Optical sensor and device therewith, and method for the production thereof
First Claim
1. An optical sensor for determining at least one parameter in a medium, the sensor comprising at least one matrix that has opposite first and second surfaces and that contains at least one fluorescent dye;
- a transparent substrate on the first surface of the matrix and supporting the matrix; and
a precious metal layer on the second surface of the matrix opposite the transparent substrate and facing the medium, the second surface of the matrix being an uneven surface with peaks and valleys defining a peak-to-valley height larger than a thickness of the precious metal layer so that the precious metal layer does not completely close off the matrix.
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Accused Products
Abstract
An optical sensor is provided with reduced sensitivity toward external light influences, fluorophores, and radiation, more particularly gamma radiation. The sensor is suitable for determining at least one parameter in a medium. The sensor has a matrix that contains a fluorescent dye. The matrix is supported by a transparent substrate and has a precious metal layer on the side facing the medium. The precious metal layer provides protection against photobleaching and radiation. The optical sensor is suitable for implementation in containers and laboratory products that are sterilized by gamma radiation, such as disposable bioreactors.
9 Citations
30 Claims
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1. An optical sensor for determining at least one parameter in a medium, the sensor comprising at least one matrix that has opposite first and second surfaces and that contains at least one fluorescent dye;
- a transparent substrate on the first surface of the matrix and supporting the matrix; and
a precious metal layer on the second surface of the matrix opposite the transparent substrate and facing the medium, the second surface of the matrix being an uneven surface with peaks and valleys defining a peak-to-valley height larger than a thickness of the precious metal layer so that the precious metal layer does not completely close off the matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a transparent substrate on the first surface of the matrix and supporting the matrix; and
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12. A device for holding a medium, with an optical sensor for determining at least one parameter in the medium, wherein the optical sensor has at least one matrix that has opposite first and second surfaces and that contains at least one fluorescent dye;
- a transparent substrate on the first surface of the matrix and supporting the matrix; and
a precious metal layer on the second surface of the matrix opposite the transparent substrate and facing the medium, the second surface of the matrix being an uneven surface with peaks and valleys defining a peak-to-valley height larger than a thickness of the precious metal layer so that the precious metal layer does not completely close off the matrix. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- a transparent substrate on the first surface of the matrix and supporting the matrix; and
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24. A method for producing an optical sensor comprising the steps of:
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applying a matrix with at least one fluorescent dye onto a transparent substrate so that a surface of the matrix facing away from the transparent surface is uneven with peaks and valleys defining a peak-to-valley height; and applying a precious metal layer onto the surface of the matrix facing away from the transparent substrate, the precious metal layer having a thickness less than the peak-to valley height on the surface of the matrix so that the precious metal layer does not completely close off the matrix. - View Dependent Claims (25)
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26. A method for producing a device for holding a medium and comprising the steps of:
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providing an optical sensor for determining at least one parameter of the medium, the optical sensor having a transparent substrate, at least one matrix that contains a least one fluorescent dye disposed on the transparent substrate, a surface of the matrix facing away from the transparent surface being uneven with peaks and valleys defining a peak-to-valley height and a precious metal layer on the surface of the matrix opposite the substrate, the precious metal layer having a thickness less than the peak-to valley height on the surface of the matrix so that the precious metal layer does not completely close off the matrix; combining the optical sensor with the device for holding the medium; and irradiating the device with the radiation, wherein the sensor maintains its functionality after the irradiation. - View Dependent Claims (27, 28, 29, 30)
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Specification