Diffraction gratings used as identifying markers

Deason, Vance A; Ward, Michael B

Title: Diffraction gratings used as identifying markers

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Abstract

A finely detailed defraction grating is applied to an object as an identifier or tag which is unambiguous, difficult to duplicate, or remove and transfer to another item, and can be read and compared with prior readings with relative ease. The exact pattern of the defraction grating is mapped by diffraction moire techniques and recorded for comparison with future readings of the same grating.

Inventors:

Deason, Vance A ^[1]; Ward, Michael B ^[1]

Idaho Falls, ID

Issue Date:: 1991-01-01

Research Org.:: EG & G IDAHO INC

OSTI Identifier:: 867757

Patent Number(s):: 5003600

Assignee:: United States of America as represented by Department of Energy (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G - PHYSICS G06 - COMPUTING G06K - RECOGNITION OF DATA

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G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
G02B5/1861 - {Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials

G - PHYSICS G06 - COMPUTING G06K - RECOGNITION OF DATA
G06K19/06009 - {with optically detectable marking
G06K19/16 - the marking being a hologram or diffraction grating
G06K2019/06271 - {Relief-type marking}

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DOE Contract Number:: AC07-76ID01570

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: diffraction; gratings; identifying; markers; finely; detailed; defraction; grating; applied; identifier; tag; unambiguous; difficult; duplicate; remove; transfer; item; compared; prior; readings; relative; ease; exact; pattern; mapped; moire; techniques; recorded; comparison; future; diffraction grating; diffraction moire; diffraction gratings; /380/235/250/342/359/365/

Citation Formats


                    Deason, Vance A, and Ward, Michael B. Diffraction gratings used as identifying markers.  United States: N. p., 1991. 
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                    Deason, Vance A, & Ward, Michael B. Diffraction gratings used as identifying markers.  United States.

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                    Deason, Vance A, and Ward, Michael B. Tue .  
        "Diffraction gratings used as identifying markers".  United States.  https://www.osti.gov/servlets/purl/867757.

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@article{osti_867757,

  title        = {Diffraction gratings used as identifying markers},

  author       = {Deason, Vance A and Ward, Michael B},

  abstractNote = {A finely detailed defraction grating is applied to an object as an identifier or tag which is unambiguous, difficult to duplicate, or remove and transfer to another item, and can be read and compared with prior readings with relative ease. The exact pattern of the defraction grating is mapped by diffraction moire techniques and recorded for comparison with future readings of the same grating.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1991},

  month        = {1}

}

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