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CIE 243:2021

Discomfort Glare in Road Lighting and Vehicle Lighting

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The topic of CIE 243:2021 is discomfort glare in the context of road and vehicle lighting. It provides an overview of the research methods, mathematical models and the variables which are considered to influence discomfort glare. The report describes the difficulties associated with the evaluation and measurement of discomfort glare and the variance in the models.

One aim of the report is to encourage further research on discomfort glare using methods informed by the proposals raised in this report. Such research will generate a greater body of credible data, thus enabling the development of a more robust model. It is intended to update this report in due course with these additional data and a revised discomfort glare model.

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CIE 251:2023

LED Reference Spectrum for Photometer Calibration

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Secure PDF English € 135.00 EUR Immediate Download
Printed Edition English € 135.00 EUR Ships in 1-2 business days
Printed Edition + PDF English € 176.00 EUR Immediate Download

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Full Description

CIE standard illuminant A was introduced in 1932 to represent typical tungsten-filament lighting in colorimetry, and for decades it has been used as a reference spectrum in photometer calibrations. In 2018, CIE published new LED illuminants in CIE 015:2018 Colorimetry, 4th Edition. Based on one of the new LED illuminants, this Technical Report publishes a recommendation for an LED reference spectrum, named "CIE reference spectrum L41", for photometer calibration that complements CIE standard illuminant A. Specifically, this document includes the tabulated data of CIE reference spectrum L41 and a quality metric for selection of white LEDs for physical LED standard sources. Information is provided about typical magnitudes of spectral mismatch errors with V()-filtered photometers in measurements of LEDs, as well as other types of light sources, when CIE reference spectrum L41 is used for photometer calibration instead of CIE standard illuminant A.

Product Details

Published: 01/01/2023

Number of Pages: 24

File Size: 1 file , 5 MB

Note: This product is unavailable in Ukraine, Russia, Belarus




 

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