JP5375826B2 - Photometric color measuring device - Google Patents

Abstract

Provided is a colorimeter (21) which is constituted to comprise a plurality of probe units (P) and a body unit (22) made capable of controlling the colorimetric actions of the probe units (P) and mounting and demounting the probe units (P).  These probe units (P) are composed of a spectroscopic probe unit (Pn) and stimulation value direct-reading probe units (P1 - Pn-1).  On the basis of the measurement result of the spectroscopic probe unit (Pn), therefore, the colorimeter (21) thus constituted can calibrate the stimulation value direct-reading probe units (P1 - Pn-1) easily.  By the control of the body unit (22), the stimulation value direct-reading probe units (P1 - Pn-1) and the spectroscopic probe unit (Pn) are enabled to execute the measurements selectively or simultaneously according to an object to be measured.

Description

  The present invention relates to a photometric colorimetric apparatus, and more particularly to a photometric colorimetric apparatus that has a plurality of probe units and can measure multiple points simultaneously using a chromaticity meter or a spectrophotometric colorimeter.

  Conventionally, in a photometric colorimetric device that uses a measurement probe connected to the main unit, the reference measurement light is measured with the connected measurement probe before measurement, and calibration data is calculated from the measured value and recorded in the main unit. The color value is calculated using the calibration data at the time of measurement (for example, see Patent Document 1 (D1)).

  In general, the stimulus value direct reading type probe unit has three optical sensors each including a filter unit and a sensor unit, and the spectral response of each of them includes the spectral transmittance of the filter unit and the spectral value of the sensor unit. It is determined based on the degree of response. When this spectral response is completely the same as the color matching function defined in so-called CIE 1931, the chromaticity and luminance obtained using the stimulus value direct reading type probe part do not include an absolute value error. . However, the spectral response of a stimulus value direct-reading colorimeter cannot be made to completely match the color matching function, and the difference between them causes an absolute value error.

  Therefore, in order to reduce this absolute value error, a technique of calibrating a stimulus value direct reading type measuring instrument by using a more accurate spectroscopic measuring instrument is used (for example, see Patent Document 2 (D2)). . By this method, for example, at the time of factory shipment or periodic inspection, the photometric colorimetric apparatus has been calibrated by using a measuring instrument having a relatively small absolute value error such as a spectroscopic measuring instrument.

  On the other hand, a spectroscopic measuring instrument has a polychromator including a dispersion element such as a diffraction grating and a plurality of photoelectric conversion elements arranged in an array. Such a spectroscopic measuring instrument directly reads a stimulus value. Compared with a type of photometric colorimetric device, it is possible to measure with higher accuracy, but there are cases where the light receiving sensitivity is relatively low. For this reason, such a spectroscopic measuring instrument may be disadvantageous when measuring a low-luminance display device, for example.

  In the prior art as described above, at the time of calibration, a colorimeter is connected to a personal computer and a spectroscopic measuring instrument, and data is transferred by performing individual measurements, and calculation and setting of calibration coefficients are performed. The operation was very complicated.

  In addition, when using a spectroscopic type measuring device and a stimulus value direct reading type measuring device according to the luminance of the measurement target light, or when it is desired to evaluate these two types of measuring devices at the same time, two measuring devices are used. Therefore, connection, setting, and measurement work of the measuring instrument become complicated.

Japanese Patent Laid-Open No. 3-44511 JP-A-9-49765

  The present invention is an invention made in view of the above circumstances, and its purpose is to easily calibrate a stimulus value direct reading type probe unit in a photometric colorimetric apparatus having a plurality of probe units, Furthermore, another object is to provide a photometric colorimetric device that enables selective or simultaneous measurement of a stimulus value direct reading type probe unit and a spectroscopic type probe unit according to a measurement object.

  A photometric colorimetric device according to the present invention includes a plurality of probe units and one or a plurality of main body units configured to control measurement operations of the plurality of probe units and to be detachable from the plurality of probe units. The plurality of probe units include a spectroscopic probe unit and a stimulus value direct reading type probe unit. Therefore, the photometric colorimetry apparatus having such a configuration can easily calibrate the stimulus value direct reading type probe unit based on the measurement result of the spectroscopic type probe unit, and can control the measurement object by controlling the main body unit. Accordingly, it is possible to selectively or simultaneously execute the stimulus value direct reading type probe unit and the spectroscopic type probe unit.

  The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

It is a block diagram which shows the electrical constitution of the colorimeter which concerns on 1st Embodiment of this invention. It is a figure which shows typically the structure of the optical sensor part in the spectroscopic probe part of the colorimeter shown in FIG. FIG. 2 is a functional block diagram of a control unit that controls a measurement operation and a calibration operation in the colorimeter shown in FIG. 1. It is a flowchart for demonstrating the measurement operation | movement and calibration operation | movement by the control part shown in FIG. It is a graph for demonstrating the spectral response of a stimulus value direct reading type measuring device and a spectroscopic type measuring device. It is a block diagram for demonstrating the switching measurement operation | movement of a probe part. FIG. 7 is a graph showing a change in luminance with respect to a change in input signal level for explaining white balance adjustment of a display in the colorimeter having the configuration shown in FIG. 6 and showing a state before adjustment. It is a figure which shows the display display screen and probe arrangement | positioning in the adjustment of the said white balance adjustment. It is a graph which shows the luminance change with respect to the input signal level change for demonstrating the said white balance adjustment, and shows the state in adjustment. It is a graph which shows the luminance change with respect to the input signal level change for demonstrating the said white balance adjustment, and shows the state after adjustment. It is a figure which shows the display screen and probe arrangement | positioning in the case of measuring the crosstalk amount of a display. It is a block diagram which shows the electrical constitution of the colorimeter which concerns on 2nd Embodiment of this invention. In a 2nd form, it is a graph for demonstrating the method of comprising the sensor which has a desired spectral response degree by combining multiple sensors with a different spectral response degree mutually. In a 2nd form, it is a graph for demonstrating the method of comprising the sensor which has a desired spectral response degree by combining multiple sensors with a different spectral response degree mutually. It is a block diagram which shows the electric constitution of the colorimeter which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the electric constitution of the colorimeter which concerns on 3rd Embodiment of this invention. It is a flowchart for demonstrating operation | movement of the colorimeter which concerns on 4th Embodiment of this invention. It is a block diagram which shows the electrical structure of the colorimeter which can measure multipoint. It is a figure which shows typically the structure of the optical sensor part in a stimulus value direct reading type probe part. It is a graph which shows the spectral response degree of a stimulus value direct reading type measuring device. It is a block diagram for demonstrating the calibration method of the stimulus value direct reading type probe part in the colorimeter shown in FIG.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted suitably. Further, in this specification, when referring generically, it is indicated by a reference symbol without a suffix, and when referring to an individual configuration, it is indicated by a reference symbol with a suffix.

