WO2018131442A1 - Dispositif et procédé de mesure de couleur - Google Patents

Dispositif et procédé de mesure de couleur Download PDF

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Publication number
WO2018131442A1
WO2018131442A1 PCT/JP2017/046294 JP2017046294W WO2018131442A1 WO 2018131442 A1 WO2018131442 A1 WO 2018131442A1 JP 2017046294 W JP2017046294 W JP 2017046294W WO 2018131442 A1 WO2018131442 A1 WO 2018131442A1
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Prior art keywords
unit
color
colorimetric
outputs
output
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PCT/JP2017/046294
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English (en)
Japanese (ja)
Inventor
石田　耕一
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コニカミノルタ株式会社
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Priority to JP2018561908A priority Critical patent/JP6825631B2/ja
Publication of WO2018131442A1 publication Critical patent/WO2018131442A1/fr

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    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors

Definitions

  • the present invention relates to a color measuring device and a color measuring method for measuring the color of an object to be measured.
  • a color device is used.
  • This color measuring device includes a spectroscopic type spectrocolorimeter, a tristimulus value type color difference meter (color reader), and the like.
  • a colorimetric device disclosed in Patent Document 1.
  • the colorimetric device disclosed in Patent Document 1 includes a light source and a light receiving unit attached in a state of being directed to the opening at a predetermined angle in a main body having a measurement opening. Light received from the light source and reflected from the surface of the object to be measured located at the opening is received, and information on the color of the object to be measured is obtained from the received light signal.
  • the measurement area of the object to be measured which is measured by the color measuring device is getting smaller year by year. For this reason, since the in-plane distribution of the measurement region greatly affects the measurement result, it is necessary to fix the color measurement device to the measurement region of the object to be measured during measurement. Since the colorimetric device disclosed in Patent Document 1 uses a xenon lamp as a light source and emits flashing light at the time of measurement, it takes a charging time to charge the capacitor of the flashing light emitting circuit. It takes about 2 to 3 seconds for each measurement.
  • the colorimetry device when measuring the same measurement sample a plurality of times continuously, the colorimetry device is measured for about 2 to 3 seconds ⁇ number of measurements, particularly for a small measurement region. , It was necessary to fix securely.
  • the present invention has been made in view of the above-described circumstances, and the object thereof can be applied to a measurement area having a relatively small area, and a measurement result having higher reproducibility can be obtained in a shorter time.
  • a color measuring device and a color measuring method are provided.
  • a colorimetric apparatus and a colorimetric method reflecting one aspect of the present invention irradiate a measurement aperture with illumination light at a constant light intensity for a predetermined time, The reflected light of the illumination light from the object to be measured facing the measurement aperture is received, the correctness of the color measurement is determined based on a plurality of temporally continuous outputs at the received light, and the determination result is output.
  • the color measurement device and the color measurement method according to the present invention can be applied to a measurement area having a relatively small area, and a measurement result having higher reproducibility can be obtained in a shorter time.
  • the color measurement device in the embodiment is a device that obtains the color of an object to be measured, and is a device that can obtain the result of color measurement and output the result.
  • a color measurement device may be, for example, a spectral type spectrocolorimeter, a tristimulus type color difference meter (color reader), or the like.
  • a spectral type spectrocolorimeter is typically described, but a tristimulus value type color difference meter (color reader) and the like can be similarly described.
  • FIG. 1 is a diagram illustrating a configuration of a color measurement device according to the first embodiment. More specifically, the color measurement device Da according to the first embodiment includes, for example, a light source unit 1, an integrating sphere 2, a light receiving unit 3, a control processing unit 4a, and an input unit 5 as shown in FIG. And an output unit 6, an interface unit (IF unit) 7, a storage unit 8, and a housing HS.
  • the integrating sphere 2 is a member having a diffuse reflection surface that diffusely reflects, and more specifically, is a hollow sphere whose inner surface is covered with a material having a high diffuse reflectance.
  • the material having a high diffuse reflectance include magnesium oxide, aluminum oxide, barium sulfate, magnesium sulfate, and zinc oxide.
  • a coating agent containing a material having a high diffuse reflectance is applied to the inner surface of the sphere to form a diffuse reflection surface.
  • the colorimetric device Da measures a spectral reflectance with diffuse illumination / 8 ° light receiving geometry, and the integrating sphere 2 is formed with, for example, a circular measurement opening, and the opening in the measurement opening.
  • a circular light receiving opening is formed at a position 8 ° from the normal direction of the surface.
  • the measurement object SP is applied to the measurement opening, and the measurement object SP faces the measurement opening.
  • the geometry of diffuse illumination / 8 ° light reception is used, but other geometries such as 45 ° illumination / 0 ° light reception and 45 ° illumination / multi-angle light reception prescribed by the colorimetric standards and the like are used. It may be.
  • the light source unit 1 is an apparatus that is connected to the control processing unit 4a and irradiates the measurement aperture of the integrating sphere 2 with illumination light at a constant light intensity for a predetermined time according to the control of the control processing unit 4a.
  • the predetermined time is an appropriate time required to obtain a plurality of outputs under substantially the same diffuse illumination conditions in order to determine whether colorimetry is correct or not as will be described later. Such a predetermined time is preferably as short as possible so that it can be applied to a measurement area having a relatively small area, for example, a few seconds such as 1 or 2 seconds.
  • the constant light intensity is an appropriate intensity suitable for colorimetry.
  • the light source unit 1 is connected to, for example, the light source 1-1 that emits the illumination light at a constant light intensity for the predetermined time and the control processing unit 4a.
  • the light source unit 1 is controlled by the control processing unit 4a.
  • the light source 1-1 includes, for example, a white light emitting diode (white LED) that emits white light suitable for light emission with a constant light intensity for a predetermined time, and a drive circuit.
  • 1-2 includes a circuit for driving the white LED 1-1 with a constant current.
  • the white LED 1-1 is disposed on the integrating sphere 2 so that the light emitting surface faces the inner surface of the integrating sphere 2.
  • the light receiving unit 3 is connected to the control processing unit 4a, is a device that receives the reflected light of the illumination light from the object SP facing the measurement opening in a measurable manner, and outputs the received light intensity to the control processing unit 4a. .
  • the reflected light of the illumination light is dispersed at a predetermined wavelength interval, and the received light intensity for each wavelength is output to the control processing unit 4a.
