Optical element
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 9, 2017
Grant Date -
Nov 20, 2014
app pub date -
Jul 31, 2014
filing date -
May 9, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An element for protection against forgery and/or copying is arranged on a substrate and includes an optically anisotropic layer which has at least two regions with different optical axes, characterized in that the substrate is a reflective polarizer. The optically anisotropic layer can include cross-linked liquid crystal monomers. The anisotropic layer can be placed on an orientation layer. The orientation layer can be in contact with the polarizer and can include a photo-oriented polymer network. A device for protection against forgery and/or copying is characterized in that an element as set forth above and an analyzer are arranged on the same substrate.
First Claim
Other Claims data not available
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- G02B Class
- 22.62 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 9, 2028 |
