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:
Nov. 12, 2019
Filed:
Apr. 16, 2013
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Joseph C. Carls, Austin, TX (US);
Craig R. Schardt, Woodbury, MN (US);
Duane E. Preiss, Austin, TX (US);
Dwight E. Baldwin, Austin, TX (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 13/04 (2006.01); H04N 13/337 (2018.01); H04N 13/363 (2018.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
H04N 13/337 (2018.05); G02B 27/283 (2013.01); H04N 13/363 (2018.05);
Abstract
The present disclosure describes optical elements and optical devices that use the optical elements to allow the output of two imagers to be combined onto a single optical axis. Each of the two imagers can be based on alternate polarization directions, and the disclosed embodiments can enable high contrast 3D projectors without requiring either time or polarization sequencing. The present disclosure further describes projection systems that include the optical devices.