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:
Sep. 14, 2021
Filed:
Jan. 26, 2018
Yutou Technology (Hangzhou) Co., Ltd., Hangzhou, CN;
Liang Guan, Hangzhou, CN;
Kun Li, Hangzhou, CN;
YUTOU TECHNOLOGY (HANGZHOU) CO., LTD., Hangzhou, CN;
Abstract
An imaging display system in the field of augmented reality technology comprises a waveguide structure () disposed on an outer surface of an exit surface () of a polarization beam splitter () of an optical engine module (A). The waveguide structure is tubular. One end () of the waveguide structure is connected to the exit surface and together with the exit surface forms a preset angle (α). The other end of the waveguide structure is a free end. The imaging display system expands an eye motion box (EMB) by means of the waveguide structure. The preset angle formed between the waveguide structure and the exit surface causes light () incident on the waveguide structure to undergo total internal reflection inside the waveguide structure. The waveguide structure further comprises a plurality of semi-transmissive and semi-reflective lenses () disposed obliquely in order inside the waveguide structure, and the light incident into the waveguide structure is reflected on the surface of each of the lenses such that the light is uniformly released into viewer's eyes. The imaging display system can realize more compact applications in AR optical systems and provide a larger field of view (FOV) and eye motion box for users.