Measurement of a 2-meter flat using a pentaprism scanning system

Proteep C.V. Mallik, Chunyu Zhao, James H. Burge

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations


A scanning pentaprism system may be used as an absolute test for an optical flat. Such a system was built and used to test a 2-meter flat mirror. This system uses light from an autocollimator that is reflected from 2 pentaprisms to project reference beams of light onto the flat mirror. The light reflected from the mirror back through the pentaprisms provides information on low order optical aberrations in the flat mirror. We report results of the test on a 2-meter flat.

Original languageEnglish (US)
Article number58691A
Pages (from-to)1-11
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
EventOptical Manufacturing and Testing VI - San DIego, CA, United States
Duration: Jul 31 2005Aug 1 2005


  • Flat mirror
  • Optical testing
  • Pentaprism

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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