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。 Now, that reported: remaining a cheap bastard and loving used electronics, I've experienced terrible luck with Refurbished things generally. Refurbished to me frequently indicates it abs... https://coingenius.news/from-outdated-metaverse-investments-to-emerging-copyright-trends-a-comprehensive-analysis-of-current-blockchain-dynamics/