title: Wafer-level fabrication of multi-element glass lenses: lens doublet with improved optical performances.
abstract: This Letter reports on the fabrication of glass lens doublets arranged in arrays and realized at wafer level by means of micro-fabrication. The technique is based on the accurate vertical assembly of separately fabricated glass lens arrays. Since each one of these arrays is obtained by glass melting in silicon cavities, silicon is employed as a spacer in order to build a well-aligned and robust optical module. It is shown that optical performance achieved by the lens doublet is better than for a single lens of equivalent numerical aperture, thanks to lower optical aberrations. The technique has good potential to match the optical requirements of miniature imaging systems.
authors.forename: Jorge
authors.initials: J
authors.lastname: Albero
authors.forename: Stéphane
authors.initials: S
authors.lastname: Perrin
authors.forename: Nicolas
authors.initials: N
authors.lastname: Passilly
authors.forename: Johann
authors.initials: J
authors.lastname: Krauter
authors.forename: Ludovic
authors.initials: L
authors.lastname: Gauthier-Manuel
authors.forename: Luc
authors.initials: L
authors.lastname: Froehly
authors.forename: Justine
authors.initials: J
authors.lastname: Lullin
authors.forename: Sylwester
authors.initials: S
authors.lastname: Bargiel
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Osten
authors.forename: Christophe
authors.initials: C
authors.lastname: Gorecki