Abstract: An information reproducing device includes an information recording medium housing portion 8 for housing an information recording medium 7 that is detachably attached, a pickup 75 for reading information recorded at least on the information recording medium 7, and a pickup restrainer 94 for restraining a displacement that exceeds a normal operating range of the pickup 75, wherein the pickup restrainer 94 is constructed to displace in response to loading/unloading of the information recording medium 7 into/from the information recording medium housing portion 8.

Abstract: An actuator device, an optical disk device and an information playback device comprising: an objective lens for focusing a light on a recording and/or playback face of a recording medium; a lens holder for holding the objective lens; a suspension for elastically supporting the lens holder; and an actuator base for supporting the suspension. The lens holder has a portion on the opposite side in the optical axis of the objective lens with respect to the actuator base.

Abstract: An information reproducing device includes an information recording medium housing portion 8 for housing an information recording medium 7 that is detachably attached, a pickup 75 for reading information recorded at least on the information recording medium 7, and a pickup restrainer 94 for restraining a displacement that exceeds a normal operating range of the pickup 75, wherein the pickup restrainer 94 is constructed to displace in response to loading/unloading of the information recording medium 7 into/from the information recording medium housing portion 8.

Abstract: An optical pickup device, comprises a first light source emitting light with a short wavelength; a second light source emitting s light with a wavelength longer than that of the first light source; an optical member guiding the light from the first light source and the light from the second light source on almost the same optical path; a focusing member focusing the light from the optical member; a movable lens provided between the optical member and the focusing lens; and a drive member driving the movable lens, wherein a position of the lens when at least one of recording and reproducing of information is carried out on a medium using the light from the first light source is made different from a position of the lens when at least one of the recording and reproducing of information is carried out on the medium using the light from the second light source.

Abstract: An actuator device, an optical disk device and an information playback device comprising: an objective lens for focusing a light on a recording and/or playback face of a recording medium; a lens holder for holding the objective lens; a suspension for elastically supporting the lens holder; and an actuator base for supporting the suspension. The lens holder has a portion on the opposite side in the optical axis of the objective lens with respect to the actuator base.

Abstract: An optical fiber module for facilitating changing part of an existing electrical signal transmission system to an optical transmission system. The fiber module includes an electric connector, a laser diode (LD) semiconductor IC, an LD module, a photodiode (PD) semiconductor IC, a PD module, an optical connector, a printed circuit board, a cover, and a shielding portion. In one embodiment, the printed circuit board has a constricted portion between first and second areas of the cover. In another embodiment, the circuit board is flexible and can be folded at a central portion. The optical fiber module is easily attachable and detachable from the outside of a computer without requiring a mother board to have optical fibers mounted thereon.