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Conferences > ODS > 1998 > TuD > TuD.6

Investigation of the optical system using the Lissajous patterns of the DVD-RAM disk

Yong Jae Lee, Pyong Yong Seong, Byung Ryul Ryu, Yong Hoon Lee, Tae Kyung Kim, Jang Hoon Yoo, Seok Jung Kim, Yong Ki Son, and Chul Woo Lee

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Abstract

We have been developing the optical pickup to record and reproduce various data on DVD-RAM disks. Regarding the objective lens of high numerical aperture and laser diode of short wavelength used for DVD-RAM compare to those of CD, it is very important for DVD-RAM disk to verify the degree of disk tilt and defocus under the operating condition because the signal quality including the recording characteristics are greatly influenced according to disk tilt and defocus.[1]

© 1998 Optical Society of America

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