发明名称 |
Spatial integrating optical correlator for verifying the authenticity of a person, product or thing |
摘要 |
A method of verifying the authenticity of an object is disclosed employing a spatial integrating optical correlator. An unreadable and hence non-counterfeitable mask (e.g., a. complex mask or a phase mask) is coupled to the object and the optical correlator compares the mask with a reference mask on which it is scanned over. The correlator produces a correlation spot or image having an intensity which exceeds a given level if the mask is genuine. An alternate embodiment includes a fingerprint or other personalized pattern bonded to the mask, and the fingerprint or other personalized pattern on the card is compared to a reference fingerprint or other personalized pattern of the card holder for added security.
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申请公布号 |
US5841907(A) |
申请公布日期 |
1998.11.24 |
申请号 |
US19970890380 |
申请日期 |
1997.07.11 |
申请人 |
THE UNIVERSITY OF CONNECTICUT |
发明人 |
JAVIDI, BAHRAM;MOK, FAI;PSALTIS, DEMETRI |
分类号 |
G06K7/14;G06K9/00;G06K9/74;G07F7/08;(IPC1-7):G06K9/76;G02B27/46 |
主分类号 |
G06K7/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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