JPH11218446A - Colorimetric apparatus - Google Patents
Colorimetric apparatusInfo
- Publication number
- JPH11218446A JPH11218446A JP10322719A JP32271998A JPH11218446A JP H11218446 A JPH11218446 A JP H11218446A JP 10322719 A JP10322719 A JP 10322719A JP 32271998 A JP32271998 A JP 32271998A JP H11218446 A JPH11218446 A JP H11218446A
- Authority
- JP
- Japan
- Prior art keywords
- colorimetric
- light
- skin
- measuring head
- reflected light
- 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.)
- Granted
Links
Landscapes
- Spectrometry And Color Measurement (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、測色対象物に当接
させる測定ヘッドが小型軽量化されており、特に皮膚の
測色に適した測色装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colorimetric device suitable for colorimetric measurement of a skin, in which a measuring head to be brought into contact with a colorimetric object is small and lightweight.
【０００２】[0002]
【従来の技術】測色用分光光度計や光電色彩計等の測色
装置は、一般に、ＪＩＳ Ｚ ８７２２［物体色−測定
方法］の規格に準拠して作製されており、その照明用光
源としては、太陽の北側昼光、標準光源（Ｃ、Ｄ65等）
あるいは人工光源である常用光源（Ｄ55、Ｄ50等）が使
用され、特に、常用光源としてハロゲンランプ、キセノ
ンランプ等の白色光源が広く使用されている。また、照
明用光源が組み込まれた測定ヘッドには積分球も設けら
れ、光源から発せられた光が積分球の内壁面で拡散反射
され、積分球の底面の開口部から測色対象物の測色部位
が拡散照明されるようにしている。2. Description of the Related Art In general, colorimetric devices such as a colorimetric spectrophotometer and a photoelectric colorimeter are manufactured in accordance with the standard of JIS Z 8722 [object color-method of measurement]. Is the daylight on the north side of the sun, standard light source (C, D65, etc.)
Alternatively, an ordinary light source (D55, D50, etc.) which is an artificial light source is used, and in particular, a white light source such as a halogen lamp or a xenon lamp is widely used as the ordinary light source. An integrating sphere is also provided on the measuring head incorporating the illumination light source, and the light emitted from the light source is diffusely reflected on the inner wall surface of the integrating sphere, and the colorimetric object is measured from the opening at the bottom of the integrating sphere. The color part is made to be diffusely illuminated.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
測色装置では、測定ヘッド内にキセノンランプ等の白色
光源が設けられ、さらには積分球も設けられているの
で、測定ヘッドが相当に嵩高くなっている。そのため、
顔等のように凹凸が多くて平坦部分が少なく、狭い範囲
の測色を目的とする場合には測色が困難であった。However, in the conventional colorimeter, a white light source such as a xenon lamp is provided in the measuring head, and an integrating sphere is also provided, so that the measuring head is considerably bulky. Has become. for that reason,
It is difficult to measure the color when the purpose is to measure the color in a narrow range, such as a face, which has many irregularities and few flat portions.
【０００４】また、キセノンランプ等の白色光源や積分
球が設けられているために測定ヘッドを軽量化すること
もできないので、測定ヘッドを片手で保持し、任意の測
色対象物の測色部位に最適の押圧力で当接させることも
困難であった。そのため、皮膚の測色時には、測定ヘッ
ドを過度の押圧力で皮膚に押しつけ、そのために血流が
滞り、正常な状態での皮膚の測色をすることができない
という問題もあった。[0004] Further, since a white light source such as a xenon lamp or an integrating sphere is provided, it is not possible to reduce the weight of the measuring head. It was also difficult to make contact with the optimum pressing force. Therefore, when measuring the color of the skin, there is a problem that the measuring head is pressed against the skin with an excessive pressing force, so that the blood flow is stagnated and the skin cannot be measured in a normal state.
【０００５】さらに、キセノンランプは電流効率が低い
ためにランニングコストが高くなり、また、寿命が比較
的短いために、メンテナンスにもコストがかかった。[0005] Furthermore, the running cost of the xenon lamp is high due to its low current efficiency, and its maintenance is also expensive because its life is relatively short.
【０００６】本発明は以上のような従来技術の課題に対
し、耐久性があり、メンテナンスが容易で、小型軽量化
を図ることができ、顔をはじめとする皮膚の測色にも簡
便に使用できる測色装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention addresses the problems of the prior art as described above, and is durable, easy to maintain, small in size and light in weight, and can be easily used for colorimetry of the skin including the face. It is an object of the present invention to provide a colorimetric device that can perform the measurement.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、照明用の
光を測色対象物に照射する照射手段として、従来のハロ
ゲンランプやキセノンランプ等の白色光源に代えて、白
色の発光ダイオード（以下、ＬＥＤと略する）又はスー
パールミネッセントダイオード（ＳＬＤ）等のルミネッ
セントダイオードを使用することにより上記の目的が達
成できることを見出した。SUMMARY OF THE INVENTION The present inventors have developed a white light emitting diode instead of a conventional white light source, such as a halogen lamp or a xenon lamp, as an irradiating means for irradiating illumination light onto a colorimetric object. It has been found that the above object can be achieved by using a luminescent diode such as an LED (hereinafter abbreviated as LED) or a super luminescent diode (SLD).
