Blu-ray, also known as Blu-ray Disc™ (BD), is the name of the next-generation optical disc format that was jointly developed by a group of the world's leading consumer electronics, personal computer, and media manufacturers. The format was developed to enable recording, rewriting, and playback of high-definition video, as well as storing large amounts of data.
The name Blu-ray is derived from the underlying technology, which utilizes a blue-violet laser to read and write data. The name is a combination of "Blue" (blue-violet laser) and "Ray" (optical ray).
The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. This extra capacity combined with the use of advanced video and audio codecs offers an unprecedented HD experience.
With 1080p picture quality and much higher resolution audio, Blu-ray technology comes considerably closer to the resolution of film and modern digital cinema sources than older home theater media. With Blu-ray technology, movie studios, directors, sound engineers and others in the industry can show their work the way it was meant to be seen.