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:
Dec. 12, 1995
Filed:
Feb. 08, 1994
Applicant:
Inventors:
Norihito Nakazawa, Yokohama, JP;
Shoichi Takeuchi, Yokohama, JP;
Hiroaki Shimozono, Yokohama, JP;
Yuji Aizawa, Yokohama, JP;
Assignee:
Asahi Glass Company Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G03H / ;
U.S. Cl.
CPC ...
359 13 ; 359 14 ; 359629 ; 359630 ;
Abstract
A hed-up display comprises a light source and a liquid crystal display device for displaying an image, and a hologram arranged on a windshield glass of a vehicle to diffract the light to an observer, wherein the hologram has the half width of the diffraction spectrum so that a white light entering into the vehicle from the outside is diffracted as substantially a white light.