CN113518903A

CN113518903A - Calibration system, calibration device, and program

Info

Publication number: CN113518903A
Application number: CN202080017772.XA
Authority: CN
Inventors: 永井浩大; 出石聪史; 上松干夫
Original assignee: Konica Minolta Inc
Current assignee: Konica Minolta Inc
Priority date: 2019-03-05
Filing date: 2020-02-27
Publication date: 2021-10-19
Anticipated expiration: 2040-02-27
Also published as: WO2020179629A1; JPWO2020179629A1; JP7459863B2; CN113518903B

Abstract

A plurality of combination information in which the identification information of the 1 st colorimetric device (2) of the stimulus value type, the identification information of the measurement object (1), and the spectral emission characteristics of the measurement object measured by the 2 nd colorimetric device (5) based on the spectral colorimetric method are combined in association with each other are stored in advance. When performing calibration of a 1 st color measuring device (2) that has measured an object to be measured (1), an optimum combination is determined from a plurality of combination information based on identification information of the 1 st color measuring device (2) and the object to be measured (1), and a measurement value by the 1 st color measuring device (2) is corrected based on spectral emission characteristics included in the determined combination and spectral responsivity of the 1 st color measuring device (2) that has performed the measurement.

Description

Calibration system, calibration device, and program

Technical Field

The present invention relates to a calibration system, a calibration device, and a program for use in performing calibration of a colorimetric device of a stimulus value type including at least 3 color channels.

Background

A stimulus value type color measuring device, such as a color luminance meter having spectral responsivity approximate to an isochromatic function, which receives light having a wavelength selected by an optical filter or the like using a sensor and has a stimulus value corresponding to a light intensity as a measured value, has a measurement error caused by a difference between the spectral responsivity of the color measuring device formed by the spectral characteristics of the optical filter and the sensor and the target spectral responsivity such as an isochromatic function.

Therefore, there is known a technique of estimating a coefficient for correcting a measurement value as expressed by the following formula (1) using information on the spectral responsivity of a color measuring device and the spectral emission characteristics of an object to be measured, and correcting the measurement value by the correction coefficient (for example, patent documents 1 and 2).

P＊S＊CM1＝P＊CMF …(1)

In the above equation (1), P represents a matrix of spectral values of the emission spectrum of the target light source, S represents a matrix of spectral values of the spectral sensitivity of the filter of the measuring device, CMF represents a matrix of spectral values of the spectral evaluation function of the reference defined in CIE1931, and CM1 represents a calibration matrix (correction coefficient).

That is, as shown in fig. 15, in a factory or the like, spectral emission characteristics (spectral data) of an object to be measured are measured by a color measuring device (also referred to as a spectral measuring device) based on a spectral color measuring method, and spectral responsivity of a stimulus value type color measuring device (also referred to as a filter measuring device) is measured in advance. Then, a correction coefficient CM1 is estimated from the spectral responsivity of the filter measuring instrument and the spectral radiation characteristic of the object to be measured, and the actual measurement value by the filter measuring instrument is corrected by the correction coefficient, thereby obtaining an accurate measurement value.

Documents of the prior art

Patent document

Patent document 1: U.S. Pat. No. 9163990 publication

Patent document 2: japanese laid-open patent publication No. 2012-215570

Disclosure of Invention

However, in

patent documents

1 and 2, a combination of a spectroscopic measuring device for measuring the spectral emission characteristics of an object to be measured and a filter measuring device using an optical filter is not considered. The spectral emission characteristics of the object to be measured also depend on the measurement position, the measurement angle, and the like. That is, the correction coefficient CM1 is present for each of a plurality of combinations of spectral emission characteristics of a measurement object as a reference, a filter measuring device, and various parameters that cause errors. Therefore, in order to calculate an appropriate correction coefficient CM1 and perform calibration with high accuracy, it is necessary to select an optimum combination from among a plurality of combinations, but such an idea is not shown in

patent documents

1 and 2.

Further, if the spectral radiation characteristics of the measurement object, the spectral responsivity of the filter measuring device, and the like are measured every time of calibration and the correction coefficient is estimated from the measurement result, the spectral radiation characteristics and the like must be measured every time the measurement object and the spectral measuring device are changed, which is inefficient and requires time for the calibration operation.

The present invention has been made in view of the above-described technical background, and an object of the present invention is to provide a calibration system, a calibration device, and a program that can easily and efficiently perform highly accurate calibration even under different measurement conditions when a measurement target is measured by a stimulus value type colorimeter including at least 3 color channels.

The above object is achieved by the following means.

(1) A calibration system is provided with: a storage unit that stores in advance a plurality of combination information in which 1 or more 1 st identification information for specifying 1 st colorimetric devices of 1 or more stimulus value types including at least 3 color channels, 1 or more 2 nd identification information for specifying 1 or more measurement objects, and spectral emission characteristics of the measurement objects measured by 1 or more 2 nd colorimetric devices based on a spectral colorimetric method are associated with each other; a determination unit configured to determine an optimum combination of the measured 1 st color measurement device, the measured object, and spectral emission characteristics of the measured object from among the plurality of combination information stored in the storage unit, based on 1 st identification information of the 1 st color measurement device and 2 nd identification information of the measured object, when calibration of the 1 st color measurement device in which measurement of the measured object is performed; and a calibration unit that corrects the measurement value by the 1 st color measuring device based on the spectral emission characteristic of the measurement object included in the combination determined by the determination unit and the spectral responsivity of the 1 st color measuring device that has been measured.

(2) The calibration system according to item 1 above, wherein the combination information is stored in the storage unit in advance as a table.

(3) The calibration system according to the

above item

1 or 2, wherein the combination information includes information for specifying the measurement position in each combination, and the determination means determines the optimum combination based on the measurement position of the 1 st color measurement device used for measurement.

(4) The calibration system according to any one of the preceding items 1 to 3, wherein the combination information includes information for specifying a measurement angle for each combination, and the determination means determines the optimum combination based on the measurement angle of the 1 st color measuring device used for measurement.

(5) The calibration system according to any one of the preceding items 1 to 4, wherein the combination information includes information on a measurement environment for each combination, and the determination means determines an optimum combination based on the measurement environment of the 1 st color measuring device used for measurement.

(6) The calibration system according to any one of the preceding items 1 to 5, wherein the discrimination unit discriminates the combination of the objects whose spectral radiation characteristics are approximate from the combination information when the 2 nd information indicating the object to be measured by the 1 st colorimetric device is not present in the combination information stored in the storage unit.

(7) The calibration system according to the aforementioned item 6, wherein the storage means stores an initial value table for determining a weight for a combination of the objects to be measured having the spectral radiation characteristics approximated thereto.

