Three dimensional bulk index inhomogeneity measurement using computed tomography

B. L. Stamper, J. H. Burge, W. J. Dallas

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


Manufacturers of optical glass strive to make a product that is homogeneous, isotropic, and free of any bubbles or mechanical strain. Glass used in forming images is very good, but the process of mixing the constituent materials, and melting them into a glass is limited. As uniform as the mixtures are, they are not perfect, and the effects can be seen anytime light must propagate through several centimeters of glass. One method for measuring the three dimensional inhomogeneities in a piece of glass will be shown. Interferometry and computed tomography will be used to map the bulk refractive index variations. Having three dimensional information on the refractive index is the first step in compensating for errors in an imaging system.

Original languageEnglish (US)
Pages (from-to)413-420
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2003
EventOptical Manufacturing and Testing V - San Diego, CA, United States
Duration: Aug 3 2003Aug 5 2003


  • Computed tomography
  • Inhomogeneity
  • Refractive index

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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