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:
Apr. 18, 2023
Filed:
Jan. 25, 2022
3m Innovative Properties Company, St. Paul, MN (US);
Jo A. Etter, Kirkland, WA (US);
Timothy L. Wong, St. Paul, MN (US);
Zhisheng Yun, Sammamish, WA (US);
Gregg A. Ambur, River Falls, WI (US);
Benjamin G. Sonnek, Mahtomedi, MN (US);
Robert M. Jennings, Shoreview, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A method of fabricating an optical assembly includes providing a first mold having a first curved mold surface; placing a substantially flat reflective polarizer; on the first curved mold surface and applying at least one of pressure and heat to at least partially conform the reflective polarizer to the first curved mold surface; providing a second mold comprising a second mold surface, the first and second mold surfaces defining a mold cavity therebetween; substantially filling the mold cavity with a flowable material having a temperature greater than a glass transition temperature of the reflective polarizer; and solidifying the flowable material to form a solid optical element bonded to the reflective polarizer. A maximum variation of an orientation of a pass polarization state across the bonded reflective polarizer is within about 3 degrees of a maximum variation of the orientation of the pass polarization state across the substantially flat reflective polarizer.