Abstract
We describe techniques that have been used to realize a CD, CD-R and CD-RW compatible DVD-RAM pickup. One objective lens having two aspherical surfaces can be used to read both DVDs and CDs. Chromatic aberration of beam shaping prism which resulted from reading/writing laser power change can be corrected by combining two prisms. And a holographic optical element (HOE) can be used to reduce push-pull tracking offset by detector deviation.
© 1998 Optical Society of America
PDF ArticleMore Like This
Jin-Yong Kim
WD.1 Optical Data Storage (ODS) 1998
N. Takahashi, H. Sato, H. Osawa, K Nagai, H. Isobe, and I. Kasuga
OThC.5 Symposium on Optical Memory (ODS) 1996
K. Tatsuno, M. Tokuda, R. Mita, T. Tanaka, T. Shimano, T. Andou, S. Nakamura, K. Arikawa, and K. Shigematsu
TuE1_2 Conference on Lasers and Electro-Optics/Pacific Rim (CLEO/PR) 2001