Holographic reference glass for surface planeness testing

Publisher Website
Google Scholar
Abstract
An interferometer layout is proposed with variable sensitivity of flatness testing. Testing sensitivity variation, i.e., fringe pattern separation variation is carried out by different adjustment of angles of incidence on the surface under test for both information and reference beams. The said principle is advised to be implemented by means of a transmissive diffraction structure with equidistant straight lines upon a working surface of a glass plate, that is by means of a holographic test glass. Results are given of both theoretical and experimental investigation of the interferometer layout proposed being an evidence of a possibility to use the holographic test glasses for flatness testing of ground and polished surfaces of details made of glass, metal or plastic either in white light or monochrome.

This publication has 0 references indexed in Scilit: