Actuator device, optical disk device, and information playback device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYouichi Maehara, Kazuhisa Ide, Nobuo Jikuya, Tsuyoshi Kakuta
Life of this patent
Estimating the term…
Abstract
An actuator device, an optical disk device and an information playback device comprising: an objective lens for focusing a light on a recording and/or playback face of a recording medium; a lens holder for holding the objective lens; a suspension for elastically supporting the lens holder; and an actuator base for supporting the suspension. The lens holder has a portion on the opposite side in the optical axis of the objective lens with respect to the actuator base.
Claims18
An actuator device comprising:
- an objective lens for focusing a light on a recording and/or playback face of a recording medium;
- a lens holder for holding the objective lens;
- a suspension for elastically supporting the lens holder;
- and
- an actuator base for supporting the suspension,
- wherein the lens holder has a portion for stopping movement of the lens holder toward the recording medium, said portion being provided on an opposite side of the lens holder relative to a side of the lens holder at which the objective lens is disposed, said portion being provided in partially overlapping relation with the objective lens in a projection view on the recording medium in a direction parallel with an optical axis of the objective lens.
An information playback device, comprising:
- a holder including a slot for inserting an optical disk into said holder;
- a lifting unit that moves said holder to open/close the slot;
- a playback unit for playing back at least the information from the optical disk held in the holder;
- an electronic board for converting an optical signal output from the playback unit into an electronic signal and for sending the electronic signal to a mobile terminal;
- and
- an actuator device comprising:
- an objective lens for focusing a light on a recording and/or playback face of said optical disk;
- a lens holder for holding the objective lens;
- a suspension for elastically supporting the lens holder;
- and
- an actuator base for supporting the suspension,
- wherein the lens holder includes a portion disposed on a side of the lens holder such that in operation the objective lens is interposed between the optical disk and said portion, said portion being operable to regulate movement of the lens holder toward the recording medium.
An actuator device comprising:
- (a) a moving unit that comprises
- an objective lens for focusing a light on a recording and/or playback face of a recording medium;
- a tracking unit for controlling a position of the objective lens, the tracking unit comprising a first tracking coil and a second tracking coil;
- and
- a lens holder for holding the objective lens;
- (b) a suspension for elastically supporting the lens holder;
- and
- (c) an actuator base for supporting the suspension,
- wherein the moving unit has a portion to be engaged with a stopper separate from the moving unit, said portion for stopping movement of the moving unit toward the recording medium, said portion being provided in its entirety between the first tracking coil and the second tracking coil in a projection view on the recording medium when viewed in a tracking direction of the tracking unit.
Dependencies are inferred from the claim text.