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:
Mar. 03, 1998
Filed:
Jul. 05, 1996
Yoshihiro Kumagai, Niigata, JP;
Ichiro Matsuzaki, Niigata, JP;
Kuraray Co., Ltd., Kurashiki, JP;
Abstract
A double-faced lenticular lens sheet including at least one incident side lens formed on a first face of the double-faced lenticular lens sheet; and at least one corresponding emergent side lens formed on a second opposite face of the double-faced lenticular lens sheet; wherein light rays incident on the at least one incident side lens parallel to an optical axis thereof pass through the lenticular lens sheet and emerge from the at least one emergent side lens; an angle of refraction .theta.1 is formed by a straight line parallel to an optical axis of the at last one incident side lens and a light ray refracted by an incident plane passing through the lenticular lens sheet; an angle of refraction .theta.2 is formed by a straight line parallel to an optical axis of the at least one emergent side lens and the light ray refracted by and emitted from an emergent plane; .DELTA..theta.1 is an absolute value of the angle of refraction .theta.1 on the incident plane; .DELTA..theta.2 is an absolute value of an angle of refraction given by (.theta.2-.theta.1) on the emergent plane; a ratio between .DELTA..theta.1 and .DELTA..theta.2 given by (.DELTA..theta.2/.DELTA..theta.1) is 1.0 or more when a center of the lenticular lens sheet rests on the optical axis of the at least one incident side lens and a width of the lenticular lens sheet is 80% or less of the lens pitch of the at least one incident side lens.