FLAT CONCAVE MICRO LENS FOR SECURITY AS AN INTEGRATED FOCUSING ELEMENT
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
May 5, 2016
app pub date -
Apr 27, 2015
filing date -
Nov 4, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
An optical security element for currency or other products. The security element includes a film or substrate and an image element provided on an exterior surface of this substrate. The substrate is formed of a transparent material. A concave focusing element is formed upon the opposite side or surface of the substrate, with a focusing substrate with a first side abutting the substrate and a second side facing away from the substrate. Concave lenses are provided in this second side of the concave focusing element. The optical security element includes an outer layer formed of a transparent material that is applied so as to cover the concave focusing element and to “fill in” the concave lenses. The materials, e.g., a polyester or polypropylene, are chosen for the optical security element such that the concave focusing element has an index of refraction that is lower than that of the outer layer.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully