Color distribution from multicolor LED arrays.

@article{Moreno2007ColorDF,
  title={Color distribution from multicolor LED arrays.},
  author={Ivan Moreno and Ulises Contreras},
  journal={Optics express},
  year={2007},
  volume={15 6},
  pages={
          3607-18
        }
}
We describe a fully-analytical, simple yet sufficiently accurate method to compute the color pattern of the light emitted from multicolor light-emitting diode (LED) assemblies. Spatial distributions for both color variation and correlated color temperature (CCT) as a function of typical parameters of influence, such as LED spectrum, spatial distribution of LED radiation, target distance, LED-to-LED spacing, and number of LEDs, are shown. To illustrate the method, we simulate and analyze the… 
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Methods Citations
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References

SHOWING 1-10 OF 16 REFERENCES

Color uniformity of the light distribution from several cluster configurations of multicolor LEDs

We analyze the effects on color uniformity of the near-field light distribution due to different cluster configurations (at optimum packaging density for uniform irradiance) of light sources using…

Optimization of white polychromatic semiconductor lamps

A stochastic method of optimization of a white-light source that relies on additive color mixing of the emissions from colored light-emitting diodes (LEDs) was developed. The method allows for…

Effective method for improving illuminating properties of white-light LEDs

A white LED whose color temperature is approximately 6500K and CRI is 70, can be improved its color rendering index better than 80 and its correlated color temperature down to near 3000K simultaneously by combining with a specific color LED.

Lighting theory and luminous characteristics of white light-emitting diodes

A near-ultraviolet (UV)-based white light-emitting diode (LED) lighting system linked with a semiconductor InGaN LED and compound phosphors for general lighting applications is proposed. We have…

Chromaticity and color temperature for achitectural lighting

HBLEDs bring a new dimension to architectural lighting design: color. Compared to traditional "white" light sources such as fluorescent and metal halide lamps, HBLEDs offer lighting designers…

Spatial distribution of LED radiation

  • Ivan Moreno
  • Physics
    International Optical Design Conference
  • 2006
The remarkable properties of light-emitting diodes (LEDs) make them ideal sources for many applications ranging from indicator lights, optical communication systems, and displays to solid-state…

Calculating correlated color temperatures across the entire gamut of daylight and skylight chromaticities.

Chromaticities calculated from the measurements of nearly 7000 daylight and skylight spectra are used to test an equation that accurately maps CIE 1931 chromaticities x and y into CCT, and this equation is accurate across wide chromaticity and CCT ranges (3000-10(6) K) spanned by daylight andSkylight.

Designing light-emitting diode arrays for uniform near-field irradiance.

First-order design of light sources consisting of multiple light-emitting diodes (LEDs) to uniformly illuminate a near target plane is analyzed by considering each single LED as an imperfect Lambertian emitter to achieve uniform near-field irradiance.

Optimized additive mixing of colored light-emitting diode sources

Given a set of available LEDs or other light sources with known specifications including spectrum, total luminous flux (in lumens), and efficacy (in lumens per watts), we show how to select that…

Spectral and luminous efficacy change of high-power LEDs under different dimming methods

Dimming is an important and necessary feature for light sources used in general lighting applications. An experimental study was conducted to quantify the spectral and luminous efficacy change of…