WO2022223397A1 - Sensor und sensorvorrichtung zum ermitteln einer strahlungsdosis, auslesevorrichtung zum auslesen eines sensors und ein verfahren zum ermitteln von einer strahlungsdosis - Google Patents
Sensor und sensorvorrichtung zum ermitteln einer strahlungsdosis, auslesevorrichtung zum auslesen eines sensors und ein verfahren zum ermitteln von einer strahlungsdosis Download PDFInfo
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- WO2022223397A1 WO2022223397A1 PCT/EP2022/059880 EP2022059880W WO2022223397A1 WO 2022223397 A1 WO2022223397 A1 WO 2022223397A1 EP 2022059880 W EP2022059880 W EP 2022059880W WO 2022223397 A1 WO2022223397 A1 WO 2022223397A1
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Classifications
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- G—PHYSICS
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- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/10—Luminescent dosimeters
- G01T1/105—Read-out devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/48—Photometry, e.g. photographic exposure meter using chemical effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/58—Photometry, e.g. photographic exposure meter using luminescence generated by light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/10—Luminescent dosimeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/005—Details of radiation-measuring instruments calibration techniques
Definitions
- Sensor and sensor device for determining a radiation dose readout device for reading out a sensor and a method for determining a radiation dose
- Various embodiments relate to a sensor and a sensor device for determining a radiation dose, a readout device for reading out a sensor and a method for determining a radiation dose.
- measuring a dose of electromagnetic radiation of different wavelengths can be important in industry and research.
- Modern technologies for example in medicine, environment and life science, disinfection and production, can use ultraviolet (UV) radiation in addition to infrared radiation and visible light.
- UV radiation ultraviolet
- the measurement technology with which radiometric parameters can be determined, can form the basis for any application of modern technologies. Exact quantification enables documentation and optimization of technical processes.
- small and electronics-free measuring strips can be used to determine the radiometric parameters.
- the gages may be advantageous over other gage systems, for example, due to specific space challenges, such as limitations of insufficient space and/or complicated three-dimensional structures.
- the measuring strips can be used easily in a wide variety of geometries and systems, for example to measure various parameters of electromagnetic radiation quickly and with spatial resolution.
- the measuring strips can have a sensor surface with a phosphorescent material, for example. If, for example, the radiation introduced exceeds a threshold value at a specific point on the sensor surface, the phosphorescence can be activated.
- the threshold value can be set via the material parameters of the sensor. This enables threshold value measurements, for example, since the phosphorescence of an irradiated area is only activated from the point of irradiation with a threshold value, also referred to as the minimum value.
- the measurement of absolute dose values can be made possible, for example, by generating a gradient of the threshold value in the sensor, or by covering the sensor with a gradual neutral density filter. A digital readout of the determined dose value is then possible, for example, by means of a sensor array or a displaceable strip detector arrangement. For example, one-dimensional or multi-dimensional measuring strips can also be read out in this way.
- the measuring strips can have a radiation-sensitive dye.
- the dye can reduce the transmission of the strip with increasing irradiation.
- the measuring strip can gradually change its color under UV radiation.
- a UV radiation measurement can thus be implemented directly on a relevant object, for example.
- the color change or a color difference can be determined by means of an additional measuring device. Thereby For example, a quantitative determination of the UV radiation or a radiation dose can be determined.
- the determination can be influenced by weak color contrasts, by being influenced by environmental influences, by storage conditions, and/or by interference radiation.
- the gages of these concepts and systems may not be reusable.
- a sensor device and a method are provided that can enable an absolute value of a radiant intensity and/or an irradiance and/or a specific radiation and/or a radiant energy and/or an irradiation to be determined using a readout device .
- a gage that can be reused is provided.
- a measuring strip which can have increased robustness with respect to environmental influences and/or interference radiation and/or storage conditions.
- a readout method or a readout device which can have a simple and robust readout technique.
- a sensor for determining a radiation dose comprising: an organic material, the organic material having a radiation dose-dependent light emission characteristic such that a characteristic light emission is generated by the organic material as soon as the organic material has accumulated a radiation dose, which is greater than a characteristic limit radiation dose, wherein the sensor is further set up in such a way that a difference between the characteristic limit radiation dose and a radiation dose accumulated in the material represents a radiation dose to be determined.
- a sensor device for determining a radiation dose is provided, the sensor device having a first sensor according to any one of claims 1 to 5, and a second sensor according to any one of claims 1 to 5.
- a readout device for reading out a sensor device according to one of claims 1 to 6 is provided, wherein the organic material of the sensor has a measurement dose, the readout device having: an additional radiation source for irradiating the sensor with an additional dose, the additional dose on the sensor accumulated radiation dose, an output device for outputting the additional dose.
- a method for determining a measurement dose accumulated in an organic material of a sensor comprising applying an additional dose until the organic material of the sensor generates the characteristic light emission, and outputting the additional dose, which represents the accumulated radiation dose of the sensor.
- a method is clearly provided that allows absolute radiometric values of incident radiation to be determined. For example, an absolute value of a radiation intensity, an irradiance, a specific radiation, a radiation energy, an exposure and/or the measurement dose can be determined. For example, the radiometric values can be determined using a determined radiation dose.
- a method and a sensor are provided that allow a radiation dose (a so-called measurement dose) to be determined that is below a characteristic limit dose.
- a method and a sensor are thus clearly provided which enable the measurement of a dose range.
- the dose range can be the entire range below the characteristic limit dose.
- the measured dose can be determined as a continuous variable within the dose range.
- a higher measurement resolution can be achieved with regard to a predefined measurement area, since the measurement described here is continuous in the area below the limit dose, conventional measuring strips, on the other hand, usually only offer a very rough, discrete measurement division. It is thus possible to dispense with the generation of a gradient or the provision of a plurality of sensors for determining an unknown dose. This can also simplify the production of such sensors.
- the measurement dose can be determined, for example, using a greatly simplified readout technique compared to conventional systems.
- a single photodiode e.g. a punctiform photodiode, can be used as a readout detector.
- a simple and robust readout method is provided in various embodiments, in which the additional dose can be applied, for example, with a simple light-emitting diode (LED, e.g., a UV-LED).
- LED simple light-emitting diode
- 1A shows a phosphorescence dose diagram with a radiation dose-dependent light emission characteristic of an organic material
- 1B and 1C each show a schematic view of a sensor device
- FIGS. 2A-2C each show a schematic view of a sensor device having a reduction unit
- FIG. 6 is a schematic diagram of the phosphorescence of a sensor; and FIG. 7 shows a schematic method for determining a radiation dose.
- a sensor device for detecting electromagnetic radiation can be set up to interact with electromagnetic radiation, for example to detect the electromagnetic radiation.
