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:
Apr. 16, 2024
Filed:
Oct. 24, 2018
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
ASAHI KASEI KABUSHIKI KAISHA, Tokyo, JP;
Abstract
To provide an image display device for enabling a polarization axis direction of a reflection type polarizing plate to be identified with simplicity and accuracy, and enabling an adjustment in the polarization reflection axis direction to be made with high accuracy, a wire grid polarizing plate for enabling the polarization axis direction to be examined simply, and the like, a head-up display device () in the present invention is an image display device provided with an image display () that outputs image light which is polarized light, a reflection type polarizing plate () having an reflecting surface () that reflects the image light, and a projection plate () onto which the image light reflected by the reflection type polarizing plate is projected, and is characterized in that the reflection type polarizing plate allows a bright line (B) as an indicator indicative of the polarization axis direction of the reflecting surface to be observed.