(8) The calibration system according to the aforementioned item 6 or 7, wherein the user can input the evaluation of the combination determined by the determination means.

(9) The calibration system according to any one of the preceding items 1 to 8, wherein when a correction coefficient based on spectral emission characteristics of the measurement object and spectral responsivity of a 1 st color measuring device used for measurement is set as a 1 st correction coefficient, a correction coefficient for calibrating a measurement value based on the 1 st color measuring device to a value obtained by a 2 nd measuring device is set as a 2 nd correction coefficient, and a correction coefficient for correlating the 1 st correction coefficient with the 2 nd correction coefficient is set as a 3 rd correction coefficient, the 3 rd correction coefficient is included in the combination stored in the storage unit, the calibration unit calculates the 1 st correction coefficient, and calculates the 2 nd correction coefficient from the 1 st correction coefficient calculated and the 3 rd correction coefficient included in the combination discriminated by the discrimination unit, and corrects the measurement value using the 2 nd correction coefficient calculated.

(10) The calibration system according to any one of the preceding items 1 to 9, wherein the spectral responsivity of the 1 st color measurement device is stored in the 1 st color measurement device.

(11) The calibration system according to any one of the preceding items 1 to 9, wherein the spectral responsivity of the 1 st color measurement device is stored in the storage unit.

(12) The calibration system according to any one of the preceding items 1 to 11, wherein the 3 rd identification information for specifying the 2 nd colorimetric device is combined with the 1 st identification information, the 2 nd identification information, and the spectral radiation characteristic in association with each other in the combination information.

(13) A calibration device is provided with: a storage unit that stores in advance a plurality of combination information in which 1 or more 1 st identification information for specifying 1 st colorimetric devices of 1 or more stimulus value types including at least 3 color channels, 1 or more 2 nd identification information for specifying 1 or more measurement objects, and spectral emission characteristics of the measurement objects measured by 1 or more 2 nd colorimetric devices based on a spectral colorimetric method are associated with each other; a determination unit configured to determine an optimum combination of the measured 1 st color measurement device, the measured object, and spectral emission characteristics of the measured object from among the plurality of combination information stored in the storage unit, based on 1 st identification information of the 1 st color measurement device and 2 nd identification information of the measured object, when calibration of the 1 st color measurement device in which measurement of the measured object is performed; and a calibration unit that corrects the measurement value by the 1 st color measuring device based on the spectral emission characteristic of the measurement object included in the combination determined by the determination unit and the spectral responsivity of the 1 st color measuring device that has been measured.

(14) A calibration device capable of communicating with an external database device, the external database device including a storage unit that stores in advance a plurality of combination information in which 1 or more 1 st identification information for specifying 1 st colorimetric devices of 1 or more stimulus value types including at least 3 color channels, 1 or more 2 nd identification information for specifying 1 or more measurement objects, and spectral radiation characteristics of the measurement objects measured by 1 or more 2 nd colorimetric devices based on a spectral colorimetry method are associated and combined, the calibration device comprising: a determination unit configured to determine an optimum combination of the measured 1 st color measurement device, the measured object, and spectral emission characteristics of the measured object from among the plurality of combination information stored in the storage unit, based on 1 st identification information of the 1 st color measurement device and 2 nd identification information of the measured object, when calibration of the 1 st color measurement device in which measurement of the measured object is performed; and a calibration unit that corrects the measurement value by the 1 st color measuring device based on the spectral emission characteristic of the measurement object included in the combination determined by the determination unit and the spectral responsivity of the 1 st color measuring device that has been measured.

(15) The calibration device according to the preceding item 13 or 14, wherein the combination information is stored in the storage unit in advance as a table.

(16) The calibration device according to any one of the preceding items 13 to 15, wherein each combination in the combination information includes information for specifying a measurement position, and the determination means determines the optimum combination based on the measurement position of the 1 st color measurement device used for measurement.

(17) The calibration device according to any one of the preceding items 13 to 16, wherein the combination information includes information for specifying a measurement angle for each combination, and the determination means determines the optimum combination based on the measurement angle of the 1 st color measuring device used for measurement.

(18) The calibration device according to any one of the preceding items 13 to 17, wherein the combination information includes information on a measurement environment for each combination, and the determination means determines the optimum combination based on the measurement environment of the 1 st color measuring device used for measurement.

(19) The calibration device according to any one of the preceding items 13 to 18, wherein the discrimination unit discriminates the combination of the objects whose spectral radiation characteristics are approximate from the combination information when the 2 nd information indicating the object measured by the 1 st color measuring device is not present in the combination information stored in the storage unit.

(20) The calibration device according to the aforementioned item 19, wherein the storage means stores an initial value table for determining a weight for a combination of the objects to be measured whose spectral radiation characteristics are approximate.

(21) The calibration device according to the aforementioned item 19 or 20, wherein the user can input the evaluation of the combination determined by the determination means.

(22) The alignment device according to any one of the preceding items 13 to 21, wherein, when a correction coefficient based on the spectral radiation characteristic of the object to be measured and the spectral responsivity of the 1 st color measuring device used in the measurement is set as a 1 st correction coefficient, a correction coefficient for calibrating the measurement value based on the 1 st color measuring device to a value obtained by the 2 nd color measuring device is set as a 2 nd correction coefficient, and a correction coefficient for correlating the 1 st correction coefficient with the 2 nd correction coefficient is set as a 3 rd correction coefficient, the 3 rd correction coefficient is included in the combination stored in the storage unit, the calibration unit calculates the 1 st correction coefficient, and calculates the 2 nd correction coefficient from the 1 st correction coefficient calculated and the 3 rd correction coefficient included in the combination discriminated by the discrimination unit, and corrects the measurement value using the 2 nd correction coefficient calculated.

(23) The calibration device according to any one of the preceding items 13 to 22, wherein the spectral responsivity of the 1 st color measurement device is stored in the 1 st color measurement device.

(24) The calibration device according to any one of the preceding items 13 to 22, wherein the spectral responsivity of the 1 st color measurement device is stored in the storage unit.

(25) The calibration device according to any one of the preceding items 13 to 24, wherein the 3 rd identification information for specifying the 2 nd colorimeter is combined with the 1 st identification information, the 2 nd identification information, and the spectral radiation characteristics in association with each other in the combined information.