【０００８】即ち、本発明は、測色対象物に照射する光
の光源として、白色のルミネッセントダイオードを有す
る照射手段、測色対象物からの反射光を受光し、該反射
光の受光強度を出力する受光手段、及び反射光の受光強
度に基づいて測色値を求める演算手段からなる測色装置
を提供する。That is, the present invention provides an illuminating means having a white luminescent diode as a light source for irradiating a colorimetric object, receiving reflected light from the colorimetric object, and receiving light intensity of the reflected light. And a colorimetric device comprising: a light receiving means for outputting a colorimetric value; and a calculating means for obtaining a colorimetric value based on the received light intensity of reflected light.
【０００９】また、本発明は、皮膚に本発明の測色装置
を当接させ、照射手段から皮膚に白色光を照射し、照射
した光の皮膚からの反射光を受光手段で受光し、その受
光強度に基づいて測色値を求める測色方法を提供する。Further, according to the present invention, the colorimetric device of the present invention is brought into contact with the skin, the skin is irradiated with white light from the irradiation means, and the reflected light from the skin is received by the light receiving means. Provided is a colorimetric method for obtaining a colorimetric value based on received light intensity.
【００１０】[0010]
【発明の実施の形態】以下、本発明を図面に基づいて詳
細に説明する。なお、各図中、同一符号は、同一又は同
等の構成要素を表している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. In each drawing, the same reference numerals represent the same or equivalent components.
【００１１】図２は、本発明の一実施例の測色装置１の
ブロック図である。この測色装置１は、測定ヘッド１０
と演算手段３０とからなっている。また、図１は測色装
置１の測定ヘッド１０の概略断面図（同図（ａ））及び
底面図（同図（ｂ））である。FIG. 2 is a block diagram of the colorimetric device 1 according to one embodiment of the present invention. The colorimeter 1 includes a measuring head 10
And arithmetic means 30. FIG. 1 is a schematic sectional view (FIG. 1A) and a bottom view (FIG. 1B) of a measuring head 10 of the color measuring device 1.
【００１２】測定ヘッド１０は、測色対象物Ｓに照射す
る光の光源として、白色光を発する発光ダイオード（Ｌ
ＥＤ）を有しており、これらの設置位置は、図１（ｂ）
に示したように、それぞれ正三角形の頂点となってい
る。この正三角形の一辺の長さは、細部の測色の点か
ら、４０ｍｍ以下とすることが好ましく、特に、５〜２
０ｍｍとすることが好ましい。また、これらＬＥＤがな
す正三角形の中心には、受光手段として一組のフォトダ
イオード１１が設けられている。The measuring head 10 includes a light emitting diode (L) that emits white light as a light source for irradiating the colorimetric object S.
ED), and these installation positions are as shown in FIG.
As shown in the above, each is a vertex of an equilateral triangle. The length of one side of this equilateral triangle is preferably set to 40 mm or less from the viewpoint of colorimetry of details, and particularly, 5 to 2 mm.
Preferably, it is 0 mm. At the center of the equilateral triangle formed by these LEDs, a set of photodiodes 11 is provided as light receiving means.
【００１３】各ＬＥＤは測色部位Ｓ1に対する設置角度
を垂直から水平まで適宜変えることができるようになっ
ており、これによりＬＥＤから照射された光の測色部位
Ｓ1への入射角を０°から９０°近くまで変えられるよ
うにしている。測色部位Ｓ１に対する入射角が小さすぎ
ると、フォトダイオード１１が測色対象物Ｓからの光源
の直接表面反射光を受光しやすくなり、反対に大きすぎ
るとＬＥＤからの直接光又は測定ヘッド１０内の反射光
を受光しやすくなるので、通常は測色部位Ｓ１に対する
入射角を３０°〜６０°とすることが好ましく、入射角
４５°で受光角０°とすることがより好ましい。[0013] The incident angle of each LED the installation angle for the colorimetric region S 1 from the vertical and so that it can be varied appropriately to the horizontal, thereby to colorimetric site S 1 of the light emitted from the LED 0 The angle can be changed from ° to nearly 90 °. When the angle of incidence with respect to the colorimetric region S 1 is too small, it becomes easy to receive the direct surface reflected light of the light source from the color object S photodiode 11 is measured, direct light or measurement head 10 from the LED is too large in the opposite since easily receives the reflected light of the inner, generally it is preferable that the 30 ° to 60 ° angle of incidence with respect to the colorimetric site S 1, and more preferably in a light receiving angle of 0 ° at an incident angle of 45 °.
【００１４】一組のフォトダイオード１１は、各々の前
面に赤色光（Ｒ）、緑色光（Ｇ）または青色光（Ｂ）を
通すバンドパスフィルター１６R、１６G、１６Bが備え
られた合計３個のフォトダイオード１１からなってい
る。また、ＬＥＤとフォトダイオード１１との間には遮
光筒１２が設けられている。遮光筒１２の先端又は中程
には、必要に応じてレンズが設けられる。ＬＥＤ及びフ
ォトダイオード１１は、外筒１３で囲まれている。A set of photodiodes 11 is provided with a band-pass filter 16 R , 16 G , 16 B that passes red light (R), green light (G) or blue light (B) on the front surface. It consists of three photodiodes 11. Further, a light-shielding tube 12 is provided between the LED and the photodiode 11. A lens is provided at the front end or the middle of the light shielding tube 12 as necessary. The LED and the photodiode 11 are surrounded by an outer cylinder 13.
