【発明の詳細な説明】 ［利用分野］ 本発明は、積分球式の測色器を用いた測色方法に関する
ものである。TECHNICAL FIELD The present invention relates to a colorimetric method using an integrating sphere type colorimeter.
［従来技術及びその問題点］ 積分球式の測色では、あらゆる方向からの被測色資料
（以下、単に試料と言う）を照明し、この試料からの反
射光を測定するものであるから、試料が布地のような表
面に凹凸のある生地であっても、よく照明され、陰によ
る測定値の変化が少なく安定した結果が得られ、又、測
定方向が１つの方向であるために目で色を見る場合に最
も近い条件で測定できる利点がある。[Prior Art and its Problems] In the sphere-type color measurement, a color measurement material (hereinafter, simply referred to as a sample) from all directions is illuminated and reflected light from the sample is measured. Even if the sample is a cloth with uneven surface such as cloth, it is well illuminated, the measured value does not change much due to the shadow, and stable results are obtained. There is an advantage that the color can be measured under the closest condition.
ところが、この形式の測色器によっても、カーペット、
毛布のように起毛させたものや、バラ毛状の繊維製品の
場合には、表面の凹凸が過大で、正確な測定ができな
い。However, even with this type of colorimeter, the carpet,
In the case of a raised fabric such as a blanket or a loose fiber product, the unevenness of the surface is too large for accurate measurement.
これは、上記した形式の測定の場合、第２図の如く、積
分球（１）に形成した開口窓（２）に試料を押し当てて
も、試料生地表面から延びる毛足が不揃いに積分球
（１）内に露出することとなり、照射光による陰の部分
が生じ、この陰の出力によって測定値が大幅に変化する
からである。This is because, in the case of the above-mentioned type of measurement, even if the sample is pressed against the opening window (2) formed in the integrating sphere (1) as shown in FIG. This is because it is exposed in (1), and a shadow portion is generated by the irradiation light, and the output value of this shadow significantly changes the measured value.
［技術的課題］ 本発明は、このような積分球を用いた測色において、毛
羽立った試料のように表面の凹凸が著しい試料を正確に
測色できるようにするため、毛足による影が生じないよ
うにすると供に、積分球式測色器を大幅に変更すること
なくこの為の対策が可能となるようにすることをその課
題とする。[Technical Problem] According to the present invention, in color measurement using such an integrating sphere, since a sample having remarkable surface irregularities, such as a fluffy sample, can be accurately measured, shadows due to hair feet are generated. In addition to avoiding this, the task is to be able to take measures for this without significantly changing the integrating sphere colorimeter.
［手段］ 上記課題を解決するための本発明方法の技術的手段は、
『測色用の開口窓を透明ガラス板によって外面側から閉
塞した積分球式測色器を用いて測色する方法において、
前記ガラス板は表裏平滑表面に構成されると共にその厚
さを1mm以下で且つ測色時の試料保持圧に耐える程度の
厚さに設定し、前記ガラス板の表面に試料表面をその繊
維による凹凸が消失されるように圧接させ、積分球式測
色器から得られる測色信号をコンピュータ（Ｃ）によっ
て演算しその演算結果を表示装置に表示し、この際ガラ
ス板の表面からの反射量に対応する信号を前記コンピュ
ータ（Ｃ）によってカットするようにした』ことであ
る。[Means] The technical means of the method of the present invention for solving the above-mentioned problems are:
"In the method of color measurement using an integrating sphere type colorimeter in which an opening window for color measurement is closed from the outside by a transparent glass plate,
The glass plate is configured on the front and back smooth surfaces and the thickness is set to 1 mm or less and set to a thickness that can withstand the sample holding pressure during color measurement, and the sample surface is uneven on the surface of the glass plate due to the fibers. Is pressed so as to disappear, the colorimetric signal obtained from the integrating sphere colorimeter is calculated by the computer (C), and the calculation result is displayed on the display device. At this time, the amount of reflection from the surface of the glass plate is displayed. The corresponding signal is cut by the computer (C) ”.
［作用］ 上記技術的手段は次のように作用する。[Operation] The above technical means operates as follows.
ガラス板は、積分球式測色器の測色用の開口窓を外側か
ら閉塞するように器体表面に添設される。このとき、接
着剤等によって添設固定するか、場合によっては、単に
添えるだけの態様で添設される。The glass plate is attached to the surface of the body so as to close the colorimetric aperture window of the integrating sphere colorimeter from the outside. At this time, it is attached and fixed with an adhesive or the like, or depending on the case, it is attached in a mode of simply attaching.
測色に際しては、前記ガラス板に試料を圧接させて試料
表面の毛足がガラス板により生地側に押え付けられて、
試料表面の著しい凹凸が消失した、平滑化された表面状
態となる。At the time of color measurement, the sample is pressed against the glass plate and the fluff on the sample surface is pressed against the fabric side by the glass plate,
A smooth surface state is obtained in which the remarkable irregularities on the sample surface have disappeared.
