Optical pickup apparatus and method of controlling the same

An optical pickup apparatus comprising:

• a motor;
• a rotary member connected to the motor, the rotary member having a movement part and first and second stop parts extending from opposite ends of the movement part;
• a lead member disposed on the rotary member such that the lead member moves along the movement part and stops at the first and second stop parts;
• and
• a lens connected to the lead member to correct an aberration.

A method of controlling an optical pickup apparatus, comprising:

• applying a first signal to a motor to move a lead member connected to a lens to a stop part of a rotary member;
• applying a first signal to the motor to engage the lead member with a movement part of the rotary member when the movement of the lead member is completed;
• and
• applying a second signal to the motor to move the lead member to a target position to correct an aberration when the engagement is completed.

An optical pickup apparatus, comprising:

• a light source to emit light through a collimator lens;
• a detector to detect light emitted from the light source and reflected from an optical disc through the collimator lens;
• a controller to determine a kind of the optical disk and to generate a position control signal based at least in part on the detected light;
• and
• a drive unit to adjust a position of the collimator lens relative to the optical disc based on the generated position control signal to correct an aberration of the optical disc.

A method of correcting an aberration of an optical disc, the method comprising:

• emitting light from a light source through a collimator lens;
• detecting light emitted from the light source and reflected from the optical disc through the collimator lens;
• determining a kind of the optical disc and generating a position control signal based at least in part on the detected light;
• and
• adjusting a position of the collimator lens relative to the optical disc based on the generated position control signal to correct an aberration of the optical disc.