JVC Develops Small Lens for Use in Portable Blu-ray Devices
Posted October 13, 2004 12:00 AM by Marwin
JVC, also known as Victor Company of Japan, announced today that it has developed the world's first single lens with a numeric aperture of 0.95. The ultra-small lens has a focal length of 0.75mm, and is 1.2mm in thickness and 2.1mm in diameter, about 25% smaller in lens surface area than the smallest Blu-ray Disc system lens (NA of 0.85) the company has already developed. In principle, the new lens can boost the capacity of a 12cm-diameter single-layer disc to more than 40GB of data. The small lens will enable the development of smaller BD/DVD/CD compatible optical pickups, as well as portable Blu-ray players and other mobile devices.