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US 2006/0136952 A1Published application
Actuator, optical device, and optical recording/reproducing apparatus
AssigneeLG Electronics Inc.
InventorKwan Park
Life of this patent
Estimating the term…
Abstract
There is provided an actuator, an optical device, and an optical recording/reproducing apparatus. In the optical device, a first lens is fixed in an optical axis and a second lens, a movable member is supported by a shaft and slidable in an optical axis direction, and a second lens is formed on the movable member. The movable member is moved by interaction between a coil and a magnet.
Claims16
An actuator comprising:
- a movable member including a lens, a guide hole defined in an optical axis direction, and a coil formed on each side;
- and
- a fixed member including a magnet facing the coil, a shaft inserted into the guide hole for guiding movement of the movable member, and a base frame supporting the magnet and the shaft.
An optical device comprising:
- a first lens fixed in an optical axis and a second lens;
- a movable member supported by a shaft and slidable in an optical axis direction;
- and
- a second lens formed on the movable member,
- wherein the movable member is moved by interaction between a coil and a magnet.
2 more elements
An optical recording/reproducing apparatus comprising:
- a laser diode;
- a beam splitter transmitting or reflecting an incident beam based on polarization of the incident beam;
- a beam expander including a first lens and a second lens for compensating a beam converging angle or a beam diverging angle by adjusting distance between the first lens and the second lens;
- an actuator accommodating the second lens of the beam splitter and moving in an optical axis direction;
- an object lens condensing the beam transmitted through the beam expander onto an optical recording medium;
- a pick-up actuator accommodating the object lens and movable along at least two axes;
- a condensing lens condensing the beam reflected from the optical recording medium;
- an optical detector detecting the beam condensed by the condensing lens and converting the beam into an electrical signal;
- a pick-up servo controlling the pick-up actuator based on the signal from the optical detector;
- and
- a spherical aberration compensation servo controlling the actuator based on the signal from the optical detector.
8 more elements
Dependencies are inferred from the claim text.