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:
Feb. 20, 2024
Filed:
Mar. 08, 2019
Dispelix Oy, Espoo, FI;
Kasimir Blomstedt, Espoo, FI;
Juuso Olkkonen, Espoo, FI;
DISPELIX OY, Espoo, FI;
Abstract
The invention relates to a waveguide display element comprising a waveguide body and an in-coupling grating () arranged to the waveguide body. The in-coupling grating () is configured to couple incoming light into the waveguide body into two separate directions (A,B) using opposite diffraction orders (IC:+1, IC:−1) for splitting the field of view of the incoming light. Further the in-coupling grating () is configured, typically by setting its period suitably short, such that said coupling takes place only at wavelengths below a threshold wavelength residing in the visible wavelength range. The invention also relates to a waveguide stack (A,B,C).