| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical head device in which optical axis shift hardly occurs and which has high reliability. <P>SOLUTION: The device is provided with a laser light emitting element 4, a light receiving element 55 for signal detection, an optical system K constituting a forward path from the laser light emitting element 4 to an optical recording disk D and a backward path from the optical recording disk D to the light receiving element 55 for signal detection, an objective lens drive mechanism 9 supporting an objective lens 91 provided in the optical system K so as to drive the lens, and a device frame 2 mounting the optical system K and the objective lens drive mechanism 9. The device frame 2 has a main frame 21, the laser light emitting element 4 and the light receiving element 55 for signal detection which are mounted on the main frame 21, and a sub-frame 22 on which at least a part of plurality of optical elements constituting the optical system K are mounted. The sub-frame 22 is formed from a material being different from that of the main frame 21, while being adhered and fixed to the main frame 21 by adhesive 10 having a stress relaxation property. <P>COPYRIGHT: (C)2008,JPO&INPIT |
