JPH06180248A - Evaluation technique of color rendering properties - Google Patents
Evaluation technique of color rendering propertiesInfo
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- JPH06180248A JPH06180248A JP33391992A JP33391992A JPH06180248A JP H06180248 A JPH06180248 A JP H06180248A JP 33391992 A JP33391992 A JP 33391992A JP 33391992 A JP33391992 A JP 33391992A JP H06180248 A JPH06180248 A JP H06180248A
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、一般照明分野において
より適切な照明光源の選定やより適切な照明環境を設定
するために光源の色特性のうちの目立ち感情に基づく光
源の演色性の評価手法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention evaluates the color rendering properties of a light source based on the conspicuous emotion among the color characteristics of the light source in order to select a more appropriate illumination light source and set a more appropriate illumination environment in the general illumination field. Regarding the technique.
【０００２】[0002]
【従来の技術】種々の物体色の色の見えは、人工光源下
と基準として設定された昼光下とで一般に異なる。この
ような人工光源下の色の見えと基準光下の色の見えのず
れとの差異を総称して、その人工光の演色性という。2. Description of the Related Art The appearance of colors of various object colors is generally different under an artificial light source and under daylight set as a reference. The difference between the color appearance under the artificial light source and the color appearance under the reference light is collectively referred to as the color rendering property of the artificial light.
【０００３】国際照明委員会（ＣＩＥ）および日本工業
規格（ＪＩＳ）では、基準光の色度と、演色性を評価す
べき人工光源の色度とが、一致するかほぼ近い場合に試
験光源の演色評価数を求める方式を与えている。According to the International Commission on Illumination (CIE) and the Japanese Industrial Standards (JIS), when the chromaticity of the reference light and the chromaticity of the artificial light source whose color rendering properties are to be evaluated match or are close to each other, the test light source A method for obtaining the color rendering index is provided.
【０００４】現在、規定されている演色評価数の求め方
は、評価したい人工光（試験光）下の物体色の色の見え
の基準光下のそれに対する忠実度に基づいて行われる。
たとえば、デパートのショーウィンドウの蛍光灯下の青
い色の布地が、昼光の下でもほぼ同一に見えると、その
蛍光灯の色再現はその青の布地に関して忠実である。実
際は、青色だけではなく、種々の物体色について同様な
色再現の忠実性が成立する場合、その蛍光灯は演色性が
よいといわれる。At present, the prescribed color rendering index is obtained based on the fidelity of the appearance of the color of the object color under the artificial light (test light) to be evaluated with respect to that under the reference light.
For example, if the blue colored fabric under a fluorescent light in a department store show window looks nearly identical under daylight, the color reproduction of the fluorescent light is faithful with respect to the blue fabric. In fact, it is said that the fluorescent lamp has good color rendering properties when similar fidelity of color reproduction is established not only for blue but also for various object colors.
【０００５】現行の平均演色評価数Ｒa の評価方法は、
ＣＩＥやＪＩＳで定められている８種の試験色ごとに試
験光と基準光下で求められる色差の平均を用い、最高値
を１００とした計算方法が与えられている。すなわち、
Ｒa ＝１００は、基準光と試験光がほぼ同等の演色性を
与えることを意味する。The current evaluation method of the average color rendering index Ra is
A calculation method is given with the maximum value being 100, using the average of the color differences obtained under the test light and the reference light for each of the eight test colors defined by CIE and JIS. That is,
Ra = 100 means that the reference light and the test light give almost the same color rendering properties.
【０００６】以上から明らかなように、現行の平均演色
評価数Ｒa は、忠実な色の見えに基づく演色性評価方法
を提供している。しかしながら、演色性評価方法には、
大きく二つに大別することができる。すなわち、一つ
は、忠実な色の見えに基づく演色性評価方法であり、他
の一つは、好ましい色の見えに基づく評価方法である。
好ましい色の見えに基づく演色性評価方法は、試料光源
の色再現が基準光の色再現とくらべて色ズレを生じてい
るが、そのズレが好ましいかどうかを評価するものであ
る。As is clear from the above, the current average color rendering index Ra provides a color rendering evaluation method based on the appearance of faithful colors. However, in the color rendering evaluation method,
It can be roughly divided into two. That is, one is a color rendering property evaluation method based on a faithful color appearance, and the other is an evaluation method based on a preferable color appearance.
The color rendering evaluation method based on the preferred color appearance is to evaluate whether or not the color reproduction of the sample light source causes a color shift compared with the color reproduction of the reference light, but the shift is preferable.
【０００７】[0007]
【発明が解決しようとする課題】現在、ＣＩＥやＪＩＳ
でこの好ましい色の見えに基づく演色性評価方法は選定
されていない。しかしながら、たとえば、店舗やショー
ルームでは、そこに展示されている商品が人目につくよ
うに目立って見えることが重要である。また、住宅や応
接室では、人の顔色が健康に見えたり、美しく見えるこ
とが重要となる。[Problems to be Solved by the Invention] Currently, CIE and JIS
However, the color rendering evaluation method based on this preferable color appearance is not selected. However, for example, in a store or a showroom, it is important that the products displayed there are conspicuously visible. In addition, it is important that the complexion of a person looks healthy and looks beautiful in a house or a drawing room.
【０００８】このように、照明の用途によって、照明環
境をより適切に設定することは大切であり、その照明環
境を実現するために、照明光の好ましい色の見えに基づ
く評価を与える必要性が多くなってきた。しかしなが
ら、現在、好ましい色の見えに基づく評価数はどの光源
に対しても表示されておらず、ユーザが好ましい色の見
えに基づいて光源を選定することは不可能であった。As described above, it is important to set the lighting environment more appropriately depending on the usage of the lighting, and in order to realize the lighting environment, it is necessary to give an evaluation based on the appearance of the preferable color of the illumination light. It's getting more and more. However, at present, the evaluation number based on the preferable color appearance is not displayed for any light source, and it is impossible for the user to select the light source based on the preferable color appearance.
【０００９】本発明は上記の問題を解決するもので、好
ましい色の見えにもとづく評価のうち特に目立って見え
ることを評価する目立ち感情に基づく光源の演色性評価
手法を提供することを目的としている。The present invention solves the above problems, and an object of the present invention is to provide a color rendering evaluation method of a light source based on a noticeable emotion, which evaluates particularly noticeable appearance among evaluations based on the appearance of a preferable color. .
【００１０】[0010]
【課題を解決するための手段】上記目的を達成するため
に、本発明の演色性評価手法は、色知覚空間のブライト
ネス・カラフルネス 3次元空間内で４色配色サンプルの
各構成色の色のメトリック座標を結ぶ 4角形の面積の大
きさで目立ち感情に基づく光源の演色性を評価するよう
に構成したものである。In order to achieve the above-mentioned object, the color rendering evaluation method of the present invention uses the brightness and colorfulness of a color appearance space and the color of each constituent color of a four-color arrangement sample in a three-dimensional space. It is configured to evaluate the color rendering of the light source based on the conspicuous emotion based on the size of the square area connecting the metric coordinates.
【００１１】[0011]
【作用】本発明は上記の手法により、色彩を鮮やかに見
せる光源の演色特性を評価し、現行のCIE/JIS の色の見
えの忠実性を評価する方法と併せて用いることにより、
光源の演色特性をより明確に評価できる目立ち感情に基
づく光源の演色性評価方法が得られる。The present invention evaluates the color rendering properties of the light source that makes the colors look vivid by the above method, and by using it together with the method of evaluating the fidelity of the current CIE / JIS color appearance,
A color rendering evaluation method for a light source based on a prominent emotion that can more clearly evaluate the color rendering property of the light source is obtained.
【００１２】[0012]
【実施例】光源の演色性の変化によって、有彩色物体群
のVisual Clarityや明るさ感が変化することが数多くの
研究者によって報告されている（たとえば、S.M.Aston,
Light. Res. Tech.(1969) 259-261）。我々は、この原
因について検討し、VisualClarityや明るさ感は有彩色
物体群を構成する配色から受ける目立ち感情と密接に関
連していることを明らかにした。[Examples] Many researchers have reported that changes in the color rendering of a light source cause changes in the Visual Clarity and brightness of chromatic objects (eg, SMAston,
Light. Res. Tech. (1969) 259-261). We examined this cause and found that Visual Clarity and sense of brightness are closely related to the prominent emotions received from the color arrangements that make up the chromatic object group.