(26) A program for causing a computer of a calibration device to execute a discrimination step and a calibration step, the calibration device including a storage unit storing in advance a plurality of combination information in which 1 or a plurality of 1 st identification information for identifying 1 st or a plurality of stimulus value types of 1 st color measurement device including at least 3 color channels, 1 or a plurality of 2 nd identification information for identifying 1 or a plurality of measurement objects, and spectral radiation characteristics of the measurement objects measured by 1 or a plurality of 2 nd color measurement devices based on a spectral color measurement method are combined in association, wherein in the discrimination step, when calibration of the 1 st color measurement device in which measurement of the measurement object is performed, based on the 1 st identification information of the 1 st color measurement device and the 2 nd identification information of the measurement object, the method includes the steps of determining an optimum combination of the 1 st color measuring device, the object to be measured, and the spectral emission characteristic of the object to be measured from among the plurality of combination information stored in the storage unit, and correcting the measurement value by the 1 st color measuring device in the calibration step based on the spectral emission characteristic of the object to be measured included in the combination determined in the determination step and the spectral responsivity of the 1 st color measuring device subjected to the measurement.

(27) A program for causing a computer of a calibration device to execute a discrimination step and a calibration step, the calibration device being capable of communicating with an external database device including a storage unit that stores in advance a plurality of combination information in which 1 or more 1 st identification information for specifying 1 st colorimetric device of 1 or more stimulus value types including at least 3 color channels, 1 or more 2 nd identification information for specifying 1 or more measurement objects, and spectral emission characteristics of the measurement objects measured by 1 or more 2 nd colorimetric devices based on a spectral colorimetry method are combined in association, wherein in the discrimination step, when calibration of the 1 st colorimetric device in which measurement of the measurement object is performed, the calibration device is configured to perform the calibration based on the 1 st identification information of the 1 st colorimetric device and the 2 nd identification information of the measurement object, the method includes the steps of determining an optimum combination of the 1 st color measuring device, the object to be measured, and the spectral emission characteristic of the object to be measured from among the plurality of combination information stored in the storage unit, and correcting the measurement value by the 1 st color measuring device in the calibration step based on the spectral emission characteristic of the object to be measured included in the combination determined in the determination step and the spectral responsivity of the 1 st color measuring device subjected to the measurement.

According to the inventions described in the aforementioned items (1) and (13), the 1 st or plural 1 st identification information of the 1 st colorimetric device for identifying the 1 st or plural stimulus value types including at least 3 color channels, the 1 nd or plural 2 nd identification information for identifying the 1 st or plural measurement objects, the respective spectral responsivities of the 1 st colorimetric device, and the plural combined information obtained by combining the spectral radiation characteristics of the measurement objects measured by the 1 or plural 2 nd colorimetric devices based on the spectral colorimetric method are stored in the storage unit in advance. Then, when the calibration of the 1 st color measuring device which has measured the object to be measured is performed, the optimum combination of the 1 st color measuring device which has performed the measurement, the object to be measured, and the spectral emission characteristics of the object to be measured is discriminated from the plurality of combination information stored in the storage means on the basis of the 1 st identification information of the 1 st color measuring device and the 2 nd identification information of the object to be measured, and the measurement value by the 1 st color measuring device is corrected on the basis of the spectral emission characteristics of the object to be measured included in the discriminated combination and the spectral responsivity of the 1 st color measuring device which has performed the measurement.

In this way, an optimum combination corresponding to the 1 st color measuring device and the object to be measured that are actually used is selected from among a plurality of combinations stored in advance in the storage means, and the spectral emission characteristics included in the selected combination are used for calibration of the 1 st color measuring device, so that even if the 1 st color measuring device and the object to be measured that are used for measurement change, highly accurate calibration can be easily performed in accordance with the conditions. Further, it is not necessary to measure the spectral radiation characteristics of the measurement object, the spectral responsivity of the filter measuring device, and the like at each calibration and estimate the correction coefficient from the measurement result, so that the calibration operation can be performed efficiently in a short time.

According to the inventions described in the preceding items (2) and (15), the determination means can determine the optimum combination from among the tables of combination information stored in the storage means.

According to the inventions described in the aforementioned items (3) and (16), the optimum combination can be determined in consideration of the measurement position of the 1 st measurement device, and therefore calibration with higher accuracy can be performed.

According to the inventions described in the preceding items (4) and (17), the optimum combination can be determined in consideration of the measurement angle of the 1 st measurement device, and therefore calibration can be performed with higher accuracy.

According to the inventions described in the aforementioned items (5) and (18), since the optimum combination can be determined in consideration of the information on the measurement environment of the 1 st measurement device, calibration with higher accuracy can be performed.

According to the inventions described in the aforementioned items (6) and (19), when the 2 nd information indicating the measurement object measured by the 1 st colorimetric device is not present in the combination information, the combination of the measurement objects having the similar spectral radiation characteristics is discriminated from the combination information.

According to the inventions described in the aforementioned items (7) and (20), the combination of the objects to be measured having similar spectral radiation characteristics can be discriminated from the initial value table of the weights.

According to the inventions described in the preceding items (8) and (21), since the user can input the evaluation of the determined combination, the input evaluation can be referred to in determining the optimum combination.

According to the inventions described in the aforementioned items (9) and (22), since the 1 st correction coefficient is set as the 1 st correction coefficient based on the spectral radiation characteristic of the object to be measured and the spectral responsivity of the 1 st color measuring device used in the measurement, the 3 rd correction coefficient is included in the combination stored in the storage means when the correction coefficient for calibrating the measurement value based on the 1 st color measuring device to the value obtained by the 2 nd color measuring device is set as the 2 nd correction coefficient, and the correction coefficient for associating the 1 st correction coefficient with the 2 nd correction coefficient is set as the 3 rd correction coefficient, the 1 st correction coefficient can be calculated, the 2 nd correction coefficient can be calculated from the calculated 1 st correction coefficient and the 3 rd correction coefficient included in the discriminated combination, and the measurement value can be corrected using the calculated 2 nd correction coefficient.

According to the inventions described in the aforementioned items (10) and (23), the spectral responsivity of the 1 st color measurement device can be called from the 1 st color measurement device.

According to the inventions described in the aforementioned items (11) and (24), the spectral responsivity of the 1 st color measuring device can be retrieved from the storage unit.

According to the inventions described in the aforementioned items (12) and (25), since the 3 rd identification information for specifying the 2 nd color measuring device is combined in association with the 1 st identification information, the 2 nd identification information, and the spectral radiation characteristics in the combination information, when the user holds the 2 nd color measuring device specified by the 3 rd identification information, it is possible to perform processing of measuring again the spectral radiation characteristics of the measurement object by using the 2 nd color measuring device and correcting the spectral radiation characteristics based on the result.

According to the invention described in the aforementioned item (14), since the optimum combination corresponding to the 1 st color measuring device and the measurement object to be actually used is selected from the plurality of combinations stored in the storage means in advance, and the spectral emission characteristics included in the selected combination are used for calibration of the 1 st color measuring device, even if the 1 st color measuring device and the measurement object used for measurement are changed, highly accurate calibration in accordance with the conditions can be easily and efficiently performed. Further, since the storage means is provided in an external database device different from the calibration device, the combination information can be managed collectively by the database device, and the calibration device can be connected to the database device as necessary to acquire necessary information.

According to the invention described in the aforementioned item (26), the computer of the calibration device having the storage means for storing in advance 1 or more 1 st identification information for identifying 1 st colorimeter of 1 or more stimulus value types including at least 3 color channels, 1 or more 2 nd identification information for identifying 1 or more objects to be measured, each spectral responsivity of the 1 st colorimeter, and a plurality of combination information in which spectral radiation characteristics of the objects to be measured by the 1 or more 2 nd colorimeters based on the spectral colorimetry method are combined in association can be caused to execute the following processing: when performing calibration of a 1 st color measuring device that has performed measurement of an object to be measured, an optimum combination of the 1 st color measuring device that has performed the measurement, the object to be measured, and spectral emission characteristics of the object to be measured is determined from among a plurality of combination information stored in a storage unit based on the 1 st identification information of the 1 st color measuring device and the 2 nd identification information of the object to be measured, and a measurement value by the 1 st color measuring device is corrected based on the spectral emission characteristics of the object to be measured included in the determined combination and the spectral responsivity of the 1 st color measuring device that has performed the measurement.

According to the invention described in the aforementioned item (27), the following processing can be executed by a computer of a calibration device capable of communicating with an external database device having a storage unit in which 1 or more 1 st identification information for specifying 1 st colorimetric devices of 1 or more stimulus value types including at least 3 color channels, 1 or more 2 nd identification information for specifying 1 or more measurement objects, and a plurality of combination information in which spectral emission characteristics of the measurement objects measured by the 1 or more 2 nd colorimetric devices based on the spectral colorimetric method are combined in association with each other are stored in advance: when performing calibration of a 1 st color measuring device that has performed measurement of an object to be measured, an optimum combination of the 1 st color measuring device that has performed the measurement, the object to be measured, and spectral emission characteristics of the object to be measured is determined from among a plurality of combination information stored in a storage unit based on the 1 st identification information of the 1 st color measuring device and the 2 nd identification information of the object to be measured, and a measurement value by the 1 st color measuring device is corrected based on the spectral emission characteristics of the object to be measured included in the determined combination and the spectral responsivity of the 1 st color measuring device that has performed the measurement.

Drawings

Fig. 1 is a diagram showing a schematic configuration of a calibration system according to an embodiment of the present invention.

Fig. 2 is a diagram showing an example of a combination table stored in the database server.

Fig. 3 is a flowchart for explaining the operation of the calibration device in the calibration system shown in fig. 1 under the combination table of fig. 2.

Fig. 4 is a diagram showing another example of the combination table.

Fig. 5 is a flowchart for explaining the operation of the calibration device in the calibration system shown in fig. 1 under the combination table of fig. 4.

Fig. 6 is a diagram showing still another example of the combination table.

Fig. 7 is a flowchart for explaining the operation of the calibration device in the calibration system shown in fig. 1 under the combination table of fig. 6.

Fig. 8 is a diagram for explaining an arbitrary calibration method.

Fig. 9(a) is a diagram showing the relationship between correction coefficients at the time of factory shipment, and (B) is a diagram showing the relationship between correction coefficients at the time of use by the user.

Fig. 10 is a flowchart for explaining still another operation of the calibration device in the calibration system shown in fig. 1.

Fig. 11 is a diagram showing an example of a neural network.

Fig. 12(a) to (C) are diagrams for explaining differences in spectral shape in the case of comparing two measurement objects (display panels).

Fig. 13 is a diagram showing an example of the initial value table of the weight.

Fig. 14 is a diagram showing a configuration of a calibration device according to another embodiment of the present invention.

Fig. 15 is a diagram for explaining a basic calibration method.

Description of the symbols

1: an object to be measured; 2: a filter measuring device (No. 1 colorimetric device); 3: a calibration device; 31: a CPU; 33: a non-volatile memory; 34: a measurement section; 35: a determination unit; 36: a calibration unit; 37: a communication unit; 4: a database server; 41: a storage unit; 5: a spectroscopic measuring instrument (No. 2 colorimetric device); 6: an external environment measurement unit.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[ embodiment 1]

Fig. 1 is a diagram showing a schematic configuration of a calibration system according to an embodiment of the present invention. The calibration system includes a 1 st colorimetric device 2 for measuring an object 1 to be measured, a calibration device 3 for receiving measurement data from the 1 st colorimetric device 2 and calibrating the 1 st colorimetric device 2, and a database server 4.

The object 1 to be measured is a display panel such as a liquid crystal display in this embodiment, but is not limited to the display panel.

The 1 st color measurement device 2 is a stimulus value type color measurement device that receives light having a wavelength selected by an optical filter or the like by a sensor and takes a stimulus value corresponding to a light intensity as a measurement value, and includes at least 3 color channels. That is, there are 3 or more filters having different light dispersion and transmission properties and 3 or more sensors for converting light received via the filters into corresponding measurement signals. Hereinafter, the 1 st colorimeter is also referred to as a filter measuring instrument.

The calibration device 3 is constituted by a personal computer, and functionally includes a measurement unit 34, a determination unit 35, a calibration unit 36, and a communication unit 37 in addition to the CPU31, the RAM32, and the nonvolatile memory 33 such as a hard disk.

The CPU31 collectively controls the entire calibration device 3, and the RAM32 provides a work area when the CPU31 operates in accordance with an operation program stored in the nonvolatile memory 33 or the like.

The nonvolatile memory 33 stores an operation program of the CPU31 and various data. Examples of the various data include measurement data as Raw data (Raw data) of the object to be measured acquired from the filter measuring device 2, a filter measuring device ID as identification information for specifying the filter measuring device 2, and spectral responsivity of the filter measuring device 2.

The measurement unit 34 acquires measurement data from the filter measuring device 2, and also acquires the filter measuring device ID and the spectral responsivity. The acquired measurement data, filter measurement device ID, and spectral responsivity are stored in the nonvolatile memory 33 as described above. Further, a measurement object ID (also referred to as a Display Type) for specifying the measurement object 1 to be measured is acquired. The measurement object ID is acquired, for example, by user input. The filter determinator ID or the like may be acquired in response to a user input.

The determination unit 35 determines an optimum combination of the filter measuring instrument 2 and the object 1 to be measured, which is suitable for actual measurement, from the combination information stored in the database server 4 for accurate calibration, which will be described later.

