Dynamic optical information storage or retrieval – Dynamic mechanism optical subsystem – Optical storage medium support
Reexamination Certificate
2007-11-20
2007-11-20
Chen, Tianjie (Department: 2627)
Dynamic optical information storage or retrieval
Dynamic mechanism optical subsystem
Optical storage medium support
Reexamination Certificate
active
10853909
ABSTRACT:
There is disclosed a high precision positioning apparatus capable of realizing accurate positioning of a recording medium with respect to an optical system by minute movement at a relatively low cost. The high precision positioning apparatus comprises a driving unit1for minutely moving a flat-plate shaped recording medium10, which records/reproduces information using light, with respect to an optical system in an in-plane direction of the recording medium10. The driving unit1comprises a frame-shaped unit body2, a first drive frame3accommodated inside the unit body2, and a second drive frame4accommodated inside the first drive frame3and fixed in the vicinity of a recording portion11of the recording medium10. The first drive frame3freely moves with respect to the unit body2by means of micro-driving elements5in an in-plane direction of the recording medium10, and the second drive frame4freely moves with respect to the first drive frame3by means of micro-driving elements5in an in-plane direction of the recording medium10, in a direction substantially perpendicular to the direction in which the first drive frame3moves. Therefore, the recording medium10is minutely moved in an in-plane direction thereof.
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Alps Electric Co. ,Ltd.
Beyer & Weaver, LLP
Chen Tianjie
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