  • the predetermined wavelength interval is appropriately set according to the specification of the color measuring device Da, and is, for example, 5 nm, 10 nm, 15 nm, or the like.
  • the light receiving unit 3 includes, for example, a spectroscopic unit 3-1, and a light receiving optical system 3-2.
  • the light receiving optical system 3-2 is an optical system that receives the reflected light of the illumination light through the light receiving opening of the integrating sphere 2 and guides the reflected light to the spectroscopic unit 3-1.
  • an optical element such as a lens is provided.
  • the light receiving optical system 3-2 includes a variable focal length lens and a switching mechanism for mechanically switching the beam diameter in the optical path in order to adjust the beam diameter of the reflected light guided to the spectroscopic unit 3-1. Further, it may be provided.
  • the light receiving optical system 3-2 may include an optical fiber in order to improve the degree of freedom of the arrangement position of the spectroscopic unit 3-1, and to realize the miniaturization of the color measuring device D.
  • the light splitting unit 3-1 is a device that splits the reflected light incident via the light receiving optical system 3-2 at a predetermined wavelength interval and outputs the received light intensity for each wavelength to the control processing unit 4a.
  • the spectroscopic unit 3-1 includes a concave diffraction grating, a linear sensor including a plurality of silicon photodiodes (SPDs) juxtaposed in one direction, and a control circuit that controls the linear sensor.
  • the reflected light is incident on the concave diffraction grating in a slit shape, and is diffracted and reflected by the concave diffraction grating.
  • the reflected light diffracted and reflected by the concave diffraction grating is received by each SPD of the linear sensor, and the linear sensor outputs the received light intensity for each wavelength received by each SPD according to the control of the control circuit.
  • a device that outputs XYZ tristimulus values instead of the spectroscopic unit 3-1, for example, a device that outputs XYZ tristimulus values is used.
  • Such an apparatus includes, for example, three photodiodes (PD) for the X filter, the Y filter, and the Z filter that receive the reflected light through the X filter, the Y filter, and the Z filter, respectively. To XYZ tristimulus values are output.
  • PD photodiodes
  • the input unit 5 is connected to the control processing unit 4a and, for example, various commands such as a command for instructing measurement of the device under test SP, and various necessary for measuring an input of an identifier in the device under test SP, for example.
  • a device for inputting data to the colorimetric device Da for example, a plurality of input switches to which a predetermined function is assigned.
  • the output unit 6 is connected to the control processing unit 4a.
  • the command and data input from the input unit 5 and the color of the object measured by the colorimetric measuring device Da is a device that outputs (spectral reflectance) and the like, for example, a display device such as a CRT display, an LCD (liquid crystal display device) and an organic EL display, and a printing device such as a printer.
  • the output unit 6 further outputs a determination result of a colorimetric correctness determination unit 43 described later. More specifically, when the colorimetric correctness determination unit 43 determines that the colorimetry is not correct, the output unit 6 outputs at least a warning (warning) that the colorimetry is not correct.
  • the output unit 6 may output at least that the colorimetry is correct when the colorimetry correctness determination unit 43 determines that the colorimetry is correct.
  • a touch panel may be configured from the input unit 5 and the output unit 6.
  • the input unit 5 is a position input device that detects and inputs an operation position such as a resistive film method or a capacitance method
  • the output unit 6 is a display device.
  • a position input device is provided on the display surface of the display device, one or more input content candidates that can be input to the display device are displayed, and the user touches the display position where the input content to be input is displayed.
  • the position is detected by the position input device, and the display content displayed at the detected position is input to the color measurement device D as the operation input content of the user.
  • the IF unit 7 is a circuit that is connected to the control processing unit 4a and inputs / outputs data to / from an external device according to the control of the control processing unit 4a.
  • an interface circuit of an RS-232C that is a serial communication system
  • the storage unit 8 is a circuit that is connected to the control processing unit 4a and stores various predetermined programs and various predetermined data under the control of the control processing unit 4a.
  • the various predetermined programs include a control program for controlling each unit of the color measurement device Da, a color processing program for obtaining the color of the object SP based on the output of the light receiving unit 3, and a time in the light receiving unit 3.
  • a control processing program such as a colorimetric correctness determination program for determining the correctness of colorimetry based on a plurality of continuous outputs is included.
  • the various kinds of predetermined data include data necessary for executing these programs, such as the identifier of the object SP to be measured, the output of the light receiving unit 3, and a predetermined range used in the colorimetric correctness determination described later. included.
  • the storage unit 8 includes, for example, a ROM (Read Only Memory) that is a nonvolatile storage element, an EEPROM (Electrically Erasable Programmable Read Only Memory) that is a rewritable nonvolatile storage element, and the like.
  • the storage unit 8 includes a RAM (Random Access Memory) that serves as a working memory of the so-called control processing unit 4a that stores data generated during execution of the predetermined program.
  • the control processing unit 4a is a circuit for controlling each unit 1, 3, 5 to 8 of the color measurement device Da according to the function of each unit and obtaining the color of the object SP.
  • the control processing unit 4a includes, for example, a CPU (Central Processing Unit) and its peripheral circuits.
  • the control processing unit 4a functionally includes a control unit 41a, a color processing unit 42, and a colorimetric correctness determination unit 43 by executing a control processing program.
  • the control unit 41a controls the respective units 1, 3, 5 to 8 of the color measuring device Da according to the functions of the respective units, and governs overall control of the color measuring device Da.
  • the control unit 41a when the colorimetric correctness determination unit 43 determines that the colorimetry is not correct, the control unit 41a outputs at least the output unit 6 that the colorimetry is not correct (warning). Note that the control unit 41a may output at least the output unit 6 that the color measurement is correct when the color measurement correctness determination unit 43 determines that the color measurement is correct.
  • the color processing unit 42 obtains the color of the measurement object SP based on the output of the light receiving unit 3. More specifically, in this embodiment, the color processing unit 42 obtains the spectral reflectance by a known calculation method from each received light intensity (count value) for each wavelength output from the light receiving unit 3, and obtains this. From the spectral reflectance, the color value is obtained by a known calculation method.
  • the colorimetric correctness determination unit 43 determines whether the colorimetry is correct (whether the colorimetry is correct) based on a plurality of temporally continuous outputs from the light receiving unit 3.
  • the colorimetric correctness determination unit 43 is configured to output the plurality of outputs, the plurality of colors in the measurement object SP obtained based on the plurality of outputs, and the plurality of outputs. Whether the colorimetry is correct or not is determined by determining whether any of the plurality of data generated up to the determination of the plurality of colors in the measurement object SP is within a predetermined range.
