Ducos du Hauron, L. (English spelling) Ducos du Hauron L

Japanese: Ducos du Hauron,L.(英語表記)DucosduHauronL
Ducos du Hauron, L. (English spelling) Ducos du Hauron L

...Additive color photography requires a complicated process of three-color separation, and one-shot cameras capable of simultaneous three-color separation were developed to solve this problem, but they are rarely used today due to the inconvenience of projection and the lack of quality of the reproduced color image. Subtractive color photography is a method proposed and patented by the Frenchman Louis Ducos du Hauron (1837-1920) in 1869 based on his experiments with subtractive color mixing. It reproduces the color image of a subject by mixing the three primary colors of subtractive color mixing, cyan, magenta, and yellow, in appropriate proportions. As mentioned above, the three primary colors of subtractive color mixing are complementary to the three primary colors of additive color mixing, and cyan dye absorbs the red component of white light, magenta dye absorbs the green component, and yellow dye absorbs the blue component, reproducing various colors depending on the amount of absorption. ...

*Some of the terminology that mentions "Ducos du Hauron, L." is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…加色法カラー写真は3色分解の過程が複雑であり,この解決のため3色分解が同時に行えるワンショットカメラなども開発されたが,投影が不便であったり再現色彩像の画質に不満があったりして,現在ではほとんど用いられていない。 減色法カラー写真は,フランスのデュコー・ドゥ・オーロンLouis Ducos du Hauron(1837‐1920)が減法混色の実験に基づき提案し特許を得た方式(1869)で,減法混色の三原色であるシアン,マゼンタ,イェローの色素を適当な割合で混合することにより被写体の色彩像を再現するものである。前述のように,減法混色の三原色は加法混色の三原色の補色であり,シアン色素は白色光中の赤色成分,マゼンタ色素は緑色成分,イェロー色素は青色成分を吸収し,その吸収量の多少によりさまざまな色を再現する。…

※「Ducos du Hauron,L.」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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