Optical pickup apparatus

Details Optical pickup apparatus Optical pickup apparatus

2011-05-31

2011-05-31

Haley, 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

Reexamination Certificate

active

07952980

ABSTRACT:
An optical-pickup apparatus comprising: a polarization beam splitter fixed to a base, which includes a first prism that laser light emitted from a laser diode enters, a second prism that return light of the laser light reflected from a signal recording layer of an optical disc enters, and a control film that is formed on either one of opposed surfaces of the first and second prisms so that the laser light and the return light are selectively passed through or reflected from the control film, the opposed surfaces being opposed to each other; and first and second positioning pins provided on the base to position the polarization beam splitter, the polarization beam splitter being fixed to the base in a state where the opposed surface of at least one of the first and second prisms is made in contact with at least one of the first and second positioning pins.

REFERENCES:
patent: 5418769 (1995-05-01), Inoue
patent: 5428596 (1995-06-01), Hineno et al.
patent: 5477386 (1995-12-01), Okuda et al.
patent: 2004/0013078 (2004-01-01), Nagashima et al.
patent: 2006-099875 (2006-04-01), None

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