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:
May. 15, 2009
Raymond P. Johnston, Lake Elmo, MN (US);
David G. Freier, Saint Paul, MN (US);
Mieczyslaw H. Mazurek, Roseville, MN (US);
Martin Kristoffersen, Maplewood, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
Raymond P. Johnston, Lake Elmo, MN (US);
David G. Freier, Saint Paul, MN (US);
Mieczyslaw H. Mazurek, Roseville, MN (US);
Martin Kristoffersen, Maplewood, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
Suspended optical film assemblies including a frame, an optical film, and an elastomeric film are disclosed. The elastomeric films include a first attachment region, a second attachment region, and a free region between the first and second attachment regions. The first attachment region is affixed to the frame; the second attachment region is affixed to the optical film, so that the free region is in tension and supports the optical film within the frame. The tension in the elastomeric film free region can help maintain flatness and reduce distortion in the optical film during environmental changes that influence dimensional changes in the frame, optical film, and elastomeric film.