title: Lens and surface testing with compact interferometers.
abstract: Easily manufacturable components are assembled into compact modified Twyman-Green interferometers and an interference microscope with only one objective.
authors.affiliation: Physics Department, Technological University, Delft, The Netherlands.
authors.forename: A C
authors.initials: AC
authors.lastname: van Heel
authors.forename: C A
authors.initials: CA
authors.lastname: Simons