  • the colorimetric correctness determination unit 43 samples a plurality of light reception intensities (count values) for each wavelength output from the light receiving unit 3 by the control unit 41a at a predetermined sampling interval. That is, when each light reception intensity (count value) for each wavelength output from the light receiving unit 3 is set (set), the control unit 41a samples a plurality of sets. Then, the colorimetric correctness determination unit 43 determines whether or not the plurality of sets are within a predetermined first range set in advance. The first range is set to an appropriate value in advance by measuring a plurality of samples and stored in the storage unit 8.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is correct, while the plurality of sets are in the first range. If it is not within the range, the colorimetric correctness determination unit 43 determines that the colorimetry is not correct. This determination may be performed for each wavelength, and may be representatively performed for one or a plurality (for example, 3, 5, 10, 20, etc.) of each wavelength.
  • the colorimetric correctness determination unit 43 samples a plurality of received light intensity for each wavelength output from the light receiving unit 3 at a predetermined sampling interval by the control unit 41a. Next, the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets by a known calculation method. Then, the colorimetric correctness determination unit 43 determines whether the plurality of spectral reflectances are within a predetermined second range set in advance. The second range is set to an appropriate value in advance by measuring a plurality of samples and stored in the storage unit 8.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is correct, while the plurality of spectral reflectances. Is not within the second range, the colorimetric correctness determination unit 43 determines that the colorimetry is not correct. This determination may be performed for each wavelength, and may be representatively performed for one or a plurality (for example, 3, 5, 10, 20, etc.) of each wavelength.
  • the colorimetric correctness determination unit 43 samples a plurality of received light intensity for each wavelength output from the light receiving unit 3 at a predetermined sampling interval by the control unit 41a. Next, the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets by a known calculation method. Next, the colorimetric correctness determination unit 43 obtains a plurality of color values from each of the plurality of spectral reflectances by a known calculation method. Then, the colorimetric correctness determination unit 43 determines whether or not the plurality of color values are within a predetermined third range set in advance. The third range is set in advance to an appropriate value by measuring a plurality of samples, and stored in the storage unit 8.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is correct, while the plurality of color values are If it is not within the third range, the colorimetric correctness determination unit 43 determines that the colorimetry is not correct.
  • the colorimetric correctness determination unit 43 may cause the color processing unit 42 to obtain the spectral reflectance and the color value.
  • the housing HS is, for example, a box-shaped member that houses the light source unit 1, integrating sphere 2, light receiving unit 3, control processing unit 4 a, input unit 5, output unit 6, ID unit 7, and storage unit 8. An opening is formed through the housing HS at a position corresponding to the measurement opening of the integrating sphere 2.
  • FIG. 2 is a flowchart showing the operation of the color measurement device shown in FIG.
  • control processing unit 4a When a power switch (not shown) is turned on, the color measurement device Da is activated, and necessary parts are initialized by the control processing unit 4a, and a control processing program is executed in the control processing unit 4a.
  • the control unit 41a, the color processing unit 42, and the colorimetric correctness determination unit 43 are configured.
  • the processing unit 4a causes the light source unit 1 to emit white light having a constant light intensity (S1), and the light receiving unit 3 measures the reflected light of the illumination light a plurality of times (S2).
  • the control processing unit 4a controls the drive circuit 1-2 by the control unit 41a, and the drive circuit 1-2 drives the white LED 1-1 with a constant current.
  • the white LED 1-1 is driven with a constant current by the drive circuit 1-2 according to the control of the control unit 41a, the white LED 1-1 emits white light with a constant light intensity according to the current value of the drive current.
  • the white light emitted from the white LED 1-1 enters the integrating sphere 2, is diffusely reflected by the inner surface of the integrating sphere 2, and becomes diffused illumination light.
  • the object SP to be measured facing the measurement aperture is illuminated by the diffused illumination light.
  • the illumination light is reflected by the surface of the object SP to be measured, and the reflected light of the illumination light enters the light receiving optical system 3-2 through the light receiving opening.
  • the reflected light incident on the light receiving optical system 3-2 is guided by the light receiving optical system 3-2 and is incident on the spectroscopic unit 3-1.
  • the reflected light incident on the spectroscopic unit 3-1 is split and received by the spectroscopic unit 3-1, and outputs each output to the control processing unit 4a for each wavelength.
  • the control unit 41a samples a plurality of received light intensities (count values) for each wavelength output from the light receiving unit 3 as a set at a predetermined sampling interval. In one example, the control unit 41a samples each received light intensity for each wavelength output from the light receiving unit 3 as a set at five intervals of 0.2 seconds.
  • control processing unit 4a obtains the color of the object SP to be measured based on the output of the light receiving unit 3 by the color processing unit 42 (S3). More specifically, the color processing unit 42 uses a known calculation method from any of the plurality of sets, for example, from the first sampled set, or from, for example, the temporally sampled set. A spectral reflectance is obtained, and a color value is obtained from the obtained spectral reflectance by a known calculation method.
  • control processing unit 4a determines whether the colorimetry is correct or not (whether the colorimetry is correct) based on a plurality of temporally continuous outputs from the light receiving unit 3 by the colorimetric correctness determination unit 43 ( S4). As a result of this determination, if it is determined that the colorimetry is correct (positive, Yes), the control processing unit 4a next executes step S5. On the other hand, if it is determined as a result of the determination that the colorimetry is not correct (No, No), the control processing unit 4a next executes a process S6.
  • the colorimetric correctness determination unit 43 determines whether or not the plurality of sets measured in the process S2 are within the first range. The colorimetric correctness determination unit 43 determines that the colorimetry is correct when the plurality of sets are within the first range as a result of the determination, while the plurality of sets is determined as a result of the determination. Is not within the first range, it is determined that the color measurement is not correct. Alternatively, for example, the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets measured in the process S2, and determines whether the plurality of spectral reflectances are within the second range. Determine whether or not.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is correct when the plurality of spectral reflectances are within the second range, and on the other hand, as a result of the determination, If the spectral reflectance is not within the second range, it is determined that the colorimetry is not correct.
  • the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets measured in the process S2, and obtains a plurality of color values from the plurality of spectral reflectances. It is determined whether or not the plurality of color values are within the third range.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is correct when the plurality of color values are within the third range, and on the other hand, as a result of the determination, If the color value is not within the third range, it is determined that the color measurement is not correct.
  • control processing unit 4a causes the control unit 41a to output the color (color value in the present embodiment) of the object SP to be measured obtained in process S3 to the output unit 6, and ends this process.
  • the control unit 41a may output a message indicating that the color measurement is correct to the output unit 6.
  • the control processing unit 4a may output the color of the object SP to be measured (color value in the present embodiment) obtained in step S3 to the IF unit 7 by the control unit 41a.
  • control processing unit 4a causes the control unit 41a to output a message (warning) indicating that the color measurement is not correct to the output unit 6, and ends the present process.
  • control unit 41a may reset the measured object SP to the colorimetric device Da and further output a message prompting the remeasurement to the output unit 6.
  • control unit 41a may also output to the output unit 6 the maximum value, minimum value, standard deviation, etc. of the numerical values used in the colorimetric determination in the processing S4.
  • the color measurement device Da according to the first embodiment and the color measurement method mounted thereon irradiate the measurement aperture with illumination light at a constant light intensity for a predetermined time, so that charging time is required.
  • a plurality of outputs can be successively obtained one after another from the light receiving unit 3 in a shorter time.
  • the light intensity changes to a sharp mountain shape with time, and it is difficult to measure a plurality of times under substantially the same conditions.
  • the color measurement device Da and the color measurement method can be applied to a measurement area having a relatively small area. Since the colorimetric device Da and the colorimetric method determine whether the colorimetry is correct based on the plurality of outputs, a sensor for detecting the posture is not necessary and the determination result is output. Therefore, the measurement when the colorimetry is correct can be used, and the measurement result with higher reproducibility can be obtained by using the measurement when the colorimetry is correct from the determination result. Therefore, the colorimetric device Da and the colorimetric method can be applied to a measurement area having a relatively small area, and a measurement result having higher reproducibility can be obtained in a shorter time.
  • the white LED 1-1 Since the colorimetric device Da and the colorimetric method use the white LED 1-1, the white LED 1-1 is driven with a constant current to irradiate the measurement aperture with illumination light at a constant light intensity for a predetermined time.
  • the light source unit 1 can be easily realized.
  • the plurality of outputs fall within a certain range, while when the colorimetry is not correctly performed, the plurality of outputs vary.
  • the plurality of colors in the measured object SP obtained based on the plurality of outputs are similarly within a certain range when the color measurement is correctly performed, while the color measurement is performed. If not implemented correctly, it will vary.
  • the plurality of data generated from the plurality of outputs to the determination of the plurality of colors in the object SP to be measured fall within a certain range when the color measurement is correctly performed. If colorimetry is not performed correctly, it will vary.
  • the colorimetric device Da and the colorimetric method include the plurality of outputs, the plurality of colors in the measurement object SP obtained based on the plurality of outputs, and the measurement object SP from the plurality of outputs. Whether the colorimetry is correct or not is determined by determining whether any of a plurality of pieces of data (spectral reflectance in the above example) generated until a plurality of colors are obtained in a predetermined range is determined. Therefore, whether the colorimetry is correct or not can be determined appropriately.
  • the color measurement device Da in the first embodiment is a device that outputs a message (warning) that the color measurement is not correct to the output unit 6, but the color measurement device Db in the second embodiment determines whether the color measurement is correct or not.
  • FIG. 3 is a diagram illustrating the configuration of the color measurement device according to the second embodiment. More specifically, the color measurement device Db in the second embodiment includes, for example, as shown in FIG. 3, a light source unit 1, an integrating sphere 2, a light receiving unit 3, a control processing unit 4b, and an input unit 5. And an output unit 6, an IF unit 7, a storage unit 8, and a housing HS.
  • the light source unit 1, the integrating sphere 2, the light receiving unit 3, the input unit 5, the output unit 6, the IF unit 7, the storage unit 8, and the housing HS in the colorimetric device Db of the second embodiment are respectively the first embodiment. Since this is the same as the light source unit 1, integrating sphere 2, light receiving unit 3, input unit 5, output unit 6, IF unit 7, storage unit 8 and housing HS in the colorimetric device Da, description thereof is omitted.
  • control processing unit 4b is connected to the light source unit 1, the light receiving unit 3, the input unit 5, the output unit 6, the IF unit 7, and the storage unit 8, and each unit 1 of the color measurement device Db, 3 is a circuit for controlling the colors 3, 5 to 8 according to the functions of the respective parts to determine the color of the object SP.
  • the control processing unit 4b includes, for example, a CPU and its peripheral circuits.
  • the control processing unit 4b functionally includes a control unit 41b, a color processing unit 42, and a colorimetric correctness determination unit 43 by executing a control processing program.
  • the color processing unit 42 and the colorimetric correctness determination unit 43 in the control processing unit 4b of the second embodiment are the same as the color processing unit 42 and the colorimetric correctness determination unit 43 in the control processing unit 4a of the first embodiment, respectively. Since there is, explanation is omitted.
  • the control unit 41b controls each unit 1, 3, 5 to 8 of the color measurement device Db according to the function of each unit, and controls the entire color measurement device Db.
  • the control unit 41 b changes the output method of the determination result output from the output unit 6 based on the determination result of the colorimetric correctness determination unit 43.
  • the control unit 41b obtains the number of sets (the number of sets) within the first range by the colorimetric correctness determination unit 43, and compares the obtained number of sets with a predetermined first threshold value set in advance. As a result of this comparison, when the determined number of sets is equal to or greater than the first threshold, the color (color value in the present embodiment) determined from the set within the first range is output from the output unit 6, If the determined number of sets is less than the first threshold, a message (warning) that the colorimetry is not correct is output from the output unit 6.
  • the first threshold value is appropriately set according to the specification of the color measuring device Db.
  • the control is performed when it is determined that the colorimetry is not correct.
  • the unit 41b calculates the set number of spectral reflectances within the second range by the colorimetric correctness determination unit 43, and compares the determined set number of spectral reflectances with a predetermined second threshold value set in advance. As a result of this comparison, when the set number of spectral reflectances obtained is equal to or greater than the second threshold value, the color obtained from the spectral reflectance set within the second range (color value in this embodiment).
  • the second threshold value is appropriately set according to the specifications of the color measuring device Db.
