of host publicationTHERMINIC 2017 - 23rd International Workshop on Thermal Investigations of ICs and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
Volume2017-January
ISBN (Electronic)9781538619285
DOIs
Publication statusPublished - Dec 21 2017
Event23rd International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2017 - Amsterdam, Netherlands
Duration: Sep 27 2017Sep 29 2017

Other

Other23rd International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2017
CountryNetherlands
CityAmsterdam
Period9/27/179/29/17

Fingerprint

Light emitting diodes
Light sources
Lifetime
Power Saving
Output
Depreciation
Maintenance
Aging of materials
Demonstrate
Temperature
Life
Vision
Compensation and Redress

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Modelling and Simulation
  • Electrical and Electronic Engineering

Cite this

Hegedus, J., Hantos, G., & Poppe, A. (2017). Lifetime isoflux control of LED based light sources. In THERMINIC 2017 - 23rd International Workshop on Thermal Investigations of ICs and Systems (Vol. 2017-January, pp. 1-5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/THERMINIC.2017.8233816

Lifetime isoflux control of LED based light sources. / Hegedus, Janos; Hantos, Gusztav; Poppe, A.

THERMINIC 2017 - 23rd International Workshop on Thermal Investigations of ICs and Systems. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. p. 1-5.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hegedus, J, Hantos, G & Poppe, A 2017, Lifetime isoflux control of LED based light sources. in THERMINIC 2017 - 23rd International Workshop on Thermal Investigations of ICs and Systems. vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., pp. 1-5, 23rd International Workshop on Thermal Investigations of ICs and Systems, THERMINIC 2017, Amsterdam, Netherlands, 9/27/17. https://doi.org/10.1109/THERMINIC.2017.8233816
Hegedus J, Hantos G, Poppe A. Lifetime isoflux control of LED based light sources. In THERMINIC 2017 - 23rd International Workshop on Thermal Investigations of ICs and Systems. Vol. 2017-January. Institute of Electrical and Electronics Engineers Inc. 2017. p. 1-5 https://doi.org/10.1109/THERMINIC.2017.8233816
Hegedus, Janos ; Hantos, Gusztav ; Poppe, A. / Lifetime isoflux control of LED based light sources. THERMINIC 2017 - 23rd International Workshop on Thermal Investigations of ICs and Systems. Vol. 2017-January Institute of Electrical and Electronics Engineers Inc., 2017. pp. 1-5
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