Abstract

Recently, solid state lighting has begun to play an important role in colorimetric instrumentation. LEDs are being evaluated as one of the possible standard light sources for such devices. In this study, an innovative tunable daylight simulator is developed, which mainly consists of only a few LEDs and a specially designed optical thin-film filter with a fixed transmission spectrum. This simulator is able to simulate daylight spectra with correlated color temperatures ranging from 4000 to 10,000K with very good color rendition indices (CRI97). We have achieved the color difference 0.01, which is better than 0.015, a maximum tolerance as defined by the International Commission on Illumination of the color differences in 1976 uv color space between standard daylight and a simulator.

© 2011 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. R. L. Feller, “The deteriorating effect of light on museum objects: principles of photochemistry, the effect on varnishes and paint vehicles and on paper,” in Museum News (American Association of Museums, 1964), Vol.  42, pp. I–VIII.
  2. CIE, Colorimetry, 2nd ed., CIE Publication No. 15.2 (Central Bureau of the CIE, 1986).
  3. F. Grum, “Artificial light sources for simulating natural daylight and skylight,” Appl. Opt. 7, 183–187 (1968).
    [CrossRef] [PubMed]
  4. A. Corrons and A. Pons, “Daylight simulator,” Appl. Opt. 26, 2867–2870 (1987).
    [CrossRef] [PubMed]
  5. I. Powell, “Quartz halogen D65 simulation,” Appl. Opt. 34, 7925–7934 (1995).
    [CrossRef] [PubMed]
  6. I. Fryc, S. W. Brown, and Y. Ohno, “Spectral matching with an LED-based spectrally tunable light source,” Proc. SPIE 5941, 59411I (2005).
    [CrossRef]
  7. S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
    [CrossRef]
  8. A. R. Robertson, “Computation of correlated color temperature and distribution temperature,” J. Opt. Soc. Am. 58, 1528–1535 (1968).
    [CrossRef]
  9. J. A. Dobrowolski, “Optical interference filter for the adjustment of spectral response and spectral power distribution,” Appl. Opt. 9, 1396–1402 (1970).
    [CrossRef] [PubMed]
  10. G. Wyszecki and W. S. Stiles, Color Science (Wiley, 1982).

2005

I. Fryc, S. W. Brown, and Y. Ohno, “Spectral matching with an LED-based spectrally tunable light source,” Proc. SPIE 5941, 59411I (2005).
[CrossRef]

S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
[CrossRef]

1995

1987

1970

1968

Brown, S. W.

I. Fryc, S. W. Brown, and Y. Ohno, “Spectral matching with an LED-based spectrally tunable light source,” Proc. SPIE 5941, 59411I (2005).
[CrossRef]

Chhajed, S.

S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
[CrossRef]

CIE,

CIE, Colorimetry, 2nd ed., CIE Publication No. 15.2 (Central Bureau of the CIE, 1986).

Corrons, A.

Dobrowolski, J. A.

Feller, R. L.

R. L. Feller, “The deteriorating effect of light on museum objects: principles of photochemistry, the effect on varnishes and paint vehicles and on paper,” in Museum News (American Association of Museums, 1964), Vol.  42, pp. I–VIII.

Fryc, I.

I. Fryc, S. W. Brown, and Y. Ohno, “Spectral matching with an LED-based spectrally tunable light source,” Proc. SPIE 5941, 59411I (2005).
[CrossRef]

Gessmann, Th.

S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
[CrossRef]

Grum, F.

Li, Y.-L.

S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
[CrossRef]

Ohno, Y.

I. Fryc, S. W. Brown, and Y. Ohno, “Spectral matching with an LED-based spectrally tunable light source,” Proc. SPIE 5941, 59411I (2005).
[CrossRef]

Pons, A.

Powell, I.

Robertson, A. R.

Schubert, E. F.

S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
[CrossRef]

Stiles, W. S.

G. Wyszecki and W. S. Stiles, Color Science (Wiley, 1982).

Wyszecki, G.

G. Wyszecki and W. S. Stiles, Color Science (Wiley, 1982).

Xi, Y.

S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
[CrossRef]

Appl. Opt.

J. Appl. Phys.

S. Chhajed, Y. Xi, Y.-L. Li, Th. Gessmann, and E. F. Schubert, “Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes,” J. Appl. Phys. 97, 054506 (2005).
[CrossRef]

J. Opt. Soc. Am.

Proc. SPIE

I. Fryc, S. W. Brown, and Y. Ohno, “Spectral matching with an LED-based spectrally tunable light source,” Proc. SPIE 5941, 59411I (2005).
[CrossRef]

Other

R. L. Feller, “The deteriorating effect of light on museum objects: principles of photochemistry, the effect on varnishes and paint vehicles and on paper,” in Museum News (American Association of Museums, 1964), Vol.  42, pp. I–VIII.

CIE, Colorimetry, 2nd ed., CIE Publication No. 15.2 (Central Bureau of the CIE, 1986).

G. Wyszecki and W. S. Stiles, Color Science (Wiley, 1982).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (7)

Fig. 1
Fig. 1

Spectral power distribution of LEDs used.

Fig. 2
Fig. 2

(a) Spectral power distribution of simulation results for D 50 . (b) Spectral power distribution of simulation results for D 65 . (c) Spectral power distribution of simulation results for D 75 .

Fig. 3
Fig. 3

(a) Spectra of the expected color filter and the designed one. (b) Spectra of the designed color filter and that measured for a real device.

Fig. 4
Fig. 4

Experimental setup for the daylight simulator.

Fig. 5
Fig. 5

Comparison of spectral power distributions among the standard daylight, measurement of mixing LEDs, and measurement of mixing LEDs plus one filter for (a)  5000 K , (b)  6500 K , and (c)  7500 K .

Fig. 6
Fig. 6

Relative errors of SPDs between the standard daylight and the simulators tuning CCT every 500 K from 4000 to 10 , 000 K .

Fig. 7
Fig. 7

(a) Allowable range of CIE 1976 ( u 10 , v 10 ) chromaticity from the daylight simulator for the colorimetry of D 50 , D 65 , and D 75 . (b) Allowable range of CIE 1964 ( x 10 , y 10 ) chromaticity from the daylight simulator for the colorimetry of D 50 , D 65 , and D 75 .

Tables (2)

Tables Icon

Table 1 Specifications of LEDs Used

Tables Icon

Table 2 Colorimetric Characteristics of the Tunable Daylight Simulator

Metrics