| 摘要 |
An alignment apparatus in an optical pickup device is provided. It comprises a laser diode, a first coupling carrier, an optical assembly, a signal detector, a record medium and a second coupling carrier. The first coupling carrier bears the laser diode while the second coupling carrier bears the optical assembly and the signal detector. The first coupling carrier has a coupling structure of a spherical curved surface. The second coupling carrier has a coupling structure of a curved surface or a plane tangential to the spherical curved surface of the first coupling carrier. The first and the second coupling carriers couple each other. The inclination angles with respect to two-axes and the polarization direction of the laser beam are adjusted by rotating the coupling structure of the spherical curved surface, which significantly reduces the time interval of calibration optimization of searching laser beam and also reaches the goal of optimization of light energy characteristics of the laser beam.
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