...A concave lens is placed in the center, and convex lenses are placed in front and behind it at a distance, allowing correction of spherical aberration, coma, chromatic aberration, etc. while maintaining the flatness of the image plane. (2) Tessar type lens This lens type was invented by Rudolph of Zeiss in 1903, and is still widely used today mainly in mid-range cameras. In terms of structure, the third lens group of a triplet can be seen as a combination of concave flint glass and convex crown glass. ... *Some of the terminology explanations that mention "tessar type lens" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…中央に凹レンズを置き,凸レンズを間隔をとりながらその前後に置いたもので,像面の平たん性を確保しながら球面収差,コマ収差および色収差などの補正ができる。(2)テッサータイプレンズtessar type lens 1903年ツァイス社のルドルフの創始になるレンズタイプで,現在でもおもに中級カメラに多用されている。構成からいえばトリプレットの第3群レンズを,凹のフリントガラス,凸のクラウンガラスのはり合せにしたものと見ることができる。… ※「tessar type lens」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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