  First, the calibration of the colorimeter will be outlined. FIG. 18 is a block diagram showing an electrical configuration of a colorimeter capable of multipoint measurement. FIG. 19 is a diagram schematically illustrating a configuration of an optical sensor unit in a stimulus value direct reading type probe unit. FIG. 20 is a graph showing the spectral response of a stimulus value direct reading type measuring instrument. FIG. 21 is a block diagram for explaining a method of calibrating the probe unit of the stimulus value direct reading type in the colorimeter shown in FIG.

  The colorimeter 1 shown in FIG. 18 has a plurality of stimulus value direct reading type (filter type) probe parts p1, p2,..., Pn, which are routed through cables l1, l2,. The plurality of probes p are configured to be connected to a common main body 2. Then, each probe part p is directed to the measurement light source m such as a display so as to face each of the plurality of measurement sites m1, m2,..., Mn in the measurement light source m. The luminance value and the colorimetric value are measured simultaneously.

  The stimulus value direct reading type probe unit p includes an optical sensor unit 3, a signal amplification unit 4, and an interface unit 5. As shown in FIG. 19, the optical sensor unit 3 includes an objective lens 3b, a filter unit 3c, and a sensor unit 3d. The light 3a emitted from the light source m to be measured is condensed from the filter unit 3c to the sensor unit 3d through the objective lens 3b. Three optical filters 3cx, 3cy, 3cz are sequentially arranged in the circumferential direction in the filter unit 3c, and three sensors 3dx, 3dy, 3dz are also arranged in the circumferential direction in the sensor unit 3d. By combining each of the sensors 3dx, 3dy, and 3dz in the sensor unit 3d with each of the optical filters 3cx, 3cy, and 3cz in the filter unit 3c, the optical sensor unit 3 has a color matching function x (λ) defined by the CIE1931. ), Y (λ), and z (λ) are designed to have spectral responsivities (see broken lines in FIG. 20). The outputs of the sensors 3dx, 3dy, and 3dz are amplified by the signal amplifying unit 4 and then output to the main body 2 through the interface unit 5. The main body 2 receives a signal input from the optical sensor unit 3 through an interface unit 6 and is digitized by an analog / digital conversion unit (A / D unit) 7.

The digital values X, Y, and Z corresponding to the outputs of the sensors 3dx, 3dy, and 3dz obtained here are the spectral radiances of the light source m to be measured, S (λ), and the spectral values of the sensors 3dx, 3dy, and 3dz. When the responsiveness is x ′ (λ), y ′ (λ), and z ′ (λ), they are expressed by equations (1-1) to (1-3).
X = ∫S (λ) · x ′ (λ) dλ (1-1)
Y = ∫S (λ) · y ′ (λ) dλ (1-2)
Z = ∫S (λ) · z ′ (λ) dλ (1-3)
Here, λ is a wavelength, and the wavelength range is a wavelength region of visible light. Then, using the obtained digital values X, Y, and Z, the control unit 8 calculates chromaticity x, y and luminance Lv by performing calculations according to equations (2-1) to (2-3). can do.
x = X / (X + Y + Z) (2-1)
y = Y / (X + Y + Z) (2-2)
Lv = Y (2-3)

  The above-described measurement and calculation are sequentially performed for a plurality of probe units p in response to an operation from the operation unit 9, and the calculation result is stored in the memory 10, and the control unit is operated by the operation from the operation unit 9. 9 is displayed on the display unit 11 selectively or collectively.

  Here, in general, the spectral response of each of the stimulus value direct reading type probe units p is determined by the combination of the spectral transmittance of the filter unit 3c and the spectral response of the sensor unit 3d. If this spectral responsivity is completely the same as the color matching function defined in the CIE 1931, there will be no absolute value error in the chromaticity and luminance obtained using the stimulus value direct reading type probe unit p. However, as shown in FIG. 20, it is difficult to design the spectral response (solid line) of the stimulus value direct-reading color meter 1 so as to completely match the color matching function (dashed line). However, this causes an absolute value error.

  For this reason, in order to reduce this error, a method of calibrating a stimulus value direct reading type measuring device by using a more accurate spectroscopic type measuring device is used. By this method, calibration using a measuring device having a relatively small absolute value error, such as a spectroscopic measuring device, is performed at the time of factory shipment or periodic inspection. In the following, the flow of data processing in the case of calibrating the measuring device 1 including the stimulus value direct reading type probe units p1 to pn and the main body unit 2 shown in FIG. Will be described. The spectroscopic measuring instrument 12 is directly connected to a personal computer (PC) 13 that performs calibration, and the main body 2 of the measuring instrument 1 is connected to the personal computer 13 via its interface section 14. The same light source m to be measured is measured by the spectroscopic measuring instrument 12 and each stimulus value direct reading type probe unit p, and the measured values are respectively (X0, Y0, Z0), (X1, Y1, Z1), and the personal computer 13 captures these measured values (X0, Y0, Z0), (X1, Y1, Z1).

Then, the personal computer 13 sets the calibration coefficients AX, AY, AZ to the formula (3) in order to match the measurement values (X1, Y1, Z1) with large errors to the measurement values (X0, Y0, Z0) with small errors. -1) through the calculation of the formula (3-3), and stores it in the memory 10 of the main body 2.
AX = X0 / X1 (3-1)
AY = Y0 / Y1 (3-2)
AZ = Z0 / Z1 (3-3)

Thereafter, the measured values in the probe value p of the stimulus value direct reading type probe are the values before calibration (X1, Y1, Z1), as shown by the following equations (4-1) to (4-3), respectively. A calibration value (X2, Y2, Z2) multiplied by a calibration coefficient (AX, AY, AZ) is output to, for example, the display unit 11 or the like.
X2 = X1 × AX (4-1)
Y2 = Y1 × AY (4-2)
Z2 = Z1 × AZ (4-3)

  In the following, an embodiment will be described based on the calibration method of the colorimeter 1 including the stimulus value direct reading type probe unit p.

(Embodiment 1)
FIG. 1 is a block diagram showing an electrical configuration of a colorimeter according to the first embodiment of the present invention. FIG. 2 is a diagram schematically showing the configuration of the optical sensor unit in the spectroscopic probe unit of the colorimeter shown in FIG. FIG. 3 is a functional block diagram of a control unit that controls the measurement operation and the calibration operation in the colorimeter shown in FIG.

  In FIG. 1, the colorimeter 21 includes a plurality of probe portions P (P1, P2,..., Pn) and a main body portion 22 common to the plurality of probe portions P. It should be noted that in this colorimeter 21, a part of the plurality of probe parts P (probe part Pn in the example shown in FIG. 1) is a spectroscopic probe, and the remaining probe part P (FIG. 1). In the example shown in FIG. 4, the probe portions P1 to Pn-1) are stimulus value direct reading type (filter type) probes. These probe portions P are connected to the interface portion 28 of the main body portion 22 through connectors Q1, Q2,..., Qn that are detachable from the cables L1, L2,. In the colorimeter 21, for example, each probe unit P directly faces a plurality of measurement sites M 1, M 2,..., Mn−1 of the light source M to be measured with respect to the light source M to be measured such as a display. The luminance value and the colorimetric value are measured simultaneously.

  As shown in FIG. 19, for example, the optical sensor unit 3 of the stimulus value direct reading type probe units P1 to Pn-1 includes an objective lens 3b, a filter unit 3c, and a sensor unit 3d. Composed. On the other hand, as shown in FIG. 2, the spectroscopic probe portion Pn includes an objective lens 23b, an illumination lens 23c, a diffraction grating 23d, a condenser lens 23e, and a CCD linear sensor 23f. . The light 23a emitted from the light source M to be measured is condensed through the objective lens 23b, further converted into parallel light through the illumination lens 23c, and applied to the diffraction grating 23d. The reflected light reflected by the diffraction grating 23d is condensed on the CCD linear sensor 23f via the condenser lens 23e. Here, the reflection angle of the reflected light at the diffraction grating 23d differs depending on the wavelength, and therefore the image forming position on the CCD linear sensor 23f differs for each wavelength. Accordingly, the pixel output of the CCD linear sensor 23f is proportional to the wavelength-resolved light intensity, that is, the spectral energy. For example, when 41 pixels are arranged on the CCD linear sensor 23f so as to receive light in the visible wavelength range 380 to 780 nm (400 nm in width) dispersed by the diffraction grating 23d, the CCD linear sensor 23f Can obtain spectroscopic data with a pitch of 10 nm.

  Each pixel output of the CCD linear sensor 23f is amplified by the signal amplifier 24. Here, it should be noted that each pixel output after amplification is converted from an analog signal to a digital signal by an analog / digital conversion unit (A / D unit) 25, and each pixel of the digital signal is converted by a control unit 26. Based on the output, the spectral radiance S ′ (λ) of the light source M to be measured is calculated, converted to a predetermined signal format, and output from the interface unit 27 to the main body unit 22. A signal representing the type (spectral type) of the optical sensor unit 23 is added to the signal of the spectral radiance S ′ (λ) representing the measurement result. Alternatively, the colorimeter 21 may be configured so that a signal indicating the type (spectral type) of the optical sensor unit 23 is transmitted only once when the power is turned on or when the connector Q is connected. Good. The control unit 26 performs a measurement operation in response to a measurement instruction from the main body unit 22. The memory 33 stores, for example, a calibration coefficient or the like that is measured by a manufacturer or the like and used to calculate the spectral radiance S ′ (λ).

  Correspondingly, the spectral output signals from the sensors 3dx, 3dy, 3dz of the sensor unit 3d in the optical sensor unit 3 are also transmitted to the signal amplification unit 4 in the probe unit P1 to Pn-1 of the stimulus value direct reading type. Are respectively converted into digital signals by the analog / digital converter 25 'so that the digital values X, Y, Z according to the equations (1-1) to (1-3) are obtained. Entered in '. In the control unit 26 ′, the chromaticity x, y and the luminance Lv are calculated from these digital values X, Y, Z according to the equations (2-1) to (2-3), and converted into the predetermined signal format. Then, the data is output from the interface unit 27 to the main body unit 22. A signal representing the type (stimulus value direct reading type) of the optical sensor unit 3 is added to the signals of the chromaticity x, y and the luminance Lv representing the measurement result. Alternatively, the colorimeter 21 is configured so that a signal indicating the type (stimulus value direct reading type) of the optical sensor unit 3 is transmitted only once when the power is turned on or when connected to the connector Q. Also good.

  And the main-body part 22 is the interface part 28 which communicates with the interface part 27 of each probe part P, the control part 29 which controls a measurement and calibration operation | movement, the display part 30 which displays a measurement result, and a measurement result And the like, and an operation unit 32 for performing an input operation. Here, the spectral radiance S ′ (λ) obtained by the control unit 26 of the spectroscopic probe unit Pn is used as a measurement value as it is, and in the calibration mode, the stimulus value direct reading type probe units P1 to Pn are used. -1 control unit 26 'is used to obtain the calibration coefficients AX, AY, AZ used when calculating the chromaticity x, y and the luminance Lv.

The calculation of the calibration coefficients AX, AY, AZ is performed as follows. First, when the color matching functions are x (λ), y (λ), and z (λ), the control unit 29 performs the calculations of Expressions (5-1) to (5-3), The measured values X, Y, and Z of digital values can be calculated in the same manner as the stimulus value direct reading type probe units P1 to Pn-1.
X = ΣS ′ (λ) · x (λ) · Δλ (5-1)
Y = ΣS ′ (λ) · y (λ) · Δλ (5-2)
Z = ΣS ′ (λ) · z (λ) · Δλ (5-3)
Here, λ is the wavelength, the wavelength interval is the wavelength resolution of the CCD linear sensor 23f, and the wavelength range is the wavelength region of visible light.

  Subsequently, the chromaticity x, y and the luminance Lv are calculated by using the equations (2-1) to (2-3) in the same manner as the probe values P1 to Pn-1 of the stimulus value direct reading type. .

On the other hand, when a light source having a known spectral radiation distribution (S (λ)) is measured at the time of shipping adjustment or the like, and the spectral measurement value of the spectral probe Pn at that time is S ″ (λ) The calibration coefficient A (λ) is obtained by the following equation (6) and is stored in the memory 33 together with the identification information of the spectroscopic probe portion Pn as described above.
A (λ) = S (λ) / S ″ (λ) (6)

Therefore, the spectroscopic measurement value S ′ ″ (λ) is corrected by the following equation (7) with respect to the spectroscopic measurement value S ′ ″ (λ) obtained for an arbitrary light source M to be measured: An accurate spectroscopic measurement value S ′ (λ) is input to the main body 22.
S ′ (λ) = A (λ) × S ′ ″ (λ) (7)

  For the accurate spectroscopic measurement value S ′ (λ) obtained by the spectroscopic probe unit Pn thus obtained, the control unit 29 uses the measurement values of the stimulus value direct reading type probe units P1 to Pn−1 as the spectroscopic probe Pn. In the calibration mode for calibrating with the measured values, the measured values X1, Y1, and Z1 of the stimulus value direct reading type probe units P1 to Pn-1 are acquired via the interface units 27 and 28, while the spectroscopic measurement is performed. The measured values X, Y, and Z are obtained from the value S ′ (λ) by the equations (5-1) to (5-3), and the results are set as the measured values X0, Y0, Z0, and the equation (3-1). Through the use of (3-3), the calibration coefficients (AX, AY, AZ) of the probe values P1 to Pn-1 of the stimulus value direct reading type are obtained. The control unit 29 sets (stores) the obtained calibration coefficient (AX, AY, AZ) in the memory 33 by the control unit 26 ′ via the interface units 28 and 27.

  Thus, the difference between the spectral response of the optical sensor unit 23 and the color matching function, which was an error factor in the stimulus value direct reading type probe units P1 to Pn-1, can be hardly generated. Therefore, in the colorimeter 21 having such a configuration, it is possible to perform measurement with a small error by using the plurality of stimulus value direct reading type probe units P1 to Pn-1.

  For example, as shown in FIG. 3, such a control unit 29 is functionally a probe determination unit 29a, a measurement probe selection unit 29b, an operation SW detection unit 29c, a measurement (timing) control unit 29d, Data input unit (A / D measurement value reading) 29e, memory control unit (transfer unit, reading) 29f, calculation unit 29g, luminance determination unit 29h, (user) calibration control unit 29i, and display control unit 29j And is configured.

  The probe discriminating unit 29a determines the type (stimulus value direct reading type (P1 to Pn-1) or spectroscopic type (Pn)) of the probe unit P attached to the connector Q with the control units 26 and 26 'of the probe unit P. Determine from communication data. The measurement probe selection unit 29b selects an appropriate probe unit P from the determination result of the luminance determination unit 29h or the like during probe switching measurement described later. The operation SW detection unit 29c detects the state of each unit of the operation unit 32, such as a measurement button, a mode selection switch, and a display changeover switch. The measurement (timing) control unit 29d controls the measurement (timing) by the determined probe unit P. For example, the measurement is started in response to an ON signal of the measurement button (SW). The data input unit 29e performs control (A / D measurement value reading control) for reading the measurement value sent from the probe unit P on the main body unit 22 side. The memory control unit 29f transfers the read measurement values to the memory 31 and appropriately reads the measurement values and calibration values stored in the memory 31.

  The computing unit 29g calculates the difference between the measured value and a predetermined reference value. This difference is used by the user during white balance adjustment. The luminance determination unit 29h compares the luminance of the light source M to be measured with a threshold when performing probe switching measurement as described above. When the calibration mode is executed, the calibration control unit 29i calculates the calibration coefficients AX, AY, and AZ of the stimulus value direct reading type probe units P1 to Pn-1 using the measurement values of the spectroscopic type probe unit Pn. And stored in the memory 33. The display control unit 29j performs control for displaying the measurement calculation value, the measurement mode, and the state of the apparatus (measurement, standby, etc.) on the display unit 30.

  FIG. 4 is a flowchart for explaining a measurement operation and a calibration operation by the control unit shown in FIG. In FIG. 4, when the power of the main body 22 is turned on, step S1 is executed, and the probe discriminating unit 29a discriminates the type of the probe unit P attached to the connector Q, and the stimulus value direct reading type probe unit P1. When Pn-1 is not attached, Step S2 is executed to determine whether or not the spectroscopic probe part Pn is attached, and when no probe part P is attached, the step is performed. Returning to S1, it waits, and when only the spectroscopic probe unit Pn is attached in step S2, step S3 is executed, and the measurement mode of only the spectroscopic probe unit Pn is set. On the other hand, when the stimulus value direct-reading type probe parts P1 to Pn-1 are attached in step S1, it is further determined whether or not the spectroscopic type probe part Pn is attached in step S12. If not, that is, if only the stimulus value direct reading type probe units P1 to Pn-1 are mounted, step S13 is executed, and the measurement mode of only the stimulus value direct reading type probe units P1 to Pn-1 is set. .

  In the measurement mode with the spectroscopic probe unit Pn, the operation SW detection unit 29c waits until the operation of the measurement button (SW) of the operation unit 32 is detected in step S4, and when operated, the measurement is performed in step S5. The (timing) control unit 29d causes the determined spectroscopic probe unit Pn to perform measurement, and the measurement result (spectral measurement value S ′ (λ)) is sent from the data input unit 29e to the memory control unit (transfer unit, reading) 29f. In step S7, the display control unit 29j causes the display unit 30 to display the information, and in step S8, the data is stored in the memory 31. In step S9, when a plurality of spectroscopic probe parts Pn are mounted, it is determined whether or not measurement has been performed for all of them. If unmeasured probe parts P remain, the process proceeds to step S4. When the measurement is returned and repeated, and all the measurements are completed, it is determined in step S10 whether or not the power switch is cut off. When the power is turned off, the measurement operation is finished. Returning to step S1, the measurement operation is continued. Even in the measurement mode with the stimulus value direct reading type probe units P1 to Pn-1, the processes of steps S14 to S19 similar to steps S4 to S9 are performed, and then step S10 is executed.

  On the other hand, in the process from step S1 to step S12, when both the stimulus value direct reading type probe units P1 to Pn-1 and the spectroscopic type probe unit Pn are mounted, step S21 is executed. Then, the operation SW detection unit 29c determines whether or not the calibration mode is selected with the mode selection switch of the operation unit 32, and if it is selected, step S22 is executed. In step S22, first, the measurement (timing) control unit 29d causes the stimulus value direct reading type probe units P1 to Pn-1 to perform measurement, fetches the measurement results, and then in step S23, the spectroscopic type probe unit Pn. Make a measurement and capture the measurement results. In step S24, the calibration control unit 29i calculates the calibration values of the stimulus value direct-reading probe units P1 to Pn-1 as described above using the measurement values of the two types of probe units P1 to Pn-1; Pn. In step S25, the probe values P1 to Pn-1 of the stimulus value direct reading type are stored. In step S26, when a plurality of stimulus value direct-reading type probe parts P1 to Pn-1 are mounted, it is determined whether or not the calibration coefficients AX, AY, AZ have been obtained for all of them, and the uncalibrated probe part If there is any remaining, the process returns to step S22 to repeat the measurement (in this case, the measurement step S23 relating to the spectroscopic probe unit Pn may be passed). S27 is executed.

  In step S27, the operation SW detection unit 29c waits until the measurement button (SW) of the operation unit 32 is operated, and when operated, in step S28, the measurement (timing) control unit 29d first reads the stimulus value directly. The preliminary measurement is performed in any one of the probe units P1 to Pn-1, and the calculation unit 29g calculates the luminance Lv from the measurement result in step S29. In step S30, the luminance determination unit 29h When the luminance Lv is compared with the threshold value, if it is greater than or equal to the threshold value, the process proceeds to step S3 and the spectroscopic probe unit Pn performs measurement. If it is less than the threshold value, the process proceeds to step S13 and the stimulus value direct reading type probe. Measurement is performed at the parts P1 to Pn-1.

  FIG. 5 is a graph for explaining the spectral response of the stimulus value direct reading type measuring device and the spectroscopic type measuring device. The horizontal axis in FIG. 5 is luminance, and the vertical axis is error. FIG. 6 is a block diagram for explaining the switching measurement operation of the probe unit. FIG. 7 is a graph showing a luminance change with respect to an input signal level change for explaining the white balance adjustment of the display in the colorimeter having the configuration shown in FIG. 6, and shows a state before the adjustment. FIG. 8 is a diagram showing a display display screen and probe arrangement during the adjustment of the white balance adjustment. FIG. 9 is a graph showing a luminance change with respect to an input signal level change for explaining the white balance adjustment, and shows a state during the adjustment. FIG. 10 is a graph showing a luminance change with respect to an input signal level change for explaining the white balance adjustment, and shows a state after the adjustment. Each of the horizontal axes in FIGS. 7, 9, and 10 represents an input signal, and each of the vertical axes represents luminance.

  Here, as shown in FIG. 19 and FIG. 2, the photometric device can be classified into a stimulus value direct reading type measuring device and a spectroscopic type measuring device based on the difference in the optical configuration of the optical sensor units 3 and 23. it can. In general, the former has a simple optical system, little energy loss, and high sensitivity as shown by reference numeral α1 in FIG. 5, but has a large measurement error and a large measurement value difference between devices. On the other hand, the latter has a small measurement error and a small measurement value difference between devices as shown by reference numeral α2 in FIG. 5, but the sensitivity is low because the optical system is complicated. In addition, when measuring a light source with high luminance, sufficient repeatability is ensured even in a spectroscopic measuring instrument with low optical sensitivity, but the repetition error becomes a problem as the luminance of the light source decreases. However, even in the luminance range where the repetition error is large in the spectroscopic measurement device with low optical sensitivity, the stimulus value direct reading type measurement device has high optical sensitivity, so that it is possible to secure a small repetition error that does not cause a problem in practice. There is a case.

  For this reason, for example, as shown in FIG. 6, the spectroscopic probe unit Pn and the stimulus value direct reading type probe unit P <b> 1 are arranged close to each other (with respect to a region having the same luminance and chromaticity on the measured light source M The colorimeter 21 may be configured so that both probes P1 and Pn are installed. In such a colorimeter 21, a predetermined luminance threshold value Lc is set as shown in FIG. 5, and this luminance threshold value Lc is stored in the memory 31 of the main body unit 22. Measurement is performed by the probe unit Pn, and when it is less than the threshold value Lc, measurement is performed by the stimulus value direct reading type probe unit P1. By properly using the spectroscopic type probe unit Pn and the stimulus value direct reading type probe unit P1, the colorimeter 21 having the configuration shown in FIG. 6 has the performance of the stimulus value direct reading type and the spectroscopic type. In view of this, the measurement that minimizes the error in the entire luminance range can be realized with one apparatus. For example, as shown in FIG. 5, the luminance threshold value Lc is set to the luminance value at the intersection of the error characteristic α1 in the stimulus value direct reading type probe unit P1 and the error characteristic α2 in the spectral type probe unit Pn.

  Hereinafter, as shown in FIG. 6, the white balance adjustment of the display will be described as a measurement example in which the spectroscopic probe unit Pn and the stimulus value direct reading probe unit P1 are used in combination. White balance adjustment means that when the same signal is input for Red, Green, and Blue, the relationship between the input signal and the amount of light emission is adjusted on the display side so that the chromaticity is constant from high luminance to low luminance. say. The adjustment parameters include an offset adjustment parameter for offset adjustment that uniformly adds the light emission amount to the input signal, and a drive adjustment parameter for drive adjustment that increases or decreases the ratio (slope) of the light emission amount to the input signal.

  For example, before the adjustment, it is assumed that the relationship between the input signals of Red, Green, and Blue and the light emission amount are different as shown in FIG. An adjustment process using both the offset adjustment and the drive adjustment for such a display is as follows. Before adjusting the first display, such as before starting work, first, a high-intensity white pattern is displayed on the entire screen, and measurements are performed with both probe units P1 and Pn arranged close together, and each measured value is saved. Is done. Using both measured values, calibration coefficients AX, AY, and AZ for the stimulus value direct reading type probe unit P1 are calculated and stored in accordance with the equations (3-1) to (3-3). Thereafter, until the end of the work, the measured values X1, Y1, Z1 of the stimulus value direct reading type probe unit P1 are multiplied by the calibration coefficients AX, AY, AZ, and the equations (4-1) to (4) -3), the measured values X2, Y2, Z2 are calculated.

  Next, as shown in FIG. 8, a relatively small input signal L1 is given to the screen on the side of the stimulus value direct reading type probe unit P1, and from the output of the stimulus value direct reading type probe unit P1, as shown in FIG. In addition, the offset adjustment parameter value is set so that the luminances of Red, Green, and Blue are equal to each other by the input signal L1, and the offset adjustment is performed. Subsequently, as shown in FIG. 8, a relatively large input signal L2 is given to the screen on the spectroscopic probe unit Pn side, and the red, green, and blue luminances are equal to each other even with this input signal L2. Drive adjustment parameters are set and drive adjustments are made. As a result, as shown in FIG. 10, if the input signals are equal in the entire range from high luminance to low luminance, the chromaticity can be adjusted to be constant. Therefore, for such adjustment, as described above, measurement with little error is required from the low luminance region to the high luminance region. In this way, white balance adjustment is executed with the best accuracy.

  Next, a case where the crosstalk amount of the display is measured will be described. Crosstalk refers to a phenomenon in which, when only a certain area of the display emits light, the non-light emitting area emits light due to the influence. The amount of crosstalk is defined, for example, by the ratio of the light emitting area to the non-light emitting area. As shown in FIG. 11, the display pattern in the case of measuring crosstalk is generally a light emitting area at the center and a non-light emitting area at the other of the display areas. Crosstalk is likely to occur in the left-right direction and the up-down direction of the light-emitting area due to the display electrodes and the like.

  For this reason, as shown in FIG. 11, the spectroscopic probe part Pn is arranged at the center, and the stimulus value direct reading type probe parts P1 to P4 are arranged at the other four points. Next, a high-intensity white pattern is displayed on the entire screen, measurements are performed with all the probe portions P1 to P4, Pn, and the measured values are stored. Using the measurement values of the probe parts P1 to P4 as the measurement values of the probe part Pn, the calibration coefficients AX for the stimulus value direct reading type probe parts P1 to P4 according to the above formulas (3-1) to (3-3), AY and AZ are calculated and stored. Thereafter, the measured values X1, Y1, and Z1 of the probe units P1 to P4 of the stimulus value direct reading type are multiplied by the calibration coefficients AX, AY, and AZ, and follow the above equations (4-1) to (4-3). The measured values are X2, Y2, and Z2. Thereafter, as shown in FIG. 11, only the central portion of the screen is displayed in white, and the ratio between the measured value at the central portion by the spectroscopic probe portion Pn and the measured values at the other four points by the stimulus value direct reading type probe portions P1 to P4 is as follows. The calculated result is used as a crosstalk value.

  With this configuration, the high luminance region is measured by the spectroscopic probe unit Pn, and the low luminance region is measured by the stimulus value direct reading type probe units P1 to P4. Is measured. Further, since the probe parts P1 to P4 and Pn need only be installed once, the movement of the probe part that occurs when the probe part has only one probe part is eliminated. It becomes possible to measure at high speed and simply.

  As described above, the colorimeter 21 according to the first embodiment includes a plurality of probe parts P1 to Pn and is configured to include the main body part 22 common to the probe parts P1 to Pn, and measures multiple points simultaneously. Among the plurality of probe parts P1 to Pn, many (P1 to Pn-1) are configured by a stimulus value direct reading type, and a part (Pn) is configured by a spectroscopic type. Is done. Therefore, the main body 22 automatically calibrates using the highly accurate measurement result of the spectroscopic type probe unit Pn for the calibration of many stimulus value direct reading type probe units P1 to Pn-1. The colorimeter 21 of the first embodiment can be calibrated very easily without using an external device such as a personal computer and without requiring user work such as transfer of measurement data. . In addition, a predetermined luminance threshold value Lc is set in the main body unit 22, and when the main body unit 22 is equal to or higher than the luminance threshold value Lc, measurement is performed with the high-precision spectral probe unit Pn, and the luminance threshold value is determined. If it is less than Lc, the optical system is simple, the energy loss is small, and the sensitive stimulation value direct-reading type probe units P1 to Pn-1 can be used properly.

  In the colorimeter 21 of the first embodiment, each of the probe units P1 to Pn-1; Pn includes an optical sensor unit 3 and 23 and an amplifier 4 that amplifies the output from the optical sensor unit 3 and 23. 24, analog / digital converters 25 ′ and 25 for analog / digital conversion of the outputs from the amplifiers 4 and 24, and outputs from the analog / digital converters 25 ′ and 25 to a predetermined signal format. A control unit 26 ', 26 for performing a measurement operation in response to a measurement instruction from the main body unit 22, a memory 33 for storing calibration coefficients AX, AY, AZ; An interface unit 27 interposed between the control units 26 ′ and 26 and the main body unit 22 is provided. For this reason, even if the measurement method differs between the stimulus value direct reading type and the spectroscopic type, the signal format is defined, and a signal indicating the type of the sensor unit 3 or 23 is appropriately transmitted to the main body unit 22 when the power is turned on. Thus, any type of probe parts P1 to Pn-1; Pn can be arbitrarily attached to and detached from the connector Q of the main body part 22. Therefore, as a basic configuration, as described above, many (P1 to Pn-1) are set to the stimulus value direct reading type and a part thereof (Pn) is set to the spectral type, or all are set to the stimulus value direct reading type. Arbitrary combinations are possible in which all are spectroscopic types, most are spectroscopic types, and some are direct stimulus value reading types. Therefore, when calibration is completed, all are set to the stimulus value direct reading type, all are set to the spectral value type when the luminance is high, and all are set to the stimulus value direct reading type when the luminance is low. Measurements can be made.

(Embodiment 2)
FIG. 12 is a block diagram showing an electrical configuration of the colorimeter 51 according to the second embodiment of the present invention. FIG. 13 is a graph for explaining a method of configuring a sensor having a desired spectral response by combining a plurality of sensors having different spectral responses in the second embodiment. FIG. 14 is a graph for explaining a method of configuring a sensor having a desired spectral response by combining a plurality of sensors having different spectral responses in the second embodiment. In FIG. 12, the colorimeter 51 is similar to the colorimeter 21 described above, and corresponding portions are denoted by the same reference numerals, and description thereof is omitted. In the colorimeter 21 described above, a plurality of probe portions P are mounted on one main body portion 22, whereas it should be noted that in the colorimeter 51, a plurality of probe portions P1 and P2 are provided. ,..., Pn are individually connected to the corresponding main body portions S1, S2,..., Sn to form one unit, and the plurality of units are connected to each other, One is a master machine and the rest is a slave machine to perform calibration and measurement. The master unit is preferably a main body Sn to which a spectroscopic probe unit Pn is connected. In the calibration mode, the main body Sn sends the measurement results to the remaining main bodies S1, S2,..., Sn-1. To deliver. In such a configuration, if the network configuration between the main body portions S is possible, the main body portions S can be added as necessary, and the number of probe portions P can be expanded.

  In the above description, the optical sensor unit 23 of the spectroscopic probe unit Pn has a so-called spectrocolorimeter configuration in which the CCD linear sensor 23f is used for the diffraction grating 23d as shown in FIG. Structurally, it has a configuration similar to the optical sensor unit 3 of the stimulus value direct reading type probe units P1 to Pn-1 shown in FIG. 19, and has a photometric function having four or more types of spectral responsivity, that is, four or more. The filter unit and the corresponding sensor unit are included, and the output of each sensor, such as adding the partial outputs of the sensors, is not output as it is, but the one that needs to be calculated and output is included.

  For example, an example of realizing a measurement having a spectral response equal to one color matching function, for example, y (λ), using a sensor having three spectral responses will be described with reference to FIGS. 13 and 14. Assume that the measuring device has three sensors each having a spectral response indicated by reference numerals β1 to β3 in FIG. Further, it is assumed that the color matching function y (λ) is equal to the spectral response indicated by the reference symbol β0. Here, when a simple sum of the three sensor outputs (that is, the amplification factor of each sensor is 1) is taken out as a signal, the spectral responsivity indicated by reference symbol β4 which is the sum of the spectral responsivities indicated by the reference symbols β1 to β3. It becomes. In this case, the color matching function y (λ) indicated by the reference symbol β0 does not match.

  Therefore, when the three spectral responsivenesses indicated by the reference symbols β1 to β3 are respectively multiplied by 0.3, 1.0, and 1.7, the spectral responsivenesses are represented by reference symbols β1 ′ to β3 ′ in FIG. As shown by reference numeral β4 ′, it is equal to the color matching function y (λ) indicated by β0. In this way, a sensor having a desired spectral response can be configured by multiplying a plurality of sensor outputs by an arbitrary coefficient and extracting a signal sum. In general, it is difficult to make the spectral response created by adding together the outputs of multiple sensors exactly match the default color matching function, but when compared with the spectral response of a stimulus value direct-reading type instrument, It is possible to form a spectral response with a smaller error.

(Embodiment 3)
15 and 16 are block diagrams showing the electrical configuration of the colorimeters 21a and 51a according to the third embodiment of the present invention. These colorimeters 21a and 51a are similar to the above-described colorimeters 21 and 51, respectively, and corresponding portions are denoted by the same reference numerals and description thereof is omitted. It should be noted that in these colorimeters 21a and 51a, timing signals lines L1a and L2a to Lna connected in common to the probe parts are provided in the cables L1 to Ln, respectively, and the main body part 22a. Measurement start and end timing signals are transmitted from the interface sections 28a and 52a of S1a to Sna to the interface sections 27a of the probe sections P1a to Pna.

  Therefore, when the measurement start and end timings are controlled by software from the control unit 29, it is difficult to perform the measurement by completely synchronizing the probe units P1a to Pna, whereas this dedicated timing signal is used. By obtaining synchronization by hardware using the lines L1a and L2a to Lna, it is possible to perform measurement while completely synchronizing the probe units P1a to Pna.

(Embodiment 4)
FIG. 17 is a flowchart for explaining the calibration operation of the colorimeter according to the fourth embodiment of the present invention. In the present embodiment, the configuration of the colorimeter 21 described above can be used, and the operation of the control unit 29 of the main body unit 22 is different from that shown in FIG. This FIG. 17 calibrates between arbitrary probe parts, and also includes the case where calibration is performed between the stimulus value direct reading type probe parts P1 to Pn-1. However, the spectroscopic probe unit Pn is not calibrated by the measurement results of the stimulus value direct reading type probe units P1 to Pn-1.

  In FIG. 17, it is determined whether or not a plurality of probe parts P are attached in step S51. If they are not attached, a normal measurement mode is executed, and a plurality of probe parts P are attached. In step S52, it is determined whether or not the inter-probe calibration mode is selected. If not, the normal measurement mode is executed. If it is selected, the calibration operation after step S53 is performed. Executed. The normal measurement mode is the process after step S1 in FIG. 4, and the type of the probe part P mounted at S1, S2, S12 is determined, and the process proceeds to the measurement process after S3 or S13. , S12, after both probe portions P1 to Pn-1; Pn are detected, the process proceeds directly to the measurement in step S27 without moving to the calibration mode in steps S22 to S26.

  In step S53, measurement is performed by the probe unit P on the reference (standard) side, and measurement values (spectral radiance S ′ (λ) and measurement values X, Y, and Z) are acquired from the control units 26 and 26 ′. Is done. In step S54, measurement is performed by the probe unit on the calibration side, and analog / digital conversion values (measurement values X1, Y1, Z1) are obtained as they are from the control unit 26 '. Subsequently, in step S55, the measured values X ′, Y ′, Z ′ obtained by inversely transforming the measured values X, Y, Z from the equations (2-1) to (2-3), and the analog / The calibration coefficients (AX, AY, AZ) are obtained from the digital conversion values (measured values X1, Y1, Z1). The calibration coefficients (AX, AY, AZ) are set in the memory 33 in step S56, and then the normal measurement mode is entered.

  In this way, calibration can be performed between arbitrary probe parts.

  In the present invention, the output of the spectroscopic probe unit and the stimulus value direct reading type probe unit may be digitally converted by an analog / digital device installed on the main body side.

  The present specification discloses various aspects of the technology as described above, and the main technologies are summarized below.

  A photometric colorimetric device according to one aspect is a photometric colorimetric device comprising a plurality of probe units and a main body unit common to the plurality of probe units, wherein some of the plurality of probe units are , A spectral first probe unit including a spectral first optical sensor unit, and the remainder is a stimulus value direct reading type second probe unit including a stimulus value direct reading type second optical sensor unit, Each of the first and second probe units includes an interface unit interposed between the main unit and a control unit that performs a measurement operation in response to a measurement instruction from the main unit. Includes a main body control unit that sends the measurement instruction to each of the plurality of probe units via the interface unit. A photometric colorimetric apparatus according to another aspect is a photometric colorimetric apparatus comprising a plurality of probe units and a plurality of main body units individually corresponding to the plurality of probe units. A part of the plurality of probe units is a spectroscopic first probe unit including a spectroscopic first optical sensor unit, and the remainder includes a stimulus value direct reading type second optical sensor unit. A stimulus value direct-reading type second probe unit, wherein each of the first and second probe units receives an interface unit interposed between the corresponding main unit unit and a measurement instruction from the corresponding main unit unit. A control unit that performs a measurement operation in response, and each of the plurality of main body units sends the measurement instruction to the main body interface unit and the corresponding probe unit via the interface unit. Be prepared That.

  The photometric colorimetric device having such a configuration is realized as, for example, a chromaticity meter, a spectrocolorimeter, or the like, and includes a plurality of probe units, each probe unit including a common main body unit, or a plurality of probe units. This is a photometric colorimetric device that is configured to include a probe unit and a main body unit that individually corresponds to and cooperates with each other, and can measure multiple points simultaneously. The plurality of probe units are mainly configured as a spectral type while being mainly configured as a stimulus value direct reading type. In addition to the optical system, the stimulus value direct reading type probe unit includes RGB color filters and a light receiving sensor, and the spectral type probe unit includes a spectrocolorimeter such as a diffraction grating or a CCD line sensor. Besides the configuration, it has a photometric function having four or more types of spectral responsivity, that is, it has four or more color filters and sensors, and cannot output the output of each sensor as it is, Including those that need to be processed and output.

