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:
Aug. 12, 2025
Filed:
Dec. 04, 2019
3m Innovative Properties Company, St. Paul, MN (US);
David J. W. Aastuen, Shoreview, MN (US);
Zhisheng Yun, Sammamish, WA (US);
Timothy J. Nevitt, Red Wing, MN (US);
John D. Le, Woodbury, MN (US);
Susan L. Kent, Shorewood, MN (US);
Gilles J. Benoit, Minneapolis, MN (US);
David T. Yust, Woodbury, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
An optical film and a polarizing beam splitter (PBS) including the optical film is described. The optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack. When the optical film is disposed between, and adhered to, hypotenuses of first and second prisms to form a PBS and a cone of light is incident on the PBS making an incident angle of about 40 to 50 degrees with the optical film, the PBS has: an average optical reflectance Rs greater than about 95% for a first polarization state; an average optical transmittance Ts less than about 0.012% for the first polarization state; an average optical transmittance Tp less than about 98.5% for a second polarization state; and an average optical reflectance Rp less than about 0.25% for the second polarization state.