【００１５】外筒１３は、その底部に円形の開口部１４
を有し、測色時に開口部１４の外縁が測色部位Ｓ1を囲
むように測色対象物Ｓに接触し、測色部位Ｓ1及びフォ
トダイオード１１を外部散乱光から遮蔽する。この場
合、開口部１４の直径は、細部の測色の点から３０ｍｍ
以下とすることが好ましく、特に、３〜２０ｍｍとする
ことが好ましい。The outer cylinder 13 has a circular opening 14 at its bottom.
Has a outer edge of the opening 14 to the colorimetric time is in contact with the color measurement object S so as to surround the colorimetric site S 1, to shield the colorimetric site S 1 and the photodiode 11 from the external scattered light. In this case, the diameter of the opening 14 is 30 mm from the point of detail colorimetry.
It is preferably set to the following, and particularly preferably set to 3 to 20 mm.
【００１６】また、測色対象物Ｓによっては、外筒１３
の接触により測色部位Ｓ1の温度が変化し、測色値の変
わる場合があることから、測色対象物Ｓと接触する外筒
１３端部の構成材料としては、外筒１３が測色対象物Ｓ
に接触しても測色部位Ｓ1の温度ができるだけ変わらな
いような材料、例えば、熱伝導率０．００１〜９９Ｗｍ
-1Ｋ-1、より好ましくは０．００１〜１０Ｗｍ-1Ｋ-1の
有機材料を使用することが好ましい。Further, depending on the object S to be measured, the outer cylinder 13 may be used.
Temperature of the colorimetric region S 1 is changed by contact with, since there may vary the colorimetric values, as the material of the outer tube 13 ends in contact with the colorimetric object S, the outer cylinder 13 is colorimetry Object S
Materials, such as the temperature of the colorimetric region S 1 is not possible change even in contact with, for example, thermal conductivity 0.001~99Wm
It is preferable to use an organic material of -1 K -1 , more preferably 0.001 to 10 Wm -1 K -1 .
【００１７】一方、演算手段３０は、測色部位Ｓ1に照
射するＬＥＤの発光強度を制御し、また、バンドパスフ
ィルター１６（１６R、１６G、１６B）を通してフォト
ダイオード１１で検出された光強度に基づいて測色値を
求めるものであり、ゲート回路３２、照明回路３１、Ｉ
−Ｖ回路３３R、３３G、３３B 、サンプルホールド回路
３４、減算回路３５R、３５G、３５B、バッファ回路３
６、計算処理回路３７からなっている。Meanwhile, the calculating means 30 controls the light emission intensity of the LED to irradiate the colorimetric site S 1, was also detected by the photo diode 11 through a band-pass filter 16 (16 R, 16 G, 16 B) A colorimetric value is obtained based on the light intensity. The gate circuit 32, the illumination circuit 31,
-V circuit 33 R , 33 G , 33 B , sample hold circuit 34, subtraction circuit 35 R , 35 G , 35 B , buffer circuit 3
6. It comprises a calculation processing circuit 37.
【００１８】ここで、ゲート回路３２は、ＬＥＤの発光
タイミングを制御する回路であり、また、照明回路３１
は、各ＬＥＤに、一定強度の光を発生させる回路であ
る。Here, the gate circuit 32 is a circuit for controlling the light emission timing of the LED.
Is a circuit for generating light of a constant intensity for each LED.
【００１９】赤色光（Ｒ）、緑色光（Ｇ）または青色光
（Ｂ）を通すバンドパスフィルター１６R、１６G、１６
Bが前面に設けられたフォトダイオード１１は、それぞ
れＲ、Ｇ、Ｂの光を受光し、Ｉ−Ｖ回路３３は、フォト
ダイオード１１が出力するＲ、Ｇ、Ｂそれぞれの受光強
度を電流値から電圧値に変換する。サンプルホールド回
路３４は、ＬＥＤの発光時のＲ、Ｇ、Ｂそれぞれの受光
強度をサンプリングして一時保存（ホールド）すると共
に、外部散乱光の受光強度もサンプリングして一時保存
する。そして、減算回路３５R、３５G、３５Bは、サン
プルホールド回路３４に一時保存された、ＬＥＤの発光
時のＲ、Ｇ、Ｂ各色の受光強度と、外部散乱光の受光強
度との差をとり、それにより外部散乱光の影響が除去さ
れたＲ、Ｇ、Ｂ各色の受光強度を出力する。バッファ回
路３６は、こうして求められたＲ、Ｇ、Ｂの出力値が外
部検出器（モニター、コンピュータ等）に取り込まれる
場合に、当該外部検出器による影響が除去された値とな
るように、Ｒ、Ｇ、Ｂを出力する。そして、計算処理回
路３７は、バッファ回路３６からのＲ、Ｇ、Ｂそれぞれ
の出力値と、予め測色対象物Ｓの測色前に白色板から得
たＲ、Ｇ、Ｂそれぞれの出力値とから、Ｒ、Ｇ、Ｂの各
色の光それぞれについて、測色対象物Ｓと白色板との出
力値の比を求め、その比の値からＬ*ａ*ｂ*表色系の値
（即ち、Ｌ*値＝明るさ、ａ*値＝赤み、ｂ*値＝黄色
み）を出力する。Band-pass filters 16 R , 16 G , 16 that pass red light (R), green light (G) or blue light (B)
The photodiode 11 provided with B on the front receives light of R, G, and B, respectively, and the IV circuit 33 calculates the received light intensity of each of R, G, and B output by the photodiode 11 from the current value. Convert to voltage value. The sample hold circuit 34 samples and temporarily stores (holds) the received light intensity of each of R, G, and B when the LED emits light, and also samples and temporarily stores the received light intensity of the external scattered light. Then, the subtracting circuit 35 R, 35 G, 35 B is temporarily stored in the sample-and-hold circuit 34, when the LED light emission of R, G, B and the color of the received light intensity, the difference between the received light intensity of external scattered light Then, the received light intensity of each color of R, G, and B from which the influence of the external scattered light is removed is output. When the output values of R, G, and B obtained in this way are taken into an external detector (monitor, computer, etc.), the buffer circuit 36 sets the R, G, and B values so that the influence of the external detector is removed. , G and B are output. Then, the calculation processing circuit 37 calculates the output values of R, G, and B from the buffer circuit 36 and the output values of R, G, and B obtained from the white plate before the colorimetry of the colorimetric object S in advance. , The ratio between the output values of the colorimetric object S and the white plate is determined for each of the R, G, and B lights, and the value of the L * a * b * color system (that is, L * value = brightness, a * value = redness, b * value = yellowness) are output.
【００２０】この測色装置１を用いて測色対象物Ｓを測
色する場合、まず測定ヘッド１０の外筒１３の底部の開
口部１４を測色部位Ｓ1に合わせ、測定ヘッド１０を測
色対象物Ｓに当接させる。ここで、測定ヘッド１０には
ＬＥＤが内蔵されており、従来の測色装置の測定ヘッド
で使用されていたキセノンランプや積分球が不要となっ
ている。さらに、測定ヘッド１０内に組み込まれている
のはＬＥＤ、バンドパスフィルター１６R、１６G、１６
B、フォトダイオード１１及びこれらを作動させるため
に必要な配線等の付帯部品のみで、これら以外の部品
（例えば、演算手段３０、電源等に関するもの）は測定
ヘッド１０外に設けられている。したがって、この測定
ヘッド１０は、手に持った時の重さが付属コードを含め
ても３０ｇ以下に小型軽量化される。このため、位置合
わせ時あるいは測色時に、測定ヘッド１０を片手で容易
に保持し、任意の測色部位Ｓ1に押圧力を調整しつつ当
接させることができる。よって、例えば皮膚を測色対象
物Ｓとした場合でも、過度に皮膚を圧迫することなく、
血流を滞らせることなく、測色することが可能となる。
なお、押圧力の調整のためには、バネ等を利用した感圧
センサーを測定ヘッド１０に設けてもよい。When the colorimetric object S is measured with the colorimeter 1 , the opening 14 at the bottom of the outer cylinder 13 of the measuring head 10 is first aligned with the colorimetric portion S1, and the measuring head 10 is measured. It is brought into contact with the color object S. Here, the measurement head 10 has a built-in LED, and does not require the xenon lamp or the integrating sphere used in the measurement head of the conventional colorimeter. Further, LEDs and band pass filters 16 R , 16 G , 16
B , only photodiodes 11 and auxiliary components such as wiring necessary for operating them, and other components (for example, those relating to the arithmetic means 30 and the power supply) are provided outside the measuring head 10. Therefore, the measuring head 10 can be reduced in size and weight to 30 g or less even when it is held in a hand, including the attached cord. Therefore, during or colorimetry during alignment, and easily hold the measuring head 10 with one hand, can be brought into contact while adjusting the pressing force to any colorimetric site S 1. Therefore, for example, even when the skin is used as the colorimetric object S, without excessively pressing the skin,
Colorimetry can be performed without blocking blood flow.
In order to adjust the pressing force, a pressure-sensitive sensor using a spring or the like may be provided in the measuring head 10.
【００２１】測定ヘッド１０を測色対象物Ｓに当接させ
るにあたり、測定ヘッド１０と測色対象物Ｓとのなす角
度は９０°とすることが好ましいが、８０°から１００
°とすればよく、測色対象物Ｓが皮膚のように柔軟であ
る場合には、さらに許容角度を広げることができる。な
お、測定ヘッド１０と測色対象物Ｓとのなす角度を検出
するためには、上述の感圧センサーを測定ヘッド１０の
外筒１３端部に少なくとも３個取り付ければよい。即
ち、各感圧センサーにかかる圧力が等しければ測定ヘッ
ド１０と測色対象物Ｓとのなす角度は垂直であり、各感
圧センサーにかかる圧力に差があるほど測定ヘッド１０
は垂直から傾いていることとなる。When the measuring head 10 is brought into contact with the colorimetric object S, the angle formed between the measuring head 10 and the colorimetric object S is preferably 90 °.
In the case where the colorimetric object S is flexible like skin, the allowable angle can be further widened. In order to detect the angle between the measurement head 10 and the colorimetric object S, at least three pressure-sensitive sensors described above may be attached to the end of the outer cylinder 13 of the measurement head 10. That is, if the pressure applied to each pressure-sensitive sensor is equal, the angle between the measuring head 10 and the colorimetric object S is vertical, and the more the pressure applied to each pressure-sensitive sensor is different, the more the measuring head 10
Is tilted from the vertical.
