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:
Dec. 03, 2013
Filed:
Jun. 05, 2012
Brian T. Weber, Saint Paul, MN (US);
Rolf W. Biernath, Wyoming, MN (US);
John C. Schultz, Afton, MN (US);
Gary T. Boyd, Woodbury, MN (US);
Brian T. Weber, Saint Paul, MN (US);
Rolf W. Biernath, Wyoming, MN (US);
John C. Schultz, Afton, MN (US);
Gary T. Boyd, Woodbury, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A system for projecting content at an angle to a rear projection screen. The system includes a projector configured for projecting changeable electronic content and a rear projection screen for receiving the projected content at an angle and displaying the projected content. The rear projection screen includes a turning film having prisms facing toward or away from the projector. For prisms facing toward the projector, a protective film covers the turning film. When the projected content is displayed on the rear projection screen, the content has a substantially uniform appearance.