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Laboratory Measurement of Optical Properties of LEDs

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Thermal Management for LED Applications

Part of the book series: Solid State Lighting Technology and Application Series ((SSLTA,volume 2))

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Abstract

Light-emitting diodes (LEDs) are solid-state sources, where the emitted light depends on the characteristics of the semiconductor material. It is usual to call an LED a light-emitting diode prepared from inorganic semiconductors, in contrast to organic light-emitting diode (OLEDs), prepared from organic compounds. In this chapter, devoted to the measurement of optical properties, we will deal only with inorganic semiconductor LEDs.

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Notes

  1. 1.

    The unit of luminous intensity is the candela . Its definition is: candela is the SI base unit for photometry: luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 × 1012 Hz and that has a radiant intensity in that direction of 1/683.W.sr−1

    Symbol: cd = lm.sr−1.

  2. 2.

    Openings on spheres aimed at attaching external devices such as detectors are called ports.

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Author information

Authors and Affiliations

  1. Department of Electrical Engineering and Information Systems, University of Pannonia, Egyetem u. 10, 8200, Veszprém, Hungary

    János Schanda, Péter Csuti & Ferenc Szabó PhD

Authors
  1. János Schanda
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  2. Péter Csuti
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  3. Ferenc Szabó PhD
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Corresponding author

Correspondence to János Schanda .

Editor information

Editors and Affiliations

  1. Philips Research Emeritus, Nuenen, The Netherlands

    Clemens J.M. Lasance

  2. MicReD Unit Budapest XI, Infopark D, Mentor Graphics Mechanical Analysis Divi, Budapest XI, Infopark D, Hungary

    András Poppe

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Schanda, J., Csuti, P., Szabó, F. (2014). Laboratory Measurement of Optical Properties of LEDs. In: Lasance, C., Poppe, A. (eds) Thermal Management for LED Applications. Solid State Lighting Technology and Application Series, vol 2. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-5091-7_5

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  • DOI: https://doi.org/10.1007/978-1-4614-5091-7_5

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-5090-0

  • Online ISBN: 978-1-4614-5091-7

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