WO2024088687A1 - Vorrichtung und verfahren zum messen optischer eigenschaften, insbesondere farbmessgerät - Google Patents
Vorrichtung und verfahren zum messen optischer eigenschaften, insbesondere farbmessgerät Download PDFInfo
- Publication number
- WO2024088687A1 WO2024088687A1 PCT/EP2023/076879 EP2023076879W WO2024088687A1 WO 2024088687 A1 WO2024088687 A1 WO 2024088687A1 EP 2023076879 W EP2023076879 W EP 2023076879W WO 2024088687 A1 WO2024088687 A1 WO 2024088687A1
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- WO
- WIPO (PCT)
- Prior art keywords
- radiation
- calibration
- calibration body
- examined
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4785—Standardising light scatter apparatus; Standards therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/251—Colorimeters; Construction thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N21/474—Details of optical heads therefor, e.g. using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/57—Measuring gloss
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
Definitions
- the present invention relates to a device and a method for measuring optical properties and in particular for determining optical properties of surfaces.
- the device is described in particular with reference to a color measuring device, but it is pointed out that the invention is also suitable for other devices for measuring or determining optical properties (of surfaces) such as gloss or the like.
- Color measuring devices often use a calibration standard, referred to below as a calibration body, in order to be able to detect and intercept and/or correct possible aging, such as a decrease in the intensity of light waves. It is known that this correction is achieved using a calibration factor, which ensures that color measurement values (in the laboratory system, in particular the L value) always remain the same for an identical sample, regardless of the quality of the lighting.
- a dirty or damaged calibration body can simulate an aging of a light source that does not actually exist and in this way impair a measurement such as a color measurement via an incorrectly set calibration factor.
- the present invention is therefore based on the object of achieving a more accurate calibration of such devices and, in particular, of eliminating and/or taking into account various sources of error that could influence the calibration.
- a device according to the invention for examining optical properties of surfaces has a housing and a first radiation device arranged within the housing, which is suitable and intended to emit radiation and in particular light and in particular light in the visible wavelength range, for example light in a wavelength range of 300 nm - 700 nm, onto a surface to be examined.
- the device further comprises a first radiation detector device arranged within the housing, which is suitable and intended to record radiation radiated onto the surface to be examined and reflected and/or scattered by the surface.
- the housing further comprises an opening through which the first radiation device emits radiation onto the surface to be examined.
- the device has a first calibration body, which can be arranged instead of the surface to be examined such that radiation which is emitted by the first radiation device onto the first calibration body and reflected and/or scattered by the first calibration body reaches the first radiation detector device.
- the device has a second calibration body which can be arranged instead of the surface to be examined and instead of the first calibration body in such a way that radiation which was emitted by the first radiation device onto the second calibration body and reflected and/or scattered by the second calibration body reaches the first radiation detector device.
- the first and/or the second calibration body have at the radiation device
- the surface facing the device has a white surface.
- This is particularly preferably a specified white standard which, in addition to the property "white”, preferably also has a gloss level suitable for gloss calibration.
- the surface of the calibration body can be made of ceramic.
- Other materials can also be used which are stable and/or color-stable and preferably also resistant to aging.
- the calibration body is arranged on a holder.
- the first and/or calibration body is always or permanently arranged inside the housing.
- the first and/or second calibration body it would also be conceivable for the first and/or second calibration body to be arranged outside the housing, for example on a (particularly pivotable) support arm.
- the first and/or second calibration body can be moved and in particular pivoted in the beam path between the radiation device and the detector device.
- the calibration body is arranged in a holder.
- this holder is designed to be light-absorbing and/or made of a light-absorbing material.
- the first and/or second calibration body can be arranged such that a surface exposed to the radiation device coincides with the surface to be examined or is parallel to it.
- the first calibration body can be pivoted inside the housing into a position in which its surface is parallel to the surface of a surface used in operation or to be examined.
- the second calibration body can be placed on the opening and thus preferably located at the position where the surface to be examined is located during a measuring operation.
- the device has a closing device and in particular a shutter device, which is suitable and intended to close the device in certain periods of time, in particular in periods in which no measurement takes place, or the device is switched off, the opening must be closed. This prevents dirt from entering the device or the housing when the device is not in use.
- the radiation detector device is suitable and intended to record spatially resolved images of the surface to be examined.
- the radiation detector device is suitable and intended to measure a radiation intensity incident on it.
- the radiation detector device is suitable and intended to carry out a wavelength resolution of the radiation impinging on it.