【００１３】そこで、光源の演色性の変化による目立ち
感情の変化を適切に評価できるサンプルについて評価実
験を行った。実験方法は2 つの隣接した光源ボックスを
用い、一方に基準用光源として白色蛍光ランプ、もう一
方に試料光源として各種光源を使用し、観測者に両眼隔
壁法により両ボックス内のサンプルの目立ち感が等しく
なるように試料光源用ボックス内の照度を調整した。実
験条件にはCIE/JIS で規定されている演色評価用試験色
に近似した色を使用した。なお、基準用光源のボックス
内の照度は1000 lx とした。Therefore, an evaluation experiment was conducted on a sample capable of appropriately evaluating the change of the noticeable emotion due to the change of the color rendering of the light source. The experiment method uses two adjacent light source boxes, one is a white fluorescent lamp as a reference light source, and the other is a sample light source as a sample light source. The illuminance in the sample light source box was adjusted so that As the experimental condition, a color similar to the test color for color rendering evaluation specified by CIE / JIS was used. The illuminance inside the box of the reference light source was 1000 lx.
【００１４】その結果、配色サンプルは目立ち感情の評
価方法の煩雑さを軽減すること、光源の演色性の変化に
よって目立ち感情が大きく変化し、しかも観測者が安定
して評価できることから、赤(5R4/12)、黄(5Y8.2/10)、
緑(5.5G5/8)、青(4.5PB3.2/6)の４色（CIE/JIS の光源
の演色性評価方法で用いられている特殊演色評価用試験
色のNo.9〜No.12 に近似した色）で構成した一種類の４
色配色サンプルを選定した。また、評価を安定にするた
めに4 色の配置で黄色を赤の斜めの位置に配置した。As a result, the color arrangement sample reduces the complexity of the method for evaluating the conspicuous emotion, changes the conspicuous emotion greatly due to the change in the color rendering of the light source, and allows the observer to make a stable evaluation. / 12), yellow (5Y8.2 / 10),
Four colors of green (5.5G5 / 8) and blue (4.5PB3.2 / 6) (No.9 to No.12 of the special color rendering evaluation test colors used in the color rendering evaluation method of CIE / JIS light source) 4 of a type composed of
Color scheme samples were selected. In addition, in order to stabilize the evaluation, yellow was arranged diagonally to red in a four-color arrangement.
【００１５】次に、演色性の異なる照明下での目立ち感
情を定量的に実験検討した。実験方法は上記と同様に行
い、両ボックス内のサンプルの目立ち感が等しくなるよ
うに試料光源用ボックス内の照度を調整させた。各試料
光源に対して得られた、基準用光源Ｄ65および基準照度
1000(lx)のもとでの目立ち感と等しい目立ち感となる照
度Ｅ0 で基準光の照度(1000 lx) を割ってそれを100 倍
した値を等目立ち感照度比ＥＲとして求めた。Next, the distinctive emotions under illumination with different color rendering properties were quantitatively examined. The experiment method was performed in the same manner as above, and the illuminance in the sample light source box was adjusted so that the samples in both boxes had the same noticeable feeling. Reference light source D65 and reference illuminance obtained for each sample light source
The illuminance E0 of the reference light (1000 lx) was divided by the illuminance E0 that was the same as the noticeable sensation under 1000 (lx), and the value was multiplied by 100 to obtain the equal sensation illuminance ratio ER.
【００１６】実験条件として配色サンプルは上記で選定
した4 色配色サンプルを用いた。また、試料光源は高圧
ナトリウムランプ3 種類、HID ランプ３種類、蛍光ラン
プ9種類、白熱電球2 種類を用いた。As the experimental conditions, the color arrangement samples used were the four-color arrangement samples selected above. The sample light sources used were three types of high-pressure sodium lamps, three types of HID lamps, nine types of fluorescent lamps, and two types of incandescent lamps.
【００１７】一方、目立ち感情に基づく光源の評価手法
として使用する表色系は、解析により納谷らの非線形色
知覚モデルのブライトネス(B)、カラフルネス(Mr-g,My-
b)に基づいて４色配色サンプルの目立ち感情を評価でき
ることが明らかにされているため、ブライトネスとカラ
フルネスを用いた。また、一般的に、図２の目立ち評価
の基本概念図に示される色域面積が大きくなるほどサン
プルの鮮やかさは増し、目立ちやすくなるため、ブライ
トネス、カラフルネスの３次元空間の４角形の面積の大
きさ（色域面積）で評価した。On the other hand, the color system used as the evaluation method of the light source based on the noticeable emotion is analyzed by the brightness (B) and colorfulness (Mr-g, My-
Brightness and colorfulness were used because it has been clarified that the prominent emotions of the four-color arrangement sample can be evaluated based on b). Further, in general, the larger the color gamut area shown in the basic conceptual diagram of the conspicuous evaluation in FIG. 2, the more vivid the sample becomes and the more conspicuous it becomes. Therefore, the square area of the three-dimensional space of brightness and colorfulness The size (color gamut area) was evaluated.
