Blu-ray or Blu-ray Disc (BD for short) uses blue laser with short wavelength (405 nm) to read and write data, hence its name. However, the traditional DVD requires the optical head to emit red laser (wavelength is 650nm) to read or write data. Generally speaking, the shorter the wavelength, the more information can be recorded or read per unit area. Therefore, Blu-ray has greatly improved the storage capacity of optical discs. For optical storage products, Blu-ray provides a leap-forward development opportunity.

Up to now, Blu-ray is the most advanced large-capacity optical disc format. With the great progress of BD laser technology, you can store 25GB document files on a CD. This is five times that of the existing (single disc) DVD. In terms of speed, Blu-ray allows a recording speed of 1 to 2 times or 4.5 to 9 megabytes per second.

Blu-ray disc has a strong protective layer, which can protect the important recording layer in the disc. Philips Blu-ray Disc adopts advanced vacuum bonding technology to form a uniform thickness of 100? The security layer of m. Philips Blu-ray Disc can withstand frequent use, fingerprints, scratches and dirt to ensure the storage quality and data security of Blu-ray products.

Technically, the Blu-ray recorder system can be compatible with various optical disc products that appeared before. The huge capacity of Blu-ray products provides the possibility and convenience for high-definition movies, games and large-capacity data storage. It will greatly promote the development of high-definition entertainment. At present, Blu-ray technology has been supported by more than 170 large game companies, film companies, consumer electronics and home computer manufacturers around the world. Seven of the eight major film companies: Disney, Fox, Paramount, Warner, Sony, MGM and Lionsgate.

As early as 1998, Philips and Sony took the lead in publishing the technical papers of the next generation optical disc, and began to develop the technical scheme of realizing 23 GB ~ 25 GB on one side and single layer, which brought a surprise to the industry.

On February 19, 2002, with Sony, Philips and Panasonic as the core, Hitachi, Pioneer, Samsung, LG, Sharp and Thomson * * * jointly released the 0.9 version of Blu-ray Disc (BD for short) technical standard. Blu-ray means Blu-ray, so February 19 officially showed the birth of the next generation DVD candidate-Blu-ray Disc.

BD Group then officially released the BD specification version 1.0 on June 4th, 2002, with a volume of *** 3 * * 5000 USD, which indicates that the design of BD has been completely established.

Although there has always been a dispute between BD and HDVD about who will be the next generation Blu-ray storage standard, it has also prompted the two companies to innovate and carry out technological reforms. In 2003, Blu-ray laser heads reached the mass production level, but in 2006, Blu-ray products suitable for the market began to appear.

In 2006, Sony, Pioneer and Samsung all released their own Blu-ray technologies and Blu-ray products, and all put forward their own Blu-ray plans. In the China market, on July 6th, 2006, BenQ took the lead in launching its molded blue light products. It can be said that 2006 is the real "first year of Blu-ray".