- the radiation detector device allows an analysis of the radiation impinging on it with regard to its wavelength and/or outputs wavelength-dependent measurement results.
- the radiation detector device allows a wavelength-dependent analysis of the radiation incident on it, in particular in a visible wavelength range.
- the radiation detector device is a spectrometer device.
- the device particularly preferably has a receiving device or a receiving volume for receiving one of the calibration bodies.
- the device particularly preferably has a receiving compartment or a receiving volume for both calibration bodies.
- the two calibration bodies are preferably stored separately from one another.
- the two calibration bodies are stored in different orientations, in particular in different orientations with respect to an orientation of the above-mentioned opening through which the surface to be examined is illuminated during operation.
- the second calibration body can be removed from the receiving volume and, for example, placed on the opening of the device in order to carry out a calibration measurement.
- the housing is light-absorbing on its inner surface, for example black.
- the device has a processor device which determines a measured value and in particular a calibration value from a value output by the radiation detector device.
- the processor device can particularly preferably use a calibration value for this purpose.
- the calibration value is particularly preferably stored or can be stored in a memory device of the device. This calibration value can particularly preferably be changed and in particular changed as a result of a calibration measurement.
- one of the calibration bodies can be arranged inside the housing and preferably can be moved inside the housing in a beam path between the first radiation device and the first radiation detector device.
- this one calibration body can be placed against the opening from the inside.
- the device has a processor device which detects a first value characteristic of a first calibration measurement with the first calibration body and which detects a second value characteristic of a second calibration measurement with the second calibration body and preferably the device has a comparison device which compares the first value and the second value with each other.
- a fault condition of the device and/or the calibration body can be concluded from the comparison between the first value and the second value.
- the first and second values are each comparison values.
- a cause of a fault within the scope of a calibration measurement can be concluded on the basis of this comparison.
- the device has an output and/or display device which is suitable and intended to output at least one signal which is characteristic of a specific error.
- the display can indicate that one of the calibration bodies is dirty or that the calibration body is not positioned correctly.
- the display device is particularly preferably a display, which is particularly preferably integrated into the housing of the device.
- the display is particularly preferably suitable and intended for an alphanumeric output of information.
- two calibration bodies are used. This is preferably an external calibration body that is placed on the measuring opening like a sample to be measured and also preferably an internal calibration body that is integrated into a closure cap that closes the measuring opening preferably by motor when no measurement is being taken.
- At least one calibration body is integrated into a closing device which is intended to close the opening through which the surface to be examined is illuminated during operation.
- the device is selected from a group of devices which includes color measuring devices, gloss measuring devices, orange peel measuring devices and the like. Particularly preferably, the device is a color measuring device.
- the device has a second radiation device arranged within the housing, which is suitable and intended to radiate the material to be examined. corresponding surface to emit radiation and especially light.
- this radiation or the radiation resulting from this radiation and reflected and/or scattered (from the surface to be examined) is also detected by the detector device described above.
- the second radiation device is arranged such that it radiates radiation onto the surface at a different angle than the above-mentioned first radiation device.
- a first radiation device to radiate radiation at an angle of, for example, 60° or 45° relative to the surface and for a second radiation device to radiate radiation at an angle of 20° relative to the surface.
- At least one radiation device radiates radiation onto the surface at an angle to the latter that is between 30° and 60°, preferably between 40° and 50°.
- at least one radiation device radiates radiation onto the surface at an angle to the latter that is between 10° and 30°, preferably between 15° and 25°.
- these radiations can also be radiated onto or directed to the detector device by means of the calibration body.
- the device also has a second detection device or a second radiation detector device which detects the radiation impinging on it.
- This second detector device can in particular be arranged at a different angle to the surface than the first radiation deflection device described above.
- the device has a plurality of radiation devices, each of which is suitable and intended to radiate light onto the surface to be examined.
- This can be, for example, a plurality of light sources, which particularly preferably partially emit white light and particularly preferably at least partially emit light of different colors and/or wavelengths.
- the radiation devices can have a variety of radiation characteristics such as directional illumination, illumination within a given angular acceptance or diffuse illumination.
- this plurality of radiation devices is arranged along a circular line.
- this circular line runs parallel to the surface to be examined.
- the radiation detector device is arranged such that it is substantially perpendicular to the surface to be examined, and in particular a direction from which it receives radiation from the surface is substantially perpendicular to the surface.
- the device further comprises a gloss measuring device (and/or reflection measuring device).
- This gloss measuring device and in particular a radiation device of this gloss measuring device preferably emits light onto the surface at a predetermined angle and a detector device detects light from the corresponding reflection angle.
