蓝光(Blu-ray),又称为蓝光光盘(Blu-rayDisc,缩写为BD),是利用波长较短的蓝色激光(波长405nm)读取和写入数据,因此得名。激光刻录原理光盘存储属于非磁性记录介质,经激光照射后,光盘表面可形成小凹坑——光盘表面介质的吸光能力强,熔点低,在激光束的照射下,其照射区域由于温度升高而被熔化,在介质膜张力的作用下熔化部分被拉成一个 Blu-ray, also known as Blu-ray Disc (BD), is named for its ability to read and write data using a shorter wavelength blue laser (wavelength 405 nm). Laser recording principle Disc storage is a non-magnetic recording medium, the laser irradiation, the surface of the disc can be formed small dimple - CD medium surface absorption capacity, low melting point, the laser beam irradiation, the irradiation area due to temperature rise It is melted and the melted part is drawn into one under the tension of the dielectric film