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:
May. 24, 2022
Filed:
Nov. 01, 2019
Osaka University, Osaka, JP;
Osaka University, Osaka, JP;
Abstract
A pattern changing sheet includes: lenticular lenses in number corresponding to one wavelength of the pattern changing sheet and disposed with the bus-line pitch to in the direction orthogonal to the optical axis; and a pattern layer opposed to the lenticular lenses on the rear face of the lenticular lenses, the pattern layer having a gradation pattern (dots) disposed in the bus-line pitch L. The gradation pattern includes bright dots and dark dots in the bus-line pitch to in the disposing direction. The viewer views the display pattern that is a connection of the corresponding dots of the lenticular lenses depending on the viewpoint position, and the display pattern progresses at a predetermined speed scale-factor of the movement of the viewpoint. This configuration creates and provides a pattern changing sheet having a high degree of freedom and depending on the intended use.