【００１８】ここで、配色サンプルの目立ち感情の基準
となる色は赤色である。そこで、図２に示すように赤サ
ンプルを基準とする色域面積で目立ち指数Ｍを表すこと
にした。この計算手法を（１）式に示す。（１）式のＧ
(Ｔ,Ｅ(lx)) は試料光源Ｔおよび照度Ｅ(lx)のもとでの
４色配色サンプルの色域面積を示し、Ｇ(Ｄ65,1000(l
x)) は基準光源Ｄ65および基準照度1000(lx)のもとでの
４色配色サンプルの色域面積を示し、Ｐは目立ち指数Ｍ
の尺度を規定する定数を示す。Here, the color which is the reference of the noticeable emotion of the color arrangement sample is red. Therefore, as shown in FIG. 2, the salient index M is represented by the color gamut area based on the red sample. This calculation method is shown in equation (1). G in equation (1)
(T, E (lx)) represents the color gamut area of the four-color-colored sample under the sample light source T and the illuminance E (lx), and G (D65,1000 (lx)
x)) indicates the color gamut area of the four color arrangement sample under the reference light source D65 and the reference illuminance of 1000 (lx), and P is the conspicuous index M
The constants that define the scale of are shown.
【００１９】 Ｍ＝［Ｇ(T,E(lx))／Ｇ(D65,1000(lx))］P×100 …（１） 図３は主観評価実験により得られた等目立ち感照度比Ｅ
Ｒと目立ち指数Ｍの関係を示し、横軸は目立ち指数Ｍ、
縦軸は等目立ち感照度比ＥＲである。ここで、目立ち指
数Ｍを求めるために、Ｐの値を1.6 と定めた。M = [G (T, E (lx)) / G (D65,1000 (lx))] P × 100 (1) FIG. 3 shows the equal sensation illuminance ratio E obtained by the subjective evaluation experiment.
The relationship between R and the salient index M is shown, and the abscissa is the salient index M,
The vertical axis is the uniform sensation illuminance ratio ER. Here, in order to obtain the salient index M, the value of P is set to 1.6.
【００２０】図３から明らかなように目立ち感照度比Ｅ
Ｒは高圧ナトリウムランプにおいて超高彩度形、高彩度
形、高演色形の順で低くなり、電球ではネオジウムガラ
スを用いた白熱電球の方が電球よりも高くなっている。
これに対して目立ち指数Ｍも同様の傾向を示している。
すなわち、等目立ち感照度比ＥＲと目立ち指数Ｍは相関
が高く、一対一に対応していることがわかる。すなわ
ち、このような評価手法によれば、色彩を鮮やかに見せ
る光源ほど色域面積が大きくなり、目立ち感情の効果が
大きいことを示す。As is apparent from FIG. 3, the noticeable illuminance ratio E
In the high-pressure sodium lamp, R decreases in the order of ultra-high saturation type, high-saturation type, and high color rendering type, and incandescent bulbs using neodymium glass are higher than incandescent bulbs.
On the other hand, the conspicuous index M shows a similar tendency.
That is, it can be seen that the equal sensation illuminance ratio ER and the observability index M have a high correlation and have a one-to-one correspondence. That is, according to such an evaluation method, it is shown that the color gamut area becomes larger as the light source that makes the color look more vivid, and the effect of the noticeable emotion becomes larger.
【００２１】ここでは、等目立ち感照度比ＥＲと目立ち
指数Ｍとの関係が一対一に対応するように、また、試料
光源の目立ち指数Ｍの値が基準照度1000(lx)をＭ％増加
させた場合の目立ち効果と等しくなるように、Ｐの値を
1.6 に設定し、（２）式を用いて目立ち指数Ｍを算出し
た。Here, the relationship between the equal sensation illuminance ratio ER and the observability index M has a one-to-one correspondence, and the value of the observability index M of the sample light source increases the reference illuminance 1000 (lx) by M%. The value of P should be the same as the conspicuous effect when
It was set to 1.6 and the conspicuousness index M was calculated using the formula (2).