The calibration unit 36 calibrates the filter measuring instrument 2 using the spectral emission characteristics and the like of the object 1 included in the optimum combination determined by the determination unit 35.

The communication unit 37 is a communication interface for connecting the calibration device 3 to the database server 4, the filter measuring instrument 2, and the like via the network 5.

The database server 4 is configured by a personal computer or the like, and includes a storage unit 41, and the storage unit 41 stores a plurality of pieces of combination information for performing calibration of the filter measuring instrument 2 as a combination table.

Describing the combination table in detail, as described above, the filter measuring device 2 has a measurement error due to a difference between the spectral responsivity and the target spectral responsivity such as the isochromatic function, and therefore, it is preferable to estimate the correction coefficient using the spectral responsivity of the filter measuring device 2 and the information of the spectral radiation characteristic of the object 1 to correct the measurement value and perform the calibration of the filter measuring device 2.

However, correction coefficients exist for a plurality of combinations each including spectral emission characteristics of the object 1, the filter measuring device 2, and various parameters that cause errors. Therefore, in order to calculate an appropriate correction coefficient and perform calibration with high accuracy, it is necessary to select an optimum combination from among a plurality of combinations. Further, if the spectral radiation characteristics of the object 1 are measured every time and the correction coefficient is estimated from the measurement result, the spectral radiation characteristics must be measured every time the object 1 is changed, which is inefficient and requires time for calibration work.

Therefore, in this embodiment, a plurality of filter measuring devices 2 of different types, a plurality of measurement objects 1 of different types, and a 2 nd colorimeter device (hereinafter also referred to as a spectroscopic measuring device) 5 based on a spectroscopic colorimetry method are combined, and the spectroscopic radiation characteristics of the measurement objects 1 are measured in advance by the spectroscopic measuring device 5. In addition, the spectral responsivity of the filter measuring instrument 2 is also measured.

As described above, the measurement object ID (display type) and the filter measuring instrument ID for identifying them are given to the measurement object 1 and the filter measuring instrument 2, but in this embodiment, the spectroscopic measuring instrument ID is also given to the spectroscopic measuring instrument 5 as a preferable mode. The obtained spectral radiation characteristics, the ID of the spectrometer 5 for which the spectral radiation characteristics were measured, the ID of the filter measuring device 2, and the ID of the object 1 to be measured are associated with each other and stored as a combination table in the storage unit 41 of the database server 4.

Fig. 2 shows an example of the combination table stored in the database server 4. In the combination table, the filter measurement instrument ID, the measurement object ID (display type), the spectroscopic measurement instrument ID, and the spectroscopic radiation characteristic are stored in association with each other. Although not shown in the drawings, the spectral responsivity of each filter measuring device 2 may be associated with the filter measuring device ID, the object ID to be measured, the spectral measuring device ID, and the like, and defined in the table, or may be stored and held in the filter measuring device 2 itself.

Using this combination table, the calibration device 3 receives (Input) the ID of the filter measuring device 2 and the ID of the object 1 to be measured, which are used in actual measurement, and determines the optimum combination of the filter measuring device ID and the object ID from among the combination information in the combination table, and determines the spectral radiation characteristics of the corresponding spectroscopic measuring device 5 and the object 1 to be measured thereby (Output).

Next, the operation of the calibration device 3 in the calibration system shown in fig. 1 will be described with reference to the flowchart of fig. 3.

First, at the time of factory shipment of the filter measuring instrument 2 or the like, the filter measuring instrument 2, various kinds of measuring objects 1, and various kinds of spectroscopic measuring instruments 5 are combined, the spectral emission characteristics of the measuring object 1 are measured, the results thereof are associated with the filter measuring instrument ID, the measuring object ID, and the spectroscopic measuring instrument ID, and are stored as combination information in the storage unit 41 of the database server 4 as a combination table. The spectral responsivity of the filter measuring instrument 2 is also measured, and stored in the filter measuring instrument 2 itself or stored in association with the filter measuring instrument ID in the combination table of the database server 4. By repeating this operation, a large amount of combination information is accumulated in the database server.

The user uses the delivered filter measuring device 2 to measure the object 1, but the measuring unit 34 of the calibration device 3 acquires the measurement data, the filter measuring device ID, and the spectral responsivity from the filter measuring device 2, and acquires the display type of the object 1 by user input or the like (step S01).

Next, the determination unit 35 of the calibration apparatus 3 accesses the database server 4 via the network, and acquires combination information from the combination table of the database server 4 (step S01).

The determination unit 35 further compares the acquired combination information with the filter measuring instrument ID and the display type acquired by the measurement unit 34, and determines a combination in which the filter measuring instrument ID and the display type match from among the combination information (step S01). Then, the spectrometer 5 and the spectral radiation characteristics indicated by the spectrometer ID included in the discriminated combination are determined as the optimum spectrometer 5 and spectral radiation characteristics corresponding to the filter measuring device 2 and the object 1 to be measured which are actually used (step S01).

For example, in the combination table of fig. 2, if the filter meter ID is a and the display type is the circled number 1, the spectroscopic meter ID is determined to be a and the spectroscopic radiation characteristic is determined to be α.

Next, the calibration unit 36 estimates a correction coefficient (corresponding to the 1 st correction coefficient) CM1 using the determined spectral radiation characteristics and the spectral responsivity of the filter measuring instrument 2 (step S02), and corrects the measurement data (Raw data) using the estimated correction coefficient CM1 (step S03).

As described above, in this embodiment, an optimum combination corresponding to the filter measuring device 2 and the measurement object 1 to be actually used is selected from among a plurality of combination information including combinations of spectral radiation characteristics of the filter measuring device 2, the measurement object 1, the spectrometer 5, and the measurement object 1, which are stored in the database server 4 in association in advance, and spectral radiation characteristics included in the selected combination are used for estimation of the correction coefficient in calibration of the filter measuring device 2, so that even if the filter measuring device 2 and the measurement object 1 used for measurement are changed or even if the user does not hold the optimum spectrometer 5, highly accurate calibration in accordance with the conditions can be easily and efficiently performed.

In this embodiment, since the spectroscopic measurement device ID for specifying the spectroscopic measurement device 5 is included in the combination information, when the user holds the spectroscopic measurement device 5 specified by the spectroscopic measurement device ID, the spectroscopic radiation characteristic of the object 1 can be measured again by using the spectroscopic measurement device 5, and the correction coefficient CM1 can be estimated from the result. In this case, since the spectral radiation characteristics are already obtained, calibration with high traceability (traceability) can be performed.

