JP3964323B2 - Hair gloss measuring instrument - Google Patents

Hair gloss measuring instrument Download PDF

Info

Publication number
JP3964323B2
JP3964323B2 JP2002379177A JP2002379177A JP3964323B2 JP 3964323 B2 JP3964323 B2 JP 3964323B2 JP 2002379177 A JP2002379177 A JP 2002379177A JP 2002379177 A JP2002379177 A JP 2002379177A JP 3964323 B2 JP3964323 B2 JP 3964323B2
Authority
JP
Japan
Prior art keywords
light
hair
measuring
measuring instrument
gloss
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.)
Expired - Fee Related
Application number
JP2002379177A
Other languages
Japanese (ja)
Other versions
JP2004212088A (en
Inventor
利行 高橋
豊 丹呉
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.)
Kose Corp
Original Assignee
Kose Corp
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.)
Filing date
Publication date
Application filed by Kose Corp filed Critical Kose Corp
Priority to JP2002379177A priority Critical patent/JP3964323B2/en
Publication of JP2004212088A publication Critical patent/JP2004212088A/en
Application granted granted Critical
Publication of JP3964323B2 publication Critical patent/JP3964323B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、毛髪のつや測定器具に関する。更に詳しくは、毛髪を切断したりすることなく、毛髪のどこの部分についても正確かつ簡便にそのつやを測定することができる毛髪のつや測定器具に関する。
【0002】
【従来の技術】
毛髪のつやは、毛髪の損傷や損傷の度合い等の毛髪の健康度を示すものであり、毛髪に外観上の美しさを与える大きな要因の一つである。また、近年では、毛髪のつやは、シャンプー、リンス、整髪料等の毛髪化粧料の効果を評価する上でも重要な指標とされているものである。
【0003】
この毛髪のつやについては、従来より種々の方法で測定が行われてきたが、最も一般的な毛髪のつやの測定方法は、目視により評価する方法である。しかし、この方法では測定者による評価のばらつきが生じてしまい、客観的な評価を行うには専門的な知識と十分な経験が必要となり、店頭などで手軽に実施できないという欠点があった。また、近年ではカラーリングされた毛髪も多くなり、色構成も多種ないし複雑になってきているため、目視によって毛髪のつやを正確に評価ないし判断することは困難となってきている。
【0004】
一方、機械的な操作で毛髪のつやを測定する方法としては、カラー画像の解析を用いて毛髪のつやを測定する方法(例えば、特許文献1)や、皮膚表面の性状を測定するために物体に光を照射し、その反射光を検知・解析する方法(例えば、特許文献2及び3参照)を転用する方法が知られていた。しかし、これらの方法は、いずれも装置が大がかりで測定方法も複雑であるため、ユーザー自身による測定や、店頭などでの簡易的な測定には利用できないという問題があった。
【0005】
また、本発明者も、毛髪表面に複数の角度から光を照射して、それぞれの反射光の違いを求めて数値化することにより毛髪のつやの程度を測定する測定器具を開発し、特許出願している(特許文献4参照)。この測定器具は小型で使用方法も簡便であるため、販売店の店頭等でも容易に毛髪のつやを測定できるものであるが、測定部である空隙に毛髪を挟み込んで測定を行うという構造上、毛髪の根元部分の測定が困難であるという欠点があった。
【0006】
【特許文献1】
特開平4−105045号公報(第1−11頁)
【特許文献2】
特開平7−71945号公報(第1−8頁)
【特許文献3】
特開平10−137194号公報(第1−10頁)
【特許文献4】
特開2000−116622号公報(第1−5頁)
【0007】
【発明が解決しようとする課題】
従って、毛髪に負担を与えずに、また、毛髪の色の影響を受けることなく、毛髪のどこの部分についても正確にかつ簡便にそのつやを測定できる器具の提供が求められていた。
【0008】
【課題を解決するための手段】
本発明者らは、上記課題を解決すべく鋭意研究を行った結果、光源から毛髪に対し照射した光の反射光を、直接の反射光である正反射光と間接的な反射光である拡散反射光として受光し、それぞれの反射光の差分を指標とすれば、毛髪のつやの程度を正確に測定できることを知った。そして、この測定原理を利用した毛髪のつや測定器具を案出し、本発明を完成した。
【0009】
すなわち本発明は、一部が測定部として開放された遮光空間内に、毛髪に光を照射するための光源と、該光源から毛髪へ照射された光の正反射光を測光するための少なくとも1つの受光部と、拡散反射光を測光するための少なくとも一つの受光部を有することを特徴とする毛髪のつや測定器具を提供するものである。
【0010】
【発明の実施の形態】
以下、本発明についての実施態様を示す図面を挙げて、本発明を説明する。
【0011】
図1は、本発明の毛髪のつや測定器具の一態様を模式的に表した平面図であり、図2はその側面図、図3は図2を矢印方向から見た図である。また、図4は図2におけるA−A'方向の部分断面図、図5は、図2におけるB−B'方向の断面図を示す。各図中、1は測定器具本体、2は遮光空間、3は測定部、4は光源、5(5a及び5b)は受光部、6は変換部、7は表示部、8は操作ボタン、9は毛髪試料をそれぞれ示す。
【0012】
図1および図2に示す毛髪のつや測定器具1(以下、「測定器具」とする)は、その基本構成として、測定器具1の先端に設けられた遮光空間2に、被検対象である毛髪試料9に対して光を照射するための光源4と、かかる照射光の反射光を受光してその強度を測定する(測光する)、少なくとも2つの受光部5(拡散反射光用受光部5a及び正反射光用受光部5b)が設けられている。
【0013】
光を照射するために使用される光源4としては、種々の光源を使用することができるが、測定器具1をコンパクトなものとするために、発光ダイオードを使用することが好ましい。
【0014】
一方、反射光を受光する受光部5としては、フォトダイオード、フォトトランジスタ等を使用することができるが、応答性が速い、出力のバラツキが少ない、入射光量と出力との直線性がよい等の理由から、フォトダイオードを用いることが好ましい。
【0015】
また、上記光源4および受光部5が設けられる遮光空間2は、その一部が測定部3として開放されているものである。この遮光空間2は、受光部5が毛髪試料9からの反射光を正確に測定するために、測定部3以外の部分からの光を実質的に遮蔽することができ、かつ少なくとも測定部3の周辺はある程度の弾力性を有する材料で構成されることが好ましい。また、その形状としては、球の一部を切り取ったような形状(例えば、お椀型)であることが好ましい。
