Chemical synthesis using diffraction grating-based encoded optical elements
First Claim
1. An optical identification element having a synthesized chemical attached thereto, comprising:
- an optical substrate;
at least a portion of said substrate being made of a substantially single material and having at least one diffraction grating embedded therein, said grating having a resultant refractive variation within the substantially single material at a grating location;
said grating providing an output optical signal indicative of a code when illuminated by an incident light signal propagating from outside the substrate, said output optical signal being a result of passive, non-resonant scattering from said grating when illuminated by said incident light signal; and
the synthesized chemical being attached to at least a portion of said substrate.
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Accused Products
Abstract
An optical identification element having a synthesized chemical attached thereto includes an optical substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive variation at a grating location, said grating being embedded within a substantially single material of said optical substrate; the grating providing an output optical signal indicative of a code when illuminated by an incident light signal propagating in free space, the code identifying at least one of the element and the chemical, the output signal not being a result of laser action with the grating when illuminated by said incident light signal; and the synthesized chemical being attached to the substrate.
239 Citations
57 Claims
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1. An optical identification element having a synthesized chemical attached thereto, comprising:
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an optical substrate; at least a portion of said substrate being made of a substantially single material and having at least one diffraction grating embedded therein, said grating having a resultant refractive variation within the substantially single material at a grating location; said grating providing an output optical signal indicative of a code when illuminated by an incident light signal propagating from outside the substrate, said output optical signal being a result of passive, non-resonant scattering from said grating when illuminated by said incident light signal; and the synthesized chemical being attached to at least a portion of said substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of synthesizing a chemical on a substrate, comprising:
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obtaining at least one substrate, at least a portion of said substrate being made of a substantially single material, and each having at least one diffraction grating embedded therein, said grating having a resultant refractive variation within the substantially single material at a grating location, said grating providing an output optical signal indicative of a code when illuminated by an incident light signal propagating from outside the substrate, said output optical signal being a result of passive, non-resonant scattering from said grating when illuminated by said incident light signal; and synthesizing the chemical attached to at least a portion of said substrate. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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Specification