Determination of optimal converting point of color temperature conversion complied with ANSI C78 377 for indoor solid-state lighting and display applications
Author(s) -
Yao-Fang Hsieh,
Mang OuYang,
Ting-Wei Huang,
Cheng-Chung Lee
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.020059
Subject(s) - luminance , computer science , point (geometry) , optics , solid state , computer vision , artificial intelligence , computer graphics (images) , physics , mathematics , engineering physics , geometry
In recent years, displays and lighting require color temperature (CT) conversion function because observers have different preferences. This paper proposes effective methods to determine the optimal converting point of CT conversion for display and lighting application. For display application, the concepts of center of gravity and isotemperature line are applied to determine the optimal converting point. The maximal enhancement of luminance between the optimal and average is 18%. For lighting application, this paper proposes two methods to determine the optimal converting point in the CT quadrangle which complies with ANSI C78. 377. The enhancement of luminance in two CT modes (5700K and 6500K) are 14.2% and 23.6%, respectively.
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