- materials described herein may exhibit light emission. Light emission can be understood here as the emission of electromagnetic radiation. A characteristic light emission is a material-specific light emission, which is explained in more detail with reference to FIG.
- the electromagnetic radiation described herein which can be referred to as radiation for short, can have different wavelength ranges.
- the electromagnetic radiation may be ionizing radiation (e.g., X-rays or gamma rays), and/or ultraviolet (UV) radiation, and/or extreme ultraviolet (EUV) radiation, and/or visible light, and/or infrared (IR) radiation. Radiation) have or be.
- the ionizing radiation can have one or more wavelengths in a range from 10 pm to 10 nm.
- the ionizing radiation can have one or more energies in a range from 100 eV to 100 keV.
- the UV radiation can have one or more of the following ranges in whole or in part: EUV radiation from 10 nm to 100 nm, UVC radiation from 100 nm to 280 nm, and/or UVB radiation from 280 nm to 315 nm, and/or UVA-II radiation from 315 nm to 340 nm, and/or UVA-I radiation from 340 nm to 400 nm.
- the visible light can have one or more of the following ranges in whole or in part: violet from 380 nm to 420 nm, and/or blue from 420 nm to 490 nm, and/or green from 490 nm to 575 nm, and/or yellow from 575 nm to 585 nm, and/or orange from 585 nm to 650 nm, and /or red from 650 nm to 780 nm.
- IR radiation can have one or more of the following ranges in whole or in part: IR-A radiation from 780 nm to 1400 nm, and/or IR-B radiation from 1400 nm to 3000 nm, and/or IR-C radiation from 3000 nm to 1 mm.
- the electromagnetic radiation can have one or more wavelengths.
- the respective wavelengths can be selected from one or more ranges of the ranges described above.
- a selection of one or more wavelengths may be referred to as a light spectrum, wavelength spectrum, or a spectrum for short.
- a light source can for example, have an emission spectrum (a so-called characteristic emission spectrum), ie the light source can emit radiation with one or more specific or known wavelengths.
- a sensor can, for example, have a detection spectrum (a so-called characteristic detection spectrum), ie the sensor can detect radiation with one or more specific wavelengths better than radiation with one or more specific other wavelengths.
- a detector can have a characteristic detection spectrum, for example.
- the electromagnetic radiation can have a radiation intensity, which can also be referred to below as intensity for short.
- a surface power density of the electromagnetic radiation can be referred to as intensity.
- a first intensity of radiation may be less than a second intensity of the same radiation (i.e., of the same spectrum).
- the second intensity can produce a brighter visual impression than the first intensity.
- the second intensity can deposit more energy in a medium than the first intensity (e.g. at the same time and at the same wavelength).
- a sensor device that can be used to measure a radiation dose of electromagnetic radiation.
- the sensor device can have a sensor.
- the sensor may include an organic material.
- the organic material can be, for example, PhenDPA (suitable, for example, for radiation in a wavelength range from 250 nm to 420 nm), PhenTPA (suitable, for example, for radiation in a wavelength range from 250 nm to 420 nm), Tetra-N-phenylbenzidine (suitable, for example, for radiation in a wavelength range from 250 nm to 390 nm), N,N'-di(1-naphthyl)-N,N'-diphenyl-(1,1'-biphenyl)-4,4'-diamine (suitable e.g.
- Thianthrene suitable e.g. for radiation in a wavelength range from 250 nm to 400 nm
- Thianthrene suitable e.g. for radiation in a wavelength range from 250 nm to 350 nm
- Benzophenone-Thianthrene suitable e.g. for radiation in a wavelength range from 220 nm to 400 nm
- Bromo-Benzophenone- Thianthrenes suitable e.g. for radiation in a wavelength range from 220 nm to 400 nm
- benzophenone-2-thianthrenes suitable e.g. for ionizing radiation (e.g. X-rays or gamma radiation), and/or suitable e.g.
- the organic material can be selected, for example, from the group of the following compounds:
- R1, R2 and R3 can be the same or different from each other.
- R1 can be substituted or unsubstituted aryl or substituted or unsubstituted heteroaryl or substituted or unsubstituted alkyl or substituted or unsubstituted heteroalkyl or hydrogen.
- R2 can be substituted or unsubstituted aryl or substituted or unsubstituted heteroaryl or substituted or unsubstituted alkyl or substituted or unsubstituted heteroalkyl or hydrogen.
- R3 can be a substituted or unsubstituted alkyl or a substituted or unsubstituted heteroalkyl or hydrogen or a nitro group.
- R3 can be selected from the group H, OR4 or NO2.
- R4 can be H or (C1 - C8)alkyl.
- R5 can be either H, a halogen, or a thianthrene.
- it can be XP or N.
- Y1, Y2, Y3 and Y4 can each be independently selected from C or N, where either two or four of Y1, Y2, Y3 and Y4 can be N.
- Z1 and Z2 can be chosen independently of each other.
- Z1 can be either an enol or sulfoxide.
- Z2 can be absent or a heteroatom or selected from the group consisting of -NR4.
- the organic material can be sensitive to one or more ranges of electromagnetic radiation.
- the organic material may interact more strongly with one or more wavelengths than with one or more other wavelengths.
- An organic material can have a characteristic detection spectrum, for example.
- the one or more regions may be contiguous or separate from one another.
- the one or more regions can have one or more wavelengths, which can be selected from the UV radiation range, and/or the visible light, and/or the IR radiation range.
- the organic material can be set up to interact with the electromagnetic radiation.
- a radiation dose can be introduced or deposited in the organic material as a result of the interaction.
- the radiation dose can be normalized to an irradiated area. For example, an area that has been irradiated with more than 10% of a maximum dose, e.g. with more than 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, can be referred to as an irradiated area %, 97.5%, or greater than 99% of the maximum dose.
- the radiation dose can also be referred to below as dose for short.
- the dose can be accumulated by the organic material. For example, the accumulated dose can be stored in the organic material for a longer period of time, e.g., more than 1 hour, more than 2 hours, more than 12 hours or more than 1 day.
- the organic material can be set up to luminesce, for example to phosphoresce.
- the organic material may have a threshold dose, which may also be referred to as a characteristic limit dose.
- the organic material can exhibit a characteristic light emission when the accumulated dose is equal to the characteristic limit dose.
- the organic material may have a radiation dependent, e.g., radiation dose dependent, light emission characteristic.
- a characteristic light emission can be generated from the organic material once the organic material has accumulated a dose equal to the characteristic limit dose.
- An increase in light emission, for example from an intensity of the emitted electromagnetic radiation can be referred to as characteristic light emission.
- the characteristic limit dose of an organic material of a sensor can also be referred to below as the characteristic limit dose of the sensor device or of the sensor.
- FIG. 1A shows a phosphorescence dose diagram.
