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 mentioned: being a cheap bastard and loving employed electronics, I have experienced poor luck with Refurbished things usually. Refurbished to me normally usually means it had ... https://coingenius.news/pokemon-go-developer-niantic-teases-a-see-through-headset/