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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 28 — Oct. 1, 2012
  • pp: 6870–6880

Fast measurement of automotive headlamps based on high dynamic range imaging

Hsien-Huang P. Wu, Yi-Ping Lee, and Shih-Hsin Chang  »View Author Affiliations

Applied Optics, Vol. 51, Issue 28, pp. 6870-6880 (2012)

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The headlamp of the automobile is a very important device for the safety of driving in the dark. Therefore, the distribution of the light designed to provide forward and lateral illumination needs to meet the requirements of various regulations. Traditional measurement of the distribution has been based on a point-by-point approach using a goniophotometer. In this paper, an imaging photometer is developed by combining a regular digital camera and a high dynamic range imaging technique to achieve faster and more complete measurement of the entire distribution. The experimental results indicate that errors of the measurements are within 10% of the true values, which is better than the 20% requirements of the industry.

© 2012 Optical Society of America

OCIS Codes
(100.2960) Image processing : Image analysis
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(110.4155) Imaging systems : Multiframe image processing

ToC Category:
Imaging Systems

Original Manuscript: May 3, 2012
Revised Manuscript: July 27, 2012
Manuscript Accepted: August 6, 2012
Published: September 28, 2012

Hsien-Huang P. Wu, Yi-Ping Lee, and Shih-Hsin Chang, "Fast measurement of automotive headlamps based on high dynamic range imaging," Appl. Opt. 51, 6870-6880 (2012)

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