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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.:

US 11650419 B1

PDFFull Text
Date of Patent:
May. 16, 2023

Filed:

Oct. 16, 2018

Head-up display apparatus

Applicant:

Nitto Denko Corporation, Ibaraki, JP;

Inventors:

Takehito Fuchida, Ibaraki, JP;

Yoshiaki Asanoi, Ibaraki, JP;

Katsunori Takada, Ibaraki, JP;

Assignee:

NITTO DENKO CORPORATION, Ibaraki, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Ryan D Howard

Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 27/01 (2006.01); B60K 35/00 (2006.01); C07C 245/12 (2006.01); C09B 31/08 (2006.01); G02B 1/04 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0101 (2013.01); B60K 35/00 (2013.01); C07C 245/12 (2013.01); C09B 31/08 (2013.01); G02B 1/04 (2013.01); G02B 5/3083 (2013.01); B60K 2370/1529 (2019.05); B60K 2370/23 (2019.05);
Abstract

Provided is a head-up display apparatus that is excellent in viewability when a display screen is viewed through a pair of polarized sunglasses, and is excellent in heat resistance. The head-up display apparatus includes: a display unit configured to output projection light; at least one reflector configured to reflect the projection light; a housing, which has an opening portion, and is configured to store the display unit and the reflector therein; a cover member configured to cover the opening portion; and a polarizing plate arranged on a housing inner side of the cover member. The cover member has an in-plane retardation Re(550) of 3,000 nm or more. The head-up display apparatus is configured so that an angle of reflection of the projection light output from the housing through the opening portion with respect to a windshield is 30° or less, or is 40° or more.

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