Optical pickup unit

Details Optical pickup unit Optical pickup unit

2006-06-15

2009-11-10

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112160, C369S044320, C369S044370

Reexamination Certificate

active

07616550

ABSTRACT:
An optical pickup unit is disclosed that comprises a first light-emitting element capable of emitting first-wavelength light; a second light-emitting element capable of emitting second-wavelength light whose wavelength is different from that of the first-wavelength light; a polarizing mirror transmitting or reflecting the first-wavelength light and reflecting the second-wavelength light; a first objective lens converging the first-wavelength light on a first medium; and a second objective lens converging the first-wavelength light or the second-wavelength light on a second medium.

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Matsubayashi JP 11-120606 Abstract only.

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