【0016】
更に、遮光空間2に設けられた測定部3は、その部分に毛髪試料9を当て、光源4からの光を照射する部分である。この測定部3の形状は、特に制約があるわけではないが、毛髪試料9を当てる位置による影響をなくすため、円形形状であることが好ましい。本発明の測定器具1は、このように測定部3を毛髪試料9に当てて毛髪のつやを測定する手段を用いるため、毛髪の根元部分を含む毛髪のどこの部分についても正確にそのつやを測定することができるのである。
【0017】
本発明の測定器具1は、図4及び図5に示すように、測定部3に接触して置かれた毛髪試料9に対して光源4から光を照射し、この反射光を少なくとも2つの受光部5(5a及び5b)で受光するものであるが、これら受光部5のうち一方は、光源4から照射された光の反射光のうち拡散反射光を受光するものであり、他の一方は正反射光を受光するものである。
【0018】
より具体的には、図4に示すように、光源4の反対側に、測定部3の形成する平面(毛髪試料9の面)に対し、光源の光軸の角度と同じ角度で光軸を向けた受光部5bを正反射光用の受光部とする。一方、受光部5bと十分に離れた位置、好ましくは、測定部3が形成する平面(毛髪試料9の面)に垂直な上部方向に、当該平面方向に光軸を向けた拡散光用の受光部5aを設ける。
【0019】
測定部3の形成する平面に対する光源4の光軸の角度は、30°から60°程度の角度であり、特に約45°の角度に配置することが好ましい。
【0020】
更に、本発明の測定器具1は、複数の光源4を用い、これに対する拡散反射光用受光部5a及び正反射光用受光部5bを設けてもよい。光源4を複数にすることにより、光を毛髪試料9に対して各方向から照射した場合における反射光を測定して毛髪のつやの程度を判定することができるため、キューティクルの剥がれ方に左右され、方向性を有するとされる毛髪のつやについて、その方向性の影響を防止し、毛髪試料9のつやを客観的かつ正確に測定できるので好ましい。このように複数の光源4を使用する場合にあっても、上記した光源4と受光部5の位置関係を満足させるように、当該各光源の位置に対応させて受光部5を配置するようにする必要がある。
【0021】
図6は、光源4として4a、4b及び4cの3つを、同心円上に各光源同士を120゜間隔に配置した態様(正三角形状に配置した例)を示したものである。この態様においても、受光部5aが毛髪試料9の面(測定部面)の垂直方向に配置されるため、どの光源4に対しても、毛髪試料9に照射された光の拡散反射光を受光することが可能となる。そして、別途設けられているもう一つの受光部5b(5ba、5bb及び5bc)により、反射光のうちの正反射光を受光することができる。
【0022】
上記の光源4から毛髪試料9に照射され、受光部5bおよび5aで正反射光及び拡散反射光として受光された光は、反射光の強度に応じた電気的信号(電圧ないしは電流)に変換される。そして、正反射光と拡散反射光の電気的信号強度の差分を算出し、これをつやの指標値とすることにより、毛髪のつやの程度を判定することができる。
【0023】
上記したつや指標値の算出も含め、受光部5で感知された反射光の強度の解析等は、受光部5と連接された変換部6により行ってもよく、更に、あらかじめ変換部6に、または該変換部6に連接された制御部(図示しない)に組み込まれたプログラムや制御手段等に従って、表示部7に毛髪試料9のつや情報として表示することができる。
【0024】
なお、光源4として複数の光源を用いた場合にあっては、各光源ごとに対応するつやの指標値のそれぞれを用いて判定を行ってもよいが、各光源に対応するつやの指標値の平均値を求めて判定を行えば、毛髪試料9のつやの程度をより正確に測定できるため好ましい。
【0025】
また、本発明の測定器具1においては、その使用における必要な操作、例えば上記した光源4からの光の照射の入/切、検出電圧ないし電流値のつや情報への変換、表示部7への毛髪のつや情報の表示等の操作は、全て、操作ボタン8により行うことができる。
【0026】
以上の構成による本発明のつや測定器具1を用いて毛髪試料9のつやの測定を行う方法を、光源4として3つの発光ダイオード4a、4b及び4cを用いた、図6に示した態様を例として説明する。
【0027】
図6における3つの光源(発光ダイオード)をそれぞれ4a、4b及び4cとし、また、正反射光を受光する受光部5bを、それぞれの光源に対応させた5ba(4aに対応)、5bb(4bに対応)及び5bc(4cに対応)とする。まず、測定器具1の遮光空間2に設けられた測定部3を被験者の毛髪試料9に押し当てた後、発光ダイオード4aを点灯させて毛髪試料9に光を照射し、その反射光のうち、拡散反射光を受光部5aで、正反射光を5baでそれぞれ測定して、発光ダイオード4aに対応する電気的信号として電圧ないしは電流値を検出する。次に、かかる操作を、同様に発光ダイオード4b及び発光ダイオード4cを順次点灯させて行い、それぞれの発光ダイオードの照射光に対応する反射光を受光部5ba及び5bb並び5bcで感知し、発光ダイオードそれぞれに対応する電圧ないしは電流値を検出する。
【0028】
このようにして各発光ダイオード4a、4b及び4cに対する正反射光及び拡散反射光の電圧ないしは電流値が測定できたら、受光部5a及び5b(5ba、5bb及び5cc)に接続される変換部6にて各光源4に対する正反射光及び拡散反射光の電圧ないしは電流値の平均値を求め、その差分を算出して毛髪のつやの程度とする。そして、当該つやの程度を表示部7に表示等することにより、毛髪試料9のつやの程度が簡便に判断することができる。
【0029】
なお、上記の態様は、いずれも測定器具1の全体の形状が縦長の6面体に近い形状により構成されているものであるが、かかる形状には限定されず、例えば、遮光空間2を主構成とした、測定器具1全体が手のひらに収まるようなサイズの椀形状もしくは多角形の板状形状により構成されていてもよい。これらの形状による態様においても、測定部3を毛髪試料9に当てて毛髪のつやを測定する手段を用いるために、毛髪の根元部分を含む毛髪のどこの部分についても問題なく正確にそのつやを測定することができるものである。
【0030】
【作用】
本発明の測定器具1で毛髪のつやが正確に測定される原理は、光源から毛髪試料に照射された光の反射光を、正反射光及び拡散反射光に分けて受光するため、反射光中のつや成分を正反射光及び拡散反射光の差として取り出すことができるというものである。すなわち、例えば、図7に示すように、光源4から毛髪試料9が置かれた測定部面に対しほぼ45°の角度で光を照射させ、かつ、入射光軸に対し、45゜に反射される光(拡散反射光)及び90°に反射される光(正反射光)を受光部5a及び5bで受光し、その差分を求めれば、正反射光中に含まれる拡散反射光が消し去られ、毛髪のつやとされる反射光成分のみを正確に測定できるのである。
【0031】
【実施例】
次に実施例を挙げて本発明を更に詳しく説明するが、本発明はこれら実施例に何ら制約されるものではない。
【0032】
実 施 例 1
図1に示す本発明の測定器具を用いて毛髪のつやを測定し、測定結果を従来品の毛髪のつや測定器具及び目視による測定結果と比較・評価した。
【0033】
(a)本発明の測定器具による測定:
被検サンプルとして、市販の毛束4種類(以下、「サンプル1〜4」とする)を用意した。当該サンプル1〜4に対し、光源として発光ダイオードを用いる図6の測定器具を用い、下記表1(光源)及び表2(受光部)に示す測定条件により、正反射光及び拡散反射光の強度(電圧値)を測定した。測定結果を表3(正反射光)及び表4(拡散反射光)に示す。なお、本測定にあたっては、図7に示されるように、一つの受光部を、光源に対して、毛髪試料9の面を介して45°の角度(かつ毛髪試料の面に対して垂直方向)に配置し、また、もう一つの受光部を、光源4に対して、毛髪試料9の面を介して90°の角度となるように配置した。
【0034】
( 測定条件:光源 )
【表1】

