Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Reexamination Certificate
2008-05-13
2008-05-13
Wellington, Andrea (Department: 2627)
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
C369S112260
Reexamination Certificate
active
10454838
ABSTRACT:
A compatible optical pickup compatibly using a high density recording medium and at least one low density recording medium, includes an objective lens to form a light spot suitable for use on a recording surface of the high density recording medium by focusing a corresponding incident light beam with a high NA suitable for the high density recording medium and a light spot suitable for use on another recording surface of the low density recording medium by focusing another corresponding incident light beam, and an actuator provided to apply tilt to the objective lens. The light beam for the low density recording medium is incident on the objective lens as a divergent beam. When the objective lens is shifted in a radial direction, a tilt is applied to the objective lens corresponding to the shift.
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Ahn Young-man
Chung Chong-sam
Kim Jong-bae
Kim Seok-jung
Kim Tae-kyung
Battaglia Michael V
Samsung Electronics Co,. Ltd.
Stein, McEwen & Bui LLP
Wellington Andrea
LandOfFree
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