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:
May. 03, 2016
Filed:
May. 24, 2012
Kurt J. Halverson, Lake Elmo, MN (US);
Raymond J. Kenney, Woodbury, MN (US);
Brian W. Lueck, Houlton, WI (US);
Kenneth A.p. Meyer, White Bear Lake Township, MN (US);
Scott M. Tapio, Falcon Heights, MN (US);
Michael E. Lauters, Hudson, WI (US);
Olester Benson, Jr., Woodbury, MN (US);
Gary E. Gaides, Woodbury, MN (US);
Kurt J. Halverson, Lake Elmo, MN (US);
Raymond J. Kenney, Woodbury, MN (US);
Brian W. Lueck, Houlton, WI (US);
Kenneth A.P. Meyer, White Bear Lake Township, MN (US);
Scott M. Tapio, Falcon Heights, MN (US);
Michael E. Lauters, Hudson, WI (US);
Olester Benson, Jr., Woodbury, MN (US);
Gary E. Gaides, Woodbury, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
The present disclosure provides a light control film that is capable of transmitting light, or allowing a viewer to observe information, only within a viewing region centered around the normal (perpendicular line) to a surface. The light control film generally blocks information or light outside of this viewing region, and provides security in all directions including right-and-left and up-and-down of the film. The light control film includes a plurality of light-transmissive cavities that are surrounded by a light absorbing material, such that each of the plurality of cavities is optically isolated from adjacent cavities. Each of the light-transmissive cavities effectively block light which enters the cavity outside of a viewing (that is, cutoff) angle.