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US 8,284,401 B2Granted
Digital filter spectrum sensor
AssigneeNanoLambda, Inc.
InventorsByung Il Choi, Byounghee Lee
Life of this patent
Estimating the term…
Abstract
A spectrum sensing method includes (a) receiving an incident radiation simultaneously through a filter array composed of multiple bandpass filters, (b) digitizing spectral responses of the filter array, and (c) generating an estimate of spectral profile of the incident radiation based on digitized spectral responses of the filter array.
Claims17
A spectrum sensor, comprising:
- a photodetector array;
- an array of optical filters;
- a memory having sampled, quantized and stored in digital format thereon spectral response data of individual filters in the array of optical filters;
- and
- a processing unit, and
- wherein the spectrum sensor has stored thereon processor-executable instructions configured to cause the processing unit to generate an estimated spectral profile of input light based on:
- an output spectral profile generated by the array of optical filters and the photodetector array in response to the input light;
- and
- the spectral response data stored in memory.
6 more elements
A wireless spectrum sensor, comprising:
- at least one spectrum sensor comprising:
- a photodetector array;
- an array of optical filters;
- a memory having sampled, quantized and stored in digital format thereon spectral response data of individual filters in the array of optical filters;
- and
- a processing unit, and;
- wherein the spectrum sensor has stored thereon processor-executable instructions configured to cause the processing unit to generate an estimated spectral profile of input light based on:
- an output spectral profile generated by the array of optical filters and the photodetector array in response to the input light;
- and
- the spectral response data stored in memory;
- at least one light source;
- a wireless communication unit;
- a power unit;
- and
- a holder;
- wherein:
- the wireless communication unit is adapted to send and receive measured spectral data or control data wirelessly to and from an external device;
- the holder connects said spectrum sensor, said light source, and said wireless communication unit, and said power unit electronically;
- the light source unit and spectrum sensor are adapted to send and receive or detect lights using transmission or reflection.
16 more elements
Dependencies are inferred from the claim text.