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:
Sep. 01, 1992
Filed:
Sep. 02, 1986
Armin Felske, Wolfsburg, DE;
Bernd Stoffregen, Braunschweig, DE;
Manfred-Andreas Beeck, Gifhorn, DE;
Gerd Sauer, StolbergVenwegen, DE;
Michael Hassiepen, Aachen, DE;
Detlev Rebenstorff, Aachen, DE;
Saint-Gobain Vitrage, D'Alsace, FR;
Abstract
A windshield (1) for motor vehicles provided with a reflecting arrangement (6) for making optical information or signals visible to the driver of the vehicle; said information or signals being made recognizable in the same field of view as is suitable for the observation of traffic and the road ahead by said driver. According to the invention, the reflecting arrangement (6) is a hologram with the characteristic of a mirror. The angle of reflection .alpha. of the holographic mirror is different from the angle of reflection .beta. of the surface of the glass upon which said hologram is mounted. As a result the rays R' reflected from the surface of the glass do not reach the eye (8) of the observer, whereas the rays R reflected from the holographic mirror do. In the case of a bent windshield, a hologram with the function of a flat mirror will be disposed on a carrier layer curved corresponding to the shape of the windshield so that even in the case of bent windshields, the reflected image of the optical signals or information is free of aberrations.