Figure 0003964323
( 測定条件:受光部)
【表2】
Figure 0003964323
【0035】
( 測定結果:正反射光 )
【表3】
Figure 0003964323
( 測定結果:拡散反射光 )
【表4】
Figure 0003964323
【0036】
そして、上記の測定結果を用いて、光源ごとの電位差(正反射方向の電圧と拡散反射方向の電圧との差分)を求めて、毛髪のつやの指標値とした。結果を表5に示す。
【0037】
( 結 果 )
【表5】
Figure 0003964323
【0038】
(b)従来品による測定:
特開平2000−116622号公報中に開示される毛髪のつや測定器具を用いて、下記表6(光源)及び表7(受光部)に記載した測定条件を用い、かつ、毛髪試料に対する光源と受光部の関係を図8に示すようにして、サンプル1〜4の毛髪に対して、正反射光及び拡散反射光の強度(電圧値)を測定した。測定結果を表8(正反射光)及び表9(拡散反射光)に示す。
【0039】
( 測定条件:光源 )
【表6】
Figure 0003964323
( 測定条件:受光部)
【表7】
Figure 0003964323
【0040】
( 測定結果:正反射光 )
【表8】
Figure 0003964323
( 測定結果:拡散反射光 )
【表9】
Figure 0003964323
【0041】
そして、上記の測定結果を用いて、電位差(正反射方向の電圧と拡散反射方向の電圧との差)を測定して、毛髪のつやの程度の指標値とした。結果を表10に示す。
【0042】
( 結 果 )
【表10】
Figure 0003964323
【0043】
(c)目視による評価:
サンプル1〜4に対して、目視により毛髪のつやの評価を行った。なお、判定は、「つやがある」、「ややつやがある」、「あまりつやがない」、「つやがない」の4段階で行った。結果を表11に示す。
【0044】
( 結 果 )
【表11】
Figure 0003964323
【0045】
本発明品の結果(表5)と目視評価(表11)を比較すると、専門家の目視評価によりつやがあると判定されたサンプルについては、本発明の測定器具によるつやの程度の指標値も高く、両者の結果との間に明らかな相関関係があることが確認できた。また、本発明品の結果(表5)と従来品の結果(表10)を比較しても、その絶対値は異なるが、同様な傾向を示すものであった。以上の結果より、本発明の毛髪のつや測定器具を用いれば、毛髪のつやを正確に測定できるものと判断された。
【0046】
【発明の効果】
本発明の毛髪のつや測定器具は、被検対照である毛髪に照射した光の反射光を複数方向から検出して毛髪のつやを判定するため、毛髪のつやを正確に測定ないし評価することができる。また、測定に際して毛髪の切断等の操作を必要としないため、毛髪に負担をかけることもなく、毛髪の根元部分を含む毛髪のどこの部分についても何の問題もなくそのつやを正確に測定することができるものである。
【0047】
また、本発明の毛髪のつや測定器具は小型で使用方法も簡便であるため、販売店の店頭などでも容易に毛髪のつやを測定できるものである。
【図面の簡単な説明】
【図1】 本発明の毛髪のつや測定器具の一態様を示す平面図である。
【図2】 本発明の毛髪のつや測定器具の一態様を示す側面図である。
【図3】 図2を矢印方向から見た状態を示す図である。
【図4】 図2のA−A’方向の部分断面図である。
【図5】 図2のB−B’方向の断面図である。
【図6】 図5において、3つの光源(発光ダイオード)を用いた態様を示す図である。
【図7】 本発明の測定原理、特に光源及び受光部と毛髪との位置関係を模式的に表した図面である。
【図8】 実施例1の(b)の従来品による測定における、毛髪試料に対する光源と受光部の位置関係を模式的に示した図面である。
【符号の説明】
1 …… 測定器具本体
2 …… 遮光空間
3 …… 測定部
4 …… 光源
4a …… 光源(発光ダイオード)
5 …… 受光部
5a …… 受光部(拡散反射光受光)
5ba、5bb及び5bc…… 受光部(正反射光受光)
6 …… 変換部
7 …… 表示部
8 …… 操作ボタン
9 …… 毛髪試料
以 上[0001]
BACKGROUND OF THE INVENTION
The present invention relates to hair gloss and a measuring instrument. More particularly, the present invention relates to a hair gloss measuring instrument that can accurately and easily measure the gloss of any part of the hair without cutting the hair.
[0002]
[Prior art]
The gloss of the hair indicates the degree of hair health such as the damage of the hair and the degree of the damage, and is one of the major factors that give the hair an appearance beauty. In recent years, the gloss of hair is an important index for evaluating the effects of hair cosmetics such as shampoos, rinses and hair styling agents.
[0003]
The hair gloss has been conventionally measured by various methods, but the most common method for measuring hair gloss is a method for visual evaluation. However, this method has a disadvantage in that the evaluation varies by the measurer, and specialized knowledge and sufficient experience are required for objective evaluation, and it cannot be easily performed at the store. Further, in recent years, the number of colored hair has increased and the color composition has become various and complicated, and it has become difficult to accurately evaluate or judge the gloss of hair by visual observation.
[0004]
On the other hand, as a method for measuring the gloss of hair by a mechanical operation, a method for measuring the gloss of hair using analysis of a color image (for example, Patent Document 1) or an object for measuring the properties of the skin surface. A method of diverting a method of irradiating light and detecting and analyzing the reflected light (see, for example, Patent Documents 2 and 3) has been known. However, all of these methods have a problem that they cannot be used for measurement by the user himself or simple measurement at a store or the like because the apparatus is large and the measurement method is complicated.
[0005]
The present inventor has also developed a measuring instrument that measures the degree of gloss of hair by irradiating the hair surface with light from a plurality of angles, and calculating the difference between the reflected lights, and applying for a patent. (See Patent Document 4). Since this measuring instrument is small and easy to use, it can easily measure the gloss of the hair even at the store front, etc., but on the structure that the measurement is performed by sandwiching the hair in the gap that is the measurement unit, There was a drawback that it was difficult to measure the root portion of the hair.
[0006]
[Patent Document 1]
JP-A-4-105045 (page 1-11)
[Patent Document 2]
JP-A-7-71945 (pages 1-8)
[Patent Document 3]
JP 10-137194 A (page 1-10)
[Patent Document 4]
JP 2000-116622 A (page 1-5)
[0007]
[Problems to be solved by the invention]
Therefore, there has been a demand for providing a device that can accurately and easily measure the gloss of any part of the hair without giving a burden to the hair and without being affected by the color of the hair.
[0008]
[Means for Solving the Problems]
As a result of diligent research to solve the above-mentioned problems, the inventors of the present invention diffused reflected light of light emitted from a light source to hair into regular reflected light that is direct reflected light and diffuse light that is indirectly reflected light. It was learned that if the light received as reflected light and the difference between each reflected light was used as an index, the glossiness of the hair could be measured accurately. And the hair luster and measuring instrument using this measuring principle were devised, and the present invention was completed.
[0009]
That is, the present invention provides at least one light source for irradiating the hair with light in a light-shielding space that is partially opened as a measurement unit, and at least one for measuring specularly reflected light emitted from the light source to the hair. It is an object of the present invention to provide a hair shine or a measuring instrument having two light receiving portions and at least one light receiving portion for measuring diffusely reflected light.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings showing embodiments of the present invention.