- An accumulated dose of an organic material from a sensor 110 is represented on a horizontal axis 142 .
- An intensity of a light emission is shown on the vertical axis 141 .
- the intensity can be related to a specific wavelength.
- the intensity can be related to a number of wavelengths, eg an average value of the number of wavelengths or a sum of intensities of the number of wavelengths.
- a profile of an intensity 131 of the light emission as a function of an accumulated dose can also be referred to as a light emission characteristic.
- the light emission of the organic material can be increased.
- the light emission can be phosphorescence.
- the light emission can be a characteristic light emission.
- the intensity 131 of the light emission can be less than or equal to a first intensity 161.
- a dose accumulated by the organic material can be smaller than a lower limit dose 171.
- the intensity 131 of the light emission can be equal to or greater than a second intensity 162.
- a dose accumulated by the organic material can be greater than an upper limit dose 173.
- the second intensity 162 can be more than a factor of 1.2 (e.g. 2, 5, 10, 15 or more than a factor 15) can be greater than the first intensity 161.
- the intensity 131 of the light emission in the third dose range can essentially reach maximum intensity.
- a substantially maximum intensity may be an intensity greater than 95% of a maximum attainable intensity, e.g., greater than 96%, 97%, 98%, 99%, or greater than 99.9% of the maximum attainable intensity.
- a substantially maximum intensity may increase or decrease only slightly (e.g., less than 5%) when the accumulated dose is increased by more than 10% (e.g., more than 15%, 20%, or 25%).
- a second dose range 152 which can also be referred to as a limit range
- the intensity 131 of the light emission can increase from the first intensity 161 to the second intensity 162.
- the characteristic limit dose 172 at which characteristic light emission can be triggered can be within the second dose range.
- the characteristic limit dose 172 can be determined based on the second intensity or a maximum intensity 131 of the light emission.
- the characteristic limit dose 172 can be a dose at which the intensity 131 of the light emission reaches a certain proportion of the second and/or a maximum intensity.
- the characteristic limit dose 172 can be determined using an inflection point of the intensity 131 of the light emission.
- the characteristic limit dose 172 can be a dose at which the increase in the intensity 131 of the light emission is at a maximum.
- the characteristic limit dose 172 can be determined using a difference between the lower limit dose 171 and the upper limit dose 173 .
- the characteristic limit dose 172 can be an average of the upper limit dose 173 and lower limit dose 171, eg an arithmetic mean, a geometric mean, a harmonic mean, a median, or a weighted mean.
- the characteristic limit dose 172 can be equal to the upper limit dose 173 and/or lower limit dose 171 .
- the second dose range 152 can only have the characteristic limit dose 171 .
- the increase in the intensity 131 of the light emission in the second dose range from the first intensity 161 to the second intensity 162 can be referred to as the characteristic light emission.
- the characteristic light emission can be a sudden increase from the first intensity 161 to the second intensity 162 .
- the characteristic light emission can be a greater increase in the intensity 131 of the light emission than the increase in the intensity 131 of the light emission in the first or in the third region, for example by more than a factor of 2, 5, 10 or 20.
- the light emission in the third region can be referred to as phosphorescence, for example.
- An organic material having a light emission characteristic as shown in FIG. 1A can be referred to as a phosphorescent organic material.
- a sensor device for measuring a dose of electromagnetic radiation can have a measuring strip.
- a measuring strip For example, only one sensor can be arranged on a measuring strip. If it makes sense, several sensors could also be arranged on one measuring strip, for example for redundant measurement, or by means of appropriate covering when irradiating the sensors, also for several successive measurements.
- the 1B shows a sensor device 100 with a sensor 110.
- the sensor 110 can have an organic material that can interact with electromagnetic radiation.
- a sensor device 100 may include one or more sensors 110 .
- one or more sensors 110 can be arranged on a measuring strip.
- the multiple sensors 110 may include a first sensor 110 and a second sensor 110 .
- the first sensor 110 and the second sensor 110 may include the same organic material.
- the first sensor 110 and the second sensor can be suitable for the same radiation ranges.
- the first and the second sensor can have the same detection spectrum.
- the first sensor can be a measuring sensor and the second sensor can be a reference sensor for the measuring sensor.
- the first sensor 110 and the second sensor 110 may have a different organic material from each other.
- the first sensor and the second sensor can be suitable for different radiation ranges.
- the first and the second sensor can each have a different detection spectrum.
- the sensor 110 can be covered with a reduction unit 120 .
- the sensor 110 can be adapted to a measurement environment by a reduction unit 120 .
- 2A shows a sensor device 100 with a plurality of sensors 110.
- the sensor device 100 can have a reduction unit 120.
- FIG. For example, a sensor 110 can be covered with the reduction unit 120 .
- a covered sensor 110 is represented by a dashed line in the figures.
- the reduction unit 120 can be set up to completely shield and/or reduce the intensity of the radiation with one or more specific wavelengths of the electromagnetic radiation incident on the sensor 110 .
- the reduction unit 120 can be set up to filter the incident electromagnetic radiation.
- the reduction unit 120 can be set up to reduce the intensity of the incident electromagnetic radiation.
- the reduction unit 120 can protect the sensor 110 from background radiation.
- the reduction unit 120 can protect the sensor 110 from an intensity of the incident radiation.
- the reduction unit 120 may protect the sensor 110 from an intensity of the incident radiation (e.g., an intensity that may exceed the characteristic dose limit 172).
- the reduction unit 120 can provide a predetermined wavelength spectrum for the sensor 110 .
- the reduction unit 120 can be set up, for example, to reduce the intensity of radiation incident on a sensor 110.
- FIG. the reduction unit 120 can reduce the intensity of the incident radiation by more than 10% (e.g. by more than 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, or by more than 99%).
- the reduction unit 120 can reduce the incident intensity by 100%.
- the reduction unit 120 can be used to use the sensor 110 covered by it as a reference sensor.
- FIG. 2C shows a sensor device 100 with a reduction unit 120.
- the reduction unit 120 can be set up to reduce the intensity of incident radiation depending on the wavelength.
- Such a reduction unit 120 can be referred to as a wavelength filter.
- an incident radiation can have at least a first partial radiation with a first wavelength and a second partial radiation with a second wavelength, the second wavelength being unequal to the first wavelength.
- the reduction unit 120 can be set up to reduce the first partial radiation with the first wavelength (e.g. by more than 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, or by more than 99% or by 100%).
- the sensor 110 can thus be at least partially or completely shielded from the first partial radiation by the reduction unit 120 .
- the reduction unit 120 can also be set up not to reduce the second partial radiation with the second wavelength or to reduce it by a different factor than the first partial radiation.
- a wavelength sensitivity of the organic material are compensated.
- the sensor 110 can thus also be protected from disruptive influences, such as ambient radiation, scattered radiation, during the measurement or during storage.
- the first wavelength or the second wavelength can be a plurality of first or a plurality of second wavelengths.
- the plurality of first and/or plurality of second wavelengths can be a selection of wavelengths.
- several sensors 110 of a sensor device 100 can be covered with a reduction unit 120 .
- a first sensor 110 can be covered with a first reduction unit 120 and a second sensor 110 with a second reduction unit 120 .
- the first reducing unit 120 and the second reducing unit 120 may differ from each other.
- the first and second reduction units 120 may be the same.
- the sensors 110 can be set up to determine a measurement dose, with a threshold value of the dose or a characteristic limit dose 172 being above the radiation dose to be expected.
- the sensors 110 may include a phosphorescent organic material. Since the measured dose is below the characteristic limit dose 172, phosphorescence cannot yet be activated in the organic material.
- the measuring strip can be described as pre-activated due to the incident radiation.
- the sensors 110 can be set up to accumulate a dose that is below the characteristic limit dose 172 . Determining the accumulated dose, the so-called measuring dose, using a readout device can be referred to as readout.
- the sensors 110 of the sensor device 100 can be irradiated with an additional dose until the characteristic limit dose 172 is reached. This additional dose is referred to below as the additional dose.
- the measurement dose can be determined from the additional dose and the characteristic limit dose 172 .
- FIG. 3A shows a readout device for a sensor device 100 with a sensor 110, the readout device having an additional radiation source 210.
- the additional radiation source 210 can be set up to irradiate the sensor device 100 with radiation 220 .
- the additional radiation source 210 can be set up to irradiate the sensor 110 with radiation 220 .
- the radiation 220 emitted by the additional radiation source 210 can have a known or predetermined wavelength spectrum.
- the additional radiation source 210 can be, for example, a light-emitting diode (LED, eg a UV-LED), a laser or a gas discharge lamp (eg a mercury vapor lamp).
- the readout device can be set up so that the sensor 110 is irradiated by the additional radiation source 210 until a total dose (ie the dose accumulated on the sensor consisting of the measurement dose and the additional dose) reaches a characteristic limit dose 172, and the organic material of the sensor 110 dies characteristic light emission generated.
- the light emission of the organic material can be detected by means of a detector 310, for example.
- the additional dose can be output by the readout device.
- the measurement dose can be calculated, for example, as a difference between the characteristic limit dose 172 and the additional dose.
- the difference can be corrected with a correction factor or correction term.
- the correction factor or correction term can depend on a wavelength spectrum of the measurement environment and/or the additional radiation source.
- the wavelength-dependent sensitivity of the sensor 110 can be offset against the wavelength spectrum of the measurement environment and/or the additional radiation source and included in the calculation of the correction factor.
- the correction factor or correction term may depend on an age of the sensor 110 and/or a number of measurements in which the sensor has already been used.
- the correction factor or correction term can depend on a reduction unit 120 used.
- the correction term can correct a reduction in incident intensity by the reduction unit 120 .
- the readout device can be set up so that the characteristic limit dose 172 can be entered and read.
- the readout device can have a memory. Limit doses, for example, can be and/or are stored in the memory.
- the read-out device can be set up to load a characteristic limit dose 172 from the memory.
- the characteristic limit dose 172 can be automatically selected and loaded using an identification device of a sensor 110 .
- the characteristic limit dose 172 can be manually selected and loaded by a user.
- the characteristic limit dose 172 can be determined by determining the additional dose of a sensor 110 that is not pre-activated.
- the readout device can be set up to determine the measurement dose automatically.
- the measurement dose can be determined based on an entered or loaded characteristic limit dose 172 and the additional dose.
- the readout device can output the additional dose and/or the measured dose. It is understood that output means both visible output (e.g. on a display) and storage on a storage medium.
- the readout device can be set up to carry out a serial readout of a plurality of sensor devices 100 and/or a plurality of sensors 110 one after the other.
- a respective characteristic limit dose 172 can be loaded or entered for each sensor device 100 and/or each sensor 110 .
- a respective measurement dose can be determined and output for each sensor device 100 and/or each sensor 110 .
- the readout device can be configured to read out multiple sensor devices 100 .
- a readout device can be set up to read out a sensor device 100 that has a plurality of sensors 110 .
- the multiple sensors 110 of one sensor device 100 can be read out simultaneously.
- the multiple sensors 110 of the one sensor device 100 can be used to carry out reference measurements. It goes without saying that, of course, different sensors
- FIGS. 4A and 4B each show a step of a reference measurement.
- a sensor device 100 with a first sensor 110 and a second sensor can be used for the reference measurement
- the first sensor 110 and second sensor 111 can be used.
- the first sensor 110 and second sensor 111 can be applied to the same measuring strip. This means that the sensors can be in a similar condition (e.g. age, degradation, number of measurements, same storage or measurement environment, etc.).
- the first sensor 110 and the second sensor 111 can have the same organic material.
- a first characteristic limit dose 172 of the first sensor 110 and a second characteristic limit dose 172 of the second sensor 111 can be the same.
- the sensor device 100 can have a reduction unit 120 .
- the second sensor 111 can be covered by the reduction unit 120 during the measurement of a radiation dose to be determined, i.e. the measurement dose. As a result, the intensity of the radiation incident on the second sensor 111 can be reduced.
- a second measurement dose of the second sensor 111 can therefore be lower than a first measurement dose of the first sensor 110.
- the reduction unit 120 can reduce the intensity of the radiation to be detected for the sensor 111 by a reduction factor.
- the reduction factor can be between 0 and 1 or 0% and 100%.
- the reduction unit 120 can reduce the intensity of the radiation to be detected to zero, i.e. the reduction factor is 1 or 100%.
- the first measurement dose and the second measurement dose can differ from one another by the reduction factor.
- FIG. 4A shows a first point in time at which the first measurement dose and a first additional dose together reach the characteristic limit dose 172 of the first sensor 110 and the organic material of the first sensor 110 can generate a first characteristic light emission.
- the first additional dose can be dispensed.
- a radiation 130 emitted by the first sensor can be detected by a detector 310 .
- the output of the first additional dose can be triggered by the detection of the first characteristic light emission.
- FIG. 4B shows a second point in time at which the second measurement dose and a second additional dose together reach the characteristic limit dose 172 of the second sensor 111 and the organic material of the second sensor 111 can generate a second characteristic light emission.
- the second supplemental dose can be dispensed.
- An emitted radiation 130 of the second sensor can be detected by the detector 310 .
- the output of the second additional dose can be triggered by the detection of the second characteristic light emission.
- the first measurement dose can thus be determined from the second additional dose, the first additional dose and the reduction factor.
- the differential dose y' can correspond to the first measured dose.
- the method described above can be used to determine a reduction factor n of a reduction unit, e.g. when the first measurement dose is known.