  • the control unit 41b obtains the number of color values within the third range by the colorimetric correctness determination unit 43, compares the obtained number of color values with a predetermined third threshold value, As a result, if the number of the obtained color values is equal to or greater than the third threshold value, the output unit 6 outputs the color values within the third range, while the calculated number of color values is the second threshold value. If it is less than the value, a message (warning) that the colorimetry is not correct is output from the output unit 6.
  • the third threshold value is appropriately set according to the specifications of the color measuring device Db.
  • the first to third threshold values are set in advance by, for example, displaying a setting screen or the like on the output unit 6, inputting from the input unit 5 using the setting screen, and storing the setting screen in the storage unit 8. Also good.
  • FIG. 4 is a flowchart showing the operation of the color measurement device shown in FIG.
  • the control processing unit 4b initializes each necessary part, and the control processing unit 4b By executing the control processing program, the control unit 41b, the color processing unit 42, and the colorimetric correctness determination unit 43 are functionally configured.
  • each of the processing S1, processing S2, processing S3 and processing S4 is executed in order by the control processing section 4b (S1 to S4).
  • control processing unit 4b If it is determined that the color measurement is correct (Yes, Yes) as a result of the determination in the process S4, the control processing unit 4b then executes the process S5 in the same manner as the color measurement device Da. On the other hand, if it is determined as a result of the determination that the colorimetry is not correct (No, No), the control processing unit 4b next executes a process S11.
  • control processing unit 4b determines the output method of the determination result output from the output unit 6 based on the determination result of the colorimetric correctness determination unit 43 by the control unit 41b.
  • the control unit 41b uses the colorimetric correctness determination unit 43 to determine whether or not the plurality of sets are within the first range.
  • the number of sets within the first range is obtained, and the output method of the judgment result is judged by comparing the obtained number of sets with the first threshold value.
  • the output unit 6 outputs a color (color value in the present embodiment) determined from the set within the first range from the output unit 6. It is determined that there is a part (partial output), and the control unit 41b next executes the process S12.
  • the control unit 41b executes a process S6.
  • the control unit 41b causes the colorimetric correctness determination unit 43 to The number of sets of spectral reflectances within two ranges is obtained, and the output method of the determination result is judged by comparing the obtained number of sets of spectral reflectances with the second threshold value. As a result of this comparison, when the set number of spectral reflectances obtained is equal to or greater than the second threshold, a color (color value in this embodiment) obtained from the spectral reflectance set within the second range is output. It is determined that the output method is the output method from the unit 6 (partial output), and the control unit 41b next executes the process S12.
  • the output method outputs a message (warning) that the colorimetry is not correct from the output unit 6. If it is determined (warning), the control unit 41b next executes the process S6.
  • the control unit 41b uses the colorimetric correctness determination unit 43 to determine the third color value.
  • the number of color values within the range is obtained, and the output method of the judgment result is judged by comparing the obtained number of color values with the third threshold value. As a result of this comparison, when the number of the obtained color values is equal to or greater than the third threshold value, it is determined that the output method outputs the color values within the third range from the output unit 6 (partial output).
  • the control unit 41b executes a process S12.
  • the control unit 41b next executes the process S6.
  • control processing unit 4b causes the control unit 41b to output the color obtained from a part of the plurality of sets from the output unit 6, and ends the present process.
  • the control unit 41b A color (color value in this embodiment) obtained from a set within one range is output from the output unit 6.
  • colors obtained from the set within the first range may be output from the output unit 6 as a list, or representative values of colors obtained from the set within the first range may be output. 6 may be output.
  • the representative value is, for example, an average value or a median value.
  • the control unit 41b has a spectral reflection within the second range.
  • a color (color value in this embodiment) obtained from the set of rates is output from the output unit 6.
  • the colors obtained from the set within the first range may be output from the output unit 6 in a list or as a representative value thereof.
  • the control unit 41b determines the color values that are within the third range. Output from the output unit 6.
  • the color values within the third range may be output from the output unit 6 as a list or as a representative value thereof.
  • control processing unit 4b In processing S6, the control processing unit 4b outputs a message (warning) indicating that the color measurement is not correct to the output unit 6 by the control unit 41b, similarly to the color measurement device Da, and ends this processing. In this case, the control unit 41b may reset the measured object SP to the colorimetric device Db and further output a message prompting the remeasurement to the output unit 6.
  • the color measurement device Db in the second embodiment and the color measurement method mounted thereon have the same functions and effects as the color measurement device Da in the first embodiment and the color measurement method mounted thereon. Play.
  • the determination result is output more appropriately. Can be output from. Based on the above, it is possible to provide the color measurement device Db that outputs a warning that the color measurement is not correct to the output unit 6. Further, according to the above, it is possible to provide the color measuring device Da that outputs the color obtained from a part of the plurality of sets to the output unit 6.
  • the output method is changed in the threshold determination using the first to third thresholds.
  • the user is inquired whether or not to execute the process S11 every measurement.
  • the color measuring device Db may be configured. In this case, when the non-execution of the process S11 is selected, only the process S6 is executed.
  • partial output is performed in step S12.
  • the output indicating that there is a variation in measurement may be output from the output unit 6 as a message indicating that there is a variation in measurement, or another example of the output unit 6 is a lamp indicating that there is a variation in measurement.
  • the colorimetric device Db is further provided, and the lamp may be turned on or blinked to indicate that there is variation in measurement.
  • the colorimetric correctness determination unit 43 includes the plurality of outputs, the plurality of colors in the measurement object SP obtained based on the plurality of outputs, and The colorimetry is performed by determining whether any of a plurality of data generated from the plurality of outputs until a plurality of colors in the object to be measured SP are obtained is within a predetermined range.
  • the present invention is not limited to this, and the correctness of the colorimetry may be determined by another method.
  • the colorimetric correctness determination unit 43 includes the plurality of outputs, the plurality of colors in the measurement object SP obtained based on the plurality of outputs, and the plurality of outputs. By determining whether the standard deviation or variance in any of a plurality of data generated from the determination of a plurality of colors in the object SP to be measured is within a predetermined range. Whether or not is correct is determined. This also makes it possible to appropriately determine whether the colorimetry is correct.
  • the colorimetric correctness determination unit 43 sets the received light intensity (count value) for each wavelength output from the light receiving unit 3 as a set by the control unit 41 (41a, 41b). Multiple samples are taken at the sampling interval. Then, the colorimetric correctness determination unit 43 determines whether the standard deviation or variance in the plurality of sets is within a predetermined fourth range set in advance. The fourth range is set in advance to an appropriate value by measuring a plurality of samples, and stored in the storage unit 8. As a result of this determination, if the standard deviation or variance in the plurality of sets is within the fourth range, the colorimetric correctness determination unit 43 determines that the colorimetry is correct, while the plurality of sets.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is not correct. This determination may be performed for each wavelength, and may be representatively performed for one or a plurality (for example, 3, 5, 10, 20, etc.) of each wavelength.