[0011]
FIG. 1 is a plan view schematically showing one embodiment of the hair polish and measuring instrument of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a view of FIG. 4 is a partial cross-sectional view in the AA ′ direction in FIG. 2, and FIG. 5 is a cross-sectional view in the BB ′ direction in FIG. In each figure, 1 is a measuring instrument body, 2 is a light shielding space, 3 is a measuring unit, 4 is a light source, 5 (5a and 5b) is a light receiving unit, 6 is a converting unit, 7 is a display unit, 8 is an operation button, 9 Indicates hair samples respectively.
[0012]
The hair polish and measuring instrument 1 (hereinafter referred to as “measuring instrument”) shown in FIG. 1 and FIG. 2 has, as its basic structure, a hair to be examined in a light-shielding space 2 provided at the tip of the measuring instrument 1. A light source 4 for irradiating the sample 9 with light and a reflected light of the irradiated light and measuring its intensity (measuring light), at least two light receiving parts 5 (diffuse reflected light receiving part 5a and A regular reflection light receiving portion 5b) is provided.
[0013]
Although various light sources can be used as the light source 4 used for irradiating light, it is preferable to use a light emitting diode in order to make the measuring instrument 1 compact.
[0014]
On the other hand, a photodiode, a phototransistor, or the like can be used as the light receiving unit 5 that receives the reflected light. However, the response is fast, the output variation is small, the linearity between the incident light amount and the output is good, etc. For reasons, it is preferable to use a photodiode.
[0015]
A part of the light shielding space 2 in which the light source 4 and the light receiving unit 5 are provided is opened as a measuring unit 3. The light-shielding space 2 can substantially shield light from portions other than the measurement unit 3 in order for the light-receiving unit 5 to accurately measure the reflected light from the hair sample 9, and at least the measurement unit 3. The periphery is preferably made of a material having a certain degree of elasticity. Moreover, as the shape, it is preferable that it is the shape (for example, bowl shape) which cut off some spheres.
[0016]
Furthermore, the measurement unit 3 provided in the light shielding space 2 is a part that irradiates the light from the light source 4 with the hair sample 9 applied to the part. The shape of the measurement unit 3 is not particularly limited, but is preferably a circular shape in order to eliminate the influence of the position where the hair sample 9 is applied. Since the measuring instrument 1 of the present invention uses the means for measuring the gloss of the hair by placing the measuring part 3 on the hair sample 9 in this way, it is possible to accurately polish any part of the hair including the root part of the hair. It can be measured.
[0017]
As shown in FIGS. 4 and 5, the measuring instrument 1 of the present invention irradiates light from a light source 4 onto a hair sample 9 placed in contact with the measuring unit 3 and receives at least two reflected lights. The light is received by the unit 5 (5a and 5b). One of the light receiving units 5 receives diffuse reflected light among the reflected light of the light emitted from the light source 4, and the other one It receives regular reflection light.
[0018]
More specifically, as shown in FIG. 4, on the opposite side of the light source 4, the optical axis is set at the same angle as the optical axis angle of the light source with respect to the plane formed by the measurement unit 3 (the surface of the hair sample 9). The directed light receiving portion 5b is a light receiving portion for regular reflection light. On the other hand, light reception for diffused light with the optical axis directed in the plane direction at a position sufficiently separated from the light receiving unit 5b, preferably in the upper direction perpendicular to the plane (the surface of the hair sample 9) formed by the measurement unit 3 A portion 5a is provided.
[0019]
The angle of the optical axis of the light source 4 with respect to the plane formed by the measurement unit 3 is an angle of about 30 ° to 60 °, and is preferably arranged at an angle of about 45 °.
[0020]
Further, the measuring instrument 1 of the present invention may use a plurality of light sources 4 and provide a diffused light receiving unit 5a and a regular reflected light receiving unit 5b for the light source 4. By using a plurality of light sources 4, it is possible to determine the degree of gloss of the hair by measuring the reflected light when light is applied to the hair sample 9 from each direction, and therefore depends on how the cuticle peels, About the gloss of the hair considered to have directionality, since the influence of the directionality is prevented and the gloss of the hair sample 9 can be measured objectively and accurately, it is preferable. Even when a plurality of light sources 4 are used in this way, the light receiving portions 5 are arranged corresponding to the positions of the respective light sources so as to satisfy the positional relationship between the light sources 4 and the light receiving portions 5 described above. There is a need to.
[0021]
FIG. 6 shows an embodiment in which three light sources 4a, 4b, and 4c are arranged on a concentric circle at intervals of 120 ° (examples arranged in an equilateral triangle). Also in this embodiment, since the light receiving unit 5a is arranged in the direction perpendicular to the surface (measurement unit surface) of the hair sample 9, any light source 4 receives the diffuse reflected light of the light irradiated to the hair sample 9. It becomes possible to do. Then, the specularly reflected light of the reflected light can be received by another light receiving portion 5b (5ba, 5bb and 5bc) provided separately.
[0022]
