Abstract: A planar integrated micro-optical pickup head is used to perform reading and writing operations on a high-density disk. The planar integrated micro-optical pickup head includes a set of optical elements that is comprised of a beam splitter, a plurality of 45-degrees-oriented folding mirrors, and two planar collimators. The pickup head further comprises a photo-detector, a laser source for emitting a laser beam of short wavelength, and an objective lens of high value of numerical aperture. The set of optical elements is formed on lower and upper substrates via semiconductor planar fabrication processes, the laser source and the objective lens then are mechanically attached on the lower substrate. The lower and upper substrates are ultimately aligned and attached with each other to achieve the pickup head hence having a reduced size and simply fabricated.

Abstract: An apparatus for activating a disk clamper by magnetic restoring force is provided for an optical disk drive having a casing and a cartridge for carrying an optical disk along a path in the optical disk drive. A spindle motor is mounted below the casing that is made of material which can be induced by a magnet. A disk clamper includes a magnet mounted therein and has a central axle coaxial with a central axis of the spindle motor. The disk clamper and the spindle motor and respectively located on two sides of the disc when the cartridge is inside the optical disk drive for securely clamping the optical disk together. When the spindle motor moves upwardly, the disk clamper is moved downwardly to clamp the optical disk in the cartridge under action of magnetic force between the spindle motor and the magnet in the disk clamper.

Abstract: An apparatus for activating a disk clamper by magnetic restoring force is provided for an optical disk drive having a casing and a cartridge for carrying an optical disk along a path in the optical disk drive. A spindle motor is mounted below the casing that is made of material which can be induced by a magnet. A disk clamper includes a magnet mounted therein and has a central axle coaxial with a central axis of the spindle motor. The disk clamper and the spindle motor and respectively located on two sides of the disc when the cartridge is inside the optical disk drive for securely clamping the optical disk together. When the spindle motor moves upwardly, the disk clamper is moved downwardly to clamp the optical disk in the cartridge under action of magnetic force between the spindle motor and the magnet in the disk clamper.

Abstract: An apparatus for activating a disk clamper by magnetic restoring force is provided for an optical disk drive having a casing and a cartridge for carrying an optical disk along a path in the optical disk drive. A spindle motor is mounted below the casing that is made of material which can be induced by a magnet. A disk clamper includes a magnet mounted therein and has a central axle coaxial with a central axis of the spindle motor. The disk clamper and the spindle motor are respectively located on two sides of the disc when the cartridge is inside the optical disk drive for securely clamping the optical disk together. When the spindle motor moves upwardly, the disk clamper is moved downwardly to clamp the optical disk in the cartridge under action of magnetic force between the spindle motor and the magnet in the disk clamper.

Abstract: A disk loader for loading disk into a disk reader having a vertical protection panel and a retractable block structure. The vertical protection panel is used for restricting bare disk so that even if the disk reader is vertically placed, the disk cannot fall out during the disk-loading process. The retractable block structure is used for pushing one side of a disk cartridge so that even if the disk reader is vertically placed, the disk cartridge cannot fall out during the disk-loading process. Therefore, the disk reader can be horizontally placed or vertically placed without affecting the process of loading a bare disk or a disk cartridge into a disk reader. In addition, the disk loader can be designed to use a set of pre-loading arms for restricting a bare disk or disk cartridge, too.