Abstract: A camera module includes a zoom lens group, a focus lens group, a barrel, an actuator group comprising a first actuator and a second actuator. The first and second actuators are received in the barrel, and respectively receive the zoom lens group and the focus lens group therein. The first lens group is driven by the first actuator to move along the axis thereof. The second lens group is driven by the second actuator to move along the axis thereof.

Abstract: A lens actuator includes a lens barrel for accommodating the lens, a coil warped around the lens barrel, a plurality of magnets, a bracket for mounting the magnets thereon and accommodating the lens barrel therein, and a resilient plate connected between the bracket and the lens barrel to hold the lens barrel on the bracket. The resilient plate includes a plate shaped body, a through hole defined in the center of the plate shaped body, a plurality of slots defined in the plate shaped body and the slots cooperatively surrounding the through hole, and a plurality of fixing portions. A first pinhole defined in each of the fixing portions. The lens barrel comprises a plurality of first positioning pins corresponding to the first pinholes and protruded out from the lens barrel, and the resilient plate is fastened to the lens barrel by engagement of the first pinholes with the respective first positioning pins.

Abstract: A projector include focus controlling device s a projection lens, an image capture device, an image analyzing device and a focus controlling device. The projection lens is configured for projecting an image onto a projection surface. The image capture device is configured for capturing images of the image projected on the projection surface. The image analyzing device is configured for analyzing intensity difference between adjacent pixels of the images captured by the image capture device and generating a control signal associated therewith. The focus controlling device is configured for focusing the projection lens at a position where there is maximum intensity difference between adjacent pixels in response to the control signal from the image analyzing device.

Abstract: An optical actuator is disclosed. The optical actuator includes a seat bearing the optical element, a yoke comprising an end, a suspension system comprising at least one spring sheet connecting the seat and the end, and a driving device moving the seat relative to the yoke. The spring sheet constrains the movement of the seat. The spring sheet includes an inner connecting portion connected to the seat, an outer connecting portion surrounding the inner connecting portion and connected to the end, and a spring structure disposed between the inner and outer connecting portions and connecting the inner and outer connecting portions.

Abstract: A resilient plate includes a plate shaped body. A through hole is defined in the center of the plate shaped body. A plurality of slots is defined in the plate shaped body and the slots cooperatively surrounding the through hole. Each of the slots includes a first substantially straight slot portion, a second substantially straight slot portion and a third substantially straight slot portion. The second substantially straight slot portion interconnects between and substantially perpendicular to the first and second substantially straight slot portions. The slots are oriented about 90 degrees with respect to each other.

Abstract: An objective lens actuator is provided. An objective lens holder is movably located on a ferromagnetic yoke with corresponding to inner yokes thereof to hold an objective lens. Tracking coils and focusing coils are respectively located on different two opposite sides of the lens holder and the latter are surrounded with the inner yokes. A magnetic element set is located on the ferromagnetic yoke corresponding to the coils to generate a magnetic field perpendicular to the optical axis of the lens. A suspension wire set is connected to the lens holder and the coils to hang the lens holder and channel current to the coils. A damper holder is located on a ferromagnetic yoke to allow the wire set to pass through. A printed circuit board is located on the damper holder and coupled with the wire set to provide the current to the coils, to drive the lens holder.

Abstract: An optical head to access data on an optical recording medium, which has two data storage densities, includes two sets of optical path systems to provide two optical paths that are crossed. Each optical path system includes a laser light generation unit, a light guiding unit, a converging objective lens and a photo detector. The light guiding unit is located on the optical path of the laser light generation unit, to direct the laser light to pass through the converging objective lens and focus on the data side of the optical recording medium to carry optical data signals from the data side. The laser light returns to the light guiding unit and travels along the optical path and is received by the photo detector.

Abstract: An optical actuator is disclosed. The optical actuator includes a seat bearing the optical element, a yoke comprising an end, a suspension system comprising at least one spring sheet connecting the seat and the end, and a driving device moving the seat relative to the yoke. The spring sheet constrains the movement of the seat. The spring sheet includes an inner connecting portion connected to the seat, an outer connecting portion surrounding the inner connecting portion and connected to the end, and a spring structure disposed between the inner and outer connecting portions and connecting the inner and outer connecting portions.

Abstract: An optical head to access data on an optical recording medium, which has two data storage densities, includes two sets of optical path systems to provide two optical paths that are crossed. Each optical path system includes a laser light generation unit, a light guiding unit, a converging objective lens and a photo detector. The light guiding unit is located on the optical path of the laser light generation unit, to direct the laser light to pass through the converging objective lens and focus on the data side of the optical recording medium to carry optical data signals from the data side. The laser light returns to the light guiding unit and travels along the optical path and is received by the photo detector.

