先锋展示400GB的16层蓝光碟光盘技术

Comparison of main specifications between BD and Pioneer's super multi-layer

Specification

BD

Pioneer's super multi-layer

Storage capacity and number of layers

25GB for single layer; 50GB for double layers

400GB for 16 layers; 500GB for 20 layers under development

Material of reflective layers

Metallic

Dielectric

Track pitch

25nm

10&14nm

PUH

405nm, 0.85

405nm, 0.85