Device and method for determining a concentration in a sample
First Claim
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1. A device for optical detection of analytes in a sample, the device comprising:
- a contact surface that can be brought into contact with the sample or which can be brought into contact with a fluid or a gas that allows photons to pass therethrough so as to get to the sample, and the contact surface comprises at least a first and a second material wherein the first material is at least partially transparent for photons, the second material is either non-transparent or at least less transparent for photons;
at least a first, a second and a third optical emitter that are disposed on a plane as a non-linear arrangement;
at least a first, a second and a third optical detector that are disposed on the plane as a non-linear arrangement;
at least a first pair of optoelectronic components and a second pair of optoelectronic components with each pair of optoelectronic components comprising;
one of the first, second or third emitters and one of the first, second or third detectors, wherein at least one of the optoelectronic components of the second pair is different than the optoelectronic components of the first pair;
wherein,at least one of the optoelectronic components of the first pair is oriented to dominantly emit or detect photons in a direction which is perpendicular to either the contact surface or the plane on which the optoelectronic components are disposed, andat least one of the optoelectronic components of the second pair is oriented to dominantly emit or detect photons in a direction which is either,parallel to the plane on which the optoelectronic components are disposed, ornot parallel to the plane on which the optoelectronic components are disposed and not perpendicular to any of two surfaces which are the contact surface and the plane on which the optoelectronic components are disposed.
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Abstract
A device for optical detection of analytes in a sample includes at least two optoelectronic components. The optoelectronic components include at least one optical detector configured to receive a photon and at least one optical emitter configured to emit a photon. The at least one optical emitter includes at least three optical emitters disposed in a flat, non-linear arrangement, and the at least one optical detector includes at least three optical detectors disposed in a flat, non-linear arrangement. The at least three optical emitters and the at least three optical detectors include at least three different wavelength characteristics.
45 Citations
25 Claims
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1. A device for optical detection of analytes in a sample, the device comprising:
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a contact surface that can be brought into contact with the sample or which can be brought into contact with a fluid or a gas that allows photons to pass therethrough so as to get to the sample, and the contact surface comprises at least a first and a second material wherein the first material is at least partially transparent for photons, the second material is either non-transparent or at least less transparent for photons; at least a first, a second and a third optical emitter that are disposed on a plane as a non-linear arrangement; at least a first, a second and a third optical detector that are disposed on the plane as a non-linear arrangement; at least a first pair of optoelectronic components and a second pair of optoelectronic components with each pair of optoelectronic components comprising; one of the first, second or third emitters and one of the first, second or third detectors, wherein at least one of the optoelectronic components of the second pair is different than the optoelectronic components of the first pair;
wherein,at least one of the optoelectronic components of the first pair is oriented to dominantly emit or detect photons in a direction which is perpendicular to either the contact surface or the plane on which the optoelectronic components are disposed, and at least one of the optoelectronic components of the second pair is oriented to dominantly emit or detect photons in a direction which is either, parallel to the plane on which the optoelectronic components are disposed, or not parallel to the plane on which the optoelectronic components are disposed and not perpendicular to any of two surfaces which are the contact surface and the plane on which the optoelectronic components are disposed. - View Dependent Claims (2)
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3. A device for optical detection of analytes in a sample, the device comprising:
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a contact surface that can be brought into contact with the sample or which can be brought into contact with a fluid or a gas that allows photons to pass therethrough so as to get to the sample, and the contact surface comprises at least a first and a second material wherein the first material is at least partially transparent for photons, the second material is either non-transparent or at least less transparent for photons; at least a first, a second and a third optical emitter that are disposed on a plane as a non-linear arrangement, and the first, the second or the third optical emitter are configured so that their respective emitted photons, directly after passing through the contact surface for the first time after being emitted, comprise a directional characteristic, that describes which quantity of light is emitted in which directions; at least a first, a second and a third optical detector that are disposed on the plane as a non-linear arrangement, and the first, the second or the third optical detector comprise a directional characteristic, that describes which quantity of light is receivable from which directions, the directions being determined directly before photons pass through the contact surface for the last time before being detected by the respective detector; at least a first pair of optoelectronic components and a second pair of optoelectronic components with each pair of optoelectronic components comprising; one of the first, second or third emitters and one of the first, second or third detectors, wherein at least one of the optoelectronic components of the second pair is a different optoelectronic component than the optoelectronic components of the first pair; and a wavelength characteristic for the first and second pair of optoelectronic components which is defined by that intensity of light for each wavelength of light that the optical emitter of the respective pair emits and which passes through the contact surface into the sample, and that relative portion of the photons that exit the sample and pass through the contact surface at a point and with a direction so they can be detected by the detector, that is detected by the respective optical detector for each wavelength, with the first pair and the second pair having the same wavelength characteristic; wherein, the directional characteristic of the emitter of the first pair of optoelectronic components is different from the directional characteristic of the emitter of the second pair of optoelectronic components or the directional characteristic of the detector of the first pair of optoelectronic components is different from the directional characteristic of the detector of the second pair of optoelectronic components or the directional characteristics of both the emitters and the detectors of the first and second pairs are different, and the directional characteristics of two optoelectronic components are considered different if the quantity of light for the different directions is different, wherein the directions are determined by the angle between the direction of photon propagation and a line perpendicular to the contact surface and the angle between a projection onto the contact surface of direction of photon propagation and a projection onto the contact surface of a straight line connecting the respective optoelectronic component with the other optoelectronic component of the respective pair of optoelectronic components. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 21, 22, 23, 24, 25)
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14. A method for optical detection of analytes in a sample comprising:
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using at least three emitters to emit photons into the sample so that the photons travel through the sample and interact with the sample in at least one of three ways, the first way is photons get scattered by the sample, the second way is photons get absorbed by the sample and the third way is the photons initiate luminescence; using at least three detectors to detect at least a part of the photons which exit from the sample; using at least a first measurement combination of one of the at least three emitters and one of the at least three detectors, and a second measurement combination of one of the at least three emitters and one of the at least three detectors, wherein at least one of the emitter and the detector of the second measurement combination is not the emitter or the detector of the first measurement combination, wherein, each of the first and second measurement combinations, are configured such that photons are generated as a result of activating the respective emitter of the measurement combination, and the photons propagate through the sample, and a portion of the photons are detected by the respective detector of the measurement combination and have a spatial probability of being present in a volume in the sample, and there is a difference between the spatial probability of the portion of the photons for the first measurement combination and the spatial probability of the portion of the photons for the second measurement combination, which has the effect of a larger amount of information on the analyte in the sample being available than from a single measurement combination; and selecting directional characteristics that cause the difference in the spatial probability of photons of a specific wavelength between the first measurement combination and the second measurement combination, wherein, the directional characteristic for each emitter describes how many photons propagate in which directions directly before they enter the sample, and the directional characteristic for each detector describes what portion of arriving photons the respective detector is capable of detecting from which directions, with the directions being determined directly after photons exit the sample. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification