Blu-ray Disc
 
U-TECH Launched Blu-ray disc 25/50 Production in Q3 2008
  The structure of Blu-ray disc
 

U-TECH offers turnkey Blu-ray disc 25/50 in house production service including compression, editing, authoring, replication, printing material, packaging, warehousing,etc. U-TECH will lead you into this revolutionary new format of Blu-ray century.  

  The structure of BD
 

 

  BD Physical Specification
 
Parameters Specification
Format single layer
dual layer
Volumn 25 GB/50GB
Outer diameter/Thickness 120 ±0.30 mm 
0.1mm(bonding layer)+1.1mm(space layer)
Track Pitch/span 0.32 um
Redial Deviation 0.80 degree(Normal environment test) 
±0.70 degree(sudden change environment test)
Tangential Deviation ±0.30 degree
Reflectivity 35%~70% (single layer)
12%~28% (dual layer)
Thickness of bonding layer between the layers 25 ± 5 um
Jitter L0: 6.5% L1: 8.5% max
Wave length of laser diode 405nm
Numerical Aperture 0.85
 

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