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. 28, 2020
Filed:
Feb. 02, 2017
Nippon Seiki Co., Ltd., Niigata, JP;
Kazuo Morohashi, Niigata, JP;
Megumi Sato, Niigata, JP;
NIPPON SEIKI CO., LTD., Niigata, JP;
Abstract
The present invention displays multiple images at different locations in the depth direction, while suppressing a decline in display quality, using projected light emitted from a single projector. A projectoremits first projection light Land second projection light Lthat have a first projection distance P. A projection distance lengthening unithaving a negative refractive power is positioned along the path of the first projection light Lbetween the projectorand a first screen, and causes an image to be formed on the first screenby lengthening the projection distance P of the first projection light L. A projection distance shortening unithaving a positive refractive power is positioned along the path of the second projection light Lbetween the projectorand a second screen, and causes an image to be formed on the second screenby lengthening the projection distance P of the second projection light L