円えん柱ちゅうレンズ

noun

cylindrical lens

A lens with a cylindrical surface, used to focus light into a line rather than a point. Common in optics and laser applications.

• 円えん柱ちゅうレンズはレーザー光こうを線せん状じょうに集しゅう光こうするために使つかわれる。

  A cylindrical lens is used to focus laser light into a line.