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:
Jul. 08, 1997
Filed:
Jun. 06, 1995
Kazutoshi Koie, Tokoname, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A display producing a display image in a vehicle width mark form and an optical path changing device directing the display image to a windshield are mounted on a base. The base is driven by an arc drive portion along an arcuate path with an arc center which is an intersection of a first imaginary sight line and a second imaginary sight line. The imaginary sight lines are reflections of a first and second actual sight lines in which a driver looks at the image position. Since the arc center conjugates the image position, when the display and the optical path changing device move along the arcuate path, the display image projecting on the windshield changes, and therefore, the image does not move up and down from the ground. Further, when a distance between the display and the optical path changing device changes, since the base moves along the arcuate path, the display distance of the image changes and the image moves along the surface of the ground.