Optical transponder containing identification tag
First Claim
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1. An identification tag comprising:
- a substrate having a dimension from 1 to 500 microns having at least one optical coating scheme selected from a group consisting of;
a bandpass filter comprising at least two bandpass regions and dye molecules;
an information processing mechanism on said substrate and containing a datum;
an interrogating signal receiver for receiving an energy input outside the radiofrequency range and of light ranging from ultraviolet through infrared comprising a signal demodulator and a contained energy storage device, the energy input powering said information processing mechanism and said output signal transmitter; and
an output signal transmitter for communicating said datum external to said substrate as an emission outside the radiofrequency range.
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Abstract
A transponder-equipped ID tag is provided, deriving its power from an incoming interrogating optical signal. The invention relates to a transponder-equipped ID tag that is able to extract power from the incident corresponding interrogation signal and temporarily store it in an internal energy storage device. Optionally, optical transmission is used as either a transmission mode only into the tag or a transmission mode only away from the tag. The inventive optical means of transmission may be combined with either RF transmission into the tag and/or RF transmission away from the tag.
41 Citations
25 Claims
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1. An identification tag comprising:
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a substrate having a dimension from 1 to 500 microns having at least one optical coating scheme selected from a group consisting of;
a bandpass filter comprising at least two bandpass regions and dye molecules;an information processing mechanism on said substrate and containing a datum; an interrogating signal receiver for receiving an energy input outside the radiofrequency range and of light ranging from ultraviolet through infrared comprising a signal demodulator and a contained energy storage device, the energy input powering said information processing mechanism and said output signal transmitter; and an output signal transmitter for communicating said datum external to said substrate as an emission outside the radiofrequency range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An identification tag comprising:
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a substrate having a dimension from 1 to 500 microns having at least one optical coating scheme selected from a group consisting of;
a bandpass filter, dye motecules, and grating scores;wherein said bandpass filter comprises at least two bandpass regions.
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15. A process for reading a passive identification tag comprising the steps of
exposing an identification tag to an input optical signal, said tag comprising: - a substrate having a dimension from 1 to 500 microns having at least one optical coating scheme selected from a group consisting of;
a bandpass filter having at least two bandpass regions and dye molecules;
an information processing mechanism on said substrate and containing a datum;
an interrogating signal receiver for receiving an energy input outside the radiofrequency range and of light ranging from ultraviolet through infrared comprising a signal demodulator and a contained energy storage device, the energy input powering said information processing mechanism and said output signal transmitter; and
an output signal transmitter for communicating said datum external to said substrate as an emission outside the radiofrequency range; andcomparing the spectral reflections from said tag relative to a library of tag optical spectra. - View Dependent Claims (16, 17)
- a substrate having a dimension from 1 to 500 microns having at least one optical coating scheme selected from a group consisting of;
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18. A process for reading a passive identification tag comprising the steps of:
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exposing an identification tag to a monochromatic input optical signal, said tag comprising a substrate having a dimension from 1 to 500 microns having at least one optical coating scheme selected from the group consisting of a bandpass filter, dye molecules, and grating scores; comparing the spectral reflections from said tag relative to a library of tag optical spectra; and applying a first dye with a first finite lifetime to determine temporal labeling. - View Dependent Claims (19)
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20. An information exchange system comprising:
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a reader emitting a laser interrogation signal ranging from ultraviolet through infrared and having an optical receiver; an identification tag comprising; a substrate having a dimension from 1 to 500 microns having at least one optical coating scheme selected from a group consisting of;
a bandpass filter comprising at least two bandpass regions and dye molecules;an information processing mechanism on said substrate and containing a datum; an interrogating signal receiver for receiving the laser interrogation signal; an output signal transmitter for communicating said datum as an optical signal to said optical receiver derives power from the laser interrogation signal for communicating said datum; and a light emitter activated by communicating said datum. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification