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. 09, 2022
Filed:
Dec. 20, 2018
Applicant:
Dispelix Oy, Espoo, FI;
Inventor:
Kasimir Blomstedt, Espoo, FI;
Assignee:
DISPELIX OY, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/42 (2006.01); G02B 5/18 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 27/4205 (2013.01); G02B 5/1819 (2013.01); G02B 5/1828 (2013.01); G02B 27/0172 (2013.01); G02B 27/4272 (2013.01);
Abstract
The invention relates to a waveguide display element for guiding an image from a first lateral zone of the element to a second lateral zone of the element, the element comprising a plurality of waveguide layers (A-E) on top of each other. The element further comprises at least one intermediate diffractive optical element (AB,BC,AD,DE) arranged between two of said waveguide layers. The intermediate diffractive optical element (AB,BC,AD,DE) is adapted to change the distribution of propagating light power between the layers. The invention also concerns a diffractive display device comprising such element.