- This gloss measuring device can also be used to evaluate the calibration. If the device is operated in the orientation with a measuring opening facing upwards, the optics can become dirty in a very dusty environment despite the measuring opening being closed, for example by a shutter. However, small gloss angles compared to the normal, for example 20°, are much more affected by this than large angles such as 60°.
- the gloss value of the first calibration object can be related to the gloss value of the second calibration object in terms of the calibration factors. As will be shown in more detail below, different conclusions can be drawn from an appropriate combination of observations.
- the device has a gloss measuring device, wherein this gloss measuring device has a further radiation device which radiates radiation onto the surface at a predetermined angle of incidence, and the gloss measuring device further has a further radiation detector device which detects radiation radiated onto the surface by the further radiation device at a predetermined angle and reflected from the surface, wherein the angle of incidence and the further angle are preferably opposite each other.
- the present invention is further directed to a method for examining optical properties and in particular color properties of surfaces, wherein a radiation device arranged within a housing emits radiation and in particular light onto a surface to be examined and a first radiation detector device arranged within the housing receives the radiation radiated onto the surface to be examined and reflected and/or scattered by the surface (and/or this radiation strikes the radiation detector device), wherein the housing has an opening through which the first radiation device emits radiation onto the surface and wherein the device has a first calibration body which, in a calibration operation, is arranged instead of the surface to be examined in such a way that radiation which was emitted by the first radiation device onto the first calibration body and reflected and/or scattered by the first calibration body reaches the first radiation detector device.
- a second calibration body is arranged such that radiation which was emitted by the first radiation device onto the second calibration body and reflected and/or scattered by the second calibration body reaches the first radiation detector device.
- a calibration factor is changed on the basis of at least one calibration measurement carried out.
- this calibration factor is changed if the calibration measurements show that deviations in the measurements are based on a change in the optical properties of the radiation device.
- the calibration factor is changed in order to take into account and/or compensate for an aging state of at least one radiation device.
- a first value characteristic of a first calibration measurement with the first calibration body is recorded, as well as a second value characteristic of a second calibration measurement with the second calibration body.
- the first value and the second value are compared with each other and particularly preferably, taking this comparison into account, an instruction or information about an error is issued to a user.
- the first and second values are placed in a mathematical relationship to one another. This makes it possible to form a difference between the first value and the second value. However, it would also be possible to form a quotient between the first and second values. Particularly preferably, both a difference between the first and second values and a quotient between the first and second values are formed. This can, for example, determine which of the two values is larger. This can provide information about possible error states in the device and/or the calibration bodies. Furthermore, the relationship can be used to determine whether the two values are approximately the same or differ significantly from one another.
- a further measured value in particular a gloss measurement value (in particular under a predetermined angle of incidence) is also determined.
- the gloss measurement is preferably carried out in so-called gloss units as described in detail in the common standards (for example ISO 2813 or ASTM D 253).
- This measured gloss value is preferably compared with a predetermined value, for example an initial value.
- This gloss value measurement can be used for both the first calibration body and the second calibration body. It is particularly preferred to take several of the values or evaluations determined above into account in order to conclude that there is a fault in the device or the calibration bodies or the optical devices.
- the following table shows a corresponding list of different sources of error. It is particularly preferred to make a case distinction according to different sources of error depending on the comparison mentioned above.
- a calibration value is changed taking into account at least one of the measured values. This can be seen in particular from the table above.
- the table above shows four cases of errors or conditions.
- the second line shows possible measurement results for the calibration factor caj for the first calibration body (in particular the calibration body arranged inside the housing during the calibration measurement). This can either be greater than 1 (which indicates an error state) or approximately equal to 1 (which indicates a target state).
- the third line shows possible measurement results for the calibration factor ca_a for the second calibration body (in particular the calibration body arranged outside the housing during the calibration measurement). This can either be greater than 1 (which indicates an error state) or approximately equal to 1 (which indicates a target state).
- the fourth line shows a ratio between the measured calibration factors caj and ca_a. If this ratio is approximately 1, i.e. the two calibration factors are approximately the same, this indicates a target state with regard to possible contamination of the two calibration bodies and in particular the second calibration body. If this ratio caj/ ca_a is less than 1, this indicates contamination of the outer calibration body (see third column and penultimate line of the table).
- gloss measurements gi are determined at an angle of incidence of 20° and with the first calibration body.
- gloss measurements ga are determined at an angle of incidence of 20° and with the second calibration body.
