Maximum spectral luminous efficacy of white light

@article{Murphy2012MaximumSL,
  title={Maximum spectral luminous efficacy of white light},
  author={Thomas W Murphy},
  journal={Journal of Applied Physics},
  year={2012},
  volume={111},
  pages={104909}
}
  • T. W. Murphy
  • Published 29 May 2012
  • Physics
  • Journal of Applied Physics
As lighting efficiency improves, it is useful to understand the theoretical limits to luminous efficacy for light that we perceive as white. Independent of the efficiency with which photons are generated, there exists a spectrally imposed limit to the luminous efficacy of any source of photons. We find that, depending on the acceptable bandpass and—to a lesser extent—the color temperature of the light, the ideal white light source achieves a spectral luminous efficacy of 250–370 lm/W. This is… 

Figures and Tables from this paper

Light spectrum for maximum luminous efficacy of radiation and high color quality

To date, many studies on the optimization of the spectral power distributions (SPDs) have been conducted to maximize the energy performance and color quality of white light-emitting diodes (LEDs).

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

Luminescent Metamaterials for Solid State Lighting

The invention of the efficient blue Light Emitting Diode (LED) 1 has led to the Solid State Lighting (SSL) revolution that will replace inefficient incandescent and fluorescent lamps by much more

Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes

In this work the effect of prevailing electrical and thermal conditions on the luminous of efficacy of radiation and wall-plug efficiency of phosphor-converted white LEDs is discussed. For this

Effects of electro-thermal conditions on luminous efficacies of phosphor-converted white light emitting diodes

  • S. K R
  • Engineering
    2018 International Conference on Computational Techniques, Electronics and Mechanical Systems (CTEMS)
  • 2018
In this work the effect of prevailing electrical and thermal conditions on the luminous of efficacy of radiation and wall-plug efficiency of phosphor-converted white LEDs is discussed. For this

Combined selective emitter and filter for high performance incandescent lighting

The efficiency of incandescent light bulbs (ILBs) is inherently low due to the dominant emission at infrared wavelengths, diminishing its popularity today. ILBs with cold-side filters that transmit

High performance incandescent lighting by Arny

The efficiency of incandescent light bulbs (ILBs) is inherently very low due to significant emission at infrared wavelengths, diminishing its market share rapidly. ILBs with cold-side filters that

Optimal ways of colour mixing for high‐quality white‐light LED sources

Optimization of colour mixing in white‐light sources based on light‐emitting diodes (LEDs) only and those utilizing partial light conversion by a yellow YAG:Ce3+ phosphor is carried out by

Photobiology eye safety for horticultural LED lighting: Transmittance performance of eyewear protection using high-irradiant monochromatic LEDs

Consumer and workers using horticultural lighting can select welding goggles or polarized glasses, to limit the possible ocular impact of the high irradiance of monochromatic light in electrical lighting environment.
...

References

SHOWING 1-10 OF 18 REFERENCES

Performance characteristics of white light sources consisting of multiple light-emitting diodes

The performance characteristics of white light sources based on a multiple-LED approach, in particular dichromatic and trichromatic sources are analyzed in detail. Figures of merit such as the

White light emitting diodes with super-high luminous efficacy

We fabricated three types of high luminous efficacy white light emitting diodes (LEDs). The first was a white LED with a high luminous efficacy (ηL) of 249 lm W−1 and a high luminous flux (ϕv) of

Improvement of Luminous Efficiency in White Light Emitting Diodes by Reducing a Forward-bias Voltage

We fabricated three types of high luminous efficiency white light emitting diodes (LEDs). The first is the white LED, which had a high luminous efficiency (ηL) of 161 lm/W with the high luminous flux

Theoretical and experimental luminous characteristics of white LEDs composed of multiphosphors and near-UV LED for lighting

We have performed theoretical studies on the luminous characeristics of white LED light source which composed of multi phosphors and near ultraviolet (UV) LED for general lighting. White LED source

Limits on the maximum attainable efficiency for solid-state lighting

Artificial lighting for general illumination purposes accounts for over 8% of global primary energy consumption. However, the traditional lighting technologies in use today, i.e., incandescent,

Estimation of Radiation Luminous Efficacy

Luminous efficacy of LED sources are theoretically estimated by considering ideal and typical spectral responsivity values of the measuring photometer and radiometer. The luminous efficacies of red

An Experimental Determination of the Maximum Spectral Luminous Efficacy of Radiation

An experimental determination of the maximum spectral luminous efficacy of radiation has been made. The method uses luminous intensity standard lamps calibrated in "World mean candela 1952",

Colorimetric and photometric properties of a 2° fundamental observer

New and extended tables which are intended to be complementary to, rather than to compete with, the old CIE tables are given.

Color research and application. Information for contributors

Proc. SPIE 6841

  • Proc. SPIE 6841
  • 2007