WO2022050055A1 - Élément de masque pour dispositif de mesure de couleur, dispositif de mesure de couleur et procédé de mesure de couleur - Google Patents

Élément de masque pour dispositif de mesure de couleur, dispositif de mesure de couleur et procédé de mesure de couleur Download PDF

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Publication number
WO2022050055A1
WO2022050055A1 PCT/JP2021/030277 JP2021030277W WO2022050055A1 WO 2022050055 A1 WO2022050055 A1 WO 2022050055A1 JP 2021030277 W JP2021030277 W JP 2021030277W WO 2022050055 A1 WO2022050055 A1 WO 2022050055A1
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WO
WIPO (PCT)
Prior art keywords
color
mask member
color measurement
measurement target
resin
Prior art date
Application number
PCT/JP2021/030277
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English (en)
Japanese (ja)
Inventor
英子 藤山
Original Assignee
大日精化工業株式会社
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Filing date
Publication date
Application filed by 大日精化工業株式会社 filed Critical 大日精化工業株式会社
Publication of WO2022050055A1 publication Critical patent/WO2022050055A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters

Definitions

  • Such a colorimeter includes, for example, a light source that emits irradiation light that irradiates the surface of a color measurement target such as a product, and a receiver such as a sensor that receives reflected light emitted from the surface of the color measurement target.
  • the mask member for the color measuring device shown below is provided.
  • FIG. 1 is a front view schematically showing an embodiment of the mask member of the present invention.
  • FIG. 2 is a perspective view schematically showing an embodiment of the mask member of the present invention.
  • the mask member 10 of the present embodiment is a disk-shaped member in which a window portion 5 penetrating in the thickness direction thereof is formed substantially in the center.
  • the window portion 5 is formed so as to optically penetrate the mask member 10 in the thickness direction.
  • Optically penetrating means not only physically penetrating but also light, especially visible light, as long as it can pass through.
  • the window portion may be provided with a transparent material such as glass, but it is preferable that the window portion physically penetrates is formed.
  • the overall shape of the mask member is not limited to the disk shape shown in FIGS. 1 and 2, and may be any shape. However, in consideration of practical handleability and the like, the disk shape shown in FIGS. 1 and 2 is preferable.
  • the shape of the window portion is not limited to the circular shape shown in FIGS. 1 and 2, and may be any shape. However, in substance, it is preferably one of a circle, an ellipse, and an oval.
  • the general mask member used in conventional colorimeters and the like was made of an opaque material such as a metal plate, a metal coated plate, or a resin plate.
  • the mask member 10 for the color measuring device of the present embodiment is a transparent or translucent member.
  • the present inventor has a relatively large size by using a color measuring device in which such a transparent or opaque mask member 10 is arranged between a color measuring object and a light source and at a position in contact with the color measuring object. It was found that even if the color measurement target is small, the color difference from the visual tint is small and the color can be measured more accurately.
  • the visible light transmittance of the mask member 10 is preferably 80% or more, more preferably 85% or more, particularly preferably 90% or more, and most preferably 95 to 100%. By setting the visible light transmittance to 80% or more, even if the size of the color measurement target is small, the color difference from the visual tint can be further reduced, and more accurate color measurement becomes possible. ..
  • the "visible light transmittance" in the present specification is a visible light transmittance in the wavelength region of 380 to 780 nm measured in accordance with JIS R 3106: 2019.
  • the mask member 10 is usually made of a transparent or translucent material (hereinafter, collectively referred to as "transparent material").
  • transparent material examples include acrylic resin, polycarbonate resin, polyethylene terephthalate resin, hard polyvinyl chloride resin, polystyrene resin, polypropylene resin, polyethylene resin, methylmethacrylate acrylonitrile butadiene styrene resin, acrylonitrile styrene resin, polyamide resin, and fluororesin.