  • the colorimetric correctness determination unit 43 samples a plurality of received light intensities for each wavelength output from the light receiving unit 3 at a predetermined sampling interval by the control unit 41 (41a, 41b). . Next, the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets by a known calculation method. Then, the colorimetric correctness determination unit 43 determines whether the standard deviation or variance of the plurality of spectral reflectances is within a predetermined fifth range. The fifth range is set to an appropriate value in advance by measuring a plurality of samples and stored in the storage unit 8.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is correct, If the spectral reflectances are not within the fifth range, the colorimetric correctness determination unit 43 determines that the colorimetry is not correct. This determination may be performed for each wavelength, and may be representatively performed for one or a plurality (for example, 3, 5, 10, 20, etc.) of each wavelength.
  • the colorimetric correctness determination unit 43 samples a plurality of received light intensities for each wavelength output from the light receiving unit 3 at a predetermined sampling interval by the control unit 41 (41a, 41b). . Next, the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets by a known calculation method. Next, the colorimetric correctness determination unit 43 obtains a plurality of color values from each of the plurality of spectral reflectances by a known calculation method. Then, the colorimetric correctness determination unit 43 determines whether the standard deviation or variance of the plurality of color values is within a predetermined sixth range.
  • the sixth range is set to an appropriate value in advance by measuring a plurality of samples and stored in the storage unit 8. As a result of the determination, if the standard deviation or variance in the plurality of color values is within the sixth range, the colorimetric correctness determination unit 43 determines that the colorimetry is correct, while the plurality of color values are determined. If the standard deviation or variance in the color values is not within the sixth range, the colorimetric correctness determination unit 43 determines that the colorimetry is not correct.
  • the colorimetric correctness determination unit 43 may cause the color processing unit 42 to obtain the spectral reflectance and the color value.
  • step S11 the control unit 41b causes the colorimetric correctness determination unit 43 to select any one of the fourth to sixth ranges.
  • the number of sets of standard deviation or variance within the range is obtained, and the output method of the judgment result is judged by comparing the obtained number of sets with a predetermined threshold value set in advance. As a result of the comparison, when the obtained number of sets is equal to or greater than the threshold value, the output method outputs the color obtained from the set within any of the fourth to sixth ranges from the output unit 6.
  • the control unit 41b After being determined (partial output), the control unit 41b next executes the process S12.
  • control part 41b performs process S6.
  • the control unit 41b outputs from the output unit 6 the color obtained from the set that is in any one of the fourth to sixth ranges.
  • the colorimetric correctness determination unit 43 includes the plurality of outputs, the plurality of colors in the object SP to be measured obtained based on the plurality of outputs, and the plurality of the plurality of outputs. By determining whether or not the same value is included in any of a plurality of pieces of data generated until a plurality of colors in the object to be measured SP are obtained from a plurality of outputs, the measurement is performed. Judge whether the color is right or wrong. This also makes it possible to appropriately determine whether the colorimetry is correct.
  • the colorimetric correctness determination unit 43 sets the received light intensity (count value) for each wavelength output from the light receiving unit 3 as a set by the control unit 41 (41a, 41b). Multiple samples are taken at the sampling interval. Then, the colorimetric correctness determination unit 43 compares each of the plurality of sets and determines whether or not the same value is included therein. As a result of the determination, if the same value is included, the colorimetric correctness determination unit 43 determines that the colorimetry is correct. On the other hand, if the same value is not included, the colorimetric correctness determination unit 43 Judge that the colorimetry is not correct. This comparison and determination may be performed for each wavelength, and may be representatively performed for one or a plurality (for example, three, five, ten, twenty, etc.) of each wavelength.
  • the colorimetric correctness determination unit 43 samples a plurality of received light intensities for each wavelength output from the light receiving unit 3 at a predetermined sampling interval by the control unit 41 (41a, 41b). . Next, the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets by a known calculation method. Then, the colorimetric correctness determination unit 43 compares each of the plurality of spectral reflectances to determine whether or not the same value is included therein. As a result of the determination, if the same value is included, the colorimetric correctness determination unit 43 determines that the colorimetry is correct.
  • the colorimetric correctness determination unit 43 Judge that the colorimetry is not correct. This comparison and determination may be performed for each wavelength, and may be representatively performed for one or a plurality (for example, three, five, ten, twenty, etc.) of each wavelength.
  • the colorimetric correctness determination unit 43 samples a plurality of received light intensities for each wavelength output from the light receiving unit 3 at a predetermined sampling interval by the control unit 41 (41a, 41b). . Next, the colorimetric correctness determination unit 43 obtains a plurality of spectral reflectances from each of the plurality of sets by a known calculation method. Next, the colorimetric correctness determination unit 43 obtains a plurality of color values from each of the plurality of spectral reflectances by a known calculation method. Then, the colorimetric correctness determination unit 43 determines whether or not the same value is included in the plurality of color values.
  • the colorimetric correctness determination unit 43 determines that the colorimetry is correct. On the other hand, if the same value is not included, the colorimetric correctness determination unit 43 Judge that the colorimetry is not correct.
  • the colorimetric correctness determination unit 43 may cause the color processing unit 42 to obtain the spectral reflectance and the color value. In the above description, the colorimetric correctness determination unit 43 determines whether or not the same value includes a predetermined number or more that is set in advance, and if the result of the determination includes a predetermined number or more of the same value, The colorimetric correctness determination unit 43 determines that the colorimetry is correct. On the other hand, if the colorimetry correctness determination unit 43 does not include a predetermined number or more of the same values, the colorimetry correctness determination unit 43 determines that the colorimetry is not correct. Also good.
  • the control unit 41b obtains the number of the same value, and obtains the obtained number and a predetermined value set in advance.
  • the output method of the determination result is determined by comparing with the threshold value. As a result of this comparison, when the obtained number is equal to or greater than the threshold value, it is determined that the output method outputs the color obtained from the same value from the output unit 6 (partial output), and the control unit 41b Next, process S12 is performed.
  • the unit 41b executes the process S6.
