Abstract

In many lighting applications at the lux level, full coverage of the target surface, uniformity, and glare are important requirements. In the case of LEDs, luminaire optical output depends upon the source of luminous flux, radiation spatial distribution, geometry of the LED array, and source-to-target distance. One has to optimize these parameters to fulfill the needs of the application and to have an efficient LED luminaire. This paper discusses the interdependencies of these parameters. The optimization of a ring LED source configuration is demonstrated for an application of uniform illumination of a plane surface with minimum source flux and with no glare.

© 2011 OSA

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References

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    [CrossRef]
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    [CrossRef]
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2010

2009

H. Yang, J. W. M. Bergmans, T. C. W. Schenk, J.-P. M. G. Linnartz, and R. Rietman, “Uniform illumination rendering using an array of LEDs: a signal processing perspective,” IEEE Trans. Signal Process. 57(3), 1044–1057 (2009).
[CrossRef]

A. J.-W. Whang, Y.-Y. Chen, and Y.-T. Teng, “Designing uniform illumination systems by surface-tailored lens and configurations of LED arrays,” J. Disp. Technol 5(3), 94–103 (2009).
[CrossRef]

2007

I. Moreno, J. Muñoz, and R. Ivanov, “Uniform illumination of distant targets using a spherical light-emitting diode array,” Opt. Eng. 46(3), 033001 (2007).
[CrossRef]

E. M. Guttsait, “Analysis of LED modules for local illumination,” J. Commun. Technol. Electron. 52(12), 1377–1395 (2007).
[CrossRef]

2006

S. K. Kopparapu, “Lighting design for machine vision application,” Image Vis. Comput. 24(7), 720–726 (2006).
[CrossRef]

I. Moreno, “Design of LED spherical lamps for uniform far-field illumination,” Proc. SPIE 6046, 60462E (2006).
[CrossRef]

2004

I. Moreno, “Configuration of LED arrays for uniform illumination,” Proc. SPIE 5622, 713–718 (2004).
[CrossRef]

2000

1994

N. Wittels and M. A. Gennert, “Optimal lighting design to maximize illumination uniformity,” SPIE 2348, 46–56 (1994).
[CrossRef]

1993

M. A. Gennert, N. Wittels, and G. L. Leatherman, “Uniform frontal illumination of planer surfaces: where to place the lamps,” Opt. Eng. 32(6), 1261–1271 (1993).
[CrossRef]

Arvind, S.

R. Deepa and S. Arvind, “Modeling and simulation of multi-element LED source,” J.Light. Visual Environ. (to be published).

Bergmans, J. W. M.

H. Yang, J. W. M. Bergmans, T. C. W. Schenk, J.-P. M. G. Linnartz, and R. Rietman, “Uniform illumination rendering using an array of LEDs: a signal processing perspective,” IEEE Trans. Signal Process. 57(3), 1044–1057 (2009).
[CrossRef]

Chen, F.

Chen, Y.-Y.

A. J.-W. Whang, Y.-Y. Chen, and Y.-T. Teng, “Designing uniform illumination systems by surface-tailored lens and configurations of LED arrays,” J. Disp. Technol 5(3), 94–103 (2009).
[CrossRef]

Deepa, R.

R. Deepa and S. Arvind, “Modeling and simulation of multi-element LED source,” J.Light. Visual Environ. (to be published).

Gennert, M. A.

N. Wittels and M. A. Gennert, “Optimal lighting design to maximize illumination uniformity,” SPIE 2348, 46–56 (1994).
[CrossRef]

M. A. Gennert, N. Wittels, and G. L. Leatherman, “Uniform frontal illumination of planer surfaces: where to place the lamps,” Opt. Eng. 32(6), 1261–1271 (1993).
[CrossRef]

Guttsait, E. M.

E. M. Guttsait, “Analysis of LED modules for local illumination,” J. Commun. Technol. Electron. 52(12), 1377–1395 (2007).
[CrossRef]

Hoffnagle, J. A.

Ivanov, R.

I. Moreno, J. Muñoz, and R. Ivanov, “Uniform illumination of distant targets using a spherical light-emitting diode array,” Opt. Eng. 46(3), 033001 (2007).
[CrossRef]

Jefferson, C. M.

Kopparapu, S. K.

S. K. Kopparapu, “Lighting design for machine vision application,” Image Vis. Comput. 24(7), 720–726 (2006).
[CrossRef]

Leatherman, G. L.

M. A. Gennert, N. Wittels, and G. L. Leatherman, “Uniform frontal illumination of planer surfaces: where to place the lamps,” Opt. Eng. 32(6), 1261–1271 (1993).
[CrossRef]

Linnartz, J.-P. M. G.

H. Yang, J. W. M. Bergmans, T. C. W. Schenk, J.-P. M. G. Linnartz, and R. Rietman, “Uniform illumination rendering using an array of LEDs: a signal processing perspective,” IEEE Trans. Signal Process. 57(3), 1044–1057 (2009).
[CrossRef]

Liu, S.

Luo, X.

Moreno, I.

I. Moreno, J. Muñoz, and R. Ivanov, “Uniform illumination of distant targets using a spherical light-emitting diode array,” Opt. Eng. 46(3), 033001 (2007).
[CrossRef]

I. Moreno, “Design of LED spherical lamps for uniform far-field illumination,” Proc. SPIE 6046, 60462E (2006).
[CrossRef]

I. Moreno, “Configuration of LED arrays for uniform illumination,” Proc. SPIE 5622, 713–718 (2004).
[CrossRef]

Muñoz, J.

