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. 24, 2019
Filed:
Mar. 14, 2018
Coretronic Corporation, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
A HMD device includes an illumination system, a display device, a lens module and a waveguide system. The illumination system includes an aperture stop. The display device converts an illumination beam into an image beam. The waveguide system guides the image beam, and projects the image beam to a projection target. The waveguide system includes a first waveguide element and a second waveguide element. The image beam is projected to the projection target through the lens module, the first and the second waveguide elements, and is converged to a first stop within the first waveguide element. The first stop is located in the first waveguide element. The image beam is projected to a second stop outside the second waveguide element. The second stop is located at the projection target. The illumination beam is converged to a third stop within the illumination system. The aperture stop is located at the third stop.