  • the control unit 41b outputs the color obtained from the same value from the output unit 6.
  • the colorimetric correctness determination unit 43 includes the plurality of outputs, the plurality of colors in the measurement object SP obtained based on the plurality of outputs, and the plurality of the plurality of outputs. It is determined whether or not a plurality of pieces of determination target data, which is any of a plurality of pieces of data generated until a plurality of colors in the object to be measured SP are obtained from the output of, are within a predetermined range A.
  • the A determination result, the B determination result, which is the result of determining whether the standard deviation or variance in the plurality of determination target data is within a predetermined B range, and the plurality Whether the colorimetry is correct or not is determined based on a plurality of C-th determination results that are the results of determining whether or not the determination target data includes the same value. According to this, since the correctness of the colorimetry is determined based on a plurality of the Ath to Cth determination results, the correctness of the colorimetry can be determined more appropriately.
  • the colorimetric correctness determination unit 43 determines the correctness of the colorimetry based on the Ath and Bth determination results, and the Ath and Bth determination results are determinations that the colorimetry is correct. When the colorimetry is finally determined to be correct and at least one of the Ath and Bth determination results is a determination that the colorimetry is not correct, the colorimetry is ultimately not correct. judge.
  • the colorimetric correctness determination unit 43 determines whether the colorimetry is correct based on the Ath and Cth determination results, and the Ath and Cth determination results are determinations that the colorimetry is correct.
  • the colorimetric correctness determination unit 43 determines whether the colorimetry is correct based on the Bth and Cth determination results, and the Bth and Cth determination results are determinations that the colorimetry is correct. In the case where it is finally determined that the colorimetry is correct and at least one of the B-th and C-th determination results is a determination that the colorimetry is not correct, the colorimetry is finally correct Judge that there is no.
  • the colorimetric correctness determination unit 43 determines the correctness of the colorimetry based on the Ath to Cth determination results, and the Ath to Cth determination results are determinations that the colorimetry is correct. In the case where it is finally determined that the colorimetry is correct, and at least one of the Ath to Cth determination results is a determination that the colorimetry is not correct, the colorimetry is finally correct. Judge that there is no. In this case, the colorimetric correctness determination unit 43 finally determines that the colorimetry is correct when at least two of the Ath to Cth determination results indicate that the colorimetry is correct. In other cases except this case, it may be finally determined that the color measurement is not correct.
  • the color measurement device D obtains the color of the object SP to be measured in step S3, and then determines whether the color measurement is correct in step S4. You may obtain
  • the color measuring device D may determine the color of the object SP to be measured when it is determined that the color measurement is correct as a result of determining whether the color measurement is right or wrong. Further, in this case, when the colorimetric device D obtains the spectral reflectance and the color of the object SP to be measured in determining whether the colorimetry is correct or not, when determining the color of the object SP, May be used.
  • the color measurement device D includes the light source unit 1, the integrating sphere 2, the light receiving unit 3, the control processing unit 4 (4a, 4b), the input unit 5,
  • the output unit 6, the IF unit 7, and the storage unit 8 are integrally provided, the measurement unit that performs measurement and the color and colorimetry of the object SP to be measured based on the measurement result measured by the measurement unit. It may be a device that is provided separately from the main body for determining correctness.
  • the measurement unit includes a light source unit 1, an integrating sphere 2, and a light receiving unit 3, and the main body unit includes a control processing unit 4 (4a, 4b), an input unit 5, and an output.
  • Such a main body can be configured by a desktop type or notebook type computer, for example.
  • a color measurement device includes a light source unit that irradiates a measurement aperture with illumination light at a constant light intensity for a predetermined time, and a light reception unit that receives reflected light of the illumination light from an object to be measured that faces the measurement aperture.
  • a color processing unit that obtains the color of the object to be measured based on the output of the light receiving unit, and a color measurement correct / incorrect determination that determines whether the color measurement is correct based on a plurality of temporally continuous outputs in the light receiving unit A determination unit; and an output unit that outputs a determination result of the colorimetric correctness determination unit.
  • the light source unit includes a light source that emits light serving as the illumination light at the predetermined light intensity for the predetermined time.
  • the output unit outputs at least that the color measurement is not correct when the color measurement correctness determination unit determines that the color measurement is not correct.
  • the output unit outputs at least that the color measurement is correct when the color measurement correctness determination unit determines that the color measurement is correct.
  • the above colorimetric device further includes an integrating sphere into which the light emitted from the light source of the light source unit is incident and the measurement aperture is formed.
  • the colorimetric apparatus irradiates the measurement aperture with illumination light at a constant light intensity for a predetermined time, a plurality of times from the light receiving unit in a shorter time than when using conventional flash light emission. Outputs can be obtained successively in time. For this reason, it is only necessary to perform fixing for a shorter time, and therefore the colorimetric device can be applied to a measurement area having a relatively small area.
  • the measuring device includes a handy type and a bench top type, and when the measuring device is a handy type, the fixing is related to the description of the function and effect of the present specification, and the measuring device and the object to be measured.
  • the fixing refers to the fixing at a predetermined position on the object to be measured with respect to the description of the function and effect of this specification. means.
  • the colorimetric device determines whether the colorimetry is correct based on the plurality of outputs and outputs the determination result. Therefore, the measurement when the colorimetry is correct can be used from the determination result. A measurement result with higher reproducibility can be obtained by using the measurement when the colorimetry is correct from the result. Therefore, the color measuring device can be applied to a measurement area having a relatively small area, and a measurement result having higher reproducibility can be obtained in a shorter time.
  • the above-described colorimetric apparatus further includes a control unit that changes an output method of the determination result output from the output unit based on a determination result of the colorimetric correctness determination unit.
  • the output method of the determination result includes an output method of outputting a warning that the colorimetry is not correct to the output unit.
  • the above-described colorimetric device includes an output method of outputting a color obtained from a part of the plurality of outputs to the output unit.
  • the light source unit includes a white light emitting diode that emits white light.
  • the light source unit further includes a drive circuit that drives the white light emitting diode with a constant current.
  • a colorimetric device uses a white light emitting diode (white LED), a light source that irradiates the measurement aperture with illumination light at a constant light intensity for a predetermined time by driving the white LED with a constant current.
  • white LED white light emitting diode
  • the colorimetric correctness determination unit includes the plurality of outputs, the plurality of colors in the measurement object obtained based on the plurality of outputs, and Determining whether any of a plurality of data generated from the plurality of outputs until a plurality of colors in the object to be measured are within a predetermined range. Judge whether the color is right or wrong.
