title: Self-referenced interferometer for cylindrical surfaces.
abstract: We present a new interferometric method for shape measurement of hollow cylindrical tubes. We propose a simple and robust self-referenced interferometer where the reference and object waves are represented by the central and peripheral parts, respectively, of the conical wave generated by a single axicon lens. The interferogram detected by a digital camera is characterized by a closed-fringe pattern with a circular carrier. The interference phase is demodulated using spatial synchronous detection. The capabilities of the interferometer are experimentally tested for various hollow cylindrical tubes with lengths up to 600 mm.
authors.forename: Martin
authors.initials: M
authors.lastname: Šarbort
authors.forename: Šimon
authors.initials: Š
authors.lastname: Řeřucha
authors.forename: Miroslava
authors.initials: M
authors.lastname: Holá
authors.forename: Zdeněk
authors.initials: Z
authors.lastname: Buchta
authors.forename: Josef
authors.initials: J
authors.lastname: Lazar