Last Updated
：2025/11/29
Cooke triplet
Noun
historical
Japanese Meaning
(歴史的) 中央に負の屈折率を持つフリントガラス製のレンズ要素があり、その両側にクラウンガラス製の要素が配置された写真用レンズ
（ plural ）
Quizzes for review
(historical) A photographic lens comprising a negative flint glass element in the centre with a crown glass element on each side.
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Cooke triplet
The antique camera's Cooke triplet produced surprisingly sharp images despite its simple three-element design.
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The antique camera's Cooke triplet produced surprisingly sharp images despite its simple three-element design.
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