Optical pick up device and optical disc driver

Application Number: 00108891
Application Date: 2000.02.25
Publication Number: 1271160
Publication Date: 2000.10.25
Priority Information: 1999/2/25 JP 47422/99; 1999/3/3 JP 55410/99
International: G11B7/125;G11B7/135
Applicant(s) Name: Sony Corp.
Inventor(s) Name: Hashimoto Minoru;Umaba Tomohiko
Patent Agency Code: 72001
Patent Agent: zhang zhicheng
Abstract An optical disc drive compatible with optical discs of different types, for example, is provided. For focusing, through an optical system used in common with the different types of optical discs, a laser beam emitted from a selected one of a plurality of light sources disposed apart from each other radially of the optical disc, the optical system is moved radially of the optical disc correspondingly to the selection of the light source for emitting the laser light. Namely, it is possible to prevent the optical property from being deteriorated when a single optical pickup is used in common with such optical discs of different types.