It was jointly developed by the Blu-ray Disc Association (BDA), which is an association of leading manufacturers of electronics, computers and media, and include companies like Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson.

The blue laser has a wavelength of 405 nanometers, which is shorter than that of red laser, which has a wavelength of 650 nanometers. This allows the laser to focus with great precision. Therefore, data can be stored more efficiently in less space and as a result the storage capacity of the disc increases. Single layered disc can store data of up to 27 GB, while a double layered disc can store a massive 50 GB.  

The data in a Blu-ray disc is placed on top of a polycarbonate layer, which is around 1.1 mm in thickness, and this is the reason why there is no problem associated with readability. In addition, the recording layer is placed quite close to the lens of the reading mechanism and this helps to do away with any problems associated with the tilting of the disc.

The outside portion of the disc is coated with a hard and protective coating, which prevents the disc from getting any scratches.

The rate of data transfer in Blu-ray is higher than the DVDs, which have 10 Mbps compared to Blu-ray's 36 Mbps. A Blu-ray disc can record 25 GB of data is just about 90 minutes. Also, each Blu-ray disc has been encrypted in a unique manner, and this prevents the disc not only from being pirated, but also from any copyright violations.

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