...It is said that the Italian Giovanni Battista Amici (1786-1863) first put a plano-convex lens at the tip of the objective lens, with the flat side of the lens facing the object. The discovery of the important abrupt point for obtaining an image without coma aberration is said to have been made by the Englishman Joseph Jackson Lister (1786-1869), but this was later theorized by E. Abbe as the sine condition for eliminating coma aberration. The elimination of chromatic aberration that occurs in objective lenses is also a major problem, and this point is also common to telescopes. In the past, it started with achromats, which were two-color achromatic lenses made by combining crown glass and flint glass, and with the development of optical materials, it has reached the modern apochromatic lenses, which have sufficient correction of chromatic aberration for three colors. ... *Some of the terminology that mentions "Lister, JJ" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…対物レンズの先端に平凸レンズを,物体側にレンズの平面側をおいて配置するのはイタリアのアミチGiovanni Battista Amici(1786‐1863)に始まるとされている。またコマ収差のない像を得るための重要な不遊点の発見はイギリスのリスターJoseph Jackson Lister(1786‐1869)によるといわれているが,これは後にE.アッベによってコマ収差除去のため正弦条件として理論化された。 対物レンズで発生する色収差の除去も大きな問題であり,この点も望遠鏡と共通しているが,古くはクラウンガラスとフリントガラスの組合せによる2色の色消し,いわゆるアクロマートから始まり,光学材料の発達にともない,現代の3色について色収差の十分に補正されたアポクロマートレンズにまで到達するのである。… ※「Lister,J.J.」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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