  • transparent material include acrylic resin, polycarbonate resin, polyethylene terephthalate resin, hard polyvinyl chloride resin, polystyrene resin, polypropylene resin, polyethylene resin, methylmethacrylate acrylonitrile butadiene styrene resin, acrylonitrile styrene resin, polyamide resin, and fluororesin.
  • epoxy resin quartz, and glass.
  • resin materials such as acrylic resin, polycarbonate resin, polyethylene terephthalate resin,
  • the maximum opening diameter D 1 (FIG. 1) of the window portion 5 of the mask member 10 is usually made smaller than the measurable size of the color measurement target (sample). That is, the maximum opening diameter D1 of the window portion 5 may be appropriately set according to the size of the color measurement target and the like. Specifically, the maximum opening diameter D 1 of the window portion 5 of the mask member 10 is preferably 20 mm or less, more preferably 15 mm or less, and particularly preferably 13 mm or less. The lower limit of the maximum opening diameter D1 of the window portion 5 is not particularly limited, and may be substantially larger than the measured diameter of the spectrophotometer (for example, 4 mm or more).
  • the mask member according to the embodiment of the present invention may be composed of only a disk-shaped member as shown in FIGS. 1 and 2, and is mounted for mounting on the main body of the color measuring device described later. It may further include other configurations such as a unit and a detection unit for recognizing that the mask member is attached to the main body of the color measuring device.
  • a window portion optically penetrating in the thickness direction thereof is formed between the color measuring object and the light source, and is arranged at a position in contact with the color measuring object.
  • It is a color measuring device including a mask member to be used.
  • the mask member is the mask member according to the embodiment of the present invention described above.
  • one embodiment of the color measuring method of the present invention includes a step of measuring a color to be measured by using this color measuring device.
  • FIG. 3 is a schematic diagram showing an embodiment of the color measuring device of the present invention.
  • the color measuring device 50 of the present embodiment measures colors through an integrating sphere 8 in which an incident window 2, an irradiation window 4, and a light receiving window 6 are formed, and an incident window 2 and an irradiation window 4.
  • a light source 14 that generates irradiation light to irradiate the surface of the target 12, a light receiving unit 16 that receives the reflected light reflected from the surface of the color measurement target 12 through the light receiving window 6, and a color measurement target 12 and the light source 14.
  • the mask member 20 is provided so that the window portion 15 is located at a position corresponding to the irradiation window 4 of the integrating sphere 8.
  • the inner wall surface of the integrating sphere 8 is coated with a white diffuse-reflecting paint such as magnesium oxide (MgO) or barium sulfate (BaSO 4 ).
  • MgO magnesium oxide
  • BaSO 4 barium sulfate
  • the light emitted from the light source 14 and incident on the integrating sphere 8 from the incident window 2 is diffusely reflected on the inner wall surface of the integrating sphere 8, and a part (irradiation light) thereof presses the irradiation window 4 and the window portion 15 of the mask member 20.
  • the surface of the color measurement target 12 is irradiated through. Then, the light (reflected light) reflected on the surface of the color measurement target 12 is received by the light receiving unit 16 through the light receiving window 6.
  • the light source 14 can generate light in the visible light region (wavelength region 380 to 780 nm).
  • the light source 14 for example, a xenon lamp or the like can be used.
  • a spectroscope may be provided between the light source 14 and the incident window 2.
  • the light receiving unit 16 includes, for example, a spectroscopic lens, a spectroscope, and an array sensor in which a plurality of light receiving elements are arranged.
  • the reflected light received through the light receiving window 6 is separated by a spectroscopic lens and introduced into the spectroscope, and the value of the emitted light amount for each wavelength component of the array sensor is output to the arithmetic control unit 18. Then, the information processed by the arithmetic control unit 18 can be output to the outside through the input / output interface 35.
