2004•Japanese Journal of Applied PhysicsRequires access
Blu-ray Disc/Digital Versatile Disc Recording and Reproducing Compatible Use Technology in the 2nd Generation Pick Up for Blu-ray Disc
Ichiro Morishita, Hiroyuki Shindo, Noriyoshi Takeya, Ho-Seop Jeong, Yong-Han Yoon, Incheol Chang, Hyungjin Kim, Dongwoo Lee, Chon-Su Kyong
Open publisher page 2 citations
Abstract
We developed a 2nd generation pick up for the Blu-ray disc (BD), which makes possible recording and reproducing on both BD and digital versatile disc (DVD), and has a size for audio and visual (AV) and personal computer (PC) applications. These properties are realized by a single objective lens and a newly developed hologram element. The next generation optical disc system, which is expected to enable over 15 GB recording and reproducing on an optical disc, is also expected to record and reproduce on DVD or compact disc (CD), using one pick up. In order to satisfy such demand, we have developed an objective lens with a long working distance and proposed a BD/DVD/CD compatible use technology. This paper reports the details of how we achieved a proper sized AV/PC for common use, BD/DVD recording and reproducing compatible use and the dual layer disc in the 2nd generation pick up for BD.