| 释义 |
Fresnel lens【计】 菲涅耳透镜 Fresnel lens Fres.nel lens AHD: [fr…-nµl“] D.J. [fr*6nel]K.K. [fr*6nWl]n.（名词）A thin optical lens consisting of concentric rings of segmental lenses and having a short focal length, used primarily in spotlights, beacons, and the headlights of motor vehicles.菲涅耳透镜：一种由一系列同心的简单透镜截面组成并且焦距短的薄透镜，主要用在聚光灯灯塔或机动车头灯语源:After Augustin Jean Fresnel 源自 奥古斯丁·简 Fresnel |