  • the color measuring device 50 of the present embodiment includes the above-mentioned transparent or translucent mask member 20 in which a window portion 15 penetrating in the thickness direction thereof is formed. Therefore, if the color measuring device 50 of the present embodiment is used, even if the color measuring target 12 has a relatively small size, the color difference from the visual tint is small, and the color can be measured more accurately. ..
  • the color measuring device of the present invention is irradiated from a single direction in addition to the so-called diffused lighting type color measuring device 50 that measures the surface of the color measuring target 12 using diffused illumination light as shown in FIG. It may be a so-called unidirectional illumination type color measuring device that measures color using light.
  • FIG. 4A and 4B are schematic views illustrating a usage mode of the color measuring device of the present invention.
  • the color measurement target 22 is arranged on the front surface of the window portion 25 of the mask member 30 provided in the color measurement device 60 (FIG. 4A). ). Then, the holder 32 abuts and holds the color measurement target 22 against the mask member 30 (FIG. 4B). In this state, the color measuring device 60 is operated, and the surface of the color measuring target 22 is irradiated with the irradiation light through the window portion 25. Next, the surface of the color measurement target 22 can be measured by receiving and analyzing the generated reflected light in the color measuring device 60.
  • the color measuring device 60 includes the above-mentioned transparent or translucent mask member 30 in which the window portion 25 penetrating in the thickness direction thereof is formed, the color measuring device 60 can be used. Even for the color measurement target 22 having a relatively small size, the color difference from the visual tint is small, and the color can be measured more accurately. Further, the mask members 30 having different maximum opening diameters of the window portion 25 can be appropriately selected and attached according to the size of the color measurement target 22 and the like, and the color can be measured. Therefore, according to the color measuring device and the color measuring method of the present embodiment, it is possible to flexibly and accurately measure the color according to the size and shape of the surface of the color measuring target or the color measuring target itself.
  • the color measuring device is not limited to the horizontal stationary type color measuring device as shown in FIGS. 4A and 4B, and may be any device provided with the above-mentioned mask member.
  • it may be a stationary type color measuring device in which a color measuring object is placed on the upper surface thereof to measure a color.
  • it may be a portable (handy type) color measuring device.
  • Test piece 1 100 parts of soft transparent polyvinyl chloride (PVC), 0.222 parts of white pigment 1 (trade name "Discol EP-4050", manufactured by Dainichiseika Kogyo Co., Ltd.), 1 part of black pigment (trade name "Discol P-4710") , Dainichiseika Kogyo Co., Ltd.) 0.00046 parts, green pigment 1 (trade name "Discol EP-4514", manufactured by Dainichiseika Kogyo Co., Ltd.) 0.0014 parts, and yellow pigment 1 (trade name "Discol”) EP-4440 ”, manufactured by Dainichiseika Kogyo Co., Ltd.) 0.0218 parts were added and mixed, and then press-molded to obtain a press sheet having a thickness of about 2 mm. The obtained press sheet was cut to an appropriate size to obtain a translucent test piece 1 colored in yellowish green.
  • PVC soft transparent polyvinyl chloride
  • white pigment 1 trade name "Discol EP-4050" manufactured by Dainichis
  • Green pigment 1 product name “ "Discor EP-4514”, manufactured by Dainichiseika Kogyo Co., Ltd.-Yellow pigment 1: product name "Discor EP-4440", manufactured by Dainichiseika Kogyo Co., Ltd.-Red pigment 1: product name "Discor P-4120", large Made by Nisseika Kogyo Co., Ltd.
  • Yellow pigment 2 Product name “Discor P-4443”, manufactured by Dainichiseika Kogyo Co., Ltd.
  • Brown pigment 1 Product name “Discol P-4820”, manufactured by Dainichiseika Kogyo Co., Ltd.
  • a color measuring device provided with a mask member according to an embodiment of the present invention, even a relatively small color measuring object has a small color difference from the visual tint and can measure colors more accurately. Can be done.

