The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 2014
Filed:
Dec. 19, 2008
Axel Lundvall, Solna, SE;
Fredrik Nikolajeff, Stockholm, SE;
Fredrik Gustavsson, Lidingö, SE;
Robert Eklund, Österskär, SE;
Axel Lundvall, Solna, SE;
Fredrik Nikolajeff, Stockholm, SE;
Fredrik Gustavsson, Lidingö, SE;
Robert Eklund, Österskär, SE;
Rolling Optics AB, Stockholm, SE;
Abstract
The present invention provides a method of producing a two-sided microstructured product and a registration structure that can be used for the method. The method comprises the steps of: () providing primary product features () at a first surface of a substrate sheet (); () providing secondary product features () at an opposed surface; () registering the mutual alignment of the primary and secondary product features () to estimate alignment parameters; and () aligning the provision of primary and secondary product features (). The registration structure comprises a registration-array of focusing elements () at a first surface and a registration-array of reference objects () at an opposed surface aligned with primary and secondary product features () that provides a holographic representation () of the reference objects () in order to estimate the alignment of product features ().