Bluraytehnoloogia

Blu-ray technology, often shortened to Blu-ray, is a digital optical disc storage format. It was designed to supersede the DVD format, capable of storing much larger amounts of data thanks to the use of a blue-violet laser with a shorter wavelength than the red laser used by DVDs. The typical Blu-ray disc can hold 25 GB of data, while a dual-layer disc can hold 50 GB.

The development of Blu-ray was led by the Blu-ray Disc Association (BDA), a consortium of companies including Sony, Philips, and Panasonic. The format was officially launched in 2006. Its primary application is for storing high-definition video, such as 1080p resolution movies. Blu-ray discs also offer advanced interactive features and supplementary content.

Compared to DVD, Blu-ray provides significantly higher video and audio quality. This includes higher resolutions, a wider color gamut, and uncompressed audio formats like Dolby TrueHD and DTS-HD Master Audio. The larger storage capacity also allows for more detailed video encoding and more extensive bonus features.

While Blu-ray gained widespread adoption for movies and gaming consoles like the PlayStation 3 and PlayStation 4, its market has faced competition from digital distribution and streaming services. Despite this, Blu-ray remains a popular choice for collectors and audiophiles seeking the highest possible media playback quality.