従って、照射光がガラス板を介して試料表面に当てられ
たとき、この試料表面に影が生じなくなり、試料表面か
らは影による影響のない反射光が得られることとなる。Therefore, when the irradiation light is applied to the sample surface through the glass plate, no shadow is generated on the sample surface, and reflected light that is not affected by the shadow is obtained from the sample surface.
特に、ガラス板の厚さを、1mm以下で且つ測色時の試料
保持圧に耐える程度の厚さに設定していることから、ガ
ラス板を介して測色した値とガラス板を介さないで試料
を直接測色した値との間の差異が少なくなる。ちなみ
に、ガラス板の厚さが1mmを越えて2mm程度以上になると
前記差異がかなり認められるものとなる。In particular, since the thickness of the glass plate is set to 1 mm or less and to the extent that it can withstand the sample holding pressure during color measurement, the value measured with the glass plate and the glass plate should not be used. The difference between the colorimetric value of the sample and the colorimetric value is reduced. By the way, when the thickness of the glass plate exceeds 1 mm and becomes about 2 mm or more, the above-mentioned difference is considerably recognized.
また、上記条件で測定された測色信号はコンピュータ
（Ｃ）によって演算して表示装置に表示するが、このと
きに、前記ガラス表面からの反射量に対応する信号を前
記コンピュータ（Ｃ）によってカットされて試料表面か
らの測色信号の演算値のみが表示される。The colorimetric signal measured under the above conditions is calculated by the computer (C) and displayed on the display device. At this time, the signal corresponding to the amount of reflection from the glass surface is cut by the computer (C). Then, only the calculated value of the colorimetric signal from the sample surface is displayed.
［効果］ 本発明は次の特有の効果を有する。[Effect] The present invention has the following unique effects.
試料表面が毛羽立ったものであっても、これがガラス板
によって平滑化されて、照射光による影が生じないか
ら、この影による測定値の変動が少なくなり、凹凸の少
ない試料に直接照射光を当てた場合と同様な正確な測定
ができる。Even if the sample surface is fluffy, it will be smoothed by the glass plate and no shadow will be generated by the irradiation light, so the fluctuation of the measured value due to this shadow will be small, and the irradiation light will be directly applied to the sample with less unevenness. The same accurate measurement as in the case of
特に、ガラス板の厚さを所定の範囲に設定したからガラ
ス板を介して測定した測色値と、試料を直接測色した値
との差異が少ないものとなり、測色精度が確保できる。
又、ガラス板の場合、温度条件の変化よる歪みが生じに
くいことからこの点でも測色精度の安定化が図れるもの
となる。In particular, since the thickness of the glass plate is set within a predetermined range, the difference between the colorimetric value measured through the glass plate and the value obtained by directly measuring the color of the sample is small, and colorimetric accuracy can be ensured.
Further, in the case of a glass plate, distortion due to a change in temperature conditions is unlikely to occur, so that the color measurement accuracy can be stabilized in this respect as well.
測色用の開口窓に透明ガラス板を添設するだけであるか
ら、積分球式測色器自体を変更する必要がない。Since only a transparent glass plate is attached to the opening window for color measurement, there is no need to change the integrating sphere colorimeter itself.
コンピュータ（Ｃ）によって演算されて表示装置に表示
される測色演算値は試料表面からの測色信号の演算値の
みとなるから、この表示値による測色値の判定が容易で
且間違いがない。Since the colorimetric calculation value calculated by the computer (C) and displayed on the display device is only the calculation value of the colorimetric signal from the sample surface, it is easy and correct to judge the colorimetric value from this display value. .
［実施例］ 以下、本発明の実施例を第１図に基づいて説明する。[Embodiment] An embodiment of the present invention will be described below with reference to FIG.
この実施例では、ガラス板（４）は積分球式の測色器の
積分球（１）の開口窓（２）を外部から閉塞するように
設けられ、器体表面に添設される。In this embodiment, the glass plate (4) is provided so as to close the opening window (2) of the integrating sphere (1) of the integrating sphere type colorimeter from the outside and is attached to the surface of the body.
開口窓（２）を形成した器体表面には回動可能な押圧手
段が設けられ、所定の圧力でパッド（５）をガラス板
（４）の表面側に押しつけるように構成されている。A rotatable pressing means is provided on the surface of the body in which the opening window (2) is formed, and the pad (5) is pressed against the surface side of the glass plate (4) with a predetermined pressure.
押圧手段を回動させて開口窓（２）から外れた位置に一
旦移動させ、開口窓（２）に設けたガラス板（４）に試
料（３）を添わせた後、押圧手段をもとに戻すとパッド
（５）により試料（３）がガラス板（４）側に押し当て
られた状態となり、この状態で測色装置を動作させれ
ば、所望の測定が行える。The pressing means is rotated to once move to a position outside the opening window (2), and the sample (3) is added to the glass plate (4) provided in the opening window (2). Then, the sample (3) is pressed against the glass plate (4) by the pad (5), and the desired measurement can be performed by operating the color measuring device in this state.
