Patent ID: 6129866
Filing Date: 2000-10-10
Classification: B29C,B29D,G02B,H01L

Abstract:
A stamper for use in forming a planar micro-lens array, the lens array being formed by a plurality of convex portions of high refractive resin material applied onto a planar surface of a glass substrate, in which, after the high refractive resin material is applied onto plural concave portions of said stamper, the planar glass substrate is contacted thereon to exude the resin in between the concave portions and the glass plate, and the resin is then cured and released therefrom,herein the plurality of concave portions for forming lens elements of said micro-lens array are formed on a stamping surface of said stamper by transcription or etching, andwherein a trap portion is formed at an outer periphery of said lens elements of said stamping surface of said stamper by transcription or etching having a depth substantially equal to that of said concave portions, extending at least to an outer peripheral edge of a region where said glass substrate is to be contacted therewith and being open to the periphery at the outer peripheral edge of the region where the substrate is to be contacted therewith.