【００２２】また、この測定ヘッド１０においては、測
色部位Ｓ1に合わせる開口部１４の径を３０ｍｍ以下、
より好ましくは３〜２０ｍｍ程度と小さくすることがで
きるので、人の皮膚、特に顔等のように凹凸が多くて平
坦部分が少ない部位も測色対象とすることができる。さ
らに、シミのような色素沈着部分、目元、口元、唇、歯
肉、歯、眼球、頭皮、爪等の狭い範囲の表面色を選択的
に測色することも容易になる。また、素肌でも、ファン
デーション、口紅、アイシャドウ、頬紅等のポイントメ
イクを施した化粧肌でも測定可能である。Further, in the measuring head 10, 30 mm below the diameter of the opening 14 to fit the colorimetric site S 1,
More preferably, the thickness can be reduced to about 3 to 20 mm, so that a portion having a large amount of unevenness and a small number of flat portions, such as a human skin, particularly a face, can be a colorimetric target. Further, it is easy to selectively measure the surface color of a narrow range such as a pigmented portion such as a stain, the area around the eyes, mouth, lips, gums, teeth, eyes, scalp, and nails. In addition, measurement can be performed on bare skin and on makeup skin with point makeup such as foundation, lipstick, eyeshadow, and blusher.
【００２３】測定ヘッド１０を測色対象物Ｓに当接させ
た後は、ＬＥＤを発光させ、測色部位Ｓ1からの反射光
を、Ｒ、Ｇ又はＢのバンドパスフィルター１６R、１
６G、１６Bを通してフォトダイオード１１で受光する。
そしてフォトダイオード１１から出力されたＲ、Ｇ、Ｂ
の強度に基づき、測色部位Ｓ1の三刺激値（Ｘ、Ｙ、
Ｚ）あるいはＬ*ａ*ｂ*表色系の出力値を得る。[0023] After allowed to contact with the measuring head 10 in the color measurement object S, the LED emit light, the reflected light from the colorimetric site S 1, R, band-pass filter 16 G or B R, 1
The light is received by the photodiode 11 through 6 G and 16 B.
R, G, B output from the photodiode 11
Based on the intensity of the tristimulus values of the colorimetric site S 1 (X, Y,
Z) or L * a * b * color system output values are obtained.
【００２４】測色時には、各ＬＥＤを一定強度で発光さ
せてもよいが、図３に示したようにＬＥＤの発光強度を
時分割で変化させてもよい。発光強度の強弱に応じて、
測定深度を考慮した測色を行うことが可能となる。例え
ば、測色部位Ｓ1が皮膚のように半透明で層状構造を有
する場合に、発光強度を弱めた時には測色部位Ｓ1の深
度の浅い部分（例えば、表皮まで）を測色し、発光強度
を強めた時にはより深度の深い部分（例えば、真皮ま
で）を測色することが可能となる。At the time of color measurement, each LED may emit light at a constant intensity, but as shown in FIG. 3, the light emission intensity of the LED may be changed in a time-division manner. Depending on the intensity of light emission,
It is possible to perform colorimetry in consideration of the measurement depth. For example, if the colorimetric region S 1 is has a translucent layered structure as skin, colorimetry shallow portion of the depth of the colorimetric site S 1 (e.g., up to skin) when the weakened emission intensity, emission When the intensity is increased, it is possible to measure the color of a deeper part (for example, up to the dermis).
【００２５】ＬＥＤの発光強度の具体的な値は、ＬＥＤ
と測色部位Ｓ1との距離、測色部位Ｓ1とフォトダイオー
ド１１との距離等に応じて定めることができる。一般に
は、ＬＥＤと測色部位Ｓ1との距離を１ｍｍ〜５０ｍ
ｍ、特に１ｍｍ〜２０ｍｍとし、測色部位Ｓ1とフォト
ダイオード１１との距離を１ｍｍ〜５０ｍｍ、特に１ｍ
ｍ〜２０ｍｍとし、ＬＥＤの発光強度を０．１ｍＷ〜１
０Ｗ、特に１ｍＷ〜１Ｗとすることが好ましい。The specific value of the light emission intensity of the LED is
The distance can be determined according to the distance between the colorimetric part S 1 and the distance between the colorimetric part S 1 and the photodiode 11. Generally, the distance between the LED and the colorimetric site S1 is 1 mm to 50 m.
m, especially 1 mm to 20 mm, and the distance between the colorimetric site S1 and the photodiode 11 is 1 mm to 50 mm, especially 1 m
m to 20 mm, and the emission intensity of the LED is 0.1 mW to 1
0 W, particularly preferably 1 mW to 1 W.
【００２６】本発明は、図１に示した測色装置１以外に
も種々の態様をとることができる。The present invention can take various aspects other than the colorimeter 1 shown in FIG.
【００２７】例えば、図４（ｂ）に示したような、外部
散乱光Ｌの測色部位Ｓ1及び受光手段への回り込みをよ
り確実に防止して、弱い光でも正確な測色を可能とする
ため、図４（ａ）に示すように、外筒１３の測色対象物
Ｓ側の端部と側色部位Ｓ1の外周とを覆う傘状フード１
７を、図１の測定ヘッド１０の外筒１３に着脱自在に取
り付け、外筒１３を二重構造とすることができる。この
場合、測色部位Ｓ1への位置合わせを容易にするため、
必要に応じて、測色部位の位置決め用光源を、照射手段
の光源として設けられているＬＥＤの他に設けてもよ
い。位置決め用光源としては、レーザー、発光ダイオー
ド、スーパールミネッセントダイオード等を使用するこ
とができる。[0027] For example, as shown in FIG. 4 (b), and more reliably prevent the wraparound of the colorimetric site S 1 and the light receiving means of the external scattered light L, and allows an accurate color measurement in weak light to order, 4 (a), the umbrella-shaped hood 1 covering the outer periphery of an end portion of the color measurement object S side and side color region S 1 of the outer cylinder 13
7 can be removably attached to the outer cylinder 13 of the measuring head 10 in FIG. 1 so that the outer cylinder 13 can have a double structure. In this case, to facilitate alignment of the colorimetric site S 1,
If necessary, a light source for positioning the colorimetric portion may be provided in addition to the LED provided as the light source of the irradiation unit. As the positioning light source, a laser, a light emitting diode, a super luminescent diode, or the like can be used.