I. Moreno, J. Muñoz, and R. Ivanov, “Uniform illumination of distant targets using a spherical light-emitting diode array,” Opt. Eng. 46(3), 033001 (2007).
[CrossRef]

Qin, Z.

Rietman, R.

H. Yang, J. W. M. Bergmans, T. C. W. Schenk, J.-P. M. G. Linnartz, and R. Rietman, “Uniform illumination rendering using an array of LEDs: a signal processing perspective,” IEEE Trans. Signal Process. 57(3), 1044–1057 (2009).
[CrossRef]

Schenk, T. C. W.

H. Yang, J. W. M. Bergmans, T. C. W. Schenk, J.-P. M. G. Linnartz, and R. Rietman, “Uniform illumination rendering using an array of LEDs: a signal processing perspective,” IEEE Trans. Signal Process. 57(3), 1044–1057 (2009).
[CrossRef]

Teng, Y.-T.

A. J.-W. Whang, Y.-Y. Chen, and Y.-T. Teng, “Designing uniform illumination systems by surface-tailored lens and configurations of LED arrays,” J. Disp. Technol 5(3), 94–103 (2009).
[CrossRef]

Wang, K.

Whang, A. J.-W.

A. J.-W. Whang, Y.-Y. Chen, and Y.-T. Teng, “Designing uniform illumination systems by surface-tailored lens and configurations of LED arrays,” J. Disp. Technol 5(3), 94–103 (2009).
[CrossRef]

Wittels, N.

N. Wittels and M. A. Gennert, “Optimal lighting design to maximize illumination uniformity,” SPIE 2348, 46–56 (1994).
[CrossRef]

M. A. Gennert, N. Wittels, and G. L. Leatherman, “Uniform frontal illumination of planer surfaces: where to place the lamps,” Opt. Eng. 32(6), 1261–1271 (1993).
[CrossRef]

Yang, H.

H. Yang, J. W. M. Bergmans, T. C. W. Schenk, J.-P. M. G. Linnartz, and R. Rietman, “Uniform illumination rendering using an array of LEDs: a signal processing perspective,” IEEE Trans. Signal Process. 57(3), 1044–1057 (2009).
[CrossRef]

Appl. Opt.

IEEE Trans. Signal Process.

H. Yang, J. W. M. Bergmans, T. C. W. Schenk, J.-P. M. G. Linnartz, and R. Rietman, “Uniform illumination rendering using an array of LEDs: a signal processing perspective,” IEEE Trans. Signal Process. 57(3), 1044–1057 (2009).
[CrossRef]

Image Vis. Comput.

S. K. Kopparapu, “Lighting design for machine vision application,” Image Vis. Comput. 24(7), 720–726 (2006).
[CrossRef]

J. Commun. Technol. Electron.

E. M. Guttsait, “Analysis of LED modules for local illumination,” J. Commun. Technol. Electron. 52(12), 1377–1395 (2007).
[CrossRef]

J. Disp. Technol

A. J.-W. Whang, Y.-Y. Chen, and Y.-T. Teng, “Designing uniform illumination systems by surface-tailored lens and configurations of LED arrays,” J. Disp. Technol 5(3), 94–103 (2009).
[CrossRef]

J.Light. Visual Environ.

R. Deepa and S. Arvind, “Modeling and simulation of multi-element LED source,” J.Light. Visual Environ. (to be published).

Opt. Eng.

I. Moreno, J. Muñoz, and R. Ivanov, “Uniform illumination of distant targets using a spherical light-emitting diode array,” Opt. Eng. 46(3), 033001 (2007).
[CrossRef]

M. A. Gennert, N. Wittels, and G. L. Leatherman, “Uniform frontal illumination of planer surfaces: where to place the lamps,” Opt. Eng. 32(6), 1261–1271 (1993).
[CrossRef]

Opt. Express

Proc. SPIE

I. Moreno, “Configuration of LED arrays for uniform illumination,” Proc. SPIE 5622, 713–718 (2004).
[CrossRef]

I. Moreno, “Design of LED spherical lamps for uniform far-field illumination,” Proc. SPIE 6046, 60462E (2006).
[CrossRef]

SPIE

N. Wittels and M. A. Gennert, “Optimal lighting design to maximize illumination uniformity,” SPIE 2348, 46–56 (1994).
[CrossRef]

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Figures (5)

Flowchart 1
Flowchart 1

Optimization methodology of LED luminaire.

Graph 1
Graph 1

Area coverage dependency on angle aperture and flux output for single LED.

Fig. 1
Fig. 1

Illuminance distribution patterns for Source flux = 3000 lm for angle aperture of 60⁰–160⁰ with Region I represented by violet color, Region II represented by green color, Region III represented by blue color.

Graph 2
Graph 2

Illuminance distribution curves for source flux = 3000 lm for angle aperture varying from 60° to 160°.

Graph 3
Graph 3

Dependency of coverage area on LED density and spatial distribution.

Tables (2)

Tables Icon

Table 1 Quantitative Analysis of Configurations of Single LED

Tables Icon

Table 2 Analysis of ring LED luminaire for a fixed 3000lm total flux

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

Uniformity   =   Maximum  illuminance   Average   illuminance   .
Diversity   Ratio  =   Maximum  illuminance  Minimum  illuminance   .
x = ( r * cos ( i θ s t e p ) ,    y = ( r * sin ( i θ s t e p ) ,

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