Objective lens and optical pickup device

Details Objective lens and optical pickup device Objective lens and optical pickup device

2006-12-19

2006-12-19

Hindi, Nabil (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S044120

Reexamination Certificate

active

07151736

ABSTRACT:
An objective lens for converging light onto an information recording medium includes a refracting interface for converging an incident light into a convergent light, and a refractive index varying member disposed between the refracting interface and the information recording medium, and having a refractive index that is varied according to an externally applied voltage.

REFERENCES:
patent: 5513158 (1996-04-01), Ohsato
patent: 6940798 (2005-09-01), Noborimoto et al.
patent: 32 10629 (1982-10-01), None
patent: 10-020263 (1998-01-01), None
patent: 2002-150598 (2002-05-01), None
patent: WO 01/24174 (2001-05-01), None

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