蓝光和DVD之间的区别
蓝光和DVD都是高清，高存储设备。
以下是蓝光和DVD之间的重要区别。
Blu-raydiskusesblueopticalraywhichmakesitsnameasBlu-ray.Blu-raysinglelayersizeis25GB.Recordinglayerormetallayerisclosetoreadingmechanism'sobjectivelens.Blu-rayhavedoublelayersofpits.Spacebetweenspiralloopsis0.30micrometerinBlu-ray.Spacebetweenpitsis0.15micrometerinBlu-ray.PicketCodeisusedaserrorcorrectioncode.Wavelengthoflaseris405nm.DataTransferRateis36Mb/Sec.DoubleLayerSizeis50GB.NumericApertureofBlu-rayis0.8.Blu-raythicknessis1.1mm.