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… 
View PDF
96 Citations
Background Citations
19
Methods Citations
9

Figures from this paper

96 Citations

Citation Type

Citation Type

Color patterns in a tapered lightpipe with RGB LEDs
There is an enormous range of possible color distributions that may be created with a light cone when the primary source is an array of multicolor light-emitting diodes (LEDs). If one looks through a…
Modeling the radiation pattern of LEDs.
TLDR
A general, simple but accurate analytic representation for the radiation pattern of the light emitted from an LED, which accurately model a wide variety of radiation patterns from several world-class manufacturers.
Color tunable hybrid lamp: LED-incandescent and LED-fluorescent
  • Ivan Moreno
  • Physics, Engineering
    Symposium on Optics in Industry
  • 2007
Light-emitting diodes (LEDs) can be chosen to emit light in a wide variety of highly saturated colors. As a consequence, a hybrid lamp assembled with colored LEDs and with one incandescent or…
Improving the color uniformity of a LED-array based illumination system with a tailored light distribution
We designed a compact illumination system based on a linear array of single package RGB LEDs which creates a tailored light distribution. Realistic optical simulations in Advanced Systems Analysis…
Simple function for intensity distribution from LEDs
Since its beginnings, light-emitting diode (LED) has progressed toward greater performance. Today, LEDs are everywhere, in many shapes, and with a wide range of radiation patterns. We propose a…
Optimization of optical systems for LED spot lights concerning the color uniformity
Spotlighting is one illumination field where the application of light emitting diodes (LED) creates many advantages. Commonly, the system for spot lights consists of a LED light engine and…
Uniform illumination design by configuration of LEDs and optimization of LED lens for large-scale color-mixing applications.
TLDR
This work has proposed an LED color-mixing method that can produce both high color uniformity and irradiance uniformity illumination, and this method is composed of two main aspects: arrangement of the irradiance array and design of the LED lens.
Optical design of color light-emitting diode ring light for machine vision inspection
TLDR
A simple and practical design tool of angled light-emitting-diode (LED) ring arrays for uniform near-field irradiance has been developed by introducing a simple model to simplify the complexity of nonrotational symmetric irradiance distribution of angled LEDs.
The Research of LED Arrays for Uniform Illumination
TLDR
A numerical modeling based on the direct datasheet fit is used to optimize and analyze the uniform illumination system designs, and close attention is paid to the LED source model.
The Optimal Design of Multi-Chip White-Light LEDs for Color Uniformity
A multi-chip white-light modeling algorithm for high color rendering index and high color uniformity of surface mounted LED devices is demonstrated. The simulation of white-light LED model, according…
...
...

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…
Modelling of multichip LED packages for illumination
Modelling of the spatial uniformity of the light output from multicolour light emitting diode (LED)-based lamps can be used to evaluate and optimize LED and reflector configurations. The percentage…
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
TLDR
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…
Spectral design considerations for white LED color rendering
TLDR
Multichip and phosphor-type white LED models were analyzed by simulation of their color characteristics and luminous efficacy of radiation, compared with those of conventional light sources for general lighting.
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.
TLDR
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.
TLDR
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.
...
...