- a wavelength-specific or wavelength-dependent reduction factor n can also be determined by irradiation with one or more predetermined wavelengths.
- a sensor device 100 can be set up to be processed.
- a sensor 110 may be configured to be conditioned. Conditioning can be understood as resetting the total dose accumulated on the sensor 110 . Processing can be understood to mean setting the total accumulated dose to zero or to a predetermined known value.
- a sensor 110 that has been used once can be used again by processing.
- a conditioned sensor 110 may have a different known characteristic threshold dose 172 than a non-conditioned sensor.
- the characteristic limit dose 172 can be related to a number of treatments performed.
- the sensor device 110 may include an identification device.
- the identification device can be an optical tag, eg a bar code, and/or a QR code, and/or a combination of characters, and/or a color combination, etc.
- the identification device can be an electronic tag stored on a storage medium, eg a RFID code, and/or a digital signature, and/or an NFC identifier, and/or any other electronic identification.
- the identification device can, for example, have a storage medium, for example a printing surface for an optical marking and/or an electronically readable storage medium.
- the identification device of a sensor device 100 can be the identification device and/or uniquely identify the sensor 110.
- the identification device can represent the characteristic limit dose 172 of the sensor 110 .
- the characteristic limit dose 172 may be stored on the storage medium (eg, printed or stored electronically).
- the number of measurements and/or the date of manufacture of the sensor 110 can be stored on the storage medium.
- information about the number of times the sensor device 100 and/or the sensor 110 has been conditioned can be stored on the storage medium.
- the readout device can be set up to recognize the identification device.
- the readout device can be set up to load and/or process the information that is stored in the identification device.
- a respective measured value can be stored (e.g. electronically or printed) on a memory of the identification device.
- a sensor can have a sensor surface.
- a surface in which the sensor has the organic material can be referred to as a sensor surface.
- a large-area sensor can be a sensor with a sensor area of more than 1 cm 2 (eg more than 2 cm 2 , 5 cm 2 , 10 cm 2 or more than 15 cm 2 ).
- the readout device can be set up to read out one or more sensors 110 (for example one or more large-area sensors 110) in a spatially resolved manner.
- a sensor area can consist of a number of sub-areas (eg 2, 3, 4, 5, 6, 7, 8, 9, 10 or more than 10 sub-areas).
- the read-out device can be set up to read out a first sub-area of the plurality of sub-areas of the sensor area.
- the first partial area is being read out, at least one second partial area of the plurality of partial areas cannot be read out.
- the second partial area can be covered.
- the second partial area can be read out in a subsequent step.
- a readout of a predetermined partial area of the sensor can be referred to as spatially resolved or as spatially resolved readout.
- a photodiode array or a camera can be used as detector 310 for reading.
- a sensor 110 may include a phosphorescent organic material.
- the sensor 110 can be provided.
- the sensor 110 may have a first known accumulated dose, which may hereinafter be referred to as zero dose Do.
- the zero dose Do can be determined, for example, by a further sensor 110 which is not irradiated but was handled (stored, etc.) in a similar way to the sensor.
- the zero dose Do can be deducted later.
- the zero dose Do can be accumulated on the sensor 110 for example due to storage, environmental influences, a treatment process and/or other reasons. In the following, the zero dose Do is considered equal to zero for the sake of comprehensibility.
- the zero dose would have to be taken into account in each step, for example as a second known measurement dose.
- the measured dose can be determined from the limit dose reduced by the additional dose and the zero dose Do.
- the limit dose can be normalized to the zero dose Do.
- the limit dose normalized to the zero dose Do can be determined by reading out an unirradiated sensor 110 .
- the sensor 110 can be irradiated by a radiation source 400 .
- the radiation source 400 can be a lamp.
- the irradiation by the radiation source 400 can take place on an assembly line.
- the radiation source 400 can be used for drying or curing paints, plastics, resins, ceramics or other materials.
- the radiation source can also be used to disinfect surfaces, liquids, packaging or other objects.
- the radiation source can also be used in medical and/or cosmetic applications.
- natural radiation sources such as the sun can also be used.
- a radiation dose, a so-called measurement dose DM can be accumulated on the sensor by the radiation source 400 .
- the measuring strip can be selected in such a way that a threshold value for triggering a characteristic light emission, i.e. a characteristic limit dose 172 of the organic material, is above the radiation dose DM to be expected.
- a threshold value for triggering a characteristic light emission i.e. a characteristic limit dose 172 of the organic material
- the measuring strip can be described as pre-activated.
- the sensor device 100 can be introduced together with the sensor 110 into a readout device (also referred to as a readout device).
- the readout device can be set up to illuminate the sensor until the characteristic limit dose 172 is reached.
- the readout device can illuminate the sensor device and/or the sensor 110 with a known irradiance (eg in mW/cm 2 ) until phosphorescence appears.
- the appearance of the phosphorescence can be determined, for example, by detecting a characteristic light emission.
- an additional dose AD eg in mJ/cm 2
- the additional dose AD can be a dose necessary to activate phosphorescence.
- FIG. 6 shows an exemplary light emission characteristic of the sensor 110 of FIG.
- An exposure dose (eg in mJ/cm 2 ), ie a dose accumulated by the sensor 110, is shown on the horizontal axis 142 .
- a phosphorescence is shown on the vertical axis 141, ie an intensity of the emission of the radiation from the organic material of the sensor 110.
- the first step from FIG. 5 can be shown in a measuring dose area 161: the irradiation with the measuring dose DM by the radiation source 400.
- the irradiation with the additional dose AD be represented by the readout device.
- the dose accumulated on the sensor can reach a lower limit dose 171 .
- the light emission intensity 131 may increase. If the accumulated dose is further increased, a characteristic light emission at the characteristic limit dose 172 can be observed.
- the organic material of the sensor 110 may begin to phosphorescent when it has accumulated a dose equal to the characteristic threshold dose 172 .
- the intensity of the light emission can be substantially maximum.
- the dose DM irradiated in the first measurement step can be calculated via the known dose limit value 172 (also referred to as the irradiation threshold value), which is necessary to activate the phosphorescence of an unused sensor.
- the upper limit of the possible measuring range can be set by the irradiation threshold value of the sensor.
- further parameters can be calculated, such as a radiation intensity, an irradiance, a specific emission and/or a radiation energy.
- a sensor can be pre-activated (S110) with a radiation to be examined (e.g. to be measured).
- a dose to be determined can be applied to a sensor.
- the phosphorescence of an organic material of a sensor can be pre-activated.
- the sensor can be irradiated with a known irradiance until a characteristic limit dose is reached and/or the sensor is fully activated (S120).
- the sensor can be irradiated until the phosphorescence of the sensor's organic material is fully activated.
