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:
Oct. 14, 2014
Filed:
Jun. 16, 2009
Brian J. Gates, Osceola, WI (US);
Charles A. Marttila, Shoreview, MN (US);
Travis L. Potts, Woodbury, MN (US);
Serge Wetzels, Newport, MN (US);
Brian J. Gates, Osceola, WI (US);
Charles A. Marttila, Shoreview, MN (US);
Travis L. Potts, Woodbury, MN (US);
Serge Wetzels, Newport, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A virtual image (VI) device displays an image that appears to lie above or below the plane of the device. A method of manufacturing a VI display device includes calculating an initial VI flux pattern based on an object and then fabricating a substrate having a VI array pattern based on the initial VI flux pattern. A plurality of lenses may then be applied over the VI array pattern. The VI substrate may be static or dynamic, and may show grey scale information. A photomask may be used as an intermediate element in the manufacture of the VI substrate, or may act as the VI substrate itself. A method of producing the initial VI flux pattern includes virtually tracing rays generated by different points of the object to an image plane and ii) summing the rays from the different points. The rays may be traced through a lens array.