title: Realization of Schmidt plates by ion exchange in glass.
abstract: A new technique is presented to realize Schmidt plates by ionic exchange controlled by electric field into adjacent areas. The shape and optical path in these areas may be adjusted very accurately. A preliminary plate has been made with three areas, and results are analyzed.
authors.affiliation: Ecole Nationale Superieure d'Ingenieurs Electriciens de Grenoble, B.P. 46, 38402 Saint Martin d'Heres. France.
authors.forename: J L
authors.initials: JL
authors.lastname: Coutaz
authors.forename: P C
authors.initials: PC
authors.lastname: Jaussaud
authors.forename: G H
authors.initials: GH
authors.lastname: Chartier