- gloss measurements are preferably compared with the respective initial measurement values glossJO and gloss_e0. If both values differ (second column), this is an indication of dirty optics. If only the value for the second calibration body differs, this is an indication that it is either dirty or not correctly positioned on the opening.
- gloss measurements can also be performed at a second angle, such as 60'.
- the surface to be examined is exposed to several radiation devices during operation.
- the surface to be examined is exposed to at least two radiation devices.
- these two radiation devices radiate radiation at at least two different angles.
- the irradiation with the first radiation device is offset in time from the irradiation with the second radiation device.
- the radiation detector device detects the radiation incident on it depending on the wavelength.
- the radiation detector device is particularly preferably a spectrometer.
- the radiation detector device particularly preferably outputs a value characteristic of a specific wavelength. This value is particularly preferably output both during the measurement with a surface to be examined and during the calibration.
- At least one calibration is used to determine and take into account an age-related condition of at least one radiation device.
- the surface to be examined is illuminated with light of different wavelengths and/or with white light.
- the surface to be examined is irradiated from at least two different angles of incidence.
- At least one color measurement value for an identical sample is always substantially constant regardless of the quality of the illumination.
- Fig. 1 is a representation of a device according to the invention.
- Fig. 2 is a view into the interior of the device through the measuring openings
- Fig. 3 is an internal view of a device according to the invention.
- Fig. 4 shows a further internal view of a device according to the invention
- Fig. 5 shows a further internal view of a device according to the invention.
- Fig. 6 shows a further internal view of a device according to the invention.
- Fig. 1 shows an external view of a device 1 according to the invention for examining optical properties of surfaces.
- This device 1 has a housing 10.
- the housing also has a receiving opening 38 or a receiving volume for receiving a second calibration body 16 (external calibration body), which serves in particular for its storage.
- This external calibration body 16 is arranged here on a pivoting flap 36.
- the reference number 30 designates a display device with which, for example, measured values or error states can be displayed.
- the reference number 22 designates an opening through which a surface to be examined (not shown) can be examined with regard to its color and/or other optical properties such as a gloss value. Preferably, light can only reach the interior of the housing 30 through this opening 22.
- the device has a pressure device 35, which here has a pivotable arm 32 on which a pressure element 34 is arranged for pressing a sample against the opening 22.
- This pressure device 35 can be retracted or sunk into a recess 36 of the housing.
- the second calibration body is arranged inside the housing 10.
- Fig. 2 shows a view of the interior of the housing through the opening 22.
- this is a vertical view through the measuring opening 22, for example from above.
- a plurality, more precisely ten first radiation devices or light sources 2a, 2b, 2c are provided here. These are white light LEDs which serve as illumination for the color measurement. Particularly preferably, these light sources 2a, 2b, 2c are arranged in such a way that they enable illumination of the surface, i.e. the surface to be examined, at 45°.
- the reference symbols 2d, 2e, 2f refer to a large number of other light sources, which in particular apply colored light to the surface. This can be achieved by using colored light LEDs. However, it would also be possible and preferred to provide white light LEDs here, but with narrow-band filters. Another possible lighting option is monochrome LEDs, which are additionally provided with narrow-band filters whose bandwidth is narrower than the natural bandwidth of the monochrome LEDs.
- these light sources 2d, 2e, 2f emit light in different wavelengths, in particular in a wavelength range of 300 - 660 nm.
- the reference number 4 designates a radiation detector device and in particular a spectrometer. This is suitable and intended to receive light from irradiation devices 2a - 2f or the light reflected from the surface (not shown).
- the reference number 12 designates a preferably present second radiation device, which also serves to direct light onto the surface to be examined (not shown). This light is reflected by the surface and can thus reach the second radiation detector device 13.
- the second radiation device and the second radiation detector device 13 form a gloss measuring device.
- Fig. 3 shows a view of the device described here from the inside.
- the first internal calibration body 6 is shown, which is arranged on a holder 62 and can be pivoted with respect to a pivot axis S on the one hand into a position in which it is not in the beam path (shown in Fig. 3) and on the other hand into a position in which it is placed against the opening 22 from the inside (Fig. 4).
- the reference numeral 41 designates a tubular body through which radiation can be directed onto the radiation detector device (not shown).
- the reference numeral 45 designates an optical means such as a lens which serves to focus the radiation impinging on the radiation detector device.
- the reference number 52 designates a housing part which adjoins the opening 22.
- This housing part is in particular radiation-absorbing and in particular is kept in black.
