Abstract

Light-emitting diodes (LEDs) can function as very stable, spectrally selective photodiodes in simple Sun photometers. This technology has now been applied to inexpensive solar radiometers designed to measure full-sky solar irradiance at various wavelengths.

© 2000 Optical Society of America

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References

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  1. Forrest M. MimsLight Emitting Diodes, Howard W. Sams & Co., 118–9 (1973).
  2. Forrest M. Mims, “A Sun Photometer with Light-Emitting Diodes as Spectrally Selective Detectors,” Applied Optics, 31, 6965–7 (1992).
  3. Forrest M. Mims, An International Haze Monitoring Network for Students, Bull. Am. Met. Soc., 80, 1421–31 (1999).

1999 (1)

Forrest M. Mims, An International Haze Monitoring Network for Students, Bull. Am. Met. Soc., 80, 1421–31 (1999).

1992 (1)

Forrest M. Mims, “A Sun Photometer with Light-Emitting Diodes as Spectrally Selective Detectors,” Applied Optics, 31, 6965–7 (1992).

Mims, Forrest M.

Forrest M. Mims, An International Haze Monitoring Network for Students, Bull. Am. Met. Soc., 80, 1421–31 (1999).

Forrest M. Mims, “A Sun Photometer with Light-Emitting Diodes as Spectrally Selective Detectors,” Applied Optics, 31, 6965–7 (1992).

Forrest M. MimsLight Emitting Diodes, Howard W. Sams & Co., 118–9 (1973).

Applied Optics (1)

Forrest M. Mims, “A Sun Photometer with Light-Emitting Diodes as Spectrally Selective Detectors,” Applied Optics, 31, 6965–7 (1992).

Bull. Am. Met. Soc. (1)

Forrest M. Mims, An International Haze Monitoring Network for Students, Bull. Am. Met. Soc., 80, 1421–31 (1999).

Other (1)

Forrest M. MimsLight Emitting Diodes, Howard W. Sams & Co., 118–9 (1973).

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Figures (4)

Figure 1
Figure 1

LED solar full-sky or global irradiance radiometer with two LED sensor probes having Teflon diffusers.

Figure 2
Figure 2

Mechanical design of LED solar radiometer probes.

Figure 3
Figure 3

Simple transimpedance amplifier suitable for an LED solar radiometer.

Figure 4
Figure 4

The seasonal cycle is obvious in this plot of full-sky irradiance at solar noon on most days near Seguin, Texas, (29.6 N, 97.9 W) measured with a 3-wavelength LED radiometer. Suppressed irradiance on some days was caused by thick overcast. The low irradiances near May 20, 1998 were caused by significant smoke from major fires in southern Mexico.

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