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Title: Spectral optimization simulation of white light based on the photopic eye-sensitivity curve

Spectral optimization simulation of white light is studied to boost maximum attainable luminous efficacy of radiation at high color-rendering index (CRI) and various color temperatures. The photopic eye-sensitivity curve V(λ) is utilized as the dominant portion of white light spectra. Emission spectra of a blue InGaN light-emitting diode (LED) and a red AlInGaP LED are added to the spectrum of V(λ) to match white color coordinates. It is demonstrated that at the condition of color temperature from 2500 K to 6500 K and CRI above 90, such white sources can achieve spectral efficacy of 330–390 lm/W, which is higher than the previously reported theoretical maximum values. We show that this eye-sensitivity-based approach also has advantages on component energy conversion efficiency compared with previously reported optimization solutions.
Authors:
 [1] ;  [2] ;  [3] ; ; ;  [1] ;  [3]
  1. College of Architecture and Urban Planning, Tongji University, 1239 Siping Road, Shanghai 200092 (China)
  2. (China)
  3. (Tongji University), Ministry of Education, 1239 Siping Road, Shanghai 200092 (China)
Publication Date:
OSTI Identifier:
22494969
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 119; Journal Issue: 5; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COLOR; DIAGRAMS; EFFICIENCY; EMISSION SPECTRA; ENERGY CONVERSION; LIGHT EMITTING DIODES; OPTIMIZATION; SENSITIVITY; SIMULATION; TEMPERATURE RANGE 1000-4000 K; TEMPERATURE RANGE OVER 4000 K; VISIBLE RADIATION