The light irradiated from the light source 4 onto the hair sample 9 and received as regular reflection light and diffuse reflection light by the light receiving portions 5b and 5a is converted into an electrical signal (voltage or current) corresponding to the intensity of the reflected light. The Then, by calculating the difference in the electrical signal intensity between the regular reflection light and the diffuse reflection light and using this difference as an index value for the gloss, the degree of gloss of the hair can be determined.
[0023]
The analysis of the intensity of the reflected light detected by the light receiving unit 5 including the above-described calculation of the gloss value and the index value may be performed by the conversion unit 6 connected to the light receiving unit 5. Alternatively, according to a program or control means incorporated in a control unit (not shown) connected to the conversion unit 6, the hair sample 9 can be displayed as gloss or information on the display unit 7.
[0024]
When a plurality of light sources are used as the light source 4, the determination may be made using each of the glossy index values corresponding to each light source, but the average value of the glossy index values corresponding to each light source It is preferable to make a determination by determining the degree of gloss of the hair sample 9 more accurately.
[0025]
Further, in the measuring instrument 1 of the present invention, necessary operations in its use, for example, on / off of light irradiation from the light source 4 described above, conversion of detected voltage or current value to glossy information, display to the display unit 7 All operations such as hair display and information display can be performed with the operation buttons 8.
[0026]
The method of measuring the gloss of the hair sample 9 using the gloss measuring instrument 1 of the present invention having the above configuration, using the three light emitting diodes 4a, 4b, and 4c as the light source 4 as an example shown in FIG. explain.
[0027]
The three light sources (light emitting diodes) in FIG. 6 are 4a, 4b, and 4c, respectively, and the light receiving unit 5b that receives the specularly reflected light corresponds to each light source 5ba (corresponding to 4a), 5bb (corresponding to 4b) Correspondence) and 5bc (corresponding to 4c). First, after pressing the measuring unit 3 provided in the light-shielding space 2 of the measuring instrument 1 against the hair sample 9 of the subject, the light emitting diode 4a is turned on to irradiate the hair sample 9 with light, and among the reflected light, The diffuse reflection light is measured by the light receiving unit 5a, and the regular reflection light is measured by 5ba, and the voltage or current value is detected as an electrical signal corresponding to the light emitting diode 4a. Next, this operation is similarly performed by sequentially turning on the light emitting diode 4b and the light emitting diode 4c, and the reflected light corresponding to the irradiation light of each light emitting diode is sensed by the light receiving portions 5ba and 5bb and 5bc, respectively. The voltage or current value corresponding to is detected.
[0028]
When the voltage or current value of the regular reflection light and diffuse reflection light for each of the light emitting diodes 4a, 4b and 4c can be measured in this way, the conversion unit 6 connected to the light receiving units 5a and 5b (5ba, 5bb and 5cc) is connected. Then, the average value of the voltage or current value of the regular reflection light and diffuse reflection light with respect to each light source 4 is obtained, and the difference is calculated to obtain the degree of gloss of the hair. The degree of gloss of the hair sample 9 can be easily determined by displaying the degree of gloss on the display unit 7.
[0029]
In any of the above-described aspects, the entire shape of the measuring instrument 1 is configured by a shape close to a vertically long hexahedron, but is not limited to such a shape, and for example, the light shielding space 2 is mainly configured. The entire measuring instrument 1 may be configured by a bowl shape or a polygonal plate shape that fits in the palm of the hand. Even in the embodiments according to these shapes, since the means for measuring the gloss of the hair by applying the measuring unit 3 to the hair sample 9 is used, the gloss of any part of the hair including the root part of the hair can be accurately and accurately removed. It can be measured.
[0030]
[Action]
The principle that the gloss of the hair is accurately measured with the measuring instrument 1 of the present invention is that the reflected light of the light irradiated from the light source to the hair sample is divided into regular reflected light and diffuse reflected light, and thus received in the reflected light. The gloss component can be extracted as the difference between the regular reflection light and the diffuse reflection light. That is, for example, as shown in FIG. 7, light is irradiated from the light source 4 to the measurement surface on which the hair sample 9 is placed at an angle of approximately 45 °, and is reflected at 45 ° with respect to the incident optical axis. Light (diffuse reflection light) and light reflected at 90 ° (regular reflection light) are received by the light receiving portions 5a and 5b, and the difference between them is obtained, and the diffuse reflection light contained in the regular reflection light is erased. Only the reflected light component that is glossy on the hair can be accurately measured.
[0031]
【Example】
EXAMPLES Next, although an Example is given and this invention is demonstrated in more detail, this invention is not restrict | limited at all by these Examples.
[0032]
Example 1
The hair gloss was measured using the measuring instrument of the present invention shown in FIG. 1, and the measurement results were compared and evaluated with the conventional hair gloss measuring instrument and the visual measurement results.
[0033]