- the sensor can be irradiated in a readout device.
- the measured value of the radiation to be examined can be calculated (S130).
- the measured value can be calculated using a difference.
- the difference between the dose used in the second step and the characteristic limit dose can be calculated.
- the characteristic limit dose can be a dose necessary to activate a phosphorescence in a fresh measuring strip.
- Example 1 is a sensor for determining a radiation dose
- the sensor may comprise: an organic material, wherein the organic material may have a radiation dose-dependent light emission characteristic, such that a characteristic light emission from the organic material can be generated once the organic material has accumulated a radiation dose , Which is greater than a characteristic limit radiation dose, wherein the sensor can also be set up such that a difference between the characteristic limit radiation dose and a radiation dose accumulated in the material can represent a radiation dose to be determined.
- the radiation dose accumulated in the material can be a measurement dose or a dose to be determined.
- the dose accumulated in the material can also be referred to as the dose stored by the sensor.
- the sensor can be arranged on a measuring strip.
- Example 2 is a sensor according to Example 1, wherein the organic material can be configured such that the organic material can emit radiation in an intensity range lower than a first intensity when the organic material has accumulated a radiation dose that is lower than the characteristic limit radiation dose , and that the organic material is capable of emitting radiation in an intensity range greater than a second intensity when the organic material has accumulated a radiation dose greater than the characteristic radiation dose limit.
- the second intensity can be greater than the first intensity.
- the intensity of the emitted radiation can refer to an intensity of radiation of one or more wavelengths.
- the intensity of the radiation can be a sum or an average value of the intensities of one or more selected radiation components each having a selected wavelength or a selected wavelength range.
- the intensity can be related to all radiation components.
- Example 3 is a sensor according to example 2, wherein the characteristic limit radiation dose can be within a limit dose range, wherein the limit dose range can have a lower limit dose and an upper limit dose, and wherein the intensity of the radiation emitted by the organic material is of a first intensity a lower limit dose to a second intensity at an upper limit dose.
- the upper limit dose can be greater than the lower limit dose.
- the increase in intensity may be dependent on the total radiation dose accumulated in the organic material of the sensor.
- Example 4 is a sensor according to one of Examples 1 to 3, wherein the characteristic light emission can be a multiplication of the emission, for example the intensity of the emitted radiation.
- the emission may increase by more than a factor of 1.2 (e.g. by more than a factor of 2, 3, 4, 5, 6, 7, 8, 9, 10, 15 or by more than a factor of 15).
- the characteristic light emission can be an increase (e.g. as a step increase) in a light emission characteristic of the organic material.
- Example 5 is a sensor according to any one of Examples 1 to 4, wherein the accumulated radiation dose can be accumulated from one of the following ranges: UV radiation range, and/or visible light range, and/or IR radiation range.
- the accumulated radiation dose can be accumulated from one or more partial areas of the areas mentioned.
- the accumulated radiation dose can be accumulated by one or more wavelengths from the mentioned ranges.
- Example 6 is a sensor device including a first sensor according to any one of Examples 1 to 5.
- the sensor device can include a second sensor according to any one of Examples 1 to 5.
- the first and second sensors may be configured according to a different example from each other.
- the first and second sensors can be designed according to the same example.
- the first sensor can have a first characteristic limit dose and the second sensor can have a second characteristic limit dose.
- the first characteristic limit dose may differ from the second characteristic limit dose by more than 10%, e.g., by more than 20%, 50%, 100%, or by more than 200%).
- the first characteristic limit dose may not differ from the second characteristic limit dose, i.e.
- the first sensor can be arranged in a first measurement region and the second sensor can be arranged in a second measurement region.
- the first sensor can be independent of the second sensor.
- the first sensor can be functionally coupled to the second sensor, e.g. they can then only be irradiated simultaneously for redundant measurement or for carrying out a differential measurement.
- the sensor device can have more than the two sensors.
- the sensor device may have 3, 4, 5, 6, 7, 8, 9, 10, 15, 25, 100 or more than 100 sensors, each of the sensors according to one of Examples 1 to 5 (e.g. independently of the other sensors ) can be designed.
- multiple sensors of the same construction can be integrated in the sensor device (illustratively on a measuring strip). These can then have the same irradiation behavior (or measurement behavior) and emission behavior (or readout behavior), etc.
- Example 7 is a sensor device comprising according to example 6, wherein the sensor device can optionally further comprise a reduction unit.
- the reduction unit can be set up to reduce an intensity of the radiation incident on the organic material.
- the reduction unit may reduce the incident intensity by more than 10% (e.g., by more than 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, or by more than 99%).
- the reduction unit can reduce the incident intensity by 100%.
- the reduction unit can reduce the intensity of a first predetermined selection of one or more wavelengths more than the intensity of a second selection of one or more wavelengths.
- the second sensor can be covered by the reduction unit.
- the second sensor can thereby accumulate a reduced radiation dose.
- Example 8 is a sensor device according to example 6 or 7, wherein the sensor device can optionally further comprise an identification device.
- the Identification device have an identifier in the form of an RFID code, NFC code, bar code, a printed character string, a color code or the like.
- Example 9 is a sensor device according to any one of Examples 6 to 8, wherein the sensor device may have a memory.
- an identifier of the sensor device, the first sensor and/or the second sensor can be stored in the memory.
- a characteristic limit dose can be stored in the memory.
- an age of the sensor device and/or the first sensor and/or the second sensor can be stored in the memory.
- the identification device can have the memory or an additional memory.
- Example 10 is a readout device for reading out a sensor device according to one of Examples 6 to 9, wherein the organic material of a first sensor of the sensor device can have an accumulated dose, a so-called measuring dose.
- the readout device can have: an additional radiation source for irradiating the sensor with an additional dose, wherein the additional dose can represent the measurement dose introduced into the organic material, and an output device for outputting the additional dose.
- Example 11 is a readout device according to example 10, it being possible for the characteristic light emission of the organic material of the first and/or the second sensor to be triggered by the additional dose.
- the characteristic light emission of the organic material of the first and/or the second sensor can be triggered when a total dose from the measuring dose and the additional dose reaches the characteristic limit dose.
- Example 12 is a readout device according to example 10 or 11, wherein the additional radiation source can emit radiation with a predetermined wavelength spectrum and/or with a predetermined intensity.
- Example 13 is a readout device according to any of Examples 10 to 12, optionally further comprising a radiation detector for detecting light emissions from the first and/or the second sensor.
- the radiation detector can be set up to detect the characteristic light emission.
- the readout device can be set up to end the readout of the sensor device as soon as the radiation detector detects the characteristic light emission.
- Example 14 is a readout device according to one of Examples 10 to 13, optionally also set up to determine the measurement dose of the first and/or the second sensor or the dose accumulated on the first and/or the second sensor.
