| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical disk drive which can continue reading of information even when a signal level decreases.SOLUTION: An optical disk drive has light emitting elements 31, 32 that emit light, and an object lens 33 for condensing the light emitted from the light emitting elements 31, 32 to an optical disk medium. When reading information from the optical disk medium, control is performed to shift a center position of the object lens 33 with respect to an optical axis position of the light emitted from the light emitting elements 31, 32. |
