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:
Jun. 25, 2024
Filed:
Apr. 10, 2019
Applicant:
Dispelix Oy, Espoo, FI;
Inventor:
Juuso Olkkonen, Espoo, FI;
Assignee:
DISPELIX OY, Espoo, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 27/00 (2006.01); F21V 8/00 (2006.01); G02B 27/01 (2006.01); G02B 27/42 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0081 (2013.01); G02B 6/0013 (2013.01); G02B 27/0172 (2013.01); G02B 27/4233 (2013.01);
Abstract
The invention relates to a diffractive exit pupil expander arrangement for display applications. The arrangement comprises a first lightguide element () comprising an exit pupil expander () and arranged in a first plane and a second lightguide element () comprising an in-coupler () and arranged in a second plane. The in-coupler is optically coupled with the exit pupil expander (). Further, the first lightguide element () is arranged to confine propagation of light laterally in said first plane by reflections, and the first plane and the second plane are arranged at an angle (a) with respect to each other.