发明名称 |
AUTHENTICATION SYSTEM, DATA DEVICE, AND METHODS FOR USING THE SAME |
摘要 |
An authentication system may comprise: a first light source, a second light source, and at least three optically filtered light sensing devices for detecting analog emission intensity in a spectral sensitivity range, wherein each light sensing device is in operable communication with the first light source and/or the second light source. The first light source can have a first light source spectral distribution and can be capable of providing sufficient excitation to produce a photoluminescent emission from a medium comprising a luminescent tag and a color. The second light source can have a visible multi-wavelength spectral distribution and can be capable of providing sufficient visible multi-wavelength illumination of the medium to generate a second analog response, wherein the second analog response is different from the photoluminescent emission. Each light sensing device can have a different device spectral sensitivity range which includes at least a portion of the visible multi-wavelength spectral distribution, with the device spectral sensitivity range of at least one of the light sensing devices including at least a portion of a desired photoluminescent emission wavelength range.
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申请公布号 |
US2005236481(A1) |
申请公布日期 |
2005.10.27 |
申请号 |
US20040709208 |
申请日期 |
2004.04.21 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
GASCOYNE DAVID;LAWRENCE BRIAN;MARUVADA SRIRAMAKRISHNA;POTYRAILO RADISLAV;SCHOTTLAND PHILIPPE;SZE MICAH S.;WISNUDEL MARC B. |
分类号 |
G01N21/64;G01N21/95;G06K7/12;G06K19/14;(IPC1-7):G06K7/10;G06K7/14 |
主分类号 |
G01N21/64 |
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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