[ 2 nd embodiment ]

In embodiment 1, the plurality of pieces of combination information defined in the combination table shown in fig. 2 are pieces of combination information in which the filter measuring instrument ID, the display type of the object 1 to be measured, the spectroscopic measuring instrument ID, and the spectral radiation characteristic are associated with each other.

However, since the correction coefficient CM1 varies depending on the measurement position in the object to be measured, if the measurement position varies, calibration cannot be performed with high accuracy.

Therefore, in this embodiment, the measurement position in the object 1 is changed in various combinations, the spectral radiation characteristics are measured in advance, and information for specifying the measurement position is also stored in the combination table in association with the filter measuring instrument ID, the display type, the spectral measuring instrument ID, and the spectral radiation characteristics as shown in the combination table of fig. 4.

The operation of the calibration device 3 in the case where the combination table of fig. 4 is used in the calibration system of fig. 1 will be described with reference to the flowchart of fig. 5.

When performing calibration of measurement of the object 1 using the filter measuring device 2, the measuring unit 34 of the calibration apparatus 3 acquires measurement data, the filter measuring device ID, and the spectral responsivity from the filter measuring device 2, and acquires information on the measurement position and the display type by user input or the like (step S11).

Next, the determination unit 35 of the calibration apparatus 3 accesses the database server 4 via the network, and acquires combination information from the combination table of the database server 4 (step S11).

The determination unit 35 further compares the acquired combination information with the filter measuring instrument ID, the display type, and the measurement position acquired by the measurement unit 34, and determines a combination in which the filter measuring instrument ID, the display type, and the measurement position match from among the combination information (step S11). Then, the spectrometer 5 and the spectral radiation characteristics indicated by the spectrometer ID included in the discriminated combination are determined as the optimum spectrometer 5 and spectral radiation characteristics corresponding to the filter measuring device 2 and the object 1 used for measurement (step S11).

For example, if the filter measurement device ID is a, the display type is the circled number 1, and the measurement position is the measurement position 1, the spectroscopic measurement device ID is determined to be a, and the spectroscopic radiation characteristic is determined to be α.

Next, the calibration unit 36 estimates a correction coefficient CM1 using the determined spectral radiation characteristics and the spectral responsivity of the filter measuring instrument 2 (step S12), and corrects the measurement data using the estimated correction coefficient CM1 (step S13).

As described above, in this embodiment, since the combination information stored in advance in the database server 4 includes information for specifying the measurement position, the optimum combination can be determined in consideration of the measurement position, and calibration can be performed with higher accuracy.

[ embodiment 3 ]

Since the correction coefficient CM1 differs not only in the measurement position but also in the measurement angle in the object to be measured, accurate calibration cannot be performed if the measurement angle differs.

Therefore, in this embodiment, measurement is performed in advance by changing not only the measurement position but also the measurement angle in the object 1 under various combinations, and information for specifying the measurement position and the measurement angle is also stored in the combination table in association with the filter measuring instrument ID, the display type, the spectroscopic measuring instrument ID, and the spectral radiation characteristic as shown in the combination table of fig. 6.

The operation of the calibration device 3 in the case where the combination table of fig. 6 is used in the calibration system of fig. 1 will be described with reference to the flowchart of fig. 7.

When performing calibration of measurement of the object 1 using the filter measuring device 2, the measuring unit 34 of the calibration apparatus 3 acquires measurement data, the filter measuring device ID, and the spectral responsivity from the filter measuring device 2, and acquires information on the measurement position and the measurement angle, and the display type by user input or the like (step S21).

Next, the determination unit 35 of the calibration apparatus 3 accesses the database server 4 via the network, and acquires combination information from the combination table of the database server 4 (step S21).

The determination unit 35 further compares the acquired combination information with the filter measuring instrument ID, the display type, the measurement position, and the measurement angle acquired by the measurement unit 34, and determines a combination in which the filter measuring instrument ID, the display type, the measurement position, and the measurement angle match from among the combination information (step S21). Then, the spectrometer 5 and the spectral radiation characteristics indicated by the spectrometer ID included in the discriminated combination are determined as the optimum spectrometer 5 and spectral radiation characteristics corresponding to the filter measuring device 2 and the object 1 used for measurement (step S21). For example, if the filter measuring instrument ID is a, the display type is the circled number 1, the measurement position is the measurement position 1, and the measurement angle is θ, the spectroscopic measuring instrument ID is determined as a, and the spectroscopic radiation characteristic is determined as α.

Next, the calibration unit 36 estimates a correction coefficient CM1 using the determined spectral radiation characteristics and the spectral responsivity of the filter measuring instrument 2 (step S22), and corrects the measurement data using the estimated correction coefficient CM1 (step S23).

As described above, in this embodiment, the combination information stored in advance in the database server 4 includes information for specifying the measurement angle in addition to the measurement position, so that the optimum combination can be determined in consideration of the measurement angle, and calibration can be performed with higher accuracy.

In addition, the combination table may include only information on the measurement angle without including both the measurement position and the measurement angle.

[ 4 th embodiment ]

When the spectral measurement device 5 and the filter measurement device 2 are compared with each other, a difference occurs. Therefore, there is a technique (arbitrary calibration) of calculating a correction coefficient from a difference between the measurement values and correcting the measurement data of the filter measuring device 2.

Here, when Value [ Spectrometer ] is used as a matrix of stimulus values obtained from spectroscopic data, Value [ Filter type measurement instrument ] is used as a matrix of stimulus values obtained from measurement data (Raw data) obtained by a Filter measuring device, and CM2 is used as a calibration matrix (2 nd correction coefficient), the following is expressed:

Value[Spectrometer]＝CM2＊Value[Filter type measuring instrument]] …(2)。

since optical characteristics such as polarization characteristics and directivity are different between a light source (spectroscopic measuring device) for obtaining the spectral responsivity of the filter measuring device 2 and a display panel as the object 1 to be measured, the 1 st correction coefficient (CM1) and the 2 nd correction coefficient (CM2) do not completely match each other.

Therefore, as shown in the explanatory view of arbitrary calibration in fig. 8, before factory shipment, the spectroscopic measuring device 5 and the filter measuring device 1 are used to measure the display panel as the same object 1 to be measured at the same timing, and the 1 st correction coefficient (CM1) and the 2 nd correction coefficient (CM2) are obtained. When the obtained difference between CM1 and CM2 is set as the 3 rd correction coefficient (CM3) as shown in fig. 9(a) showing the relationship between correction coefficients at the time of factory shipment, as shown in fig. 9(B) showing the relationship between correction coefficients at the time of user use, the following are provided:

CM2’＝CM1’+CM3＝CM1’+(CM2·CM1) …(3)

here, CM1 'and CM 2' indicate the 1 st and 2 nd correction coefficients when the user actually uses the filter measuring device. The 3 rd correction coefficient (CM3) may be obtained by a ratio of the 1 st correction coefficient (CM1) to the 2 nd correction coefficient (CM2) as shown in the following formula (4).

