Wedge plate interferometry: a new dual field configuration for collimation testing

摘要

A method of deriving a dual field fringe pattern from a single wedge plate for collimation testing is presented. The proposed technique uses a wedge plate and a 90 degrees prism retroreflector to form two interference fields. With the two sets of fringes, the technique provides twofold increase in sensitivity and has its own reference. (C) 1998 Elsevier Science Ltd. All rights reserved. [References: 9]