(A) Measurement with the measuring instrument of the present invention:
Four types of commercially available hair bundles (hereinafter referred to as “samples 1 to 4”) were prepared as test samples. For the samples 1 to 4, the intensity of specular reflection light and diffuse reflection light is measured according to the measurement conditions shown in Table 1 (light source) and Table 2 (light receiving part) below using the measurement instrument of FIG. (Voltage value) was measured. The measurement results are shown in Table 3 (regular reflection light) and Table 4 (diffuse reflection light). In this measurement, as shown in FIG. 7, one light receiving unit is positioned at an angle of 45 ° with respect to the light source through the surface of the hair sample 9 (and perpendicular to the surface of the hair sample). In addition, another light receiving portion was disposed at an angle of 90 ° with respect to the light source 4 through the surface of the hair sample 9.
[0034]
(Measurement condition: Light source)
[Table 1]
Figure 0003964323
(Measuring condition: Receiver)
[Table 2]
Figure 0003964323
[0035]
(Measurement result: specular reflection light)
[Table 3]
Figure 0003964323
(Measurement result: diffuse reflection)
[Table 4]
Figure 0003964323
[0036]
And the potential difference (difference between the voltage in the regular reflection direction and the voltage in the diffuse reflection direction) for each light source was obtained using the above measurement result, and used as an index value for the gloss of the hair. The results are shown in Table 5.
[0037]
(Result)
[Table 5]
Figure 0003964323
[0038]
(B) Measurement with conventional products:
Using the hair polish and measuring instrument disclosed in Japanese Patent Application Laid-Open No. 2000-116622, using the measurement conditions described in Table 6 (light source) and Table 7 (light receiving unit) below, and the light source and light reception for the hair sample As shown in FIG. 8, the intensities (voltage values) of regular reflection light and diffuse reflection light were measured on the hairs of Samples 1 to 4 as shown in FIG. The measurement results are shown in Table 8 (regular reflection light) and Table 9 (diffuse reflection light).
[0039]
(Measurement condition: Light source)
[Table 6]
Figure 0003964323
(Measuring condition: Receiver)
[Table 7]
Figure 0003964323
[0040]
(Measurement result: specular reflection light)
[Table 8]
Figure 0003964323
(Measurement result: diffuse reflection)
[Table 9]
Figure 0003964323
[0041]
Then, the potential difference (difference between the voltage in the regular reflection direction and the voltage in the diffuse reflection direction) was measured using the above measurement result to obtain an index value for the degree of gloss of the hair. The results are shown in Table 10.
[0042]
(Result)
[Table 10]
Figure 0003964323
[0043]
(C) Visual evaluation:
The samples 1 to 4 were visually evaluated for the gloss of the hair. In addition, the determination was performed in four stages: “There is gloss”, “There is gloss”, “Not very gloss”, and “No gloss”. The results are shown in Table 11.
[0044]
(Result)
[Table 11]
Figure 0003964323
[0045]
Comparing the results (Table 5) and visual evaluation (Table 11) of the products of the present invention, the index value of the degree of gloss by the measuring instrument of the present invention is also high for samples determined to be glossy by expert visual evaluation. It was confirmed that there was a clear correlation between the two results. Further, even when the results of the present invention (Table 5) and the results of the conventional product (Table 10) were compared, the absolute values were different, but showed the same tendency. From the above results, it was determined that the hair gloss can be accurately measured by using the hair gloss and measuring instrument of the present invention.
[0046]
【The invention's effect】
The hair gloss measuring instrument of the present invention is capable of accurately measuring or evaluating hair gloss because it detects reflected light from a plurality of directions of reflected light irradiated to the test subject hair. it can. In addition, since no operation such as cutting the hair is required for the measurement, it is possible to accurately measure the gloss of any part of the hair including the root part of the hair without any problem without burdening the hair. It is something that can be done.
[0047]
Further, since the hair gloss and measuring instrument of the present invention are small and easy to use, the hair gloss can be easily measured even at a store.
[Brief description of the drawings]
FIG. 1 is a plan view showing one embodiment of a hair polish and measuring instrument of the present invention.
FIG. 2 is a side view showing an embodiment of the hair gloss measuring instrument of the present invention.
FIG. 3 is a diagram showing a state of FIG. 2 viewed from the direction of an arrow.
4 is a partial cross-sectional view in the direction of AA ′ in FIG. 2;
5 is a cross-sectional view in the BB ′ direction of FIG. 2;
FIG. 6 is a diagram showing an embodiment using three light sources (light emitting diodes) in FIG.
FIG. 7 is a drawing schematically showing the measurement principle of the present invention, in particular, the positional relationship between the light source and light receiving unit and hair.
FIG. 8 is a drawing schematically showing a positional relationship between a light source and a light receiving portion with respect to a hair sample in the measurement using the conventional product of Example 1 (b).
[Explanation of symbols]
1 ... Measuring instrument body 2 ... Shading space 3 ... Measuring unit 4 ... Light source 4a ... Light source (light emitting diode)
5 ... Light receiving part 5a ... Light receiving part (diffuse reflected light reception)
5ba, 5bb and 5bc ... Light-receiving part (regular reflection light reception)
6 ...... Conversion unit 7 ...... Display unit 8 ...... Operation button 9 ...... More than hair sample

