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. 04, 2020
Filed:
Feb. 24, 2017
Applicant:
Konica Minolta, Inc., Tokyo, JP;
Inventor:
Eiji Nomura, Kokubunji, JP;
Assignee:
Konica Minolta, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/14 (2006.01); G09G 5/00 (2006.01); G02B 27/01 (2006.01); G03B 21/56 (2006.01); B60K 35/00 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0101 (2013.01); B60K 35/00 (2013.01); G03B 21/56 (2013.01); B60K 2370/1529 (2019.05); B60K 2370/23 (2019.05); G02B 2027/012 (2013.01); G02B 2027/013 (2013.01); G02B 2027/0194 (2013.01);
Abstract
A screen for a head-up display device includes a main body layer sandwiched between a first concave optical surface located at an observation side and a second convex optical surface located at a side opposite to the observation side. A thickness of the main body layer becomes thinner from a center toward a periphery with regard to a lateral direction which is perpendicular to a reference plane, and a variation of the thickness of the main body layer with regard to a vertical direction parallel to the reference plane is different between the central part center and the peripheral part periphery with regard to the lateral direction.