【００２２】 Ｍ＝［Ｇ(T,E(lx))／Ｇ(D65,1000(lx))］1.6 ×100 …（２） しかし、目立ち指数Ｍとして使用する分にはＰの値を何
にしても十分に目立ち感情に基づいた光源を評価するこ
とができる。また、選定サンプルとして5R4/12,5Y8.2/1
0,5.5G5/8,4.5PB3.2/6の４色票を用いたが、それに類似
したサンプルを用いて目立ち感情に基づいた光源を評価
することはできる。また、納谷らの非線形色知覚モデル
を用いてブライトネス・カラフルネスの色空間を使用し
ているが、それに類似する表色系であれば十分に目立ち
感情に基づいた光源を評価することができる。M = [G (T, E (lx)) / G (D65,1000 (lx))] 1.6 × 100 (2) However, what is the value of P to be used as the conspicuous index M? Even so, it is possible to fully evaluate a light source based on noticeable emotions. In addition, 5R4 / 12, 5Y8.2 / 1 as selection samples
A 0,5.5G5 / 8,4.5PB3.2 / 6 four-color chart was used, but a sample similar to it can be used to evaluate a light source based on noticeable emotions. In addition, although the color space of brightness and colorfulness is used by using the non-linear color perception model of Naya et al., A color system similar to that can sufficiently evaluate a light source based on noticeable emotions.
【００２３】（実施例１）以下、図１に本発明による目
立ち指数Ｍを算出するユニットの一実施例の構成を示
す。１は基準光源Ｄ65の分光分布、２は試料光源Ｔの分
光分布、３は等色関数、４は４色配色サンプルの４色票
の分光反射率、５は試料光源下のサンプルの順応照度、
６はサンプル背景のＹ値（反射率）の情報である。入力
情報１から６を演算部７に入力することにより、基準光
源Ｄ65の分光分布１と等色関数３から基準光源Ｄ65の色
度、試料光源Ｔの分光分布２と等色関数３から試料光源
Ｔの色度、基準光源Ｄ65の分光分布１と等色関数３と４
色配色サンプルの４色票の分光反射率４からＤ65光下の
４色票のサンプルの色度、試料光源Ｔの分光分布２と等
色関数３と４色配色サンプルの４色票の分光反射率４か
ら試料光下の４色票のサンプルの色度が、それぞれ演算
部７で算出される。(Embodiment 1) FIG. 1 shows the construction of an embodiment of a unit for calculating the salient index M according to the present invention. 1 is the spectral distribution of the reference light source D65, 2 is the spectral distribution of the sample light source T, 3 is the color matching function, 4 is the spectral reflectance of the 4-color chip of the 4-color sample, and 5 is the adaptation illuminance of the sample under the sample light source,
Reference numeral 6 is information on the Y value (reflectance) of the sample background. By inputting the input information 1 to 6 into the calculation unit 7, the spectral distribution 1 of the reference light source D65 and the color matching function 3 to the chromaticity of the reference light source D65, the spectral distribution 2 of the sample light source T and the color matching function 3 to the sample light source Chromaticity of T, spectral distribution 1 of reference light source D65 and color matching functions 3 and 4
From the spectral reflectance 4 of the 4 color chart of the color arrangement sample to the chromaticity of the 4 color chart sample under D65 light, the spectral distribution 2 of the sample light source T, the color matching function 3 and the spectral reflection of the 4 color chart of the 4 color arrangement sample From the ratio 4, the chromaticity of the sample of the four-color chip under the sample light is calculated by the calculation unit 7, respectively.
【００２４】算出された基準光源Ｄ65の色度、Ｄ65光下
の４色票のサンプルの色度とＤ65光下のサンプルの順応
照度を1000 lx 、基準照度を1000 lx 、背景のＹ値を20
%として納谷らの非線形色知覚モデルに代入し、Ｄ65光
下の4 色票のサンプルのブライトネスとカラフルネスが
演算部７で算出される。同様に算出された試料光源Ｔの
色度、試料光源Ｔ下の４色のサンプルの色度、試料光下
のサンプルの順応照度５、基準照度を1000 lx 、背景の
Ｙ値を20 %として納谷らの非線形色知覚モデルに代入し
試料光下の４色票のサンプルのブライトネスとカラフル
ネスが演算部７で算出される。The calculated chromaticity of the reference light source D65, the chromaticity of the sample of the four-color chip under the D65 light and the adaptation illuminance of the sample under the D65 light are 1000 lx, the reference illuminance is 1000 lx, and the Y value of the background is 20.
Substituting it in the nonlinear color perception model of Naya et al. As%, the brightness and colorfulness of the sample of four color chips under the light of D65 are calculated by the calculation unit 7. Similarly calculated chromaticity of the sample light source T, chromaticity of the four color samples under the sample light source T, adaptation illuminance of the sample under the sample light 5, reference illuminance of 1000 lx, Y value of the background of 20% Naya The brightness and colorfulness of the sample of the four-color chip under the sample light are calculated by the calculation unit 7 by substituting them into the nonlinear color perception model.
【００２５】次にＤ65光下の４色票のサンプルのブライ
トネスとカラフルネス、および、試料光下の４色票のサ
ンプルのブライトネスとカラフルネスから赤色票サンプ
ルを基準として基準光源Ｄ65および基準照度1000 lx の
もとでの４色配色サンプルの色域面積G(D65,1000(lx))
と試料光源Ｔおよび任意の照度Ｅ(lx) のもとでの４色
配色サンプルの色域面積G(T,E(lx))が演算部７で算出さ
れる。続いてG(D65,1000(lx))とG(T,E(lx))から（１）
式に基づいて目立ち指数Ｍ８が演算部７で算出され、算
出された目立ち指数Ｍ８は演算部７から出力される。Next, from the brightness and colorfulness of the sample of four color chips under the light of D65, and the brightness and colorfulness of the sample of four color chips under the light of the sample, the reference light source D65 and the reference illuminance 1000 with the red sample as the reference. Color gamut area G (D65,1000 (lx)) of 4 color sample under lx
The color gamut area G (T, E (lx)) of the four-color color arrangement sample under the sample light source T and an arbitrary illuminance E (lx) is calculated by the calculation unit 7. Then from G (D65,1000 (lx)) and G (T, E (lx)) (1)
The salient index M8 is calculated by the computing unit 7 based on the formula, and the calculated salient index M8 is output from the computing unit 7.
【００２６】[0026]
【発明の効果】以上のように本発明によれば、色彩を鮮
やかに見せる光源の演色特性を目立ち感情に基づいて評
価でき、今後、各用途にあった照明環境を構築していく
上の重要な評価指数が得られ適切な照明環境を構築する
ことができる。As described above, according to the present invention, it is possible to evaluate the color rendering characteristics of a light source that makes colors look vivid, based on the conspicuous emotions, and it is important in the future to construct an illumination environment suitable for each application. It is possible to obtain an appropriate evaluation index and construct an appropriate lighting environment.
【図１】本発明の一実施例の光源の演色性評価手法を説
明する目立ち指数算出ユニットのブロック図FIG. 1 is a block diagram of a salient index calculation unit for explaining a color rendering evaluation method of a light source according to an embodiment of the present invention.
【図２】本発明の一実施例の光源の演色性評価手法を説
明する目立ち評価の基本概念図FIG. 2 is a basic conceptual diagram of conspicuous evaluation for explaining a color rendering evaluation method of a light source according to an embodiment of the present invention.
【図３】本発明の一実施例の光源の演色性評価手法にお
ける目立ち指数Ｍと等目立ち感照度比ＥＲの関係図FIG. 3 is a diagram showing the relationship between the conspicuousness index M and the equal conspicuousness illuminance ratio ER in the color rendering evaluation method for a light source according to an embodiment of the present invention.
１ 基準光源Ｄ65の分光分布 ２ 試料光源Ｔの分光分布 ３ 等色関数 ４ ４色配色サンプルの４色票の分光反射率 ５ 試料光下のサンプルの順応照度 ６ サンプル背景のＹ値（反射率） ７ 演算部 ８ 目立ち指数 1 Spectral distribution of reference light source D65 2 Spectral distribution of sample light source T 3 Color matching function 4 Spectral reflectance of 4 color chip of 4 color scheme sample 5 Adaptation illuminance of sample under sample light 6 Y value of sample background (reflectance) 7 Operation part 8 Conspicuous index
Claims (2)
色配色サンプルの色域面積をＧ(Ｔ,Ｅ(lx))、基準光源
Ｄ65および基準照度1000(lx)のもとでの４色配色サンプ
ルの色域面積をＧ(Ｄ65,1000(lx))、目立ち指数Ｍの尺
度を規定する定数をＰとしたとき、対象とする試料光源
Ｔおよび任意の照度Ｅ(lx)のもとでの目立ち効果を次式
の目立ち指数Ｍとして評価する演色性評価手法。 Ｍ＝［Ｇ(T,E(lx))／Ｇ(D65,1000(lx))］P×1001. A sample light source T and an illuminance E (lx) of 4
G (T, E (lx)) is the gamut area of the color arrangement sample, and G (D65,1000 (lx) is the gamut area of the four-color arrangement sample under the reference light source D65 and the reference illuminance of 1000 (lx). ), Where P is a constant that defines the scale of the prominence index M, the color rendering property for evaluating the prominence effect under the target sample light source T and arbitrary illuminance E (lx) as the prominence index M of the following equation Evaluation method. M = [G (T, E (lx)) / G (D65,1000 (lx))] P x 100
と、基準光源Ｄ65および基準照度1000(lx)のもとでの目
立ち感と等しい目立ち感となる照度Ｅ０との比の100倍
で表わされる等目立ち感照度比ＥＲと一対一に対応する
ように、また、試料光源のＭの値が、基準照度1000(lx)
をＭ％増加させた場合の目立ち効果と等しくなるよう
に、Ｐの値を1.6 に設定した次式の目立ち指数Ｍとして
評価する請求項１記載の演色性評価手法。 Ｍ＝［Ｇ(T,E(lx))／Ｇ(D65,1000(lx))］1.6×1002. The value of M of the sample light source is a reference illuminance of 1000 (lx)
And a one-to-one correspondence with the equal sensation illuminance ratio ER, which is represented by 100 times the ratio of the illuminance E0 that gives the same sensation as the observability under the reference light source D65 and the reference illuminance of 1000 (lx). Also, the value of M of the sample light source is the reference illuminance 1000 (lx)
2. The color rendering evaluation method according to claim 1, wherein the value of P is evaluated as a conspicuousness index M of the following equation in which the value of P is set to 1.6 so as to be equal to the conspicuous effect when M is increased by M%. M = [G (T, E (lx)) / G (D65,1000 (lx))] 1.6 x 100
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33391992A JPH06180248A (en) | 1992-12-15 | 1992-12-15 | Evaluation technique of color rendering properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33391992A JPH06180248A (en) | 1992-12-15 | 1992-12-15 | Evaluation technique of color rendering properties |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06180248A true JPH06180248A (en) | 1994-06-28 |
Family
ID=18271438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33391992A Pending JPH06180248A (en) | 1992-12-15 | 1992-12-15 | Evaluation technique of color rendering properties |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06180248A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0865071A2 (en) | 1997-03-13 | 1998-09-16 | Matsushita Electric Industrial Co., Ltd. | Warm white fluorescent lamp |
| JP2011145274A (en) * | 2009-12-16 | 2011-07-28 | Hioki Ee Corp | Photometric device |
| JP2013239241A (en) * | 2012-05-11 | 2013-11-28 | Panasonic Corp | Illuminating device |
| JP2014032228A (en) * | 2012-08-01 | 2014-02-20 | Kinki Univ | Method for evaluating visibility of ocular lens |
| WO2014076948A1 (en) * | 2012-11-16 | 2014-05-22 | パナソニック株式会社 | Lighting apparatus and light emitting apparatus |
-
1992
- 1992-12-15 JP JP33391992A patent/JPH06180248A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0865071A2 (en) | 1997-03-13 | 1998-09-16 | Matsushita Electric Industrial Co., Ltd. | Warm white fluorescent lamp |
| US6157126A (en) * | 1997-03-13 | 2000-12-05 | Matsushita Electric Industrial Co., Ltd. | Warm white fluorescent lamp |
| JP2011145274A (en) * | 2009-12-16 | 2011-07-28 | Hioki Ee Corp | Photometric device |
| JP2013239241A (en) * | 2012-05-11 | 2013-11-28 | Panasonic Corp | Illuminating device |
| JP2014032228A (en) * | 2012-08-01 | 2014-02-20 | Kinki Univ | Method for evaluating visibility of ocular lens |
| WO2014076948A1 (en) * | 2012-11-16 | 2014-05-22 | パナソニック株式会社 | Lighting apparatus and light emitting apparatus |
| JP5870312B2 (en) * | 2012-11-16 | 2016-02-24 | パナソニックＩｐマネジメント株式会社 | Lighting device and light emitting device |
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