Claims (5)

一部が測定部として開放された遮光空間内に、毛髪に光を照射するための複数の光源と、該光源から毛髪へ照射された光の正反射光を測光するための複数の受光部と、拡散反射光を測光するための少なくとも1つの受光部を有する毛髪のつや測定器具であって、前記複数の光源が、複数の方向から被検対象に対して照射するように配置されるとともに、前記正反射光を測光するための受光部角度が、光源と反対側に、測定面の形成する平面に対して、光源の光軸角度と同じ角度となるよう設けられており、更に、拡散光反射光を測光するための受光部の光軸が、測定面の形成する平面に対し垂直であることを特徴とする毛髪のつや測定器具A plurality of light sources for irradiating the hair with light in a light shielding space partially opened as a measurement unit, and a plurality of light receiving units for measuring specularly reflected light of the light irradiated on the hair from the light source, A hair shine or measuring instrument having at least one light receiving unit for measuring diffusely reflected light , wherein the plurality of light sources are arranged to irradiate the test object from a plurality of directions, The light receiving unit angle for measuring the specularly reflected light is provided on the opposite side of the light source so as to be the same angle as the optical axis angle of the light source with respect to the plane formed by the measurement surface. A hair gloss measuring instrument, wherein an optical axis of a light receiving unit for measuring reflected light is perpendicular to a plane formed by a measuring surface . 正反射光を測光するための受光部の光軸が、測定面の形成する平面に対して45°の角度である請求項第1項記載の毛髪のつや測定器具。The hair polish or measuring instrument according to claim 1, wherein the optical axis of the light receiving portion for measuring the specularly reflected light is at an angle of 45 ° with respect to the plane formed by the measuring surface. 前記複数の光源が、測定面の中心に対し同心円上に配置されていることを特徴とする請求項第1項または第2項の何れかの項に記載の毛髪のつや測定器具 The hair gloss measuring instrument according to any one of claims 1 and 2, wherein the plurality of light sources are arranged concentrically with respect to the center of the measurement surface . 前記複数の光源が、測定面の中心に対し同心円上に各光源同士を120°間隔に配置した3つの光源であることを特徴とする請求項第1項ないし第3項の何れかの項に記載の毛髪のつや測定器具 4. The light source according to claim 1, wherein the plurality of light sources are three light sources in which the light sources are arranged at 120 ° intervals on a concentric circle with respect to the center of the measurement surface. The hair shine measuring instrument described . 更に毛髪のつやの程度を表示する表示部を設けるものである請求項第1項ないし第4項の何れかの項記載の毛髪のつや測定器具。  The hair gloss measuring instrument according to any one of claims 1 to 4, further comprising a display unit for displaying a degree of hair gloss.
JP2002379177A 2002-12-27 2002-12-27 Hair gloss measuring instrument Expired - Fee Related JP3964323B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002379177A JP3964323B2 (en) 2002-12-27 2002-12-27 Hair gloss measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002379177A JP3964323B2 (en) 2002-12-27 2002-12-27 Hair gloss measuring instrument

