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:
Apr. 27, 1999
Filed:
Feb. 06, 1995
Applicant:
Inventors:
Yasuhiro Mizutani, Inabe-gun, JP;
Minoru Ohta, Okazaki, JP;
Toshiki Saburi, Inazawa, JP;
Tetsuya Kato, Okazaki, JP;
Hiroyuki Tatebayashi, Handa, JP;
Assignee:
Nippondenso Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03H / ; G02B / ;
U.S. Cl.
CPC ...
359 13 ; 359-1 ; 359 15 ;
Abstract
A plurality of hologram elements are simultaneously exposed to a constructing light while they are arranged in the form of a stack, so that the incident beam can be uniform within the exposure area. The plurality of hologram elements should be transparent to the constructing light.