File(s) under permanent embargo
Light profile uniformity in linear lighting applications
conference contribution
posted on 2023-05-23, 12:30 authored by Murdoch, MJ, Seitinger, S, Roth, E, Goldstein, P, Engelke, ULED 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.
History
Publication title
22nd Color and Imaging Conference 2014Pagination
222-227ISSN
2166-9635Department/School
School of EngineeringPublisher
Society for Imaging Science and TechnologyPlace of publication
United StatesEvent title
22nd Color and Imaging Conference 2014Event Venue
Boston, USADate of Event (Start Date)
2014-11-03Date of Event (End Date)
2014-11-07Rights statement
Copyright 2014 Society for Imaging Science and TechnologyRepository Status
- Restricted