Head gimbal assembly and information recording apparatus
AssigneeHitachi, Ltd.
InventorTakuya Matsumoto
Life of this patent
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Abstract
When a semiconductor laser is arranged outside a slider and a light is to be guided to the slider through a waveguide, the following problems will be solved: the stability of the flying slider is deteriorated due to a stress from the waveguide; and when an actuator is arranged near the flying slider, the motions of the slider are hindered by the waveguide. A waveguide for guiding a light to a light irradiating unit inside a slider, which floats over a medium and has the light irradiating unit for irradiating a light to the medium; and a waveguide for propagating a light from the light source to the waveguide inside the slider, are included. The two waveguides are not in contact with each other, and a relative portion between the two waveguides is movable.
Claims11
A head gimbal assembly comprising:
- a slider configured to fly over a moving medium and having a light irradiating unit configured to irradiate light;
- a first waveguide inside the slider and configured to guide light to the light irradiating unit;
- and a second waveguide configured to propagate light to the first waveguide inside the slider, wherein a relative position between the first waveguide and the second waveguide is movable.
An information recording apparatus comprising:
- a recording medium;
- a medium driving unit configured to drive the recording medium;
- a light source;
- a head gimbal assembly including a slider configured to fly over the recording medium and having a light irradiating unit configured to irradiate light, a first waveguide inside the slider and configured to guide light to the light irradiating unit, a second waveguide configured to propagate light to the first waveguide inside the slider, wherein a relative position between the first waveguide and the second waveguide is movable;
- and an actuator configured to position the light irradiating unit within the slider at a desired position.
Dependencies are inferred from the claim text.