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:
Aug. 12, 2025
Filed:
Jul. 19, 2022
Alps Alpine Co., Ltd., Tokyo, JP;
Katsunari Ashimine, Fukushima, JP;
Hiroki Sato, Miyagi, JP;
ALPS ALPINE CO., LTD., Tokyo, JP;
Abstract
A display device includes a transparent light guiding layer having a bottom face on which a light diffusing region is formed as a design, a retroreflective layer, a polarizing beam that allows light having a first polarization direction to pass therethrough, and an emission unit configured to emit into the light guiding layer the light having the first polarization direction, or light having a different second polarization direction. When light having the first polarization direction is emitted, light reflected by the light diffusing region passes through the polarizing beam splitter such that the design is viewable. When light having the second polarization direction is emitted, light reflected by the retroreflective layer passes through the polarizing beam splitter such that an aerial image of the design is viewable.