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

Abstract

La présente invention concerne un élément de masque pour un dispositif de mesure de couleur, l'élément de masque ayant une petite différence de couleur par rapport à une teinte de couleur visuellement perçue, le dispositif de mesure de couleur pouvant mesurer des couleurs plus précisément même si la cible de mesure de couleur est constituée d'un matériau relativement petit, épais et translucide ; un dispositif de mesure de couleur pourvu de l'élément de masque ; et un procédé de mesure de couleur qui utilise le dispositif de mesure de couleur. L'élément de masque (10) pour le dispositif de mesure de couleur se trouve entre la cible de mesure de couleur et une source de lumière, une partie fenêtre (5) qui pénètre physiquement dans la direction de l'épaisseur formée à l'intérieur de cette dernière, l'élément de masque (10) étant disposé sur une position qui vient en butée sur la cible de mesure de couleur, la cible de mesure étant disposée sur une position qui ferme la partie fenêtre (5) et la couleur de la cible de mesure étant mesurée par le dispositif de mesure de couleur. La partie fenêtre (5) est transparente ou translucide, et le diamètre d'ouverture maximal D1 de la partie fenêtre (5) est inférieur ou égal à 20 mm et inférieur à la dimension de la cible de mesure. L'invention concerne le dispositif de mesure de couleur dans lequel est disposé l'élément de masque (10) entre la cible de mesure de couleur et la source de lumière et sur une position en butée sur la cible de mesure de couleur ; et un procédé de mesure de couleur comprenant une étape de mesure de la couleur d'une cible de mesure à l'aide du dispositif de mesure de couleur.
PCT/JP2021/030277 2020-09-04 2021-08-19 Élément de masque pour dispositif de mesure de couleur, dispositif de mesure de couleur et procédé de mesure de couleur WO2022050055A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020149011A JP6921286B1 (ja) 2020-09-04 2020-09-04 測色装置用のマスク部材、測色装置、及び測色方法
JP2020-149011 2020-09-04

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WO2022050055A1 true WO2022050055A1 (fr) 2022-03-10

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TW (1) TW202215012A (fr)
WO (1) WO2022050055A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60222731A (ja) * 1984-04-18 1985-11-07 Sumitomo Chem Co Ltd 紫外螢光物体測色装置
JPS6129724A (ja) * 1984-07-20 1986-02-10 Sumitomo Chem Co Ltd 測色方法
JPH11337485A (ja) * 1998-05-28 1999-12-10 Kett Electric Lab 粉粒体用白度計のセンサー部
JP2002267600A (ja) * 2001-03-12 2002-09-18 Minolta Co Ltd 反射特性測定装置
US20080204705A1 (en) * 2007-02-23 2008-08-28 Yan Liu Apparatus and method for color measurement and color grading of diamonds, gemstones and the like
JP2009121942A (ja) * 2007-11-15 2009-06-04 Nisshinbo Ind Inc 微小測色における被測定物の取付具
JP2015206638A (ja) * 2014-04-18 2015-11-19 コニカミノルタ株式会社 測色装置、マスク部材および測色システム
JP2015212641A (ja) * 2014-05-01 2015-11-26 コニカミノルタ株式会社 携帯式の測色装置および携帯式の測色システム
JP2015215239A (ja) * 2014-05-12 2015-12-03 コニカミノルタ株式会社 携帯式の測色システム、およびマスク部材

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60222731A (ja) * 1984-04-18 1985-11-07 Sumitomo Chem Co Ltd 紫外螢光物体測色装置
JPS6129724A (ja) * 1984-07-20 1986-02-10 Sumitomo Chem Co Ltd 測色方法
JPH11337485A (ja) * 1998-05-28 1999-12-10 Kett Electric Lab 粉粒体用白度計のセンサー部
JP2002267600A (ja) * 2001-03-12 2002-09-18 Minolta Co Ltd 反射特性測定装置
US20080204705A1 (en) * 2007-02-23 2008-08-28 Yan Liu Apparatus and method for color measurement and color grading of diamonds, gemstones and the like
JP2009121942A (ja) * 2007-11-15 2009-06-04 Nisshinbo Ind Inc 微小測色における被測定物の取付具
JP2015206638A (ja) * 2014-04-18 2015-11-19 コニカミノルタ株式会社 測色装置、マスク部材および測色システム
JP2015212641A (ja) * 2014-05-01 2015-11-26 コニカミノルタ株式会社 携帯式の測色装置および携帯式の測色システム
JP2015215239A (ja) * 2014-05-12 2015-12-03 コニカミノルタ株式会社 携帯式の測色システム、およびマスク部材

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TW202215012A (zh) 2022-04-16
JP6921286B1 (ja) 2021-08-18
JP2022043634A (ja) 2022-03-16

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