System and method for encoded spatio-spectral information processing
First Claim
1. A method for controlling the interaction of radiation with physical objects having at least one material capable of reacting predictably to one or more radiation components in a predetermined spectrum range, comprising the steps of:
- (a) providing a controllable source of radiation capable of generating arbitrary combinations of spectral radiation components within the predetermined spectrum range, a combination of spectral radiation components being defined as a spectral signature; and
(b) irradiating at least one of said physical objects with a predetermined spectral signature from the provided controllable source of radiation to cause the predictable reaction of the material.
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Abstract
Encoded spatio-spectral information processing is performed using a system having a radiation source, wavelength dispersion device and two-dimensional switching array, such as digital micro-mirror array (DMA). In one aspect, spectral components from a sample are dispersed in space and modulated separately by the switching array, each element of which may operate according to a predetermined encoding pattern. The encoded spectral components can then be detected and analyzed. In a different aspect, the switching array can be used to provide a controllable radiation source for illuminating a sample with radiation patterns that have predetermined characteristics and separately encoded components. Various applications are disclosed.
239 Citations
9 Claims
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1. A method for controlling the interaction of radiation with physical objects having at least one material capable of reacting predictably to one or more radiation components in a predetermined spectrum range, comprising the steps of:
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(a) providing a controllable source of radiation capable of generating arbitrary combinations of spectral radiation components within the predetermined spectrum range, a combination of spectral radiation components being defined as a spectral signature; and
(b) irradiating at least one of said physical objects with a predetermined spectral signature from the provided controllable source of radiation to cause the predictable reaction of the material. - View Dependent Claims (2)
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3. A tunable source of radiation, comprising:
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a broad-band radiation source providing a substantially continuous spectrum of radiation components within a predetermined portion of the spectrum;
a wavelength dispersing device spatially dispersing radiation from the source into a series of radiation bands, each corresponding to a particular wavelength; and
a spatial light modulator (SLM) modulating said series of radiation bands individually to generate a tunable output pattern having predetermined characteristics. - View Dependent Claims (4, 5, 6)
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7. A method of analyzing samples of material, comprising the steps of:
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(a) providing a controllable source of radiation capable of generating arbitrary combinations of spectral radiation components within the predetermined spectrum range, a combination of spectral radiation components being defined as a spectral signature; and
(b) irradiating a sample of material with a predetermined spectral signature from the provided controllable source of radiation;
(c) directing radiation from the irradiated sample to one or more detector elements; and
(d) analyzing the output of the detector elements to determine properties of said sample of material.
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8. A device for measuring interaction of electromagnetic radiation with samples of material, comprising:
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a radiation source for irradiating at least one sample of the material with electromagnetic radiation, said source having predetermined characteristics;
means for encoding arbitrary radiation bands from the sample with a unique code;
processing means for processing encoded radiation bands in the analog domain;
detector means receiving input from said processing means and providing on output an indication of the interaction between the electromagnetic radiation from the source with the sample of material. - View Dependent Claims (9)
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Specification