  As described above, the spectroscopic probe part is included in a part of the plurality of probe parts, so that the main body part uses the highly accurate measurement result of the spectroscopic type for the calibration of the stimulus value direct reading type probe part. Can be calibrated easily. Further, the main body unit sets a predetermined luminance threshold value. When the threshold value is equal to or higher than the threshold value, measurement is performed with the high-precision spectroscopic probe unit. It can be used properly, such as measuring with a highly sensitive stimulus value direct-reading type probe section with little loss.

  According to another aspect, in each of the above photometric colorimetric devices, each of the probe units has a signal converter for analog / digital conversion of an output of the optical sensor unit, and an output from the signal converter is determined in advance. A control unit that converts the signal into a signal format and outputs the signal to the main unit, and performs a measurement operation in response to a measurement instruction from the main unit; and an interface unit interposed between the control unit and the main unit. It is configured with.

  According to this configuration, even if the measurement method differs between the stimulus value direct reading type and the spectroscopic type, any type of probe unit can be arbitrarily connected to the connector of the main unit by defining the signal format. As described above, the basic configuration is that most of them are stimulus value direct reading type and some are spectroscopic type, all are stimulus value direct reading type and spectroscopic type, and many are spectroscopic type and some are spectroscopic type. Arbitrary combinations such as direct reading of stimulus values are possible.

  Therefore, the photometric colorimetric apparatus having such a configuration is assumed to be all of the stimulus value direct-reading type when the calibration is completed, or all of the spectral value type when the luminance is high, and all of the stimulus value direct-reading type when the luminance is low. In addition, various measurements can be performed.

  According to another aspect, in the above-described photometric colorimetric device, each control unit in each of the first and second probe units sends an identification signal indicating the type of the optical sensor unit to the corresponding main body unit. The main body control unit detects the type of the optical sensor unit from the identification signal received via the interface unit, and controls the calibration operation or the measurement operation according to the detected type.

  According to this configuration, the main body control unit of the main body unit transmits the identification signal indicating the type of the optical sensor unit to the main body unit in the stimulus value direct reading type and the spectroscopic type. Is automatically recognized, and the measurement operation can be controlled according to the connected probe unit.

  In another aspect, in the above-described photometric colorimetric device, preferably, the main body control unit detects a spectral probe unit from the identification signal, and uses the measured value to directly read the stimulation value. This makes it possible to select a calibration mode for executing the calibration of the probe unit. In another aspect, in the above photometric colorimetric device, preferably, when the main body control unit detects a plurality of stimulus value direct reading type probe units, any one of the stimulus value direct reading type probe units is selected. One measurement value is used to select a calibration mode for performing the remaining calibration. In another aspect, in the above-described photometric colorimetric apparatus, preferably, the main body control unit detects a spectral probe unit from the identification signal and performs measurement using a stimulus value direct reading type probe unit. The mode for switching the measurement by the spectroscopic probe unit according to the photometric colorimetric information of the light to be measured can be selected.

  According to another aspect, in the above-described photometric colorimetric device, the interface unit and the main body interface unit in each of the first and second probe units transmit signals output from the optical sensor unit. Line and a synchronization signal line. According to another aspect, in the photometric colorimetric device described above, the interface unit in each of the first and second probe units and the corresponding main body interface unit output the output signal of the optical sensor unit. The transmission signal line and the synchronization signal line are connected.

  According to these configurations, by obtaining synchronization by hardware using a dedicated synchronization signal line, it is possible to perform measurement while completely synchronizing each probe unit.

  In another aspect, in the photometric colorimetric device described above, a measurement button (SW) for starting measurement is provided in the first and second probe units, and the main body control unit operates the measurement button. Waiting for measurement until is detected.

  According to this configuration, when the measurement button (SW) of the first probe unit or the second probe unit is operated, the main body control unit measures the probe unit for which the measurement button is operated or all the probe units. By sending an instruction, a calibration operation or a measurement operation is performed. As a result, the operator can instruct the start of measurement at the position of the probe unit being operated.

  This application is based on Japanese Patent Application No. 2008-214093 filed on Aug. 22, 2008, the contents of which are included in the present application.

  In order to express the present invention, the present invention has been properly and fully described through the embodiments with reference to the drawings. However, those skilled in the art can easily change and / or improve the above-described embodiments. It should be recognized that this is possible. Therefore, unless the modifications or improvements implemented by those skilled in the art are at a level that departs from the scope of the claims recited in the claims, the modifications or improvements are not covered by the claims. To be construed as inclusive.

  ADVANTAGE OF THE INVENTION According to this invention, the photometric colorimetry apparatus which can mount | wear with a some probe can be provided.

Claims (5)

A photometric colorimetric device comprising a common main body portion in which a plurality of probe portion type is different from the optical sensor is connected detachably,
Wherein the plurality of probe portion is closed and the first probe of the spectral type comprising a first optical sensor unit of the spectral type, and a second probe of the stimulus value direct reading type comprising a second optical sensor unit of the stimulus value direct reading type And
Wherein each of the first and second probe portion, and a probe-side interface portion interposed between said main body portion, have rows measurement operation in response to the measurement instruction from the main body portion, analogue the output signal A control unit that performs digital signal conversion and outputs the converted signal via the probe-side interface unit ,
The main body unit includes a main body control unit that sends the measurement instruction to each of the plurality of probe units via a main body-side interface unit ,
Each control unit of the connected first or second probe unit outputs an identification signal indicating the type of the optical sensor unit to the main body unit,
The main control unit detects the type of the optical sensor unit from the identification signal received via the main body side interface unit, characterized that you control the calibration operation or measurement operation in accordance with the detected type Photometric colorimetric device. The main body control unit enables selection of a calibration mode for performing calibration of the stimulus value direct reading type probe unit using the measured value when the spectroscopic type probe unit is detected from the identification signal. The photometric colorimetric device according to claim 1 . When the main body control unit detects a plurality of stimulus value direct reading type probe units, the main body control unit selects a calibration mode for performing the remaining calibration by using any one measurement value of the stimulus value direct reading type probe unit. The photometric colorimetric device according to claim 1, wherein When the spectroscopic probe unit is detected from the identification signal, the main body control unit performs measurement by the stimulus value direct reading type probe unit and measurement by the spectroscopic type probe unit, photometric colorimetry of the measurement target light photometry colorimetry apparatus according to claim 1, characterized in that the mode switching in selectable according to the information. The probe-side interface unit and the body- side interface unit in each of the first and second probe units are connected via a signal line and a synchronization signal line that transmit an output signal of the optical sensor unit. The photometric colorimetric apparatus according to claim 1, wherein:

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