【００２８】図１の測色ヘッド１０では、ＬＥＤが正三
角形の頂点をなすように配されているが、ＬＥＤの個数
や配置はこれに限られない。例えば、照射ムラを低減す
るため、図５に示すように、測定ヘッド１０内により多
くのＬＥＤを同心円上に配し、その中心にＲ、Ｇ、Ｂ受
光用の一組のフォトダイオード１１を設けてもよい。ま
た、小型軽量化を一層促進するため、図６に示すよう
に、１個のＬＥＤと一組のフォトダイオード１１とを設
けてもよい。後者の場合には、測定ヘッドをより小さく
できるので測定ヘッドの開口部をさらに小さくすること
が可能となるため、より細部の測定を行うことが可能と
なる。また、照射面積が狭くなるので、照射ムラが低減
するという効果も得られる。In the colorimetric head 10 of FIG. 1, the LEDs are arranged so as to form the vertices of an equilateral triangle, but the number and arrangement of the LEDs are not limited to this. For example, in order to reduce irradiation unevenness, as shown in FIG. 5, more LEDs are arranged concentrically in the measuring head 10, and a set of photodiodes 11 for receiving R, G, B light is provided at the center thereof. You may. Further, in order to further reduce the size and weight, one LED and a set of photodiodes 11 may be provided as shown in FIG. In the latter case, the measurement head can be made smaller, so that the opening of the measurement head can be made even smaller, so that more detailed measurement can be performed. Further, since the irradiation area is reduced, an effect of reducing irradiation unevenness can be obtained.
【００２９】ＬＥＤに代えて他のルミネッセントダイオ
ード、例えばスーパールミネッセントダイオード（ＳＬ
Ｄ）を設けてもよい。Instead of an LED, another luminescent diode, for example, a super luminescent diode (SL)
D) may be provided.
【００３０】一方、受光手段として、フォトダイオード
１１に代えて、他のフォトディテクター、例えば、フォ
トトランジスター、フォトダイオードアレイ、ＣＣＤ素
子等を設けることができる。フォトダイオードアレイを
使用することにより、分光反射率曲線を求めることが可
能となる。また、ＣＣＤカメラを設けることにより、平
面の色分布を測定することが可能となる。On the other hand, instead of the photodiode 11, another photodetector, for example, a phototransistor, a photodiode array, a CCD element or the like can be provided as the light receiving means. By using a photodiode array, a spectral reflectance curve can be obtained. Further, by providing a CCD camera, it is possible to measure the color distribution on a plane.
【００３１】さらには、測定ヘッド１０内で、測色部位
Ｓ1からの反射光を、バンドパスフィルター１６R、１６
G、１６Bを通してフォトダイオード１１で受光すること
に代えて、測定ヘッド１０内では測色部位Ｓ1からの反
射光を光ファイバーで受光し、その受光した光を測定ヘ
ッド１０外に導光し、フォトディテクターで検出しても
よい。[0031] Further, in the measuring head 10, the reflected light from the colorimetric site S 1, band-pass filter 16 R, 16
Instead of received by the photodiode 11 through G, 16 B, the reflected light from the colorimetric site S 1 and received by the optical fiber in the measuring head 10, and guides the received light outside the measuring head 10, You may detect with a photodetector.
【００３２】測色精度を向上させるため、必要に応じて
積分球を設けてもよい。In order to improve the colorimetric accuracy, an integrating sphere may be provided as needed.
【００３３】また、本発明の測色装置で出力される測色
値は、ＸＹＺあるいはＬ*ａ*ｂ*表色系の値に限らず、
公知の変換式により、マンセル、Ｌ*Ｃ*ｈ*等の他の表
色系の値にすることもできる。The colorimetric values output by the colorimetric device of the present invention are not limited to XYZ or L * a * b * color system values.
According to a known conversion formula, values of other color systems such as Munsell and L * C * h * can be used.
【００３４】本発明の測色装置の応用例としては、皮膚
を測色対象物Ｓとする場合に、測定ヘッド１０の外筒１
３の皮膚との接触部分の温度を変化させて測色すること
により、温熱負荷あるいは冷却負荷をかけたときの皮膚
の生理学的特徴、例えば、皮膚血管の状態を類推するこ
とができ、それにより肌の活性度あるいは健康度を類推
することが可能となる。As an application example of the colorimetric device of the present invention, when the skin is used as the colorimetric object S, the outer cylinder 1 of the measuring head 10 is used.
By changing the temperature of the part in contact with the skin and measuring the color, the physiological characteristics of the skin when a heating load or a cooling load is applied, for example, the state of the skin blood vessels, can be inferred. It is possible to estimate the activity or the health of the skin.
