Patent ID: 7920442
Filing Date: 2011-04-05
Classification: G11B

Abstract:
1. An optical pickup device comprising: a first optical unit configured to emit a first wavelength of light; a second optical unit configured to emit a second wavelength of light, the second wavelength of light being longer than the first wavelength of light; an optical member configured to guide the first wavelength of light from the first optical unit and the second wavelength of light from the second optical unit to substantially a same optical path; a first focusing member configured to focus the first wavelength of light on a first optical disk; a second focusing member configured to focus the second wavelength of light on a second optical disk; a first optical component configured to reflect the first wavelength of light to the first focusing member; a second optical component configured to pass the first wavelength of light and reflect the second wavelength of light to the second focusing member; and a correcting member configured to correct the first wavelength light, wherein: the second focusing member is arranged between the correcting member and the first focusing member, and the correcting member includes a lens and corrects spherical aberration of the first wavelength light by moving the lens in an optical axis direction.