Measuring and Comparing Waveforms of Temporal Light Modulation

Anders Thorseth; Johannes Lindén; A.S.J Bergen

doi:10.25039/x46.2019.OP02

Measuring and Comparing Waveforms of Temporal Light Modulation

Anders Thorseth^*, Johannes Lindén, A.S.J Bergen

^*Corresponding author for this work

Photometric Solutions International Pty. Ltd.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

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Abstract

This paper presents a comparison of measurements of the waveforms of temporal light modulation (TLM) from 8 light sources performed by two different laboratories. The study focuses on the methodology of extracting relevant numerical differences between the measured waveforms. The methodology involves frequency matching, duration matching, selection of sampling interval, phase matching, normalization and results of the use of the methodology are presented. The results show that for some waveforms the comparison method can be used to practically explore equivalency of measurements.

Original language	English
Title of host publication	Proceedings of the 29th Quadrennial Session of the CIE
Publisher	CIE Commision Internationale de L'eclairage
Publication date	2019
Pages	7-16
DOIs	https://doi.org/10.25039/x46.2019.OP02
Publication status	Published - 2019
Event	29th Quadrennial Session of the International Commission on Illumination - Wardman Park Marriott, Washington DC, United States Duration: 14 Jun 2019 → 22 Jun 2019

Conference

Conference	29th Quadrennial Session of the International Commission on Illumination
Location	Wardman Park Marriott
Country/Territory	United States
City	Washington DC
Period	14/06/2019 → 22/06/2019

Keywords

Flicker
Temporal Light Artefacts
Signal analysis
Intercomparison
Temporal light modulation

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10.25039/x46.2019.OP02

X046 OP02Final published version, 2.34 MB

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Global SSL quality requirements and test - IEA-4E-SSL
Dam-Hansen, C. (PI), Thorseth, A. (Project Participant), Kofod, C. (Project Participant), Reinholdt, P. (Project Participant) & Corell, D. D. (Project Participant)
01/09/2019 → 01/08/2024
Project: Consultancy
PhotoLED: EMPIR 15SIB07 PhotoLED, Future photometry based on solid-state lighting products
Thorseth, A. (Project Participant), Lindén, J. (Project Participant), Dam-Hansen, C. (Project Participant) & Corell, D. D. (Project Participant)
01/09/2016 → 01/09/2019
Project: Research

File
Global Test of SSL Products - IEA-4E-SSL
Dam-Hansen, C. (Project Manager) & Thorseth, A. (Project Participant)
01/01/2015 → 01/06/2019
Project: Research

2 Membership of commitees, commissions, boards, councils, associations, organisations, or similar
1 Participating in or organising a conference
1 Talks and presentations in private or public companies and organisations
1 Conference presentations

Measurement of temporal light modulation and calculation of temporal light artifacts
Thorseth, A. (Invited speaker)
9 Feb 2021
Activity: Talks and presentations › Conference presentations

File
Measuring and Comparing Waveforms of Temporal Light Modulation
Thorseth, A. (Speaker)
17 Jun 2019 → 22 Jun 2019
Activity: Talks and presentations › Talks and presentations in private or public companies and organisations
CIE TC 1-83 Visual Aspects of Time-Modulated Lighting Systems (External organisation)
Thorseth, A. (Member)
30 Jun 2019 → 1 Jan 2022
Activity: Membership › Membership of commitees, commissions, boards, councils, associations, organisations, or similar

Cite this

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title = "Measuring and Comparing Waveforms of Temporal Light Modulation",

abstract = "This paper presents a comparison of measurements of the waveforms of temporal light modulation (TLM) from 8 light sources performed by two different laboratories. The study focuses on the methodology of extracting relevant numerical differences between the measured waveforms. The methodology involves frequency matching, duration matching, selection of sampling interval, phase matching, normalization and results of the use of the methodology are presented. The results show that for some waveforms the comparison method can be used to practically explore equivalency of measurements.",

keywords = "Flicker, Temporal Light Artefacts, Signal analysis, Intercomparison, Temporal light modulation",

author = "Anders Thorseth and Johannes Lind{\'e}n and A.S.J Bergen",

year = "2019",

doi = "10.25039/x46.2019.OP02",

language = "English",

pages = "7--16",

booktitle = "Proceedings of the 29th Quadrennial Session of the CIE",

publisher = "CIE Commision Internationale de L'eclairage ",

note = "29th Quadrennial Session of the International Commission on Illumination ; Conference date: 14-06-2019 Through 22-06-2019",

}

Thorseth, A, Lindén, J & Bergen, ASJ 2019, Measuring and Comparing Waveforms of Temporal Light Modulation. in Proceedings of the 29th Quadrennial Session of the CIE. CIE Commision Internationale de L'eclairage , pp. 7-16, 29th Quadrennial Session of the International Commission on Illumination , Washington DC, District of Columbia, United States, 14/06/2019. https://doi.org/10.25039/x46.2019.OP02

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AU - Lindén, Johannes

AU - Bergen, A.S.J

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AB - This paper presents a comparison of measurements of the waveforms of temporal light modulation (TLM) from 8 light sources performed by two different laboratories. The study focuses on the methodology of extracting relevant numerical differences between the measured waveforms. The methodology involves frequency matching, duration matching, selection of sampling interval, phase matching, normalization and results of the use of the methodology are presented. The results show that for some waveforms the comparison method can be used to practically explore equivalency of measurements.

KW - Flicker

KW - Temporal Light Artefacts

KW - Signal analysis

KW - Intercomparison

KW - Temporal light modulation

U2 - 10.25039/x46.2019.OP02

DO - 10.25039/x46.2019.OP02

M3 - Article in proceedings

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EP - 16

BT - Proceedings of the 29th Quadrennial Session of the CIE

PB - CIE Commision Internationale de L'eclairage

T2 - 29th Quadrennial Session of the International Commission on Illumination

Y2 - 14 June 2019 through 22 June 2019

ER -

Measuring and Comparing Waveforms of Temporal Light Modulation

Abstract

Conference

Keywords

Access to Document

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Projects

Global SSL quality requirements and test - IEA-4E-SSL

PhotoLED: EMPIR 15SIB07 PhotoLED, Future photometry based on solid-state lighting products

Global Test of SSL Products - IEA-4E-SSL

Activities

Measurement of temporal light modulation and calculation of temporal light artifacts

Measuring and Comparing Waveforms of Temporal Light Modulation

CIE TC 1-83 Visual Aspects of Time-Modulated Lighting Systems (External organisation)

Cite this