Optical pickup device, recording and reproducing apparatus...

Details Optical pickup device, recording and reproducing apparatus... Optical pickup device, recording and reproducing apparatus...

2007-04-17

2008-08-19

Feild, Joseph (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112210, C369S112230, C369S120000

Reexamination Certificate

active

07414947

ABSTRACT:
An optical pickup device and an optical recording and reproducing apparatus are suitable for use with a near-field optical recording and reproducing system. An optical pickup device comprises an objective lens composed of a solid immersion lens (SIL) the objective lens having a numerical aperture greater than 1, a beam splitter configured to reflect both of a p-polarized light component and an s-polarized light component of reflected lights from an optical recording medium when the optical pickup device irradiates the optical recording medium with a bundle of rays in a predetermined polarized state from a light source through the objective lens, a divider configured to divide incident light into a p-polarized light component and an s-polarized light component reflected by the beam splitter, and a photo-detector configured to separately detect the p-polarized light component and the s-polarized light component divided by the divider.

REFERENCES:
patent: 4993011 (1991-02-01), Torazawa et al.
patent: 4995724 (1991-02-01), Sonobe et al.
patent: 5033828 (1991-07-01), Haruta
patent: 5577017 (1996-11-01), Yamamoto et al.
patent: 6298026 (2001-10-01), Suzuki et al.
patent: 6473385 (2002-10-01), Salto
patent: 7230902 (2007-06-01), Saito et al.
patent: 1 031 976 (2000-08-01), None
patent: 1 083 553 (2001-03-01), None
patent: WO 99/41566 (1999-08-01), None

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