CM2’＝CM1’＊(CM2/CM1)) …(4)

Then, identification Information (ID) is given to the filter measuring instrument 2 and the object 1, and the spectral responsivity of each filter measuring instrument 2, the information on the spectral radiation characteristics and the filter measuring instrument 2 used for the measurement of each object 1, and the 3 rd correction coefficient (CM3) are associated with each other and held as a combination table.

When the filter measuring device 2 actually measures the object 1, the measuring unit 34 of the calibration device 3 holds the ID of the filter measuring device 2 and the ID of the object 1 in a set with the acquired measurement data (Raw data). Then, a combination matching the filter measuring instrument ID and the object ID is discriminated from the combination information, and the spectroscopic measuring instrument ID, the spectroscopic radiation characteristic, and the 3 rd correction coefficient included in the combination are determined (CM 3).

Then, a 1 st correction coefficient (CM1 ') is estimated from the spectral responsivity and spectral radiation characteristic of the filter measuring instrument 2, a 2 nd correction coefficient (CM 2') is derived from the formula (3) or the formula (4) from the 1 st correction coefficient (CM1 ') and the 3 rd correction coefficient (CM3), and the measured value is corrected using the 2 nd correction coefficient (CM 2').

In this way, by holding the 3 rd correction coefficient (CM3) in the combination table, it is not necessary to perform any calibration each time before measurement, and the burden on the operator can be reduced.

[ other embodiments ]

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

For example, IDs as identification information are added to the filter measuring instrument 2, the measurement object 1, and the like, and the spectral responsivity of each filter measuring instrument 2, the measuring instrument information used for measurement of each measurement object 1, and the information of the spectral radiation characteristic are respectively grouped with (associated with) these IDs and held as a combination table. Then, as shown in the flowchart of fig. 10, at the time of actual measurement, information on the measurement environment (measurement environment parameters) is held in a set with the measurement data, such as the temperature, humidity, location, external light (illuminance of the measurement location), external electric field magnetic field, vibration of the measurement device, cleanliness of the measurement location, stability of the power supply, and ID of the operator involved in the measurement, which are acquired by the external environment measurement device 6 provided integrally with or separately from the calibration device 3, so that the trend of the measurement environment can be analyzed. The user may add information on the measurement environment (measurement environment parameters) to the combination table read into the determination unit 35. The flowchart of fig. 10 is the same as the flowchart of fig. 5 except that the information on the measurement environment (measurement environment parameters) is held in a group with the measurement data, and therefore, the same reference numerals are assigned to the steps, and detailed description thereof is omitted.

In the case where the same measurement object 1 is managed using a plurality of filter measurement devices 2, a lot or measurement device in which the measurement value has abnormally changed or linearly changed may be found from the measurement values of each lot or each measurement device stored in the database server 4, and the failure prediction may be performed in advance.

In the above embodiment, a combination in which the IDs of the filter measuring device 2 and the object 1 to be measured used in actual measurement match is selected from the combination information held in the combination table. However, by accumulating a large amount of such combination information, it is possible to acquire a combination of the objects to be measured 1 having similar spectral radiation characteristics by using so-called AI (artificial intelligence) or the like even when the same ID as the object to be measured 1 does not exist in the combination information.

In this case, it is preferable that an initial value table for determining the weight of the combination of the measurement object 1 having the spectral radiation characteristic approximated thereto be stored in the database server 4 together with the combination table.

Here, an example of the initial value table of the weight will be described. The initial value table of the weight means a table for specifying, from the spectral shape of the spectral emission characteristic of the measurement object, the ID (display type) of the measurement object having a similar spectral shape even when the measurement object (display panel) is different, and means, for example, the weight coefficient W in the neural network.

An example of a neural network is shown, which is represented by a schematic diagram as in fig. 11. O1 of FIG. 11¹、o2¹、o3¹If the difference is large at each wavelength, 1 is output, and if the difference is small, 0 is output (step function: if u is larger than the threshold b, 1 is output, and if small, 0 is output).

[ formula 1]

In addition, o1²、o2²Each is obtained by the following formula.

o1²＝o1¹＊W11+o2¹＊W21+o3¹＊W31

o2²＝o1¹＊W12+o2¹＊W22+o3¹＊W32

Then, according to o1²、o2²The structure of the coincidence or the structure of the non-coincidence is judged according to the respective values.

When two measurement objects (display panels) (one is an LED and the other is an OLED) are compared, the spectral shapes of the LED and the OLED show no difference in relative intensity at 450nm, a slight difference in relative intensity at 550nm, and a large difference in relative intensity at 650nm, as shown in fig. 12(a) to (C).

Based on this premise, the weight coefficient W (initial value table of weights) shown in fig. 13 is determined. An example is shown in which two objects to be measured 1 are present, and when they are compared, there is no difference at 450nm, but there is a difference at 550nm and 650nm (o 1)¹＝0，o2¹＝1，o3¹1), at this time, o1²、o2²In accordance with the initial value table of weights (fig. 13), the following is obtained:

o1²＝0＊0.01+1＊0.6+1＊0.9＝1.5

o2²＝0＊0.01+1＊0.3+1＊0.1＝0.4

that is, the probability of inconsistency is 79% [1.5/(1.5+0.4) 100], and the probability of consistency is 21% [0.4/(1.5+0.4) 100 ].

The above example is a comparative example of 3 sites of wavelength, but by performing comparison every 1nm (401) over the entire visible light range (380nm to 780nm), comparison can be performed with higher accuracy.

By referring to the initial value table of weights in this way, it is possible to select a combination of the objects to be measured 1 having a commonality, and estimate an approximate correction coefficient.

Further, the updating device may automatically create a new combination in which the measurement object IDs are replaced with the measurement object IDs having commonalities in the selected combination, and store the new combination in the database server. Further, the user may input an evaluation of the approximate combination, automatically create a new combination based on the evaluation, and store the new combination in the database server. This increases the number of pieces of combination information even if the user or the like does not create a new combination table, and thus reduces the effort of creating a combination table.

In the above embodiment, the combination table is stored in the database server 4, and the calibration device 3 acquires the combination information from the database server 4 via the network. However, as shown in fig. 14, the storage combination table may be stored in a nonvolatile memory (storage unit) 33 in the calibration device 3. In this configuration, the calibration apparatus 3 does not need to acquire the combination information from the external database server 4. The operation of the calibration device 3 in fig. 14 is the same as the operation of the calibration device 3 in the calibration system shown in fig. 1, except that the combination information is acquired in the present device as described above.

