Blu-ray and DVD both are high definition, high storage devices.
Following are the important differences between Blu-ray and DVD.
|1||Definition||Blu-ray disk uses blue optical ray which makes its name as Blu-ray.||DVD stands for Digital Versatile Disk.|
|2||Size||Blu-ray single layer size is 25 GB.||DVD single layer size is 4.7 GB.|
|3||Recording Layer||Recording layer or metal layer is close to reading mechanism's objective lens.||Recording layer or metal layer is close to middle of the disk.|
|4||Pits||Blu-ray have double layers of pits.||DVD too have double layers of pits.|
|5||Space between loops||Space between spiral loops is 0.30 micrometer in Blu-ray.||Space between spiral loops is 0.74 micrometer in DVD.|
|6||Space between pits||Space between pits is 0.15 micrometer in Blu-ray.||Space between pits is 0.40 micrometer in DVD.|
|7||Correction code||Picket Code is used as error correction code.||RS-PC and EFMplus are used as error correction code.|
|8||Wavelength||Wavelength of laser is 405nm.||Wavelength of laser is 650nm.|
|9||Data Transfer Rate||Data Transfer Rate is 36 Mb/Sec.||Data Transfer Rate is 11 Mb/Sec.|
|10||Size||Double Layer Size is 50 GB.||Double Layer Size is 8.5 GB.|
|11||Numeric Aperture||Numeric Aperture of Blu-ray is 0.8.||Numeric Aperture of DVD is 0.6.|
|12||Thickness||Blu-ray thickness is 1.1 mm.||DVD thickness is 0.6 mm.|