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

Journal Article · Sun Feb 07 00:00:00 EST 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4941396· OSTI ID:22494969

Dai, Qi ^[1]; Hao, Luoxi; Lin, Yi; Cui, Zhe ^[1]

---

1. College of Architecture and Urban Planning, Tongji University, 1239 Siping Road, Shanghai 200092 (China)

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.

• OSTI ID: 22494969
• Journal Information: Journal of Applied Physics, Vol. 119, Issue 5; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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