菲涅尔镜片又称螺纹透镜，镜面上刻录了大小不一的螺纹。上一代主流会采用菲涅尔镜片因为这样透镜更薄更轻，厚度很薄，通常只有几毫米，重量也大大减轻。使用螺纹镜片会有一定的牺牲，因为螺纹会影响曲率和光线聚焦。 mjs warlord reported: And new games i search for outdated ones that i never ever obtained round to buying and you can find them at really silly selling prices. They might be previous but... https://coingenius.news/top-analyst-says-xrp-bull-rally-has-barely-started-why-he-envisions-2017-style-price-boom-coming/