I bought a blu-ray disc recorder made by Sharp via Amazon.co.jp. It cost 36,446 yen ($343.83 €266.03). I use a Sharp TV in my house. A Sharp recorder works with a Sharp TV well together, so I bought the Sharp recorder.
Blu-ray disc recorders use blue LED laser light to read the data on the disc.
Today, blue LED inventor, Dr. Nakamura was given The Nobel Prize in Physics.