Blu-ray disk specification

Bu-ray disc is a high density optical disk format for the storage of digital information, including high definition video.

The name blu-ray Disc is derived from the blue-violet laser used to read and write this type of disk. Because of its shorter wavelength of 405nn, substantially more data can be stored on a Blu-ray disk than on the DVD format, which uses a red 605nn laser. A single layer Blu-ray disk can store 25 GB, over five times the size of a single layer DVD at 4.7 GB. A dual layer Blu-ray disc can store 50 GB almost six times more than the size of a dual layer DVD at 8.5 GB

[one_fourth]Parameters

• Storage Capacity
• Laser Wavelength
• Numerical Aperture
• Disc Diameter
• Disc Thickness
• Protection Layer
• Hard Coating
• Track Pitch
• Data transfer rate (Data)
• Data transfer rate(Audio/Video)
• Max Video Resolution

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[one_fourth]Blu-ray

• 25 or 50Gb
• 405 nn(Blue Laser)
• 0.85
• 120mm
• 1.2mm
• 0.1mm
• Yes
• 0.32um
• 36.0 Mbps
• 54.0 Mbps
• 1920 x 1080

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[one_fourth]DVD

• 4.7 or 8.5 GB
• 650nn
• 0.60
• 120mm
• 1.2mm
• 0.6mm
• No
• 0.74um
• 11.08 Mbps
• 10.08 Mbps
• 720 x 480 / 720

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[one_fourth_last]HD-DVD

• 15 GB or 30 GB
• 405nn
• 0.65
• 120mm
• 1.2mm
• 0.6mm
• No
• 0.40um
• 34.55 Mbps
• 36.55 Mbps
• 1920 x 1080

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