- the reference number 32 schematically designates a processor device which serves, among other things, to control the device 1 and also to determine or change calibration factors.
- the reference number 34 designates a memory device which serves in particular to store calibration factors.
- Fig. 4 shows a representation of the device according to the invention, wherein the first calibration body 6, i.e. the inner standard, is pivoted into a position in which a calibration can be carried out.
- the reference numeral 27 designates an optical block in which the individual radiation devices 2a - 2c and also 2d - 2f are arranged.
- Fig. 5 shows a further illustration of the device according to the invention.
- the radiation detector device 4 is shown, as well as the channel 41 through which radiation is guided to the radiation detector device 4.
- the opening 22 is again shown, which is closed here and wherein the first calibration body 6 points downwards, ie in the direction of the radiation detector device 4.
- Fig. 6 shows the device shown in Fig. 5 in a view from below.
- a further radiation detector device 13 is shown, which is used in particular for measuring or carrying out gloss measurements.
- the first radiation detector device 4 is also shown again.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2025523576A JP2025536396A (ja) | 2022-10-24 | 2023-09-28 | 光学特性を測定するための装置および方法、特に色測定装置 |
| CN202380073534.4A CN120092173A (zh) | 2022-10-24 | 2023-09-28 | 用于测量光学特性的设备和方法,特别是颜色测量装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022128033.0A DE102022128033A1 (de) | 2022-10-24 | 2022-10-24 | Vorrichtung und Verfahren zum Messen optischer Eigenschaften, insbesondere Farbmessgerät |
| DE102022128033.0 | 2022-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024088687A1 true WO2024088687A1 (de) | 2024-05-02 |
Family
ID=88237535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/076879 Ceased WO2024088687A1 (de) | 2022-10-24 | 2023-09-28 | Vorrichtung und verfahren zum messen optischer eigenschaften, insbesondere farbmessgerät |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2025536396A (de) |
| CN (1) | CN120092173A (de) |
| DE (1) | DE102022128033A1 (de) |
| WO (1) | WO2024088687A1 (de) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165642A (en) * | 1984-08-14 | 1986-04-16 | Unvala Ltd | Colour measuring apparatus |
| US20120099873A1 (en) * | 2010-10-22 | 2012-04-26 | Fuji Xerox Co., Ltd. | Sensing device, image forming device |
| US20140192358A1 (en) * | 2011-08-31 | 2014-07-10 | Markus Barbieri | Color measurement apparatus |
| DE102017211067A1 (de) * | 2017-06-29 | 2019-01-03 | Byk-Gardner Gmbh | Aufnahmevorrichtung für ein Oberflächenmessgerät |
| KR20220001548U (ko) * | 2020-12-23 | 2022-06-30 | 주식회사 엘켐스 | 색 측정 장치 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010032600A1 (de) | 2010-07-28 | 2012-02-02 | Byk-Gardner Gmbh | Vorrichtung und Verfahren zur Bestimmung von Oberflächeneigenschaften mit Mehrfachmessung |
| DE102019101088A1 (de) | 2019-01-16 | 2020-07-16 | Endress+Hauser Conducta Inc. | Kalibriereinheit für optischen Detektor |
-
2022
- 2022-10-24 DE DE102022128033.0A patent/DE102022128033A1/de active Pending
-
2023
- 2023-09-28 WO PCT/EP2023/076879 patent/WO2024088687A1/de not_active Ceased
- 2023-09-28 JP JP2025523576A patent/JP2025536396A/ja active Pending
- 2023-09-28 CN CN202380073534.4A patent/CN120092173A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165642A (en) * | 1984-08-14 | 1986-04-16 | Unvala Ltd | Colour measuring apparatus |
| US20120099873A1 (en) * | 2010-10-22 | 2012-04-26 | Fuji Xerox Co., Ltd. | Sensing device, image forming device |
| US20140192358A1 (en) * | 2011-08-31 | 2014-07-10 | Markus Barbieri | Color measurement apparatus |
| DE102017211067A1 (de) * | 2017-06-29 | 2019-01-03 | Byk-Gardner Gmbh | Aufnahmevorrichtung für ein Oberflächenmessgerät |
| KR20220001548U (ko) * | 2020-12-23 | 2022-06-30 | 주식회사 엘켐스 | 색 측정 장치 |
Also Published As
| Publication number | Publication date |
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| CN120092173A (zh) | 2025-06-03 |
| DE102022128033A1 (de) | 2024-04-25 |
| JP2025536396A (ja) | 2025-11-05 |
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