  • the plurality of outputs fall within a certain range, while when the colorimetry is not correctly performed, the plurality of outputs vary.
  • the plurality of colors in the object to be measured obtained based on the plurality of outputs are similarly within a certain range when the color measurement is correctly performed, while the color measurement is not performed. If not implemented correctly, it will vary.
  • a plurality of data generated from the plurality of outputs until a plurality of colors in the object to be measured are obtained, when the colorimetry is performed correctly, falls within a certain range, If colorimetry is not performed correctly, it will vary.
  • the colorimetric device includes the plurality of outputs, a plurality of colors in the measurement object obtained based on the plurality of outputs, and a plurality of colors in the measurement object from the plurality of outputs. Whether or not the color measurement is correct is determined by determining whether any of a plurality of pieces of data generated up to obtaining the color is within a predetermined range. it can.
  • the colorimetric correctness determination unit includes the plurality of outputs, the plurality of colors in the measurement object obtained based on the plurality of outputs, and Determining whether the standard deviation or variance in any of the plurality of data generated from the plurality of outputs until the plurality of colors in the object to be measured are obtained is within a predetermined range. Thus, whether the colorimetry is correct or not is determined.
  • Such a colorimetric device includes a plurality of outputs, a plurality of colors in the object to be measured determined based on the plurality of outputs, and a plurality of colors in the object to be measured from the plurality of outputs. Whether the color measurement is correct or not is determined by determining whether the standard deviation or variance in any of the plurality of data generated until the color of the color is determined is within a predetermined range. Whether the color is correct or not can be determined appropriately.
  • the colorimetric correctness determination unit includes the plurality of outputs, the plurality of colors in the measurement object obtained based on the plurality of outputs, and By determining whether or not the same value is included in any of the plurality of data generated from the plurality of outputs until the plurality of colors in the device under test are obtained. Whether the colorimetry is correct or not is determined.
  • Such a colorimetric device includes a plurality of outputs, a plurality of colors in the object to be measured determined based on the plurality of outputs, and a plurality of colors in the object to be measured from the plurality of outputs.
  • whether the color measurement is correct or not is determined by determining whether or not the same value is included therein. Correctness can be determined appropriately.
  • the colorimetric correctness determination unit includes the plurality of outputs, the plurality of colors in the measurement object obtained based on the plurality of outputs, and Whether a plurality of determination target data, which are any of a plurality of data generated from the plurality of outputs to obtaining a plurality of colors in the object to be measured, are within a predetermined range
  • a determination result which is a result of determining whether or not, a B determination result which is a result of determining whether or not a standard deviation or variance in the plurality of determination target data is within a predetermined B range, and Whether the colorimetry is correct or not is determined based on a plurality of C-th determination results that are the results of determining whether or not the plurality of determination target data includes the same value.
  • the colorimetric method includes an irradiation step of irradiating the measurement aperture with illumination light at a constant light intensity for a predetermined time, and receiving the reflected light of the illumination light from the object to be measured facing the measurement aperture.
  • the color measurement method includes an irradiation step of irradiating the measurement aperture with the illumination light by the light source unit, and a light receiving step of receiving the reflected light of the illumination light by the measurement object facing the measurement aperture.
  • a color processing step for determining the color of the object to be measured based on the output of the light receiving step, and a colorimetric correctness determination step for determining whether the colorimetry is correct based on a plurality of temporally continuous outputs in the light receiving step.
  • illumination light is irradiated onto the measurement aperture at a predetermined light intensity for a predetermined time, so that a plurality of outputs can be output in the light receiving process in a shorter time than when using conventional flash light emission. Can be obtained successively in time. For this reason, since the fixing only needs to be performed for a shorter time, the color measurement method can be applied to a measurement area having a relatively small area.
  • the colorimetric method determines whether the colorimetry is correct based on the plurality of outputs and outputs the determination result. Therefore, the measurement can be used when the colorimetry is correct from the determination result. A measurement result with higher reproducibility can be obtained by using the measurement when the colorimetry is correct from the result. Therefore, the color measurement method can be applied to a measurement area having a relatively small area, and a measurement result having higher reproducibility can be obtained in a shorter time.
  • a color measuring device and a color measuring method for measuring the color of an object to be measured can be provided.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

Dans ce dispositif de mesure de couleur et procédé de mesure de couleur : une ouverture de mesure est éclairée avec une lumière d'éclairage pendant un temps prescrit et avec une intensité de lumière constante ; la lumière réfléchie comprenant la lumière d'éclairage qui a été réfléchie par un objet mesuré en regard de l'ouverture de mesure est reçue ; une évaluation est effectuée sur la base d'une pluralité de signaux de sortie de réception de lumière, en continu au fil du temps, pour évaluer si la mesure de couleur est correcte ou incorrecte ; et le résultat d'évaluation est fourni. Par ce moyen, le dispositif de mesure de couleur et le procédé de mesure de couleur de la présente invention peuvent être appliqués même à une région de mesure qui présente une surface relativement petite, et des résultats de mesure ayant une reproductibilité plus élevée peuvent être obtenus dans un délai plus court.
PCT/JP2017/046294 2017-01-16 2017-12-25 Dispositif et procédé de mesure de couleur WO2018131442A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001320592A (ja) * 2000-05-08 2001-11-16 Fujitsu Ltd プリンタプロファイル作成装置とプリンタプロファイル作成方法
JP2002214042A (ja) * 2000-12-11 2002-07-31 Sekichin Sai デジタル水色測定システム
JP2009239529A (ja) * 2008-03-26 2009-10-15 Canon Inc 色処理装置およびその方法
JP2011097549A (ja) * 2009-09-30 2011-05-12 Fujifilm Corp 印刷情報取得方法、プロファイル生成方法、プロファイル生成装置及びプログラム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001320592A (ja) * 2000-05-08 2001-11-16 Fujitsu Ltd プリンタプロファイル作成装置とプリンタプロファイル作成方法
JP2002214042A (ja) * 2000-12-11 2002-07-31 Sekichin Sai デジタル水色測定システム
JP2009239529A (ja) * 2008-03-26 2009-10-15 Canon Inc 色処理装置およびその方法
JP2011097549A (ja) * 2009-09-30 2011-05-12 Fujifilm Corp 印刷情報取得方法、プロファイル生成方法、プロファイル生成装置及びプログラム

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