Motionless system to measure relative angular emission intensity of decaying or modulated light emitting diodes

M. Radziwon; Gerardo Hernandez-Sosa; Christoph Lackner; Helmut Sitter; Clemens Peter Simbrunner

doi:10.1063/1.4897191

Motionless system to measure relative angular emission intensity of decaying or modulated light emitting diodes

M. Radziwon
, Gerardo Hernandez-Sosa
, Christoph Lackner
, Helmut Sitter
, Clemens Peter Simbrunner

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, a measurement system is presented which enables fast and accurate determination of the relative angular emission intensity of light emitting devices, taking into account their specific features such as low light output, narrow spectral distribution, high spatial luminous intensity ratios, and small dimensions. Application of logarithmic sensors allows for fast measurement of relative emission by simple analog circuitry, while locating 18 of them on a fixed ring around the emitter allows a motionless measurement system. As a result, the proposed system can determine the relative angular emission in less than 100 ms with a resolution of 5° for symmetric emitters.

Original language	English
Article number	103103
Pages (from-to)	103103/1-4
Number of pages	4
Journal	Review of Scientific Instruments
Volume	85
Issue number	10
DOIs	https://doi.org/10.1063/1.4897191
Publication status	Published - 01 Oct 2014

Fields of science

210006 Nanotechnology
103 Physics, Astronomy
103011 Semiconductor physics
103018 Materials physics
202032 Photovoltaics
103009 Solid state physics
103017 Magnetism

JKU Focus areas

Engineering and Natural Sciences (in general)

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10.1063/1.4897191

Cite this

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title = "Motionless system to measure relative angular emission intensity of decaying or modulated light emitting diodes",

abstract = "In this paper, a measurement system is presented which enables fast and accurate determination of the relative angular emission intensity of light emitting devices, taking into account their specific features such as low light output, narrow spectral distribution, high spatial luminous intensity ratios, and small dimensions. Application of logarithmic sensors allows for fast measurement of relative emission by simple analog circuitry, while locating 18 of them on a fixed ring around the emitter allows a motionless measurement system. As a result, the proposed system can determine the relative angular emission in less than 100 ms with a resolution of 5° for symmetric emitters.",

author = "M. Radziwon and Gerardo Hernandez-Sosa and Christoph Lackner and Helmut Sitter and Simbrunner, \{Clemens Peter\}",

year = "2014",

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doi = "10.1063/1.4897191",

language = "English",

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T1 - Motionless system to measure relative angular emission intensity of decaying or modulated light emitting diodes

AU - Radziwon, M.

AU - Hernandez-Sosa, Gerardo

AU - Lackner, Christoph

AU - Sitter, Helmut

AU - Simbrunner, Clemens Peter

PY - 2014/10/1

Y1 - 2014/10/1

N2 - In this paper, a measurement system is presented which enables fast and accurate determination of the relative angular emission intensity of light emitting devices, taking into account their specific features such as low light output, narrow spectral distribution, high spatial luminous intensity ratios, and small dimensions. Application of logarithmic sensors allows for fast measurement of relative emission by simple analog circuitry, while locating 18 of them on a fixed ring around the emitter allows a motionless measurement system. As a result, the proposed system can determine the relative angular emission in less than 100 ms with a resolution of 5° for symmetric emitters.

AB - In this paper, a measurement system is presented which enables fast and accurate determination of the relative angular emission intensity of light emitting devices, taking into account their specific features such as low light output, narrow spectral distribution, high spatial luminous intensity ratios, and small dimensions. Application of logarithmic sensors allows for fast measurement of relative emission by simple analog circuitry, while locating 18 of them on a fixed ring around the emitter allows a motionless measurement system. As a result, the proposed system can determine the relative angular emission in less than 100 ms with a resolution of 5° for symmetric emitters.

UR - https://www.scopus.com/pages/publications/84907889987

U2 - 10.1063/1.4897191

DO - 10.1063/1.4897191

M3 - Article

SN - 1089-7623

VL - 85

SP - 103103/1-4

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 10

M1 - 103103

ER -

Motionless system to measure relative angular emission intensity of decaying or modulated light emitting diodes

Abstract

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