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Light profile uniformity in linear lighting applications


Murdoch, MJ and Seitinger, S and Roth, E and Goldstein, P and Engelke, U, Light profile uniformity in linear lighting applications, 22nd Color and Imaging Conference 2014, 3-7 November 2014, Boston, USA, pp. 222-227. ISSN 2166-9635 (2014) [Refereed Conference Paper]

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Copyright 2014 Society for Imaging Science and Technology

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LED lighting in a linear form factor can provide valuable accent lighting and vertical illumination in architectural cove and graze applications. Ideally, linear lights provide a smooth gradient of light onto a surface without disturbances along their length. However, socket shadows between discrete fixtures and multiple LEDs per fixture can lead to visible nonuniformities, often worse near the light source but mixed to uniformity further away. Perceived mixing distances in the illumination patterns of a variety of linear light sources were assessed visually, and objective metrics based on illumination measurements were developed. Accurate predictions of mixing distances are shown based on trends in CIE DE2000 color errors computed between the measured light pattern and analogous Gaussian-weighted local neighborhood regions. Effects of variations in parameters of DE threshold and neighborhood size and shape are discussed.

Item Details

Item Type:Refereed Conference Paper
Keywords:application programs, color, fixtures (tooling), light sources, lighting, mixing, pathology
Research Division:Information and Computing Sciences
Research Group:Computer vision and multimedia computation
Research Field:Image processing
Objective Division:Information and Communication Services
Objective Group:Information systems, technologies and services
Objective Field:Information systems, technologies and services not elsewhere classified
UTAS Author:Engelke, U (Dr Ulrich Engelke)
ID Code:120164
Year Published:2014
Deposited By:Information and Communication Technology
Deposited On:2017-08-11
Last Modified:2017-09-28

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