Abstract: An objective lens actuator which mainly using an objective lens holder with a flat form facilitates manufacture and fabrication. Also the objective lens actuator controls the focusing direction, tracking direction and radial tilt direction of the optical pickup head. And, the objective lens actuator not only controls but also drives the optical pickup head.

Abstract: An optical pickup head and an electromagnetic actuating device thereof are provided. The electromagnetic actuating device is used to move an objective lens carrier having an objective lens assembly to form an optical pickup head. The electromagnetic actuating device includes at least a magnet, at least a coil, and at least a yoke. The magnet is spaced apart from the objective lens carrier by a distance, and the coil is disposed at the objective lens carrier, for generating an electromagnetic force to interact with the magnet. The yoke is spaced apart from the objective lens carrier by a distance, in which the yoke has a protruding part that extends towards the objective lens carrier and is used to attract magnetic flux lines produced by the magnet, and thus making the magnetic flux that passes through the coil be distributed evenly.

Abstract: An objective lens actuating apparatus is provided for an optical read/write head. The apparatus includes a base; a lens holder floating over the base; an objective lens, fixed on the lens holder; two multi-polar magnets mounted on the base; and two coil plates located between the two magnets and fixed on the lens holder. Each coil plate has a tracking coil, a focusing coil, and a tilting coil, which overlaps different magnetic poles of each magnet. The coils generate Lorentz Forces after currents being input into the coils, so as to drive the lens holder moving or tilting.

Abstract: An objective lens actuator is provided. An objective lens holder is movably located on a ferromagnetic yoke with corresponding to inner yokes thereof to hold an objective lens. Tracking coils and focusing coils are respectively located on different two opposite sides of the lens holder and the latter are surrounded with the inner yokes. A magnetic element set is located on the ferromagnetic yoke corresponding to the coils to generate a magnetic field perpendicular to the optical axis of the lens. A suspension wire set is connected to the lens holder and the coils to hang the lens holder and channel current to the coils. A damper holder is located on a ferromagnetic yoke to allow the wire set to pass through. A printed circuit board is located on the damper holder and coupled with the wire set to provide the current to the coils, to drive the lens holder.

Abstract: An objective lens actuator which mainly using an objective lens holder with a flat form facilitates manufacture and fabrication. Also the objective lens actuator controls the focusing direction, tracking direction and radial tilt direction of the optical pickup head. And, the objective lens actuator not only controls but also drives the optical pickup head.

Abstract: A pickup head actuator for carrying a plurality of near-field optical I/O elements, far-field optical I/O elements, or magnetic I/O elements. Besides performing focusing and tracking servo, the attraction due to magnetic inductor and tracking magnet enables a base to float at different heights in its normal state, suitable for different types of I/O elements.

Abstract: An optical head to access data on an optical recording medium, which has two data storage densities, includes two sets of optical path systems to provide two optical paths that are crossed. Each optical path system includes a laser light generation unit, a light guiding unit, a converging objective lens and a photo detector. The light guiding unit is located on the optical path of the laser light generation unit, to direct the laser light to pass through the converging objective lens and focus on the data side of the optical recording medium to carry optical data signals from the data side. The laser light returns to the light guiding unit and travels along the optical path and is received by the photo detector.

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: A wire-suspended objective lens actuator structure and a method of assigning current pathways. The lens holder on the actuator structure has a group of focusing coils, a group of tracking coils and a group of slant adjustment coils. The coils are connected to four conductive wires. A first conductive wire controls the focusing coil and a second conductive wire controls the tracking coil. Similarly, a third conductive wire controls the slant adjustment coil. The ground terminals of all three groups of coils are connected in parallel to a fourth conductive wire. The fourth conductive wire serves as a common ground terminal. The control terminal of each group of coils is connected to a differential voltage-output current amplifier circuit or a differential voltage-output voltage amplifier circuit. Hence, the focusing, the tracking and the slant adjustment coils can be driven by differential voltages.

Abstract: A pickup head actuator is disclosed. It is able to carry near-field optical I/O elements, far-field optical I/O lens, or magnetic I/O elements. Besides performing focusing and tracking servo, the attraction due to magnetic inductor and tracking magnet enables a base to float at different heights in its normal state, suitable for different types of I/O elements. Thus, the invention solves the problem of compatibility.

Abstract: An opener for opening the shutter door of a disk cartridge. The opener includes an opener beam having a slot section and a pin that passes through the slot section of the opener beam to be fastened onto a base metal plate. Therefore, the opener beam is able to slide with respect to the fixed pin within the opener slot. A first slot is also formed in the base metal plate so that a slider attached to the head section of the opener beam is able to slide freely inside the slot. In addition, the opener has a spring with one end fastened to the base metal plate while the other end is fastened to a spring lock pin of the opener beam. A second slot on the base metal plate permits the spring lock pin to slide inside the slot. In an alternative design, by using pins that fasten onto the base metal plate, there is no need to form first or second slots on the base metal plate.