【００３５】[0035]
【実施例】実施例及び比較例 図６に示した測定ヘッドを有する測色装置を用いて、３
０代の日本人女性５名の頬部を測色対象物とし（試料N
o.１〜５）、それぞれ１０回ずつ測色し、その平均値と
標準偏差ＳＤを求めた。この場合、測定ヘッドの重量は
約２０ｇであった。Examples and Comparative Examples Using a colorimeter having a measuring head shown in FIG.
The cheeks of five Japanese women in their 0s were used as colorimetric objects (Sample N
o.1 to 5), each of which was measured 10 times, and the average value and standard deviation SD were determined. In this case, the weight of the measuring head was about 20 g.
【００３６】一方、比較例として、市販の白色光源を使
用し、ＪＩＳ Ｚ ８７２２［物体色−測定方法］の規
格に準拠して測色する測色器（ミノルタ社製、ＣＭ１０
００）を用いて、実施例と同じ測色対象物（試料No.１
〜５）に対して同様に測色した。この測色器の測定ヘッ
ドの重量は約１ｋｇであった。On the other hand, as a comparative example, a commercially available white light source is used, and a colorimeter (CM10, manufactured by Minolta Co., Ltd.) that performs colorimetry in accordance with the standard of JIS Z 8722 [object color-measuring method].
00), the same colorimetric object as in Example (Sample No. 1)
５5) were similarly measured. The weight of the measuring head of this colorimeter was about 1 kg.
【００３７】測色データを表１に示す。表１から、実施
例と比較例では、ほぼ同様のＬ*ａ*ｂ*が得られている
が、標準偏差については、ａ*の値が比較例よりも実施
例で低いことがわかる。これは、比較例で使用した測色
器では、測色部位となった皮膚表面が強く圧迫されて血
流が滞るが、実施例で使用した測色装置ではそのような
皮膚の圧迫がなかったためと考えられる。このことか
ら、実施例の測色装置によれば、測色対象物の本来の色
を正確に測色できることがわかる。Table 1 shows the colorimetric data. From Table 1, it can be seen that although L * a * b * is almost the same in the example and the comparative example, the value of a * in the standard deviation is lower in the example than in the comparative example. This is because, in the colorimeter used in the comparative example, the skin surface that was the colorimetric site was strongly pressed and the blood flow was stagnated, but the colorimeter used in the example did not have such skin compression. it is conceivable that. From this, it can be seen that according to the colorimetric device of the embodiment, the original color of the colorimetric object can be accurately measured.
【００３８】[0038]
【表１】 実施例 Ｌ* ＳＤ(Ｌ*) ａ* ＳＤ(ａ*) ｂ* ＳＤ(ｂ*) No.1 62.6 0.35 7.5 0.32 18.5 0.36 No.2 66.6 0.31 7.1 0.33 12.7 0.35 No.3 66.8 0.33 6.1 0.35 16.6 0.31 No.4 62.3 0.38 8.8 0.36 14.9 0.33 No.5 63.1 0.34 6.9 0.34 19.1 0.32 比較例 Ｌ* ＳＤ(Ｌ*) ａ* ＳＤ(ａ*) ｂ* ＳＤ(ｂ*) No.1 63.1 0.34 7.2 0.63 18.4 0.33 No.2 66.3 0.32 6.7 0.71 12.5 0.36 No.3 66.5 0.36 5.7 0.79 16.3 0.36 No.4 62.6 0.38 8.8 0.68 15.3 0.31 No.5 63.5 0.35 6.6 0.61 19.5 0.34 [Table 1] Example L * SD (L * ) a * SD (a * ) b * SD (b * ) No.1 62.6 0.35 7.5 0.32 18.5 0.36 No.2 66.6 0.31 7.1 0.33 12.7 0.35 No.3 66.8 0.33 6.1 0.35 16.6 0.31 No.4 62.3 0.38 8.8 0.36 14.9 0.33 No.5 63.1 0.34 6.9 0.34 19.1 0.32 Comparative example L * SD (L * ) a * SD (a * ) b * SD (b * ) No.1 63.1 0.34 7.2 0.63 18.4 0.33 No.2 66.3 0.32 6.7 0.71 12.5 0.36 No.3 66.5 0.36 5.7 0.79 16.3 0.36 No.4 62.6 0.38 8.8 0.68 15.3 0.31 No.5 63.5 0.35 6.6 0.61 19.5 0.34
【００３９】[0039]
【発明の効果】本発明の測色装置あるいは測色方法によ
れば、測定ヘッドに従来使用されていたハロゲンランプ
あるいはキセノンランプに代えてＬＥＤ又はＳＬＤを使
用するので、測定ヘッドの小型軽量化を図ることができ
る。したがって、狭い範囲を測色部位とすることが可能
となり、顔をはじめとする身体の種々の部位の測色を簡
便に行うことができる。また測色装置の耐久性を向上さ
せ、メンテナンスを容易とし、ランニングコストを低下
させることができる。According to the colorimeter or the colorimetric method of the present invention, an LED or SLD is used in place of a halogen lamp or a xenon lamp conventionally used for a measuring head, so that the measuring head can be reduced in size and weight. Can be planned. Therefore, a narrow range can be set as the colorimetric portion, and colorimetry of various portions of the body including the face can be easily performed. In addition, the durability of the colorimeter can be improved, maintenance can be facilitated, and running costs can be reduced.
