Optical recording apparatus and optical head

Details Optical recording apparatus and optical head Optical recording apparatus and optical head

2005-10-24

2009-06-23

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

Reexamination Certificate

active

07551538

ABSTRACT:
To provide an optical recording apparatus capable of effectively suppressing useless fixation to an information-unrecorded area during a fixing process with a simple structure, and an optical head. Upon recording information, a movable lens of an expander lens104is positioned in an information recording position. In an information fixing process, the movable lens of the expander lens104is positioned in a fixing-process position. In this case, a range of irradiation to the recording medium with the data light becomes somewhat wider than that in the information recording process. Accordingly, it is possible to fix the information to an area irradiated with the data light in the information recording process without fail. In addition, the irradiation range is only somewhat wider than that in the information fixing process, making it possible to minimize the region uselessly subjected to the fixing process.

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patent: 6961161 (2005-11-01), Tsukagoshi et al.
patent: 2002/0015376 (2002-02-01), Liu et al.
patent: 2005/0083799 (2005-04-01), Horimai
patent: 10-124872 (1998-05-01), None
patent: 11-016374 (1999-01-01), None
patent: 11-133843 (1999-05-01), None
patent: 2000-338846 (2000-12-01), None

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