Publications (2)

Publication Number Publication Date
JP2004212088A JP2004212088A (en) 2004-07-29
JP3964323B2 true JP3964323B2 (en) 2007-08-22

Family

ID=32815751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002379177A Expired - Fee Related JP3964323B2 (en) 2002-12-27 2002-12-27 Hair gloss measuring instrument

Country Status (1)

Country Link
JP (1) JP3964323B2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5267866B2 (en) * 2009-02-25 2013-08-21 株式会社リコー Image forming apparatus
JP5585228B2 (en) * 2010-06-15 2014-09-10 株式会社リコー Image inspection apparatus, image inspection method, and image forming apparatus
WO2012070693A1 (en) 2010-11-26 2012-05-31 Ricoh Company, Ltd. Optical sensor and image forming apparatus
JP5953671B2 (en) * 2011-03-15 2016-07-20 株式会社リコー Optical sensor and image forming apparatus
MX2013010616A (en) 2011-03-21 2014-08-18 Coloright Ltd Systems for custom coloration.
US9316580B2 (en) 2011-03-21 2016-04-19 Coloright Ltd. Systems for custom coloration
JP5900726B2 (en) * 2011-09-05 2016-04-06 株式会社リコー Optical sensor, image forming apparatus, and discrimination method
CN107148560A (en) 2013-09-26 2017-09-08 卡拉莱特有限公司 Hair reader, distributor and related System and method for
WO2015166340A2 (en) 2014-04-27 2015-11-05 Coloright Ltd. Apparatus and method for analyzing hair and/or predicting an outcome of a hair-coloring treatment
KR101925700B1 (en) 2014-04-27 2018-12-05 콜로라이트 리미티드 Apparatus and method for customized hair-coloring
JP2016021956A (en) * 2014-07-24 2016-02-08 株式会社前川製作所 Measuring device and measurement method for atp amount, and measuring device and measurement method for viable cell count
KR102552777B1 (en) 2016-05-24 2023-07-10 (주)아모레퍼시픽 Hair sheen diagnosis system and hair sheen diagnosis method
US10292482B2 (en) 2017-01-06 2019-05-21 Coloright Ltd. Hair-holder, hair-reader comprising the same, and methods for optically acquiring data from hair
DE102017215791A1 (en) * 2017-09-07 2019-03-07 Henkel Ag & Co. Kgaa Method and device for determining a gloss value of hair
JP7358890B2 (en) * 2019-10-01 2023-10-11 富士フイルムビジネスイノベーション株式会社 Object texture measurement device

Also Published As

Publication number Publication date
JP2004212088A (en) 2004-07-29

Similar Documents

Publication Publication Date Title
JP3964323B2 (en) Hair gloss measuring instrument
CN105636479B (en) Equipment for bacterial plaque detection
TW570768B (en) Classification and characterization of tissue through features related to adipose tissue
JP5384453B2 (en) Measuring device, measuring system, measuring method, control program, and recording medium
US20050075546A1 (en) Near infrared risk assessment of diseases
CN104825131A (en) Skin condition evaluation apparatus and skin condition evaluation method using the same
JP6755831B2 (en) How to evaluate skin condition
RU2505798C2 (en) Analysing substrates with antigen coating
EP2416144A1 (en) Application method of external dermatological medications, evaluating method of the same, application evaluating apparatus, and application evaluating program
JP3928051B2 (en) Psychological state evaluation device
JP4242720B2 (en) Hair color measuring instrument
JP3641370B2 (en) Hair gloss measuring instrument
Egawa et al. Determining water content in human nails with a portable near-infrared spectrometer
KR19990022569A (en) Method and apparatus for detecting and measuring the condition affecting color
JP2003344279A (en) Method for measuring hair moisture
CN110505838A (en) Use the skin gloss measurement of Brewster angle
JP2000513243A (en) Apparatus and method for evaluating skin wrinkles in vivo
JP5652599B2 (en) Concentration determination apparatus, concentration determination method and program
JP2004215991A (en) Evaluation method for evaluating transparency of skin
Kopola et al. Two-channel fiber optic skin erythema meter
US9615747B2 (en) Method for determining skin glycation
Kishen et al. Fiber optic backscatter spectroscopic sensor to monitor enamel demineralization and remineralization in vitro
Vasudevan et al. Melanometry for objective evaluation of skin pigmentation in pulse oximetry studies
JP6960323B2 (en) How to evaluate skin condition
JPS6110730A (en) Device for analyzing color of individual

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050601

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20061205

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070109

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070312

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070515

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070523

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20160601

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees