Abstract

A Digital Video Disc (DVD) is expected to play a significant role in the coming multimedia era. In the beginning of developing a high density optical disc applicable to a DVD, basic factors of an optical disc are reconsidered free from accepted idea to prove the ideal figure. First of all disc thickness was reconsidered and optimized to choose 0.6 mm¹⁾. That is because a higher NA objective lens can be used without increasing of aberration caused by disc tilt. A high efficiency data format suitable for 0.6 mm discs has been also developed. As the result a DVD having 5 GB of user capacity in CD size has been achieved. This DVD can contains more than 140 minutes of video signal with the same quality as the conventional analogue video discs.

© 1996 Optical Society of America