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:
Feb. 24, 2015
Filed:
Apr. 14, 2010
Encai Hao, Woodbury, MN (US);
William Blake Kolb, West Lakeland, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
Fei LU, Woodbury, MN (US);
Adam D. Haag, Woodbury, MN (US);
Encai Hao, Woodbury, MN (US);
William Blake Kolb, West Lakeland, MN (US);
John A. Wheatley, Lake Elmo, MN (US);
Fei Lu, Woodbury, MN (US);
Adam D. Haag, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Optical constructions are disclosed. A disclosed optical construction includes first and second optical layers having first and second major surfaces that face each other and are separated by an air gap. The first and second surfaces are susceptible to physically contacting each other at a location in the air gap. The optical construction further includes an optical film that is disposed at the location to prevent the first and second major surfaces from contacting each other at the location. The optical film has an effective index of refraction that is not greater than about 1.3.