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:
Mar. 03, 2026
Filed:
Jun. 27, 2022
Huawei Technologies Co., Ltd., Shenzhen, CN;
Beijing Institute of Technology, Beijing, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Beijing Institute of Technology, Beijing, CN;
Abstract
A diffractive image combiner is provided, to increase an exit pupil dimension, thereby improving user experience. The diffractive image combiner includes a first diffractive optical element (DOE) and a second DOE. The first DOE is parallel to the second DOE. A grating vector of a first incidence point in the first DOE is the same as a grating vector of a second incidence point in the second DOE. The first incidence point is used to convert an incident light ray that meets a Bragg condition into a first diffracted light ray and a first transmitted light ray. The first transmitted light ray is incident to the second incidence point. The second incidence point is used to convert the first transmitted light ray into a second diffracted light ray.