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. 29, 2023
Filed:
Oct. 02, 2019
Applicant:
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Inventors:
Anthony D. McGettigan, Santa Rosa, CA (US);
Gary D. Sharp, Boulder, CO (US);
Assignee:
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/28 (2006.01); G02B 27/01 (2006.01); G02B 27/30 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
G02B 27/286 (2013.01); G02B 5/30 (2013.01); G02B 27/0172 (2013.01); G02B 27/30 (2013.01);
Abstract
An imaging system that contains a display, a polarization folded path lens with an intended image signal path and an exit pupil wherein light entering the PFP lens from the display substantially follows the intended signal path. A variant of this system is disclosed where the light entering the PFP lens substantially follows the signal path and leaves via the Exit pupil (as opposed to being aperture). Compared to the prior art, the techniques described herein improve transmission efficiency and reduce corruption of the image by non-signal path light.