【図１】 本発明の測色装置の測定ヘッドの概略断面図
（同図（ａ））及び底面図（同図（ｂ））である。FIG. 1 is a schematic cross-sectional view (FIG. 1 (a)) and a bottom view (FIG. 1 (b)) of a measuring head of a color measuring device of the present invention.
【図２】 本発明の測色装置のブロック図である。FIG. 2 is a block diagram of a colorimetric device according to the present invention.
【図３】 測色時のＬＥＤの発光強度と時間の関係図で
ある。FIG. 3 is a diagram showing the relationship between the light emission intensity of an LED and time during color measurement.
【図４】 傘状フードの作用の説明図である。FIG. 4 is an explanatory view of the operation of the umbrella-shaped hood.
【図５】 本発明の他の態様の測色装置の測定ヘッドの
底面図である。FIG. 5 is a bottom view of a measuring head of a colorimetric device according to another embodiment of the present invention.
【図６】 本発明の他の態様の測色装置の測定ヘッドの
底面図である。FIG. 6 is a bottom view of a measuring head of a colorimetric device according to another embodiment of the present invention.
１ 測色装置 １０ 測定ヘッド １１ フォトダイオード １２ 遮光筒 １３ 外筒 １４ 開口部 １６、１６R、１６G、１６B バンドパスフィルター １７ 傘状フード ３０ 演算手段 ＬＥＤ 発光ダイオード Ｓ 測色対象物 Ｓ1 測色部位1 colorimeter 10 measuring head 11 a photodiode 12 the light-shielding tube 13 outer tube 14 opening 16,16 R, 16 G, 16 B band-pass filter 17 umbrella hood 30 calculating unit LED light-emitting diodes S colorimetry object S 1 measured Color part
Claims (5)
白色のルミネッセントダイオードを有する照射手段、測
色対象物からの反射光を受光し、該反射光の受光強度を
出力する受光手段、及び反射光の受光強度に基づいて測
色値を求める演算手段からなる測色装置。1. A light source for irradiating a colorimetric object with:
Irradiation means having a white luminescent diode, light receiving means for receiving reflected light from a colorimetric object and outputting the received light intensity of the reflected light, and calculation for obtaining a colorimetric value based on the received light intensity of the reflected light A colorimeter comprising means.
ダイオードと受光手段としてのフォトディテクターが測
定ヘッド内に設けられ、測定ヘッド外に演算手段と電源
が設けられている請求項１記載の測色装置。2. The colorimeter according to claim 1, wherein a luminescent diode as a light source of the irradiating means and a photodetector as a light receiving means are provided in the measuring head, and a calculating means and a power supply are provided outside the measuring head. apparatus.
時分割で変化する請求項１又は２記載の測色装置。3. The colorimetric device according to claim 1, wherein the light emission intensity of the luminescent diode changes in a time-division manner.
いずれかに記載の測色装置。4. The colorimetric device according to claim 1, wherein the colorimetric target is skin.
せ、照射手段から皮膚に白色光を照射し、照射した光の
皮膚からの反射光を受光手段で受光し、その受光強度に
基づいて測色値を求める測色方法。5. The colorimetric device according to claim 4, which is brought into contact with the skin, irradiates the skin with white light from the irradiating means, and receives the reflected light of the irradiated light from the skin with the light receiving means. A colorimetric method for obtaining a colorimetric value based on
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|---|---|---|---|
| JP32271998A JP3815903B2 (en) | 1997-11-12 | 1998-11-12 | Color measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9-310954 | 1997-11-12 | ||
| JP31095497 | 1997-11-12 | ||
| JP32271998A JP3815903B2 (en) | 1997-11-12 | 1998-11-12 | Color measuring device |
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| Publication Number | Publication Date |
|---|---|
| JPH11218446A true JPH11218446A (en) | 1999-08-10 |
| JP3815903B2 JP3815903B2 (en) | 2006-08-30 |
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| JP7299726B2 (en) * | 2019-03-20 | 2023-06-28 | キヤノン株式会社 | Skin color measuring device and program |
-
1998
- 1998-11-12 JP JP32271998A patent/JP3815903B2/en not_active Expired - Fee Related
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| JP2010515889A (en) * | 2007-01-09 | 2010-05-13 | ウォルフガング ウィンホールド | Object inspection method and inspection apparatus |
| JP2010043932A (en) * | 2008-08-12 | 2010-02-25 | Shofu Inc | Colorimetric apparatus for dentistry |
| JP2010159230A (en) * | 2009-01-09 | 2010-07-22 | Nippon Menaade Keshohin Kk | Judging method of vividness of lip, powder composition and lip cosmetic |
| JP2010273736A (en) * | 2009-05-26 | 2010-12-09 | Mandom Corp | Method of evaluating obviousness of surface reflection of skin |
| JP2012020073A (en) * | 2010-07-16 | 2012-02-02 | Fujitsu Ltd | Device, method, and program for measuring fat thickness |
| JP2013535297A (en) * | 2010-08-13 | 2013-09-12 | ユニリーバー・ナームローゼ・ベンノートシヤープ | Skin or hair condition diagnosis device |
| JP2014016176A (en) * | 2012-07-06 | 2014-01-30 | Muto Kogyo Kk | Photometric device |
| JP2014041115A (en) * | 2012-07-27 | 2014-03-06 | Pola Chem Ind Inc | Colorimetric device, and skin color map having color information obtained by the colorimetric device |
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|---|---|
| JP3815903B2 (en) | 2006-08-30 |
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