菲涅耳透镜 fēiniè'ěrtòujìng Fresnel lens Definitions Defs Origin Strokes Stroke Words Sentences Sents 菲 fēi phonetic 涅 niè phonetic 耳 ěr phonetic 透镜 透鏡 tòujìng lens An optical component made of transparent material like glass or crystal that refracts light; usually classified into 凸透镜 tūtòujìng and 凹透镜 āotòujìng
