OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 44, Iss. 19 — Jul. 1, 2005
  • pp: 4000–4003

Optical characterization of ultrabright LEDs

Juan Manuel Benavides and Robert H. Webb  »View Author Affiliations

Applied Optics, Vol. 44, Issue 19, pp. 4000-4003 (2005)

View Full Text Article

Enhanced HTML    Acrobat PDF (250 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Ultrabright light emitting diodes (LEDs) are a new light source for visual psychophysics and microscopy. The new LEDs are intended primarily for room and exterior illumination, and the manufacturers’ specifications are adequate for that. However, we use them as light sources in situations where a more complete characterization may be useful. For one set of LEDs we have measured the radiometric intensity and its distribution in space and wavelength, and we have tested for interactions of these variables and their dependence on driver configuration. We describe techniques for making these measurements and give a link to a simple calculator for converting among radiometric and photometric measures, as well as an evaluation of the safety considerations these very bright sources demand.

© 2005 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(230.3670) Optical devices : Light-emitting diodes
(230.6080) Optical devices : Sources

Original Manuscript: July 22, 2004
Revised Manuscript: November 22, 2004
Manuscript Accepted: January 31, 2005
Published: July 1, 2005

Juan Manuel Benavides and Robert H. Webb, "Optical characterization of ultrabright LEDs," Appl. Opt. 44, 4000-4003 (2005)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. M. G. Craford, N. Holonyak, F. A. Kish, “In pursuit of the ultimate lamp,” Sci. Am. 284(2) 63–67 (2001). [CrossRef]
  2. S. Nakamura, T. Mukai, M. Senoh, “Candela-class high-brightness InGaN/AlGaN double-heterostructure blue-light-emitting diodes,” Appl. Phys. Lett. 64, 1687–1689 (1994). [CrossRef]
  3. A. Bergh, G Craford, A. Duggal, R. Haiz, “The promise and challenges of solid-state lightning,” Phys. Today 54(12), 42 (2001), http://www.physicstoday.org . [CrossRef]
  4. Lumileds Lighting, “Power Light Source, Luxeon V Star,” Technical Data DS30,(2003), www.lumileds.com .
  5. R. H. Webb, http//www.eri.harvard.edu/faculty/webb/LightCalc.exe . and http//www.eri.harvard.edu/faculty/webb/Light-Calculator-instructions.doc .
  6. United Detector Technology, Santa Monica, Calif., Model 40X.
  7. webb@eri.harvard.edu.
  8. http://www.oceanoptics.com .
  9. Fourward Technologies, Buena Vista, Va., http://www.fourward.com .
  10. F. Delori, Schepens Eye Research Institute, 20 Staniford Street, Boston, Massachusetts (personal communication, 2005).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited