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Optical Engineering

Measuring the angles and pyramidal error of high-precision prisms
Author(s): Alberto Jaramillo-Nunez; Carlos I. Robledo-Sanchez
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Paper Abstract

The use of a Twyman-Green interferometer to measure the wedge angles and pyramidal error of high-precision optical prisms is described. The method allows these parameters to be determined independently or in combination. Prism angles are measured with the aid of a reference flat attached to a goniometer mounting. The pyramidal error is obtained by measuring the period of interferogram fringe pattern. Prism angles up to 25 deg have been measured with a standard deviation of 3 arcsec.

Paper Details

Date Published: 1 October 1997
PDF: 4 pages
Opt. Eng. 36(10) doi: 10.1117/1.601516
Published in: Optical Engineering Volume 36, Issue 10
Show Author Affiliations
Alberto Jaramillo-Nunez, Instituto Nacional de Astrofisica (Mexico)
Carlos I. Robledo-Sanchez, Instituto Nacional de Astrofisica (Mexico)

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