Integrated sensing system approach for handheld spectral measurements having a disposable sample handling apparatus
First Claim
1. An optical spectral sensing device, for determining properties of a sample, said device comprising:
- an integrated energy source and an integrated spectral sensing detector package having a spectral sensing detector;
a sample chamber or cell, disposed adjacent to said package, and dimensionally designed to match an active area of the spectral sensing detector;
integrated electronics coupled to said package for providing energy for said source and for receiving a signal generated by said spectral sensing detector in response to energy coupled to said detector by said sample chamber or cell, said integrated electronics providing direct output of sample properties of said sample;
said integrated electronics having on-board computer processing with a microcomputer or digital signal processor;
said integrated electronics having on-board data communications including output to at least one of a visual display, communications of results to a process monitoring computer, and an option for wireless communications to a network; and
a sample handling apparatus for disposable sample handling, said apparatus being releasably attached adjacent said package, said sample handling apparatus forming at least a part of said sample chamber or cell to contain said sample, said sample handling apparatus containing an optical path from said energy source to said spectral sensing detector.
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Abstract
An integrated spectral sensing engine featuring energy sources and detectors within a single package that includes sample interfacing optics and acquisition and processing electronics. The miniaturized sensor is optimized for specific laboratory and field-based measurements by integration into a handheld format. Design and fabrication components support high volume manufacturing. Spectral selectivity is provided by either continuous variable optical filters or filter matrix devices. The sensor'"'"'s response covers the range from 200 nm to 25 μm based on various solid-state detectors. The wavelength range can be extended by the use of filter-matrix devices. Measurement modes include transmittance/absorbance, turbidity (light scattering) and fluorescence (emission). On board data processing includes raw data acquisition, data massaging and the output of computed results. Sensor applications include water and environmental, food and beverage, chemical and petroleum, and medical analyses. These can be expanded into various field and consumer-based applications.
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Citations
24 Claims
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1. An optical spectral sensing device, for determining properties of a sample, said device comprising:
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an integrated energy source and an integrated spectral sensing detector package having a spectral sensing detector; a sample chamber or cell, disposed adjacent to said package, and dimensionally designed to match an active area of the spectral sensing detector; integrated electronics coupled to said package for providing energy for said source and for receiving a signal generated by said spectral sensing detector in response to energy coupled to said detector by said sample chamber or cell, said integrated electronics providing direct output of sample properties of said sample; said integrated electronics having on-board computer processing with a microcomputer or digital signal processor; said integrated electronics having on-board data communications including output to at least one of a visual display, communications of results to a process monitoring computer, and an option for wireless communications to a network; and a sample handling apparatus for disposable sample handling, said apparatus being releasably attached adjacent said package, said sample handling apparatus forming at least a part of said sample chamber or cell to contain said sample, said sample handling apparatus containing an optical path from said energy source to said spectral sensing detector. - 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)
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Specification