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. 22, 2024
Filed:
Oct. 04, 2021
Denso Corporation, Kariya, JP;
Takahiro Nambara, Kariya, JP;
DENSO CORPORATION, Aichi-pref., JP;
Abstract
A virtual image display device includes a backlight and an image display panel that displays an image to be imaged as a virtual image on a display screen. The backlight has a deflection prism array on an optical path between a light source unit and the image display panel. The deflection prism array includes deflection prism elements to deflect the illumination light, and deflects a direction of an after-transmission vector corresponding to a Poynting vector of the illumination light immediately after passing through the deflection prism array with respect to a direction of a before-transmission vector corresponding to a Poynting vector of the illumination light immediately before passing through the deflection prism array. An angle between a unit normal vector of the display screen and the after-transmission vector is larger than an angle between the unit normal vector of the display screen and the before-transmission vector.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile