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WO2016208462A1 - Dispositif de mesure et procédé de fabrication de dispositif de mesure - Google Patents

Dispositif de mesure et procédé de fabrication de dispositif de mesure Download PDF

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Publication number
WO2016208462A1
WO2016208462A1 PCT/JP2016/067712 JP2016067712W WO2016208462A1 WO 2016208462 A1 WO2016208462 A1 WO 2016208462A1 JP 2016067712 W JP2016067712 W JP 2016067712W WO 2016208462 A1 WO2016208462 A1 WO 2016208462A1
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WIPO (PCT)
Prior art keywords
color filter
light
spectral response
light receiving
wavelength
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/067712
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English (en)
Japanese (ja)
Inventor
克敏 ▲鶴▼谷
将人 柏原
豊 門脇
敏夫 丸地
耕平 麻生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Priority to JP2017525247A priority Critical patent/JP6794986B2/ja
Priority to DE112016002826.1T priority patent/DE112016002826T5/de
Publication of WO2016208462A1 publication Critical patent/WO2016208462A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/0271—Housings; Attachments or accessories for photometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/029—Multi-channel photometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/0295—Constructional arrangements for removing other types of optical noise or for performing calibration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
    • G01J1/0425—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using optical fibers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J1/0488—Optical or mechanical part supplementary adjustable parts with spectral filtering
    • G01J1/0492—Optical or mechanical part supplementary adjustable parts with spectral filtering using at least two different filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • G01J3/513—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters having fixed filter-detector pairs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • G01J1/04—Optical or mechanical part supplementary adjustable parts
    • G01J2001/0481—Preset integrating sphere or cavity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J2003/467—Colour computing

Definitions

  • the present invention relates to a measuring instrument and a method for producing the measuring instrument.
  • a color filter is used in order to approximate the relative spectral responsivity indicating the relationship between the spectral distribution of the light beam to be measured and the luminance value to the standard relative luminous sensitivity.
  • a color filter is used to approximate the relative spectral response indicating the relationship between the spectral distribution of the light beam to be measured and the illuminance value to the standard relative luminous sensitivity.
  • a color filter is used in order to approximate the relative spectral response indicating the relationship between the spectral distribution of the light flux to be measured and one stimulus value to one component of the color matching function.
  • measuring instruments such as luminance meters, illuminometers, and color meters are used to approximate the relative spectral response indicating the relationship between the measured spectral distribution of the light flux and the spectral response function.
  • Color filters are used.
  • the color luminance meter described in Patent Document 1 is an example.
  • the relative spectral response of the measuring instrument is affected by the spectral transmittance of the color filter used in the measuring instrument. Therefore, when it is attempted to reduce the deviation of the relative spectral response of the measuring instrument from the spectral response function, an attempt is made to reduce the variation in the spectral transmittance of the color filter used in the measuring instrument. However, when an attempt is made to reduce the variation in spectral transmittance of the color filter, the production cost of the color filter increases and the production cost of the measuring instrument increases. Deviation is also called deviation or deviation.
  • An object of the present invention is to reduce the deviation of the relative spectral response of the measuring instrument from the spectral response function without increasing the production cost of the measuring instrument.
  • the light beam to be measured is branched by a bundle fiber.
  • Each of the plurality of light bundles obtained by the branching is transmitted through the color filter.
  • the relative spectral responsivity realized by each of the plurality of color filters is approximated to the standard relative luminous sensitivity.
  • the light bundle transmitted through each of the plurality of color filters is received by the light receiving sensor.
  • Each of the plurality of light receiving sensors outputs an electrical signal corresponding to the received light bundle.
  • the deriving mechanism derives a measured value corresponding to the spectral distribution of the light beam to be measured from the plurality of obtained electrical signals.
  • color filters are roughly classified into absorption type and interference type.
  • the cause of the variation in the spectral transmittance of the interference type color filter is different from the cause of the variation in the spectral transmittance of the absorption type color filter. Therefore, the cause of the variation in the spectral transmittance of the color filter will be described below for each of the case where the color filter is an absorption type and the case where the color filter is an interference type.
  • spectral transmittance of absorption type color filters When a color filter is an absorption type, a plurality of color filters having different spectral transmittances are overlapped to obtain a color having a required spectral transmittance. A superposed body of filters is obtained. However, the spectral transmittance of the color filter varies. For this reason, there is also variation in the spectral transmittance of the color filter overlapped body.
  • the dispersion of the spectral transmittance of the color filter is mainly caused by the dispersion of materials.
  • the color filter is a glass plate
  • a plurality of glass materials are mixed, the mixture is melted in a melting furnace, and the melt is solidified.
  • the melting furnace may be a large continuous melting furnace or a batch furnace such as 96L or 16L.
  • the composition and the like of the solidified product vary within and between batches. This causes variations in the spectral transmittance of the color filter.
  • the base is dyed with a dye.
  • the color and concentration of the dye within and between batches. This causes variations in the spectral transmittance of the color filter.
  • the variation in the spectral transmittance of the color filter is mainly caused by the variation in the thickness of each of the plurality of films.
  • each of the plurality of films may be a dielectric film or an oxide film.
  • the film forming apparatus may be a vacuum evaporation apparatus or a sputtering apparatus.
  • the film thickness of each of the plurality of films is affected by the position of the glass substrate in the film forming apparatus, and is affected by the film forming rate indicating the relationship between the film forming time and the film thickness. For this reason, the thickness of each of the plurality of films varies from batch to batch. This causes variations in the spectral transmittance of the color filter.
  • Interference-type color filters can reduce the deviation from the spectral response function of the relative spectral response of the measuring instrument compared to the absorption-type color filter. There are advantages such as small change with time. Deviation is also called deviation or deviation.
  • German Industrial Standard DIN 5032-7 for luminance meter is the standard ratio adopted by the International Commission on Illuminance for Relative Spectral Response S ( ⁇ )
  • a deviation f 1 ′ from the visibility V ( ⁇ ) is defined as shown in Expression (1).
  • ⁇ 1 and ⁇ 2 are the lower limit and the upper limit of the visible wavelength region, respectively.
  • German Industrial Standard DIN 5032-7 is when the relative spectral response S ( ⁇ ) of the luminance meter deviates from the standard relative luminous sensitivity V ( ⁇ ) f 1 ′ is less than 2%, less than 3% and less than 6% Are defined as L class, A class, and B class, respectively.
  • the luminance meter is produced.
  • the quality of the luminance meter is managed so that the deviation f 1 ′ of the relative spectral response S ( ⁇ ) of the luminance meter from the standard relative luminous sensitivity V ( ⁇ ) is within the specified range.
  • the Japanese Industrial Standard JIS C-1609-1 for illuminometers similarly defines the deviation f 1 ′ of the relative spectral response S ( ⁇ ) of the illuminometer from the standard relative luminous sensitivity V ( ⁇ ).
  • the relative spectral response realized by the color filter can be approximated to the standard relative luminous sensitivity V ( ⁇ ), but the relative spectral response realized by the color filter completely matches the standard relative luminous sensitivity V ( ⁇ ). It is difficult to make it. For this reason, the relative spectral response realized by the best color filter does not completely match the standard relative luminous sensitivity V ( ⁇ ). The deviation f 1 ′ does not become zero.
  • the graph in FIG. 17 shows the relative spectral response realized by the standard specific luminous efficiency and the best color filter.
  • the relative spectral response realized by the best color filter is approximated to the standard relative luminous sensitivity V ( ⁇ ).
  • the relative spectral response realized by the best color filter does not completely match the standard relative luminous sensitivity V ( ⁇ ).
  • the deviation f 1 ′ of the relative spectral response realized by the best color filter from the standard relative luminous sensitivity V ( ⁇ ) is not 0% but 1.6%.
  • the graph in FIG. 18 shows the relative spectral response realized by the best color filter and the relative spectral response realized by the color filter having a wavelength error ⁇ of ⁇ 0.2 nm.
  • the graph of FIG. 19 shows the relative spectral response realized by the best color filter and the relative spectral response realized by the color filter having a wavelength error ⁇ of ⁇ 1.0 nm.
  • the graph of FIG. 20 shows the relative spectral response realized by the best color filter and the relative spectral response realized by the color filter having a wavelength error ⁇ of ⁇ 2.1 nm.
  • the wavelength error ⁇ of the color filter is a difference obtained by subtracting the centroid wavelength of the relative spectral response realized by the best color filter from the centroid wavelength of the relative spectral response realized by the color filter.
  • the deviation f 1 ′ of the relative spectral response realized by the color filter having the wavelength error ⁇ of ⁇ 0.2 nm from the standard relative luminous sensitivity V ( ⁇ ) is 2.0%. Therefore, when the absolute value of the wavelength error ⁇ of the color filter is less than 0.2 nm, the deviation f 1 ′ of the relative spectral response from the standard relative luminous sensitivity V ( ⁇ ) is less than 2.0%, and the luminance The total grade is L level.
  • the deviation f 1 ′ of the relative spectral response realized by the color filter having the wavelength error ⁇ of ⁇ 1.0 nm from the standard relative luminous sensitivity V ( ⁇ ) is 3.0%.
  • the absolute value of the wavelength error ⁇ of the color filter is less than 1.0 nm
  • the deviation f 1 ′ of the relative spectral response from the standard relative luminous sensitivity V ( ⁇ ) is less than 3.0%
  • the luminance The total grade is A grade.
  • the deviation f 1 ′ of the relative spectral response realized by the color filter having the wavelength error ⁇ of ⁇ 2.1 nm from the standard relative luminous sensitivity V ( ⁇ ) is 6.4%.
  • the absolute value of the wavelength error ⁇ of the color filter is 2.1 nm or more
  • the deviation f 1 ′ of the relative spectral responsivity from the standard relative luminous sensitivity V ( ⁇ ) is 6.4% or more
  • the luminance The total grade is not even B grade.
  • the wavelength variation of the spectral transmittance of the interference type color filter is approximately ⁇ 3 nm. Since the variation in wavelength of the spectral transmittance of the color filter is almost the same as the variation in wavelength of the relative spectral response realized by the color filter, the variation in the wavelength of the spectral transmittance of the color filter is large. Is approximately ⁇ 3 nm, the variation in wavelength of the relative spectral response realized by the color filter is also approximately ⁇ 3 nm. However, when the magnitude of the wavelength variation of the relative spectral response realized by the color filter is ⁇ 3 nm, the luminance meter is not even grade B.
  • the luminance meter grade is L
  • selection also increases the production cost of the color filter.
  • the yield rate is about 20%, which significantly increases the production cost of the color filter.
  • the first embodiment relates to a luminance meter.
  • a luminance meter is a measuring instrument that measures the luminance of a light source.
  • FIG. 1 shows the luminance meter of the first embodiment.
  • the luminance meter 1000 includes an objective lens 1010, a field stop 1011, a bundle fiber 1012, a color filter group 1013, a light receiving sensor group 1014, a derivation mechanism 1015, a mirror 1016, and a viewfinder system 1017.
  • the color filter group 1013 includes a first color filter 1030 and a second color filter 1031.
  • the light receiving sensor group 1014 includes a first light receiving sensor 1040 and a second light receiving sensor 1041.
  • the derivation mechanism 1015 includes an amplification mechanism 1050, a conversion mechanism 1051, and an arithmetic mechanism 1052.
  • the amplification mechanism 1050 includes a first amplification circuit 1060 and a second amplification circuit 1061.
  • the conversion mechanism 1051 includes a first conversion circuit 1070 and a second conversion circuit 1071.
  • the beam bundle 1080 to be measured is converged by the objective lens 1010.
  • the objective optical system including the objective lens 1010 may be replaced with another type of objective optical system.
  • the peripheral light bundle 1100 of the converged light bundle 1080 is limited by the field stop 1011.
  • the restricted light bundle 1100 is incident on the incident end 1110 of the bundle fiber 1012.
  • the incident light bundle 1100 is branched by the bundle fiber 1012.
  • the first light bundle 1120 and the second light bundle 1121 obtained by the branching are emitted from the first emission end 1130 and the second emission end 1131 of the bundle fiber 1012 respectively.
  • the branch mechanism composed of the bundle fiber 1012 may be replaced with another type of branch mechanism.
  • the emitted first light bundle 1120 and second light bundle 1121 are transmitted through the first color filter 1030 and the second color filter 1031, respectively.
  • the transmitted first beam bundle 1120 and second beam bundle 1121 are received by the first light receiving sensor 1040 and the second light receiving sensor 1041, respectively.
  • the first light receiving sensor 1040 and the second light receiving sensor 1041 output a first electric signal and a second electric signal corresponding to the received first light bundle 1120 and second light bundle 1121, respectively.
  • the deriving mechanism 1015 derives the luminance value LV corresponding to the spectral distribution of the light beam 1080 to be measured from the first electric signal and the second electric signal.
  • the first electric signal and the second electric signal are amplified by the first amplifier circuit 1060 and the second amplifier circuit 1061, respectively.
  • the amplification factors when the first amplification circuit 1060 and the second amplification circuit 1061 amplify the first electric signal and the second electric signal are respectively referred to as the first amplification factor G1 and the second amplification factor.
  • the rate is G2.
  • the first amplifier circuit 1060 and the second amplifier circuit 1061 may be omitted.
  • the amplified first electric signal and second electric signal are converted from analog to digital into a first signal value S1 and a second signal value S2 by a first conversion circuit 1070 and a second conversion circuit 1071, respectively. Is done.
  • the calculation mechanism 1052 is a microcomputer or the like, and calculates a luminance value LV from the first signal value S1 and the second signal value S2.
  • Each of the relative spectral response S1 ( ⁇ ) realized by the first color filter 1030 and the relative spectral response S2 ( ⁇ ) realized by the second color filter 1031 has a standard relative luminous sensitivity V ( ⁇ ). Can be approximated.
  • the relative spectral response S1 ( ⁇ ) indicates the relationship between the measured spectral distribution of the light beam 1080 and the first signal value S1.
  • the relative spectral response S2 ( ⁇ ) indicates the relationship between the measured spectral distribution of the light beam 1080 and the second signal value S2. Therefore, the relative spectral response S1 ( ⁇ ) and the relative spectral response S2 ( ⁇ ) are mainly affected by the spectral transmittances of the first color filter 1030 and the second color filter 1031 respectively. It is also affected by the spectral transmittance of 1010 and the spectral transmittance of the bundle fiber 1012, and is also affected by the spectral sensitivity of the light receiving sensor 1040 and the light receiving sensor 1041, respectively.
  • the number of branches of the bundle fiber 1012 may be increased.
  • the number of branches of the bundle fiber 1012 is increased, according to the number of branches of the bundle fiber 1012, the number of beam bundles, the number of emission ends, the number of color filters, the number of light receiving sensors, the number of amplifier circuits, the number of conversion circuits The number, the number of electrical signals, the number of signal values, etc. are increased.
  • the central light bundle 1101 of the converged light bundle 1080 is reflected by the mirror 1016.
  • the reflected light bundle 1101 is guided to the finder system 1017.
  • the viewfinder system 1017 generates a viewfinder image from the guided light beam 1101.
  • the mirror 1016 and the viewfinder system 1017 may be omitted.
  • the wavelength error ⁇ of the color filter is an index expressing the wavelength shift from the relative spectral response realized by the best color filter of the relative spectral response realized by the color filter.
  • An index other than the wavelength error ⁇ of the color filter may be used.
  • the centroid wavelength may be changed to another type of characteristic wavelength.
  • the center-of-gravity wavelength may be changed to a peak wavelength, a half-value wavelength, or the like.
  • a relative spectral response other than the relative spectral response of the best color filter may be used as a reference.
  • the relative spectral response that matches the standard relative luminous sensitivity may be used as a reference.
  • Each of the first color filter 1030 and the second color filter 1031 is an interference type. For this reason, the deviation from the relative spectral response realized by the best color filter of the relative spectral response realized by each of the first color filter 1030 and the second color filter 1031 is expressed by a wavelength error. . Even when each of the first color filter 1030 and the second color filter 1031 is not an interference type, the color filter having the best relative spectral response realized by each of the first color filter 1030 and the second color filter 1031. In some cases, the deviation from the relative spectral responsivity realized by is represented by a wavelength error.
  • each of the first color filter 1030 and the second color filter 1031 is not an interference type, from the standard relative luminous sensitivity V ( ⁇ ) of the relative spectral response S0 ( ⁇ ) employed in the luminance meter 1000.
  • a technique for suppressing the deviation f 1 ′ is employed.
  • the wavelength error ⁇ 1 of the first color filter 1030 is negative, and the wavelength error ⁇ 2 of the second color filter 1031 is positive.
  • the influence ⁇ S2 ( ⁇ ) on the spectral response S0 ( ⁇ ) can be canceled out.
  • the signal value is such that the influence ⁇ S1 ( ⁇ ) and the influence ⁇ S2 ( ⁇ ), which are a set of the two color filters 1030 and 1031 of the influence ⁇ Si ( ⁇ ) of the wavelength error ⁇ i of the i-th color filter cancel each other.
  • the coefficient Ci multiplied by Si is made different between the two signal values S1 and S2.
  • the calculation mechanism 1052 performs weighting that makes the contribution of the i-th electrical signal to the luminance value LV different between the two electrical signals. .
  • each of the first coefficient C1 and the second coefficient C2 is a weighting coefficient
  • the sum S0 is a weighting of the first signal value S1 and the second signal value S2.
  • the first amplification factor G1 and the second amplification factor G2 are the same.
  • the wavelength error ⁇ i of the i-th color filter is multiplied by the weighting coefficient Ci multiplied by the signal value Si obtained by converting the electric signal output from the light receiving sensor that receives the light bundle transmitted through the i-th color filter.
  • the product C1 ⁇ ⁇ 1 and the product C2 ⁇ ⁇ 2 desirably cancel out completely.
  • the sum C1 ⁇ ⁇ 1 + C2 ⁇ ⁇ 2 of the product C1 ⁇ ⁇ 1 and the product C2 ⁇ ⁇ 2 becomes zero.
  • the effect of reducing the deviation f 1 ′ can be obtained.
  • the influence ⁇ S1 ( ⁇ ) and the influence ⁇ S2 ( ⁇ ) cancel each other, and the relative spectral response S0 ( ⁇ ) approaches the relative spectral response realized by the best color filter.
  • the first color filter 1030 and the second color filter 1031 that can realize only the relative spectral responsivities S1 ( ⁇ ) and S2 ( ⁇ ) in which the deviation f 1 ′ does not satisfy the standard, respectively, and the deviation f 1 ′.
  • the luminance meter 1000 having a relative spectral response S0 ( ⁇ ) satisfying the standard can be realized. Therefore, the deviation f 1 ′ can be reduced without increasing the production cost of the luminance meter 1000.
  • the graph of FIG. 2 shows the relative spectral response and wavelength realized by a color filter having a wavelength error ⁇ of ⁇ 2.1 nm.
  • the relative spectral responsivity realized by the color filter having an error ⁇ of +1.7 nm is shown.
  • the graph of FIG. 3 shows the standard relative luminous sensitivity and the relative spectral response of the luminance meter.
  • the wavelength error ⁇ 1 of the first color filter 1030 is ⁇ 2.1 nm, and the relative spectral response S1 ( ⁇ ) realized by the first color filter 1030 is the relative spectral response S1 ( ⁇ ) shown in FIG.
  • the wavelength error ⁇ 2 of the second color filter 1031 is +1.7 nm, and the relative spectral response S2 ( ⁇ ) realized by the second color filter 1031 is the relative spectral response S2 ( ⁇ ) shown in FIG.
  • the first coefficient C1 is set to 0.8
  • the second coefficient C2 is set to 1.0.
  • the product C1 ⁇ ⁇ 1 becomes ⁇ 1.7
  • the product C2 ⁇ ⁇ 2 becomes 1.7
  • the product C1 ⁇ ⁇ 1 and the product C2 ⁇ ⁇ 2 cancel each other.
  • the relative spectral response S0 ( ⁇ ) of the luminance meter 1000 becomes the relative spectral response S0 ( ⁇ ) shown in FIG. 3, and the standard relative luminous sensitivity of the relative spectral response S0 ( ⁇ ) of the luminance meter 1000 is obtained.
  • the deviation f 1 ′ from V ( ⁇ ) becomes 1.4%
  • the luminance meter 1000 becomes L level. That is, the luminance meter 1000 that can achieve the L class can be produced using the first color filter 1030 and the second color filter 1031 that should not achieve the L class.
  • FIG. 4 shows a method for producing a luminance meter.
  • color filters that are candidates for the first color filter 1030 and the second color filter 1031 are prepared in step 1140.
  • step 1141 the wavelength error of each of the prepared color filters is measured.
  • the wavelength error of each of the prepared color filters is measured through a step of measuring the spectral transmittance of each of the prepared color filters with a spectrophotometer.
  • the centroid wavelength is in the wavelength range of 380-780 nm.
  • Spectral reflectance may be measured instead of spectral transmittance.
  • the wavelength range of 380-780 nm may be replaced with another wavelength range.
  • the histogram of FIG. 5 shows the distribution of wavelength errors.
  • a color filter having a wavelength error suitable for the first color filter 1030 and a color filter having a wavelength error suitable for the second color filter 1031 are selected from the prepared color filters.
  • the prepared color filters are classified into groups A1 and A2.
  • a wavelength error range that is negative and a wavelength error range that is positive are respectively defined.
  • Class ranges 1165 and 1166 in the histogram of FIG. 5 belong to the ranges of wavelength errors defined in groups A1 and A2, respectively.
  • each of the prepared color filters belongs to a group in which a range of wavelength errors including the wavelength errors of each of the prepared color filters is defined.
  • the color filters used as the first color filter 1030 and the second color filter 1031 are selected from the color filters belonging to the groups A1 and A2, respectively.
  • step 1143 the luminance meter 1000 is assembled using the two selected color filters as the first color filter 1030 and the second color filter 1031.
  • the objective lens 1010 forms an image of the beam bundle 1080 to be measured at the imaging position 1150.
  • An opening 1160 formed in the field stop 1011 is disposed at the imaging position 1150.
  • the incident end 1110 is arranged away from the opening 1160.
  • the incident end 1110 is arranged away from the imaging position 1150, and the light beam 1100 enters the incident end 1110 in a state where it is not focused.
  • the diameter of the incident end 1110 is larger than that when the light beam 1100 is incident on the incident end 1110 with the light beam 1100 being in focus. Must.
  • the bundle fiber 1012 has a branch and has a first emission end 1130 and a second emission end 1131.
  • the diameters of the first exit end 1130 and the second exit end 1131 are smaller than the diameter of the entrance end 1110. Thereby, even when the diameter of the incident end 1110 is increased, the entire first light beam 1120 and second light beam 1121 emitted from the first emission end 1130 and the second emission end 1131 are
  • the first color filter 1030 and the second color filter 1031 can be transmitted through the first color filter 1030 and the second color filter 1031, respectively.
  • the sensor 1040 and the second light receiving sensor 1041 can receive light.
  • the influence ⁇ S1 of the wavelength error ⁇ 1 of the first color filter 1030 on the relative spectral response S0 ( ⁇ ) of the luminance meter 1000 ⁇ ) and the wavelength error ⁇ 2 of the second color filter 1031 affect the relative spectral responsivity S0 ( ⁇ ) of the luminance meter 1000, and the first amplification factor G1 and the second amplification so that the influence ⁇ S2 ( ⁇ ) cancels each other.
  • the rates G2 can be made different from each other.
  • the influence ⁇ S1 ( ⁇ ) which is a set of the two color filters 1030 and 1031 of the influence ⁇ Si ( ⁇ ) of the wavelength error ⁇ i of the i-th color filter on the relative spectral response S0 ( ⁇ ) of the luminance meter 1000.
  • the amplification factor Gi is made different between the two electric signals (the first electric signal and the second electric signal) so that the influence ⁇ S2 ( ⁇ ) cancels out.
  • the first amplification factor G1 and the second amplification factor G2 indicate the magnitudes of the contribution of the first electrical signal and the second electrical signal to the luminance value LV, respectively.
  • the first modification of the first embodiment In the example, by making the first amplification factor G1 and the second amplification factor G2 different from each other, the magnitude of the contribution of one electrical signal to the luminance value LV is changed to two electrical signals (first electrical signal). And the second electrical signal) are weighted by the amplification mechanism 1050.
  • the first amplification factor G1 is set to the wavelength error ⁇ 1 of the first color filter 1030 so that the influence ⁇ S1 ( ⁇ ) and the influence ⁇ S2 ( ⁇ ) cancel each other.
  • the first amplification factor G1 and the second amplification factor G2 are set by circuit constants of elements constituting the amplifier 1 and the amplifier 2, respectively.
  • the element used for setting the circuit constant is typically a resistor.
  • the deviation f 1 ′ can be reduced without increasing the production cost of the luminance meter 1000.
  • Second Modification of First Embodiment 4.1 Suppression of Relative Spectral Response of Luminometer from Standard Specific Visibility
  • the wavelength of the first color filter 1030 The error ⁇ 1 and the wavelength error ⁇ 2 of the second color filter 1031 cancel each other. That is, the wavelength error ⁇ 1 and the wavelength error ⁇ 2 that are a set of the two color filters 1030 and 1031 having the wavelength error ⁇ i of the i-th color filter cancel each other.
  • the first coefficient C1 and the second coefficient C2 are set to be the same, and the first amplification is performed.
  • the rate G1 and the second gain G2 are the same.
  • the histogram in Fig. 6 shows the distribution of wavelength errors.
  • a color filter having a wavelength error suitable for the first color filter 1030 and a color filter having a wavelength filter suitable for the second color filter 1031 are prepared. Selected. Accordingly, a color filter having a wavelength error suitable for each of the two color filters 1030 and 1031 included in the luminance meter 1000 is selected from the prepared color filters.
  • the prepared color filters are classified into groups A1, A2, B1, B2, C1, and C2 shown in Table 1 when selecting two color filters.
  • Class ranges 1170, 1171, 1172, 1173, 1174 and 1175 in the histogram of FIG. 6 belong to the ranges of wavelength errors defined in the groups A1, A2, B1, B2, C1 and C2, respectively.
  • the typical wavelength errors defined for groups A1, A2, B1, B2, C1 and C2 are preferably within the range of wavelength errors defined for groups A1, A2, B1, B2, C1 and C2, respectively. Is in the middle of the range of wavelength errors defined in groups A1, A2, B1, B2, C1 and C2.
  • the wavelength error ranges defined in the groups A2, B2, and C2 are obtained by inverting the signs of the wavelength error ranges defined in the groups A1, B1, and C1, respectively.
  • the representative wavelength errors defined in the groups A2, B2, and C2 are obtained by inverting the signs of the representative wavelength errors defined in the groups A1, B1, and C1, respectively.
  • the number of groups may be increased or decreased.
  • the range of wavelength error and the representative wavelength error defined in each of the groups A1, A2, B1, B2, C1, and C2 may be changed.
  • each of the prepared color filters belongs to a group in which a range of wavelength errors including the wavelength errors of each of the prepared color filters is defined.
  • the color filters used as the first color filter 1030 and the second color filter 1031 are selected from the color filters belonging to the first group and the color filters belonging to the second group, respectively.
  • the first group and the second group are selected such that the representative wavelength error defined in the first group and the representative wavelength error defined in the second group cancel each other.
  • the color filters used as the first color filter 1030 and the second color filter 1031 may be selected from the color filters belonging to the groups A1 and A2 as shown in the combination a in Table 1.
  • the color filters belonging to the groups B1 and B2 may be selected as shown in the combination b in Table 1, or the color filters belonging to the groups C1 and C2 as shown in the combination c in Table 1 may be selected. Good.
  • the representative wavelength error defined in the first group and the representative wavelength error defined in the second group completely cancel each other, the representative wavelength error defined in the first group and the second group
  • the simple sum of the representative wavelength errors defined in (1) is zero.
  • the wavelength error ⁇ 1 of the first color filter 1030 and the wavelength error ⁇ 2 of the second color filter 1031 cancel each other. That is, the wavelength error ⁇ 1 and the wavelength error ⁇ 2 that are a set of the two color filters 1030 and 1031 having the wavelength error ⁇ i of the i-th color filter cancel each other.
  • the graph of FIG. 7 shows relative spectral responsivity and wavelength realized by a color filter having a wavelength error ⁇ of ⁇ 1.2 nm.
  • the relative spectral responsivity realized by a color filter with an error ⁇ of +0.5 nm is shown.
  • the graph of FIG. 8 shows the standard relative luminous sensitivity and the relative spectral response of the luminance meter.
  • the wavelength error ⁇ 1 of the first color filter 1030 is ⁇ 1.2 nm, and the relative spectral response S1 ( ⁇ ) realized by the first color filter 1030 is the relative spectral response S1 ( ⁇ ) shown in FIG.
  • the wavelength error ⁇ 2 of the second color filter 1031 is +0.5 nm, and the relative spectral response S2 ( ⁇ ) realized by the second color filter 1031 is the relative spectral response S2 ( ⁇ ) shown in FIG.
  • the color filters used as the first color filter 1030 and the second color filter 1031 are respectively selected from the color filters belonging to the groups B1 and B2, and the representative filters defined in the group B1 are selected.
  • the wavelength error and the representative wavelength error defined in group B2 cancel each other.
  • the relative spectral response S0 ( ⁇ ) of the luminance meter 1000 becomes the relative spectral response S0 ( ⁇ ) shown in FIG. 8, and the standard relative luminous sensitivity V of the relative spectral response S0 ( ⁇ ) of the luminance meter 1000 is obtained.
  • the deviation f 1 ′ from ( ⁇ ) becomes 2.0%, and the luminance meter 1000 becomes the L level. That is, the luminance meter 1000 that can achieve the L class can be realized by using the first color filter 1030 and the second color filter 1031 that should not achieve the L class.
  • the deviation of the relative spectral response of the luminance meter 1000 from the spectral ratio visibility is reduced without increasing the production cost of the luminance meter 1000. it can.
  • the second embodiment relates to a luminance meter.
  • FIG. 9 shows the luminance meter of the second embodiment.
  • the luminance meter 2000 includes an objective lens 2010, a field stop 2011, a bundle fiber 2012, a color filter group 2013, a light receiving sensor group 2014, a derivation mechanism 2015, a mirror 2016, and a finder system 2017.
  • the color filter group 2013 includes a first color filter 2030 and a second color filter 2031.
  • the light receiving sensor group 2014 includes a first light receiving sensor 2040 and a second light receiving sensor 2041.
  • the derivation mechanism 2015 includes a merging circuit 2050, an amplification mechanism 2051, a conversion mechanism 2052, and an arithmetic mechanism 2053.
  • the amplification mechanism 2051 includes an amplification circuit 2060.
  • the conversion mechanism 2052 includes a conversion circuit 2070.
  • the objective lens 2010, the field stop 2011, the bundle fiber 2012, the light receiving sensor group 2014, the mirror 2016, and the viewfinder system 2017 according to the second embodiment are respectively the objective lens 1010, the field stop 1011, the bundle fiber 1012, and the light receiving system according to the first embodiment.
  • the sensor group 1014, the mirror 1016, and the finder system 1017 are the same.
  • the first electric signal and the second electric signal output from the light receiving sensor group 2014 are merged by the merge circuit 2050.
  • the combined electrical signal is amplified by the amplifier circuit 2060.
  • the amplified electrical signal is analog / digital converted into a signal value S by the conversion circuit 2070.
  • the calculation mechanism 2053 is a microcomputer or the like, and calculates the luminance value LV from the signal value S.
  • the junction circuit 2050 is a circuit that connects the first light receiving sensor 2040 and the second light receiving sensor 2041 in parallel.
  • the energy of the combined electric signal is the sum of the energy of the first electric signal and the energy of the second electric signal.
  • the merging circuit 2050 may be a circuit that connects the first light receiving sensor 2040 and the second light receiving sensor 2041 in series.
  • the wavelength error ⁇ 1 of the first color filter 2030 is the same as the second modification of the first embodiment.
  • the wavelength error ⁇ 2 of the second color filter 2031 cancels out. Therefore, at the stage of the first electric signal and the second electric signal, the influence ⁇ S1 ( ⁇ ) of the wavelength error ⁇ 1 of the first color filter 2030 on the relative spectral response S0 ( ⁇ ) of the luminance meter 2000 and the first electric signal.
  • the influence ⁇ S2 ( ⁇ ) of the wavelength error ⁇ 2 of the second color filter 2031 on the relative spectral response S0 ( ⁇ ) of the luminance meter 2000 can already be canceled.
  • the influence ⁇ S1 ( ⁇ ) and the influence ⁇ S2 ( ⁇ ) cancel out at the stage of the luminance value LV.
  • the deviation of the relative spectral response of the luminance meter 2000 from the spectral ratio visibility can be reduced without increasing the production cost of the luminance meter 2000.
  • the number of amplifier circuits and conversion circuits is reduced, and the production cost of the luminance meter 2000 is further reduced.
  • the third embodiment relates to a luminance meter.
  • FIG. 10 shows the luminance meter of the third embodiment.
  • the luminance meter 3000 includes an objective lens 3010, a field stop 3011, a bundle fiber 3012, a color filter group 3013, a light receiving sensor group 3014, a derivation mechanism 3015, a mirror 3016, and a viewfinder system 3017.
  • the color filter group 3013 includes a first color filter 3030 and a second color filter 3031.
  • the light receiving sensor group 3014 includes a first light receiving sensor 3040 and a second light receiving sensor 3041.
  • the derivation mechanism 3015 includes an amplification mechanism 3050, a junction circuit 3051, a conversion mechanism 3052, and an arithmetic mechanism 3053.
  • the amplification mechanism 3050 includes a first amplification circuit 3060 and a second amplification circuit 3061.
  • the conversion mechanism 3052 includes a conversion circuit 3070.
  • the objective lens 3010, the field stop 3011, the bundle fiber 3012, the color filter group 3013, and the light receiving sensor group 3014 of the third embodiment are respectively the objective lens 1010, the field stop 1011, the bundle fiber 1012, and the color filter group of the first embodiment. 1013 and the light receiving sensor group 1014 are the same.
  • the first electric signal and the second electric signal output from the light receiving sensor group 3014 are amplified by the first amplifier circuit 3060 and the second amplifier circuit 3061, respectively.
  • the amplified first electric signal and second electric signal are merged by the merge circuit 3051.
  • the combined electrical signal is analog / digital converted to a signal value S by the conversion circuit 3070.
  • the calculation mechanism 3053 is a microcomputer or the like, and calculates the luminance value LV from the signal value S.
  • the wavelength error ⁇ 1 of the first color filter 3030 is the same as in the first modification of the first embodiment.
  • the luminance meter 3000 on the relative spectral response S0 ( ⁇ ) ⁇ S1 ( ⁇ ) and the wavelength error ⁇ 2 of the second color filter 3031 on the luminance meter 3000 relative spectral response S0 ( ⁇ ) ⁇ S2 ( ⁇ ) are weighted by the amplification mechanism 3050 so as to cancel each other.
  • the influence ⁇ S1 ( ⁇ ) and the influence ⁇ S2 ( ⁇ ) can already be canceled at the stage of the amplified first electric signal and second electric signal.
  • the influence ⁇ S1 ( ⁇ ) and the influence ⁇ S2 ( ⁇ ) cancel out at the stage of the luminance value LV.
  • the deviation of the relative spectral response of the luminance meter 3000 from the spectral relative luminous sensitivity can be reduced without increasing the production cost of the luminance meter 3000.
  • the number of conversion circuits is reduced, and the production cost of the luminance meter 3000 is further reduced.
  • the fourth embodiment relates to a luminance meter.
  • FIG. 11 shows the luminance meter of the fourth embodiment.
  • the luminance meter 4000 includes an objective lens 4010, a field stop 4011, a bundle fiber 4012, a color filter group 4013, a light receiving sensor group 4014, a lead-out mechanism 4015, a mirror 4016, and a finder system 4017.
  • the color filter group 4013 includes a first color filter 4030, a second color filter 4031, and a third color filter 4032.
  • the light receiving sensor group 4014 includes a first light receiving sensor 4040, a second light receiving sensor 4041, and a third light receiving sensor 4042.
  • the derivation mechanism 4015 includes an amplification mechanism 4050, a conversion mechanism 4051, and an arithmetic mechanism 4052.
  • the amplification mechanism 4050 includes a first amplification circuit 4060, a second amplification circuit 4061, and a third amplification circuit 4062.
  • the conversion mechanism 4051 includes a first conversion circuit 4070, a second conversion circuit 4071, and a third conversion circuit 4072.
  • the objective lens 4010, the field stop 4011, the mirror 4016, and the finder system 4017 of the fourth embodiment are the same as the objective lens 1010, the field stop 1011, the mirror 1016, and the finder system 1017 of the first embodiment, respectively.
  • the light beam 4100 limited by the field stop 4011 is incident on the incident end 4110 of the bundle fiber 4012.
  • the incident light bundle 4100 is branched by the bundle fiber 4012.
  • the first beam bundle 4120, the second beam bundle 4121, and the third beam bundle 4122 obtained by the branching are respectively the first emission end 4130, the second emission end 4131, and the third emission ray of the bundle fiber 4012.
  • the light is emitted from the end 4132.
  • the emitted first light bundle 4120, second light bundle 4121, and third light bundle 4122 are transmitted through the first color filter 4030, the second color filter 4031, and the third color filter 4032, respectively.
  • the transmitted first light bundle 4120, second light bundle 4121, and third light bundle 4122 are received by the first light receiving sensor 4040, the second light receiving sensor 4041, and the third light receiving sensor 4042, respectively.
  • the first light receiving sensor 4040, the second light receiving sensor 4041, and the third light receiving sensor 4042 respectively correspond to the first light bundle 4120, the second light bundle 4121, and the third light bundle 4122 that are received.
  • 1 electrical signal, 2nd electrical signal, and 3rd electrical signal are output.
  • the deriving mechanism 4015 derives the luminance value LV corresponding to the spectral distribution of the light beam 4080 to be measured from the first electric signal, the second electric signal, and the third electric signal.
  • the first electric signal, the second electric signal, and the third electric signal are amplified by the first amplifier circuit 4060, the second amplifier circuit 4061, and the third amplifier circuit 4062, respectively.
  • the amplification factor when the first amplifier circuit 4060, the second amplifier circuit 4061, and the third amplifier circuit 4062 amplify the first electric signal, the second electric signal, and the third electric signal is expressed as The first amplification factor G1, the second amplification factor G2, and the third amplification factor G3, respectively.
  • the amplified first electric signal, second electric signal, and third electric signal are converted into a first signal value by the first conversion circuit 4070, the second conversion circuit 4071, and the third conversion circuit 4072, respectively.
  • Analog / digital conversion is performed into S1, the second signal value S2, and the third signal value S3.
  • the calculation mechanism 4052 is a microcomputer or the like, and calculates the luminance value LV from the first signal value S1, the second signal value S2, and the third signal value S3.
  • Each of the responsiveness S3 ( ⁇ ) is approximated to the standard relative luminous sensitivity V ( ⁇ ).
  • the relative spectral response S1 ( ⁇ ) indicates the relationship between the spectral distribution of the light bundle 4080 to be measured and the first signal value S1.
  • the relative spectral response S2 ( ⁇ ) indicates the relationship between the spectral distribution of the light bundle 4080 to be measured and the second signal value S2.
  • the relative spectral response S3 ( ⁇ ) indicates the relationship between the measured spectral distribution of the light beam 4080 and the third signal value S3.
  • the wavelength error ⁇ 1 of the first color filter 4030, the second color filter 4031, and so on cancel each other. That is, the wavelength error ⁇ 1, the wavelength error ⁇ 2, and the wavelength error ⁇ 3, which are a set of the three color filters 4030, 4031, and 4032 with the wavelength error ⁇ i of the i-th color filter cancel each other.
  • the first coefficient C1, the second coefficient C2, and the third coefficient C3 are set to be the same as each other.
  • the amplification factor G1, the second amplification factor G2, and the third amplification factor G3 are the same.
  • a color filter having a wavelength error suitable for the first color filter 4030, a color filter having a wavelength error suitable for the second color filter 4031, and a wavelength error suitable for the third color filter 4032 Is selected from the prepared color filters. Accordingly, a color filter having a wavelength error suitable for each of the three color filters included in the luminance meter 4000 is selected from the prepared color filters.
  • the prepared color filters are classified into groups X, A1, A2, B1, B2, C1, C2, D1 and D2 shown in Table 2.
  • the typical wavelength errors defined in groups X, A1, A2, B1, B2, C1, C2, D1, and D2 are defined in groups X, A1, A2, B1, B2, C1, C2, D1, and D2, respectively.
  • the wavelength error ranges defined in the groups A2, B2, C2, and D2 are obtained by inverting the signs of the wavelength error ranges defined in the groups A1, B1, C1, and D1, respectively.
  • the representative wavelength errors defined in the groups A2, B2, C2, and D2 are obtained by inverting the signs of the representative wavelength errors defined in the groups A1, B1, C1, and D1, respectively.
  • the number of groups may be increased or decreased.
  • the wavelength error range and the representative wavelength error defined in each of the groups X, A1, A2, B1, B2, C1, C2, D1, and D2 may be changed.
  • each of the prepared color filters belongs to a group in which a range of wavelength errors including the wavelength errors of each of the prepared color filters is defined.
  • Color filters used as the first color filter 4030, the second color filter 4031, and the third color filter 4032 are selected from the color filters belonging to the first group, the second group, and the third group, respectively. Is done.
  • the first group, the second group, and the third group are defined in the representative wavelength error defined in the first group, the representative wavelength error defined in the second group, and the third group.
  • the representative wavelength error is selected to cancel.
  • the color filters used as the first color filter 4030, the second color filter 4031, and the third color filter 4032 belong to the groups X, A1, and A2, respectively, as shown in the combination a in Table 1.
  • color filters may be selected from color filters belonging to groups X, B1, and B2 as shown in combination b of Table 1, or group X as shown in combination c of Table 1.
  • C1 and C2 may be selected from the color filters belonging to groups X, D1 and D2, as shown in the combination d of Table 1. It is also permissible that no selection is made from color filters belonging to group X in which a representative wavelength error of zero is defined. Groups A2, B2, and C2 in which the number of color filters selected from the color filters belonging to the groups A1, B1, C1, or D1 in which the representative wavelength errors that are negative are defined are positive are defined. Alternatively, it may be different from the number of color filters selected from the color filters belonging to D2.
  • Two or more color filters may be selected from the color filters belonging to one group.
  • the color filters used as the first color filter 4030, the second color filter 4031, and the third color filter 4032 are grouped into groups D1, A2, and C2, respectively, as shown in the combination e of Table 2.
  • the representative wavelength error defined in the first group, the representative wavelength error defined in the second group, and the representative wavelength error defined in the third group completely cancel each other, the first group The sum of the representative wavelength error defined in 1), the representative wavelength error defined in the second group, and the representative wavelength error defined in the third group becomes zero.
  • the wavelength error ⁇ 1 of the first color filter 4030, the wavelength error ⁇ 2 of the second color filter 4031, and the wavelength error ⁇ 3 of the third color filter 4032 cancel each other. That is, the wavelength error ⁇ 1, the wavelength error ⁇ 2, and the wavelength error ⁇ 3, which are a set of the three color filters 4030, 4031, and 4032 of the wavelength error of the i-th color filter cancel each other.
  • the first electric signal, the second electric signal, and the third electric signal output from the light receiving sensor group 4014 are merged by the merge circuit, and the merged electric signal is amplified by the amplifier circuit. Then, the amplified electric signal may be converted into a signal value by the conversion circuit, and the calculation mechanism may calculate the luminance value LV from the signal value. Further, as in the fourth embodiment, the amplified first electric signal, second electric signal, and third electric signal output from the amplification mechanism 4050 are merged by the merge circuit, and the merged electric signal is converted. It may be converted into a signal value by a circuit, and the calculation mechanism may calculate the luminance value LV from the signal value.
  • Weighting may be performed by the calculation mechanism 4052 so as to cancel each other.
  • weighting may be performed by the amplification mechanism 4050 so that the influence ⁇ S1 ( ⁇ ), the influence ⁇ S2 ( ⁇ ), and the influence ⁇ S3 ( ⁇ ) cancel each other.
  • the deviation of the relative spectral response of the luminance meter 4000 from the spectral ratio visibility can be reduced without increasing the production cost of the luminance meter 4000.
  • the fifth embodiment relates to a color luminance meter.
  • a color luminance meter is a measuring instrument that measures the color and luminance of a light source.
  • FIG. 12 shows a color luminance meter of the fifth embodiment.
  • the color luminance meter 5000 includes an objective lens 5010, a field stop 5011, a bundle fiber 5012, a color filter group 5013X, a light receiving sensor group 5014X, a derivation mechanism 5015X, a color filter group 5013Y, a light receiving sensor group 5014Y, A derivation mechanism 5015Y, a color filter group 5013Z, a light receiving sensor group 5014Z, a derivation mechanism 5015Z, a mirror 5016, and a finder system 5017 are provided.
  • Each of the color filter group 5013X, the color filter group 5013Y, and the color filter group 5013Z includes a first color filter 5030 and a second color filter 5031.
  • Each of the light receiving sensor group 5014X, the light receiving sensor group 5014Y, and the light receiving sensor group 5014Z includes a first light receiving sensor 5040 and a second light receiving sensor 5041.
  • Each of the derivation mechanism 5015X, the derivation mechanism 5015Y, and the derivation mechanism 5015Z includes an amplification mechanism 5050, a conversion mechanism 5051, and an arithmetic mechanism 5052.
  • the amplification mechanism 5050 includes a first amplification circuit 5060 and a second amplification circuit 5061.
  • the conversion mechanism 5051 includes a first conversion circuit 5070 and a second conversion circuit 5071.
  • the objective lens 5010, the field stop 5011, the mirror 5016, and the finder system 5017 of the fifth embodiment are the same as the objective lens 1010, the field stop 1011, the mirror 1016, and the finder system 1017 of the first embodiment, respectively.
  • the light beam 5100 limited by the field stop 5011 is incident on the incident end 5110 of the bundle fiber 5012.
  • the incident light bundle 5100 is branched by the bundle fiber 5012.
  • the bundle of rays 5120X, the bundle of rays 5121X, the bundle of rays 5120Y, the bundle of rays 5121Y, the bundle of rays 5120Z, and the bundle of rays 5121Z obtained by the branching are respectively the exit end 5130X, exit end 5131X, exit end 5130Y, exit end 5131Y of the bundle fiber 5012.
  • the light is emitted from the emission end 5130Z and the emission end 5131Z.
  • the description of the configuration for obtaining the stimulus value X is the description of the configuration for obtaining the stimulus value Y by replacing “X” and “x” in the description with “Y” and “y”, respectively.
  • “X” and “x” in the description are read as “Z” and “z”, respectively, to explain the configuration for obtaining the stimulus value Z.
  • the emitted first beam bundle 5120X and second beam bundle 5121X are transmitted through the first color filter 5030 and the second color filter 5031 belonging to the color filter group 5013X, respectively.
  • the transmitted first light bundle 5120X and second light bundle 5121X are received by the first light receiving sensor 5040 and the second light receiving sensor 5041 belonging to the light receiving sensor group 5014X, respectively.
  • the first light receiving sensor 5040 and the second light receiving sensor 5041 belonging to the light receiving sensor group 5014X respectively include a first electric signal and a second light signal corresponding to the received first light bundle 5120X and second light bundle 5121X. Outputs electrical signals.
  • the deriving mechanism 5015X derives the stimulus value X corresponding to the spectral distribution of the light beam 5080 to be measured from the first electric signal and the second electric signal.
  • the first electric signal and the second electric signal are amplified by the first amplifier circuit 5060 and the second amplifier circuit 5061 belonging to the derivation mechanism 5015X, respectively.
  • the amplified first electric signal and second electric signal are respectively converted into the first signal value SX1 and the second signal value SX2 by the first conversion circuit 5070 and the second conversion circuit 5071 belonging to the derivation mechanism 5015X.
  • An arithmetic mechanism 5052 belonging to the derivation mechanism 5015X is a microcomputer or the like, and calculates a luminance value LV from the first signal value SX1 and the second signal value SX2.
  • the color luminance meter 5000 having the wavelength error ⁇ 1X of the first color filter 5030 belonging to the color filter group 5013X Influence on relative spectral response S0X ( ⁇ ) ⁇ S1X ( ⁇ ) and influence of wavelength error ⁇ 2X of second color filter 5031 belonging to color filter group 5013X on relative spectral response S0X ( ⁇ ) of color luminance meter 5000 Weighting is performed by the calculation mechanism 5052 or the amplification mechanism 5050 so that ( ⁇ ) cancels each other. In the color filter group 5013X, the wavelength error ⁇ 1X and the wavelength error ⁇ 2X may be canceled out.
  • the deviation of the relative spectral response of the color luminance meter 5000 from the color matching function can be reduced without increasing the production cost of the color luminance meter 5000.
  • the sixth embodiment relates to an illuminometer.
  • An illuminometer is a measuring instrument that measures the illuminance of a light source.
  • FIG. 13 shows an illuminometer of the sixth embodiment.
  • the illuminometer 6000 includes a diffusing sphere 6010, a diffusing plate group 6011, a color filter group 6012, a light receiving sensor group 6013, and a derivation mechanism 6014.
  • the diffusion plate group 6011 includes a first diffusion plate 6020, a second diffusion plate 6021, and a third diffusion plate 6022.
  • the color filter group 6012 includes a first color filter 6030, a second color filter 6031, and a third color filter 6032.
  • the light receiving sensor group 6013 includes a first light receiving sensor 6040, a second light receiving sensor 6041, and a third light receiving sensor 6042.
  • the derivation mechanism 6014 includes an amplification mechanism 6050, a conversion mechanism 6051, and an arithmetic mechanism 6052.
  • the amplification mechanism 6050 includes a first amplification circuit 6060, a second amplification circuit 6061, and a third amplification circuit 6062.
  • the conversion mechanism 6051 includes a first conversion circuit 6070, a second conversion circuit 6071, and a third conversion circuit 6072.
  • the diffusion sphere 6010 functions as a transmission type diffusion member, the light beam 6080 to be measured is diffused by the diffusion sphere 6010 when passing through the diffusion sphere 6010. As a result, the light beam 6080 to be measured is branched by the diffusing sphere 6010.
  • the first beam bundle 6090, the second beam bundle 6091, and the third beam bundle 6092 obtained by the branching are directed to the first diffusion plate 6020, the second diffusion plate 6021, and the third diffusion plate 6022, respectively.
  • the diffusing sphere 6010 that is a hemispherical diffusing member may be replaced with a non-hemispheric diffusing member.
  • the diffusion sphere 6010 may be replaced with a flat diffusion plate.
  • the first light beam 6090, the second light beam 6091, and the third light beam 6092 are diffused by the first diffusion plate 6020, the second diffusion plate 6021, and the third diffusion plate 6022, respectively.
  • the diffused first light bundle 6090, second light bundle 6091, and third light bundle 6092 are transmitted through the first color filter 6030, the second color filter 6031, and the third color filter 6032, respectively.
  • the transmitted first light bundle 6090, second light bundle 6091, and third light bundle 6092 are received by the first light receiving sensor 6040, the second light receiving sensor 6041, and the third light receiving sensor 6042, respectively.
  • the first light receiving sensor 6040, the second light receiving sensor 6041, and the third light receiving sensor 6042 respectively correspond to the received first light bundle 6090, second light bundle 6091, and third light bundle 6092, respectively.
  • 1 electrical signal, 2nd electrical signal, and 3rd electrical signal are output.
  • the derivation mechanism 6014 calculates the illuminance value IV from the first electric signal, the second electric signal, and the third electric signal.
  • the first electric signal, the second electric signal, and the third electric signal are amplified by the first amplifier circuit 6060, the second amplifier circuit 6061, and the third amplifier circuit 6062, respectively.
  • the amplified first electric signal, second electric signal, and third electric signal are converted into first signal values by the first conversion circuit 6070, the second conversion circuit 6071, and the third conversion circuit 6072, respectively.
  • Analog / digital conversion is performed into S1, the second signal value S2, and the third signal value S3.
  • the calculation mechanism 6052 is a microcomputer or the like, and calculates the illuminance value IV from the first signal value S1, the second signal value S2, and the third signal value S3.
  • Each of the responsiveness S3 ( ⁇ ) is approximated to the standard relative luminous sensitivity V ( ⁇ ).
  • the relative spectral response S0 ( ⁇ ) of the illuminometer 6000 with the wavelength error ⁇ 1 of the first color filter 6030.
  • the wavelength error ⁇ 2 of the second color filter 6031 on the relative spectral response S0 ( ⁇ ) of the illuminometer 6000 and the third color filter 6032 of the wavelength error ⁇ 3.
  • Weighting is performed by the calculation mechanism 6052 or the amplification mechanism 6050 so that the influence ⁇ S3 ( ⁇ ) of the illuminometer 6000 on the relative spectral response S0 ( ⁇ ) cancels out.
  • the wavelength error ⁇ 1, the wavelength error ⁇ 2, and the wavelength error ⁇ 3 may be canceled out.
  • the deviation of the relative spectral response of the illuminometer 6000 from the spectral ratio visibility can be reduced without increasing the production cost of the illuminometer 6000.
  • a seventh embodiment relates to a colorimeter.
  • a color meter is a measuring instrument that measures the color of an object.
  • FIG. 14 shows a colorimeter of the seventh embodiment.
  • the schematic diagram of FIG. 15 shows the measurement mechanism with which the colorimeter of 7th Embodiment is provided.
  • the schematic diagram of FIG. 16 shows the light receiving mechanism and controller for reflected light included in the colorimeter of the seventh embodiment.
  • the color meter 7000 includes a measurement mechanism 7010 and a controller 7011.
  • the measurement mechanism 7010 includes a radiation mechanism 7020, a light beam separation mechanism 7021, an imaging mechanism 7022, an integrating sphere 7023, a light receiving mechanism 7024 for reflected light, and a light receiving mechanism 7025 for reference light.
  • the light receiving mechanism 7024 for reflected light includes a color filter group 7030X, a light receiving sensor group 7031X, a color filter group 7030Y, a light receiving sensor group 7031Y, a color filter group 7030Z, and a light receiving sensor group 7031Z, as shown in FIG. As shown in FIG.
  • the controller 7011 includes a derivation mechanism 7040X, a derivation mechanism 7040Y, and a derivation mechanism 7040Z.