- the readout device can optionally also have an input unit for entering a theoretical and/or measured characteristic limit radiation dose.
- the input device may be a manual input device such as a keyboard, a touch-sensitive display, a scroll wheel, or anything similar suitable for entering a value.
- the input unit can be an automated input unit that can automatically recognize and input the theoretical and/or the measured characteristic limit radiation dose using the sensor device and/or the first sensor and/or the second sensor.
- the theoretical and/or measured characteristic limit radiation dose can be recognized and/or entered and/or loaded using an identification device of the sensor device.
- Example 15 is a readout device according to any one of Examples 10 to 14, wherein the readout device may further include a data management unit.
- the data management unit can be set up to store data and to load data.
- the data can include or be one or more of the following data: one or more theoretical and/or measured characteristic limit radiation doses, and/or one or more identifiers of the sensor, and/or one or more correction variables (predetermined spectra, reduction factors, etc.) , and/or one or more predetermined additional doses.
- a specific additional dose can be assigned to a specific measurement method (e.g. a quality check).
- a correction variable can be a variable for correcting a wavelength dependency of the sensitivity of the first and/or second sensor.
- a correction variable can be a variable for correcting an intensity of the additional radiation source.
- an intensity of the additional radiation source can increase or decrease over time.
- a correction variable can be a variable for correcting an age of the sensor device and/or the first sensor and/or the second sensor.
- the sensitivity of the first and/or the second sensor can decrease or increase over time.
- the theoretical and/or measured characteristic limit radiation dose for a sensor can decrease and/or increase over time.
- Example 16 is a readout device according to any one of Examples 10 to 15, wherein the
- Readout device can optionally also be set up to determine the radiation dose accumulated on the first and/or the second sensor or the measured dose from the additional dose and the theoretical and/or measured characteristic limit radiation dose.
- Example 17 is a readout device according to any one of Examples 10 to 15, wherein the
- Readout device can optionally also be set up, the measurement dose of the first and / or the second To determine sensor from the additional dose, the theoretical and / or measured characteristic limit radiation dose and one or more correction variables.
- Example 18 is a readout device according to any one of Examples 10 to 17, wherein the
- Readout device can be set up: to read a first measurement dose of the first sensor and a second measurement dose of the second sensor.
- the readout device can also be set up to output a first additional dose, which is assigned to the first measuring dose, and a second additional dose, which is assigned to the second measuring dose.
- the first or the second additional dose can represent the respective accumulated radiation dose.
- the first and second sensors can be read in parallel or at least partially in parallel (e.g. in different chambers).
- the first and second sensors can be read serially (i.e. one after the other) (e.g. by covering all sensors except for one sensor to be read).
- Example 19 is a readout device according to any one of Examples 14 to 17, wherein the
- Readout device can optionally also be set up to determine the first measurement dose of the first sensor from the first additional dose of the first sensor and the second additional dose of the second sensor.
- Example 20 is a readout device according to example 19, wherein the readout device can optionally also be set up to determine the first measurement dose from the first additional dose, the second additional dose and one or more correction variables.
- Example 21 is a readout device according to one of Examples 14 to 19, which optionally also has a determination unit that can be set up to carry out the respective determination and/or calculations.
- the determination unit can have a processor.
- the determination unit can be an electronic computing device.
- Example 22 is a method for determining a radiation dose or measurement dose accumulated in an organic material of a sensor according to any one of Examples 1 to 5. The method may include: applying an additional dose until the organic material of the sensor produces the characteristic light emission, and outputting the additional dose, which may represent the measurement dose of the organic material of the sensor.
- Example 23 is a method according to example 21, optionally further comprising determining the measurement dose of the sensor from a theoretical and/or measured characteristic limit radiation dose and the additional dose.
- Example 24 is a method according to example 22, optionally further comprising determining the measurement dose of the sensor from a theoretical and/or measured characteristic limit radiation dose, the additional dose and one or more correction variables.
- Example 25 is a method for determining a radiation dose using a sensor device according to one of Examples 6 to 9.
- a first measurement dose can be accumulated in the first sensor and a second measurement dose can be accumulated in the second sensor.
- the method may include covering the second sensor during the measurement such that an intensity of radiation incident on the second sensor (i.e. radiation to be measured) is reduced by more than 10%, e.g. by more than 20%, 30%, 40% %, 50%, 60%, 70%, 80%, 90%, 95%, or more than 99%.
- the intensity can be reduced by 100%.
- the second sensor can only accumulate a lower dose than the first sensor during the measurement.
- the method may further include: applying the dose to be determined to the sensor device (i.e.
- the cover of the second sensor can be removed before the second additional dose is applied.
- Example 26 is a method of determining exposure that may employ a phosphorescent sensor on a gage.
- the threshold of the sensor can be above a value of the expected exposure. This can result in no phosphorescence being activated after the actual radiation measurement.
- the measuring strip can be pre-activated by the radiation that hits it.
- the measuring strip can be placed in a reading device that post-illuminates it with a known irradiance (eg in mW/cm 2 ) until phosphorescence appears.
- the irradiation eg a dose in mJ/cm 2
- the irradiation which was still necessary for activation can be calculated via the time required for this.
- the irradiation (eg the dose) applied in the first measuring step can be calculated using the known irradiation threshold value, which is necessary to activate the phosphorescence of a fresh measuring strip.
- the upper limit of the possible measuring range can be the threshold value of the sensor on the measuring strip.
- Based on the radiation, a radiant intensity, an irradiance, a specific radiation and a radiation energy can be calculated using additional, adjustable parameters.
- Example 27 is a method for determining a measurement value of a radiation, the method may include, for example: preactivating a phosphorescence of a sensor on a measuring strip with the radiation to be measured. Full activation of phosphorescence in a readout device with a known irradiance. Calculation of the measured value sought using a difference between the irradiation used in the second step and the irradiation required to activate the phosphorescence in a fresh measuring strip.
- Example 28 is a readout device for reading out a sensor, the sensor comprising: an organic material, the organic material having a radiation dose-dependent light emission characteristic such that a characteristic light emission is generated by the organic material as soon as the organic material has accumulated a total radiation dose, which is greater than a characteristic limit radiation dose, the organic material of the sensor having an accumulated measurement dose, and the sensor being set up in such a way that a difference between the characteristic limit radiation dose and the accumulated measurement dose represents the accumulated measurement dose, the readout device having: an additional radiation source for irradiation of the sensor with an additional dose, the characteristic light emission of the organic material of the sensor being triggered by the additional dose when a total dose from the accumulated measuring dose s and the additional dose reach the characteristic limit radiation dose; and wherein the additional dose represents a dose from the measurement dose accumulated on the sensor until the characteristic limit radiation dose is reached; and an output device for outputting a value representing the additional dose.
