Patent ID: 7321533
Filing Date: 2008-01-22
Classification: G11B

Abstract:
1. An optical pickup device comprising: a first light source that emits a first laser beam of a wavelength; a second light source that emits a second laser beam having a wavelength different from the wavelength of the first laser beam; an object lens configured to concentrate the first and second laser beams on a data recording surface of an optical disk; an optical monitor configured to detect a quantity of light of the second laser beam; and an optical separator having, the optical separator having a first prism located on a side proximate to the first light source and a second prism located on a side proximate to the second light source, wherein at least a part of one side surface of the first prism is bonded to at least a part of one side surface of the second prism with the wavelength selecting film placed between the bonded part of the one side surface of the first prism and the bonded part of the one side surface of the second prism; and said one side surface of the second prism comprises an exposed non-contact surface which extends from the bonded part thereof and which does not contact with said one side surface of the first prism, said non-contact surface of the second prism comprising the reflector.