High Density, Blue Laser Rewritable Optical Disc System adopting 0.3 mm-thick Plastic Substrate

摘要

Continuing demands for higher-capacity optical disc storage system become even stronger as High-Definition TV Broadcasting and Internet are creating new needs for data storage. Recently, high density optical disc systems using blue laser diodes have been reported as potential candidates for next generation industry-standard. At ISOM/ODS' 99, we have proposed to reduce substrate thickness to 0.3 mm, and showed its potential advantage by read-out test using blue laser diode. Later, we reported experimental results of read-only and rewritable disc systems based on the 0.3 mm plastic injection-molded substrate. In this paper, we will report on some of the new features of our blue wavelength system as well as the technical progress we have achieved so far.