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:
May. 05, 2020
Filed:
May. 03, 2019
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventors:
Vivek Kumar Thakur, Plano, TX (US);
John M. Ferri, Allen, TX (US);
Paul L. Rancuret, McKinney, TX (US);
Assignee:
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01); G02B 27/28 (2006.01); G02B 27/14 (2006.01); F21V 8/00 (2006.01); G02B 27/12 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0081 (2013.01); G02B 6/0023 (2013.01); G02B 6/0026 (2013.01); G02B 6/0076 (2013.01); G02B 6/0078 (2013.01); G02B 27/126 (2013.01); G02B 27/141 (2013.01); G02B 27/283 (2013.01); G02B 27/286 (2013.01);
Abstract
The pupil formed by an optical apparatus is expanded by use of a beam splitter to replicate the pupil and a waveguide to further replicate the replicated pupil. An optional rotator element can rotate a portion of the light split by the beam splitter to provide consistent polarization of light in the optical apparatus. In some embodiments, the beam splitter replication expands the pupil in one direction, while the waveguide replication expands the pupil in a second direction.