Micro-optic lens for data storage

Tom D. Milster, Robert M. Trusty, Mark S. Wang, Fred F. Froehlich, J. K. Erwin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


A new type of microlens is described for data storage applications that has improved off-axis performance. The lens consists of a micro-Fresnel pattern on a curved substrate. The radius of the substrate is equal to the focal length of the lens. If the pattern and substrate are thin, the combination satisfies the Abbe sine condition. Therefore, the lens is free of coma. A 0.5 numerical aperture and 0.50 mm focal length lens are described in detail. A 0.16 numerical aperture lens was fabricated holographically, and results are presented.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Number of pages7
ISBN (Print)0819406082, 9780819406088
StatePublished - 1991
EventOptical Data Storage '91 - Colorado Springs, CO, USA
Duration: Feb 25 1991Feb 27 1991

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherOptical Data Storage '91
CityColorado Springs, CO, USA

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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