DEVICE FOR GENERATING ENCRYPTED IMAGES VISIBLE ONLY THROUGH A POLARIZING FILTER AND PROCESS FOR MAKING THE DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
May 31, 2012
app pub date -
Dec 23, 2009
filing date -
Dec 23, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A device (1) for generating encrypted images which are only visible through a polarizing filter (5) oriented in a predetermined direction, comprises: a source (3) of digital information; an LCD screen (2) connected to said source (3) to form on its front face a matrix of chromatic filters which represents images; a polarizing layer (4) oriented in a predetermined direction and located behind a rear face of the LCD screen (2) to intercept a beam of light passing through the LCD screen (2) and oriented towards an observer of the front face.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 11 Citation Count
- G02F Class
- 43.50 % this patent is cited more than
- 13 Age