Optical pickup for recording to dual-layer 2x-speed Blu-ray disc, DVD, and compact disc

Toshiyasu Tanaka; Kousei Sano; Kenji Matsumura; Hidenori Wada; Keiichi Matsuzaki; Kanji Wakabayashi; Yoshiaki Komma

doi:10.1117/12.692279

22 June 2006 Optical pickup for recording to dual-layer 2x-speed Blu-ray disc, DVD, and compact disc

Toshiyasu Tanaka, Kousei Sano, Kenji Matsumura, Hidenori Wada, Keiichi Matsuzaki, Kanji Wakabayashi, Yoshiaki Komma

Proceedings Volume 6282, Optical Data Storage 2006; 62822C (2006) https://doi.org/10.1117/12.692279
Event: Optical Data Storage 2006, 2006, Montréal, Canada

Abstract

An ordinary half-height size optical pickup with high light-use efficiency for Blu-ray Discs (BDs) has been realized. It has two objective lenses arranged tangentially. Although one of the objective lenses, BD objective lens, does not follow the line that passes thorough the center of the spindle motor, stable tracking-error detection has been achieved by enhancing a one-beam method. This pickup has a beam shaper which changes a divergent angle of light with high magnification. Although beam shapers are sensitive to a positional error, our pickup accomplished stable positioning by introducing a new structure.

Citation Download Citation

Toshiyasu Tanaka, Kousei Sano, Kenji Matsumura, Hidenori Wada, Keiichi Matsuzaki, Kanji Wakabayashi, and Yoshiaki Komma "Optical pickup for recording to dual-layer 2x-speed Blu-ray disc, DVD, and compact disc", Proc. SPIE 6282, Optical Data Storage 2006, 62822C (22 June 2006); https://doi.org/10.1117/12.692279

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