Industrial applicability of the invention

The invention can be utilized when performing calibration of a colorimetric device of stimulus value type comprising at least 3 color channels.

Claims

1. A calibration system is provided with:

a storage unit that stores in advance a plurality of combination information in which 1 or more 1 st identification information for specifying 1 st colorimetric devices of 1 or more stimulus value types including at least 3 color channels, 1 or more 2 nd identification information for specifying 1 or more measurement objects, and spectral emission characteristics of the measurement objects measured by 1 or more 2 nd colorimetric devices based on a spectral colorimetric method are associated with each other;

a determination unit configured to determine an optimum combination of the measured 1 st color measurement device, the measured object, and spectral emission characteristics of the measured object from among the plurality of combination information stored in the storage unit, based on 1 st identification information of the 1 st color measurement device and 2 nd identification information of the measured object, when calibration of the 1 st color measurement device in which measurement of the measured object is performed; and

and a calibration unit for correcting the measurement value by the 1 st color measuring device based on the spectral emission characteristic of the measurement object included in the combination determined by the determination unit and the spectral responsivity of the 1 st color measuring device subjected to the measurement.

2. The calibration system of claim 1,

the combination information is stored in the storage unit in advance as a table.

3. The calibration system of claim 1 or 2, wherein,

information for determining a measured position is included in each combination in the combination information,

the determination means determines the optimum combination based on the measurement position of the 1 st color measuring device used for the measurement.

4. The calibration system of any of claims 1-3, wherein,

each combination of the combination information includes information for specifying a measurement angle,

the determination means determines the optimum combination based on the measurement angle of the 1 st color measuring device used for the measurement.

5. The calibration system of any one of claims 1 to 4,

each combination of the combination information includes information of a measurement environment,

the determination means determines the optimum combination based on the measurement environment of the 1 st color measuring device used for the measurement.

6. The calibration system of any one of claims 1 to 5,

the discrimination unit discriminates a combination of the measurement objects having the similar spectral radiation characteristics from the combination information when the 2 nd information indicating the measurement object measured by the 1 st colorimetric device is not present in the combination information stored in the storage unit.

7. The calibration system of claim 6,

the storage means stores an initial value table for determining a weight for a combination of objects to be measured having similar spectral radiation characteristics.

8. The calibration system of claim 6 or 7, wherein,

the user can input the evaluation of the combination discriminated by the discrimination unit.

9. The calibration system of any one of claims 1 to 8,

the method includes the step of including a 3 rd correction coefficient in a combination stored in the storage means when a correction coefficient based on spectral radiation characteristics of the object to be measured and spectral responsivity of a 1 st color measuring device used in the measurement is set as the 1 st correction coefficient, a correction coefficient for calibrating a measurement value based on the 1 st color measuring device to a value obtained by a 2 nd color measuring device is set as the 2 nd correction coefficient, and a correction coefficient for associating the 1 st correction coefficient with the 2 nd correction coefficient is set as the 3 rd correction coefficient,

the calibration means calculates the 1 st correction coefficient, calculates the 2 nd correction coefficient from the calculated 1 st correction coefficient and the 3 rd correction coefficient included in the combination determined by the determination means, and corrects the measurement value using the calculated 2 nd correction coefficient.

10. The calibration system of any one of claims 1 to 9,

the spectral responsivity of the 1 st color measuring device is stored in the 1 st color measuring device.

11. The calibration system of any one of claims 1 to 9,

the 1 st colorimetric device has spectral responsivity stored in the storage unit.

12. The calibration system of any one of claims 1 to 11,

in the combination information, the 3 rd identification information for specifying the 2 nd colorimetric device is combined in association with the 1 st identification information, the 2 nd identification information, and the spectral radiation characteristic.

13. A calibration device is provided with:

14. A calibration device for a calibration device is provided,

the calibration device is capable of communicating with an external database device, the external database device having a storage unit that stores in advance a plurality of combination information in which 1 or more 1 st identification information for identifying 1 st or more stimulus value types of 1 st color measuring devices including at least 3 color channels, 1 or more 2 nd identification information for identifying 1 or more measurement objects, and spectral emission characteristics of the measurement objects measured by 1 or more 2 nd color measuring devices based on a spectral color measuring method are associated and combined,

the calibration device is provided with:

15. The calibration device of claim 13 or 14, wherein,

16. The calibration device of any one of claims 13 to 15,

17. The calibration device according to any one of claims 13 to 16,

18. The calibration device of any one of claims 13 to 17,

19. The calibration device of any one of claims 13 to 18,

20. The calibration device of claim 19,

21. The calibration device of claim 19 or 20, wherein,

22. The calibration device of any one of claims 13 to 21,

23. The calibration device of any one of claims 13 to 22,

24. The calibration device of any one of claims 13 to 22,

25. The calibration device of any one of claims 13 to 24,

in the combination information, the 3 rd identification information for determining the 2 nd colorimetric device is combined in association with the 1 st identification information, the 2 nd identification information, and the spectral emission characteristic.

26. A program for causing a computer of a calibration apparatus to execute a discrimination step and a calibration step,

the calibration device is provided with a storage unit which stores a plurality of combination information in advance, wherein the combination information is formed by combining 1 or a plurality of 1 st identification information of a 1 st colorimetric device for respectively determining 1 or a plurality of stimulus value types including at least 3 color channels, 1 or a plurality of 2 nd identification information for determining 1 or a plurality of measurement objects and spectral radiation characteristics of the measurement objects measured by 1 or a plurality of 2 nd colorimetric devices based on a spectral colorimetric method,

in the determining step, when the calibration of the 1 st color measuring device that has measured the object to be measured is performed, an optimal combination of the 1 st color measuring device that has measured, the object to be measured, and the spectral emission characteristics of the object to be measured is determined from among the plurality of combination information stored in the storage unit based on the 1 st identification information of the 1 st color measuring device and the 2 nd identification information of the object to be measured,

in the calibration step, the measurement value by the 1 st color measuring device is corrected based on the spectral emission characteristic of the measurement object included in the combination determined in the determination step and the spectral responsivity of the 1 st color measuring device that has been measured.

27. A program for causing a computer of a calibration apparatus to execute a discrimination step and a calibration step,

the calibration device is capable of communicating with an external database device having a storage unit that stores in advance a plurality of combination information in which 1 or more 1 st identification information for specifying 1 or more stimulus value types of 1 st color measurement device including at least 3 color channels, 1 or more 2 nd identification information for specifying 1 or more measurement objects, and spectral emission characteristics of the measurement objects measured by 1 or more 2 nd color measurement devices based on a spectral color measurement method are combined in association with each other,