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:
Jul. 22, 2025
Filed:
Aug. 25, 2022
Shenzhen Optiave Display Technology Co., Ltd., Shenzhen, CN;
Shenzhen Optiave Display Technology Co., Ltd., Shenzhen, CN;
Abstract
A display apparatus () for displaying a virtual image (VIMG) comprises: an optical engine (ENG) to form input light (IN), which represents an input image (IMG), an expander device (EPE) to form light beams (B,B) of output light (OUT) by expanding light beams (B,B) of the input light (IN), the expander device (EPE) comprising: a waveguide plate (SUB), a diffractive in-coupling element (DOE) to form first guided light (B) and second guided light (B) by coupling input light (IN) into the waveguide plate (SUB), wherein the display apparatus () comprises a base (BASE) and an actuating mechanism (MOTOR) to cause rotary motion of the expander device () with respect to the base (BASE), wherein an angle (γ) between an optical axis (AX) of the optical engine (ENG) and the axis (AX) of rotation of the expander device () is in the range of 10° to 45°.