AUTHENTICITY PROVING OPTICAL STRUCTURE, AUTHENTICATING PROOF RECORDING MEDIUM AND AUTHENTICITY CERTIFYING METHOD
Patent №
US 7,885,481
Granted
2011-02-08
Filed 2004
Owner
DAI NIPPON PRINTING CO., LTD.
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
10491416
An optical structure 3 having a plurality of minute optical unit areas 4 is formed on a base 2. Each of the minute optical unit areas 4 has a plurality of minute areas A and B storing depth information representing multiple-valued phase information about a Fourier transformation image obtained through the Fourier transformation of an original image. In another embodiment of the present invention, the two adjacent minute optical unit areas 4 have a plurality of minute areas A and B storing depth information representing multiple-valued phase information about Fourier transformation images obtained through the Fourier transformation of different original images, respectively.
AI classification
Ownership
DAI NIPPON PRINTING CO., LTD.
assignment · 148570585
Assignors
SUZUKI, SHIN-ICHIRO
On an employer assignment, the assignors are typically the inventors.