  • Each of the color filter group 7030X, the color filter group 7030Y, and the color filter group 7030Z includes a first color filter 7050 and a second color filter 7051.
  • Each of the light receiving sensor group 7031X, the light receiving sensor group 7031Y, and the light receiving sensor group 7031Z includes a first light receiving sensor 7060 and a second light receiving sensor 7061.
  • Each of the derivation mechanism 7040X, the derivation mechanism 7040Y, and the derivation mechanism 7040Z includes an amplification mechanism 7070, a conversion mechanism 7071, and an arithmetic mechanism 7072.
  • the amplification mechanism 7070 includes a first amplification circuit 7080 and a second amplification circuit 7081.
  • the conversion mechanism 7071 includes a first conversion circuit 7090 and a second conversion circuit 7091.
  • the radiation mechanism 7020 is a lamp + reflector + diffusion plate or the like, and emits a light beam.
  • the light beam separation mechanism 7021 is a half mirror or the like.
  • the imaging mechanism 7022 is a lens or the like.
  • the emitted light bundle is separated into a light bundle 7100 for illumination light and a light bundle 7101 for reference light by a light bundle separation mechanism 7021.
  • the beam bundle 7100 of illumination light is imaged by the imaging mechanism 7022.
  • the imaged light bundle 7100 of illumination light illuminates the sample.
  • the integrating sphere 7023 functions as a reflection type diffusing member, the measured light bundle 7102 obtained by the sample reflecting the light bundle 7100 of the illumination light is reflected by the integrating sphere 7023 when reflected by the integrating sphere 7023. Diffuse reflected. As a result, the beam bundle 7102 to be measured is branched by the integrating sphere 7023, and beam bundles 7110X, 7111X, 7110Y, 7111Y, 7110Z, and 7111Z are obtained.
  • the integrating sphere 7023 which is a spherical diffusing member may be replaced with a non-spherical reflective diffusing member.
  • the description of the configuration for obtaining the stimulus value X is the description of the configuration for obtaining the stimulus value Y by replacing “X” and “x” in the description with “Y” and “y”, respectively.
  • “X” and “x” in the description are read as “Z” and “z”, respectively, to explain the configuration for obtaining the stimulus value Z.
  • the first light bundle 7110X and the second light bundle 7111X are transmitted through the first color filter 7050 and the second color filter 7051 belonging to the color filter group 7030X, respectively.
  • the transmitted first light beam 7110X and second light beam 7111X are received by the first light receiving sensor 7060 and the second light receiving sensor 7061 belonging to the light receiving sensor group 7031X, respectively.
  • the first light receiving sensor 7060 and the second light receiving sensor 7061 belonging to the light receiving sensor group 7031X respectively receive the first electric signal and the second light signal according to the received first light bundle 7110X and second light bundle 7111X. Outputs electrical signals.
  • the deriving mechanism 7040X derives the stimulus value X corresponding to the spectral distribution of the light beam 7102 to be measured from the first electric signal and the second electric signal.
  • the first electric signal and the second electric signal are amplified by a first amplifier circuit 7080 and a second amplifier circuit 7081 belonging to the derivation mechanism 7040X, respectively.
  • the amplified first electric signal and second electric signal are respectively converted into the first signal value SX1 and the second signal value SX2 by the first conversion circuit 7090 and the second conversion circuit 7091 belonging to the derivation mechanism 7040X.
  • the calculation mechanism 7072 belonging to the derivation mechanism 7040X is a microcomputer or the like, and calculates the stimulation value X from the first signal value SX1 and the second signal value SX2.
  • the relative spectral response of the colorimeter 6000 with the wavelength error ⁇ 1 of the first color filter 7050 belonging to the color filter group 7030X is performed by the calculation mechanism 7072 or the amplification mechanism 7070 so that the influence on the relative spectral response of the x component of the colorimeter of the wavelength error ⁇ 2 of the second color filter 7051 belonging to the color filter group 7030X is canceled out. Is done. In the color filter group 7030X, the wavelength error ⁇ 1 and the wavelength error ⁇ 2 may be canceled out.
  • the deviation from the color matching function of the relative spectral response of the color meter 7000 can be reduced without increasing the production cost of the color meter 7000.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

La présente invention permet de réduire l'écart de la sensibilité spectrale relative d'un dispositif de mesure à partir d'une fonction de sensibilité spectrale sans augmenter le coût de fabrication du dispositif de mesure. Dans un dispositif de mesure de luminance, un faisceau de lumière à mesurer est ramifié par un faisceau de fibres. Chacun de la pluralité de faisceaux de lumière qui sont obtenus passe à travers un filtre coloré. La sensibilité spectrale relative obtenue pour chacun de la pluralité de filtres colorés est amenée à se rapprocher d'une sensibilité spectrale relative standard. Chacun de la pluralité de faisceaux de lumière qui sont passés à travers un filtre coloré est reçu par un capteur de réception de lumière. Chacun de la pluralité de capteurs de réception de lumière délivre en sortie un signal électrique en fonction du faisceau de lumière reçu. Un mécanisme de dérivation dérive une valeur de luminance correspondant à la distribution spectrale des faisceaux de lumière mesurés à partir de la pluralité de signaux électriques qui sont obtenus.
PCT/JP2016/067712 2015-06-24 2016-06-15 Dispositif de mesure et procédé de fabrication de dispositif de mesure Ceased WO2016208462A1 (fr)

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DE112016002826.1T DE112016002826T5 (de) 2015-06-24 2016-06-15 Messgerät und Verfahren zum Herstellen des Messgeräts

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204427A (en) * 1981-06-11 1982-12-15 Omron Tateisi Electronics Co Color discriminating element of 3 primary color separation
JPS63154920A (ja) * 1986-12-19 1988-06-28 Matsushita Electric Ind Co Ltd 照度計受光部
JPH0245718A (ja) * 1988-08-05 1990-02-15 Minolta Camera Co Ltd 光電色彩計の分光感度補正機構
JPH04113235A (ja) * 1990-09-04 1992-04-14 Minolta Camera Co Ltd 光センサー
US5149182A (en) * 1991-05-02 1992-09-22 Tektronix, Inc. Optical filter for an optical measurement instrument
JPH05281021A (ja) * 1992-03-30 1993-10-29 Horiba Ltd 熱型検出器の感度評価方法
JP2010139446A (ja) * 2008-12-12 2010-06-24 Hioki Ee Corp 積分球及び測光装置
JP2011107114A (ja) * 2009-10-20 2011-06-02 Hioki Ee Corp 測光装置
WO2011121896A1 (fr) * 2010-03-31 2011-10-06 コニカミノルタセンシング株式会社 Système optique pour la mesure, et dispositif de mesure de luminance de couleur et colorimètre l'utilisant

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57204427A (en) * 1981-06-11 1982-12-15 Omron Tateisi Electronics Co Color discriminating element of 3 primary color separation
JPS63154920A (ja) * 1986-12-19 1988-06-28 Matsushita Electric Ind Co Ltd 照度計受光部
JPH0245718A (ja) * 1988-08-05 1990-02-15 Minolta Camera Co Ltd 光電色彩計の分光感度補正機構
JPH04113235A (ja) * 1990-09-04 1992-04-14 Minolta Camera Co Ltd 光センサー
US5149182A (en) * 1991-05-02 1992-09-22 Tektronix, Inc. Optical filter for an optical measurement instrument
JPH05281021A (ja) * 1992-03-30 1993-10-29 Horiba Ltd 熱型検出器の感度評価方法
JP2010139446A (ja) * 2008-12-12 2010-06-24 Hioki Ee Corp 積分球及び測光装置
JP2011107114A (ja) * 2009-10-20 2011-06-02 Hioki Ee Corp 測光装置
WO2011121896A1 (fr) * 2010-03-31 2011-10-06 コニカミノルタセンシング株式会社 Système optique pour la mesure, et dispositif de mesure de luminance de couleur et colorimètre l'utilisant

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