Abstract: An optical pickup for irradiating an information recording medium, such as a DVD, with a laser beam when an information signal is recorded or reproduced, and information equipment provided with the optical pickup. The optical pickup is capable of recording or reproducing an information signal with higher accuracy, while reducing an influence of stray light in an information recording medium, such as a multilayer type optical disc.

Abstract: An optical pickup for irradiating an information recording medium, such as a DVD, with a laser beam when an information signal is recorded or reproduced, and information equipment provided with the optical pickup.

Abstract: An optical pickup for irradiating an information recording medium, such as a DVD, with a laser beam when an information signal is recorded or reproduced, and information equipment provided with the optical pickup.

Abstract: An optical pickup for irradiating an information recording medium, such as a DVD, with a laser beam when an information signal is recorded or reproduced, and information equipment provided with the optical pickup.

Abstract: A small optical pickup apparatus which can record and reproduce different optical discs by one optical pickup device. The optical pickup device is constructed by: a main portion having a first light source to emit a first laser beam, a second light source to emit a second laser beam having a wavelength different from a wavelength of the first laser beam, and a photodetecting portion to receive first and second return light of the first and second laser beams which are reflected and returned from an optical disc; and an optical axis coupling prism which is fixed to the main portion and has a first plane of incidence where the first laser beam enters, a second plane of incidence where the second laser beam enters, a plane of synthesis to make optical axes of the first and the second laser beams coincident, and a plane of emission to emit the first and the second laser beams which pass through the plane of synthesis whose optical axes are made coincident.