- Example 29 is a readout device according to example 28, wherein the additional radiation source emits radiation with a predetermined wavelength spectrum and/or with a predetermined intensity.
- Example 30 is a readout device according to example 28 or 29, optionally further comprising a radiation detector for detecting light emissions from the sensor.
- Example 31 is a readout device according to one of Examples 28 to 30, further optionally comprising a determination device for determining the accumulated measurement dose.
- Example 32 is a method for determining a measurement dose accumulated in an organic material of a sensor, the sensor comprising: an organic material, the organic material having a radiation dose-dependent light emission characteristic such that a characteristic light emission is generated by the organic material , as soon as the organic material has accumulated a total radiation dose that is greater than a characteristic limit radiation dose, wherein the sensor is set up such that a difference in the characteristic Limit radiation dose and the accumulated measurement dose represents the accumulated measurement dose, the method comprising: applying an additional dose until the organic material of the sensor generates the characteristic light emission, and outputting a value representing the additional dose that represents the accumulated measurement dose of the sensor.
- Example 33 is a method according to example 32, further optionally comprising: determining the accumulated measurement dose of the sensor from the characteristic limit radiation dose and the additional dose.
- Example 34 is a method according to example 33, further comprising determining the accumulated measurement dose from a characteristic limit radiation dose, the additional dose and one or more correction variables.
- Example 35 is a method according to any one of Examples 32 to 34, wherein the organic material of the sensor is set up such that the organic material emits radiation with an intensity in an intensity range lower than a first intensity when the organic material has accumulated a radiation dose, that is less than the characteristic radiation dose limit, and that the organic material emits radiation in an intensity range greater than a second intensity when the organic material has accumulated a radiation dose that is greater than the characteristic radiation dose limit, and wherein the first intensity is less than that second intensity.
- Example 36 is a method according to Example 35, wherein the characteristic limit radiation dose is within a limit dose range, wherein the limit dose range has a lower limit dose and an upper limit dose, and wherein an intensity of the radiation emitted by the organic material, from a first intensity at a lower Limit dose increases to a second intensity at an upper limit dose, the upper limit dose being greater than the lower limit dose, and the increase in intensity being dependent on the total accumulated radiation dose of the sensor.
- Example 37 is a method according to any one of Examples 32 to 36, wherein the characteristic light emission is a multiplication of an intensity of the emitted radiation by more than a factor of 1.2.
- Example 38 is a method according to any one of Examples 32 to 37, wherein the accumulated measurement dose can be formed using one of the following radiation: X-ray radiation, and/or gamma radiation, and/or EUV radiation, and/or UV radiation, and/or visible light, and/or IR radiation.
- Example 39 is using a sensor to determine a measurement dose accumulated on the sensor that is less than a characteristic limit radiation dose, the sensor having an organic material, and the organic material having a radiation dose-dependent light emission characteristic such that a characteristic light emission from the organic Material is generated once the organic material has accumulated a total radiation dose greater than the characteristic radiation dose limit.
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Priority Applications (3)
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EP22723351.7A EP4327132A1 (de) | 2021-04-19 | 2022-04-13 | Sensor und sensorvorrichtung zum ermitteln einer strahlungsdosis, auslesevorrichtung zum auslesen eines sensors und ein verfahren zum ermitteln von einer strahlungsdosis |
KR1020237039462A KR20230172555A (ko) | 2021-04-19 | 2022-04-13 | 방사선량을 결정하기 위한 센서 및 센싱 디바이스, 센서를 판독하기 위한 판독 디바이스 및 방사선량을 결정하기 위한 방법 |
US18/264,460 US20240045082A1 (en) | 2021-04-19 | 2022-04-13 | Sensor and sensor device for determining a radiation dose, read-out device for reading out a sensor, and method for determining a radiation dose |
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DE102021109797.5A DE102021109797A1 (de) | 2021-04-19 | 2021-04-19 | Sensor und Sensorvorrichtung zum Ermitteln einer Strahlungsdosis, Auslesevorrichtung zum Auslesen eines Sensors und ein Verfahren zum Ermitteln von einer Strahlungsdosis |
DE102021109797.5 | 2021-04-19 |
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US (1) | US20240045082A1 (de) |
EP (1) | EP4327132A1 (de) |
KR (1) | KR20230172555A (de) |
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WO2020039090A2 (de) * | 2018-08-24 | 2020-02-27 | Technische Universität Dresden | Verfahren zur aktivierung und deaktivierung der phosphoreszenz einer struktur, verfahren zur herstellung einer phosphoreszierenden struktur und phosphoreszierende struktur, etikett mit phosphoreszierender struktur, verfahren zum beschreiben, auslesen und löschen eines etiketts sowie uv-sensor |
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US4507562A (en) | 1980-10-17 | 1985-03-26 | Jean Gasiot | Methods for rapidly stimulating luminescent phosphors and recovering information therefrom |
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2022
- 2022-04-13 KR KR1020237039462A patent/KR20230172555A/ko unknown
- 2022-04-13 EP EP22723351.7A patent/EP4327132A1/de active Pending
- 2022-04-13 WO PCT/EP2022/059880 patent/WO2022223397A1/de active Application Filing
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WO2020039090A2 (de) * | 2018-08-24 | 2020-02-27 | Technische Universität Dresden | Verfahren zur aktivierung und deaktivierung der phosphoreszenz einer struktur, verfahren zur herstellung einer phosphoreszierenden struktur und phosphoreszierende struktur, etikett mit phosphoreszierender struktur, verfahren zum beschreiben, auslesen und löschen eines etiketts sowie uv-sensor |
Non-Patent Citations (2)
Title |
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BOTTER-JENSEN L ET AL: "Review of optically stimulated luminescence (OSL) instrumental developments for retrospective dosimetry", RADIATION MEASUREMENTS, ELSEVIER, AMSTERDAM, NL, vol. 45, no. 3-6, 1 March 2010 (2010-03-01), pages 253 - 257, XP027064345, ISSN: 1350-4487, [retrieved on 20091118], DOI: 10.1016/J.RADMEAS.2009.11.030 * |
SHUZO HIRATA ET AL: "Efficient Persistent Room Temperature Phosphorescence in Organic Amorphous Materials under Ambient Conditions", ADVANCED FUNCTIONAL MATERIALS, WILEY - V C H VERLAG GMBH & CO. KGAA, DE, vol. 23, no. 27, 19 July 2013 (2013-07-19), pages 3386 - 3397, XP001585135, ISSN: 1616-301X, [retrieved on 20130206], DOI: 10.1002/ADFM.201203706 * |
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US20240045082A1 (en) | 2024-02-08 |
KR20230172555A (ko) | 2023-12-22 |
DE102021109797A1 (de) | 2022-10-20 |
EP4327132A1 (de) | 2024-02-28 |
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