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:
Oct. 17, 2023
Filed:
May. 26, 2021
Shenzhen Optiark Semiconductor Technologies Limited, Shenzhen, CN;
SHENZHEN OPTIARK SEMICONDUCTOR TECHNOLOGIES LIMITED, Shenzhen, CN;
Abstract
An optical device (EPE) comprises a waveguide plate (SUB) comprising an in-coupling element (DOE), a first expander element (DOE), a second expander element (DOE) and an out-coupling element (DOE), wherein the out-coupling element (DOE) is arranged to form combined output light (OUT) by combining the first output light (OB) with the second output light (OB), wherein the in-coupling element (DOE) has a first grating period (d) for forming the first guided light (B), and wherein the in-coupling element (DOE) has a second different grating period (d) for forming the second guided light (B), wherein the optical device (EPE) comprises a first spectral filter region (C) to prevent coupling of red light from the in-coupling element (DOE) to the out-coupling element (DOE) via the first expander element (DOE). The optical device (EPE) can display a color image with an extended field of view.