尚、この実施例のものでは、測定装置に内蔵される分光
器（Ａ）内のセンサーからの出力を演算してコンピュー
タ（Ｃ）の画面上にグラフとして表示するようにしてあ
り、測定結果が分かり易い態様で表示できる。In this embodiment, the output from the sensor in the spectroscope (A) built into the measuring device is calculated and displayed as a graph on the screen of the computer (C), and the measurement result is It can be displayed in an easy-to-understand manner.
ここで、前記分光器（Ａ）内のセンサーからの出力中に
は、ガラス板（４）の表面からの反射光も含まれること
となるが、この反射光は何れのスペクトル光に於いても
一定であるから、コンピュータ（Ｃ）による演算の際、
これをカットして画面上に表示すれば良く、これにより
試料表面からの分光反射率のみが測定でき、画面上に表
示できる。Here, in the output from the sensor in the spectroscope (A), reflected light from the surface of the glass plate (4) is also included, but this reflected light is included in any spectral light. Since it is constant, when calculating by the computer (C),
It suffices to cut this and display it on the screen, whereby only the spectral reflectance from the sample surface can be measured and displayed on the screen.
尚、上記ガラス板（４）からの反射光成分のカット、即
ち、０点調整は公知の他の方法を採用することも可能で
ある。Incidentally, it is possible to adopt another known method for cutting the reflected light component from the glass plate (4), that is, for adjusting the zero point.
又、上記のように、測色器の器体表面にガラス板（４）
を添設すると、ガラス板（４）を使用した場合と、これ
を用いない場合とでは、測色器の試料取付け用の開口窓
（２）に於ける試料（３）と積分球（１）との関係位置
が相違することとなるが、このガラス板（４）の影響に
よる測定値の差異を最小にするには、積分球（１）と試
料（３）との距離、つまり、ガラス板（４）の厚さ
（ｔ）を1.0mm以内にすることが好ましく、更に好まし
くは0.3mm以内に設定するとよい。Further, as described above, the glass plate (4) is provided on the surface of the body of the colorimeter.
When the glass plate (4) is used and the glass plate (4) is not used, the sample (3) and the integrating sphere (1) in the opening window (2) for mounting the sample of the colorimeter are However, in order to minimize the difference in the measured values due to the influence of the glass plate (4), the distance between the integrating sphere (1) and the sample (3), that is, the glass plate The thickness (t) of (4) is preferably 1.0 mm or less, more preferably 0.3 mm or less.
このことを測定結果を用いて明らかにする。色差の顕著
に表われる「Black」「Navy」「Brown」の三色について
４種類の厚さのガラス板を用いて測定した場合の色差
（DE）は以下のとおりである。This will be clarified using the measurement results. The color difference (DE) of the three colors “Black”, “Navy”, and “Brown” in which the color difference is remarkably observed when measured using glass plates of four types of thickness is as follows.
なお、この色差（DE）は、ガラス板なしで測定した染色
物を標準（分光立体角反射率）として、ガラス板（４）
を取り付けて同じ染色物を測色し、得られた分光立体角
反射率との差を色差計算して求めた値である。This color difference (DE) was measured using a glass plate (4) with the dyed product measured without the glass plate as the standard (spectral solid angle reflectance).
Is the value obtained by measuring the color of the same dyed product, and calculating the color difference from the obtained spectral solid angle reflectance.
NBS単位と感覚的な色差の大きさとの関係から、以上の
結果を評価すれば、ガラス板（４）の厚さは1mm以下に
おいて実用性があり、0.3mm以下の場合に差がわずかに
認められる程度となって特に有効であることが判明す
る。つまり、ガラス板（４）の板厚についての上記した
値の妥当性がこれによって明らかとなる。 Evaluating the above results from the relationship between the NBS unit and the size of the sensual color difference, the glass plate (4) has a practical thickness of 1 mm or less, and a slight difference is recognized when it is 0.3 mm or less. It is proved to be particularly effective when it is achieved. In other words, the validity of the above-mentioned value for the thickness of the glass plate (4) becomes clear by this.
第１図は本発明方法の実施例の説明図、第２図は従来例
の説明図であり、図中、 （１）……積分球、（２）……開口窓 （３）……試料、（４）……ガラス板 （５）……パッドFIG. 1 is an explanatory view of an embodiment of the method of the present invention, and FIG. 2 is an explanatory view of a conventional example, in which (1) ... integrating sphere, (2) ... opening window (3) ... sample. , (4) …… Glass plate (5) …… Pad
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59151513AJPH0781912B2 (en) | 1984-07-20 | 1984-07-20 | Color measurement method |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59151513AJPH0781912B2 (en) | 1984-07-20 | 1984-07-20 | Color measurement method |
| Publication Number | Publication Date |
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| JPS6129724A JPS6129724A (en) | 1986-02-10 |
| JPH0781912B2true JPH0781912B2 (en) | 1995-09-06 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59151513AExpired - Fee RelatedJPH0781912B2 (en) | 1984-07-20 | 1984-07-20 | Color measurement method |
| Country | Link |
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| JP (1) | JPH0781912B2 (en) |
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