| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 369440150 | Elastic, flexible, pliant or spring support of lens or mirror | 14 |
| 20080310261 | OPTICAL PICKUP AND OPTICAL DISK APPARATUS - An optical pickup includes: a base; a lens holder that is provided on the base to hold an objective lens which collects a light beam emitted from a light source and applies it onto an optical disk; a supporting plate that is provided on the base and spaced from the lens holder in a direction orthogonal to a focusing direction in parallel with a plane including the focusing direction and a tracking direction; and a plurality of suspension wires that is provided over the lens holder and the supporting plate to movably support the lens holder in the focusing direction and the tracking direction with respect to the supporting plate. The supporting plate has flexibility. A damping member is provided on the mounting plate. When the supporting plate is bent in the longitudinal direction of the suspension wire, the damping member is deformed to absorb vibrations of the lens holder. | 12-18-2008 |
| 20090016178 | ACTUATOR USED WITH AN OPTICAL PICKUP - An actuator used with an optical pickup includes: a base on which a holder is fixed; a lens holder in which a plurality of installation holes are formed such that a plurality of objective lenses to record and/or reproduce optical discs having different recording densities are installed at different heights; a support member, which movably supports the lens holder, having one end coupled to the lens holder and the other end coupled to the holder; and a magnetic circuit which drives the lens holder in focusing and tracking directions. The plurality of installation holes include a first installation hole in which a first objective lens for at least one type of low density optical disc is installed, and a second installation hole in which a second objective lens for a higher density optical disc than the low density optical disc is installed. When a working distance of the first objective lens for the low density optical disc installed in the first installation hole is represented as WD | 01-15-2009 |
| 20090116345 | Objective Lens Actuator - An objective lens actuator in an optical pickup, having a semiconductor laser diode, electro-optic parts, such as a lens or the like, as well as, the objective lens actuator, etc., in a case, comprises: a holder, which mounts an objective lens and a coil thereon, as being a movable part; a magnetic circuit part, which is made up with a magnet for magnetically driving said holder and a yoke; a plural number of elastic support parts which elastically supports said holder; and a support part, which supports other ends of said elastic support parts, wherein said support part has a part, which is cut open in parallel with the elastic support parts, between said elastic support parts, and has a through hole, in which said elastic support part passes through for each of said elastic support parts, and thereby to provide the objective lens actuator for lowering the unwanted vibration mode of the objective lens, and also enabling a stable control thereof. | 05-07-2009 |
| 20090310447 | OBJECTIVE LENS ACTUATOR - An objective lens actuator is provided in which an objective lens is hardly affected by a higher vibration mode and a gain crossover frequency can be increased even when the objective lens is disposed at the end of a lens holder. Between the optical axis of an objective lens | 12-17-2009 |
| 20090310448 | OBJECTIVE LENS ACTUATOR - In an objective lens actuator of an optical disk drive and the like, variations in the fixed end positions of wires serving as suspensions are reduced and tilt characteristics are improved. Terminal plates | 12-17-2009 |
| 20090316538 | Optical Disc Apparatus - An optical disc apparatus comprises an overcurrent detector and when the overcurrent detector detects an overcurrent during a recording operation or a reproduction operation and during an operation for controlling a focus of an objective lens, a rotation speed of an optical disc is reduced and an actuator is controlled to cause the objective lens to be in a retracted state under the condition that a disc motor exerts brake force. The objective lens is in the retracted state until the rotation speed of the optical disc becomes equal to or smaller than a predetermined value and when the rotation speed of the optical disc is equal to or smaller than the predetermined value, the objective lens is released from the retracted state. | 12-24-2009 |
| 20090323479 | Optical pickup - An optical pickup has a lens actuator, at least one suspension wire having a first end and an opposite second end, the lens actuator being held by the wire at the first end, and a support base to which the wire is fixed at the second end. The support base has at least one cutaway section provided as corresponding to the wire, having a concavity to receive at least partially the wire in cross section orthogonal to a longitudinal direction of the wire, the concavity curving in in a direction parallel to the cross section of the wire, and a land formed around the cutaway section, the wire being soldered to the land at the second end while the wire is being received at least partially by the concavity. | 12-31-2009 |
| 20100214886 | Optical Disc Apparatus Employing an Objective Lens Having a High Numerical Aperture - An optical disk apparatus that includes a movable part having an objective lens for focusing a laser beam onto an optical disk. A lens-holding member holds the objective lens. A protecting member prevents contact of the objective lens with the optical disk. An elastic supporting member supports the movable part, and an actuator drives the movable part toward or apart from the optical disk. The apparatus is constructed not to cause contact of the protecting member with the optical disk in a non-working state of the actuator, even when the elastic supporting member is bent by gravity toward the optical disk. | 08-26-2010 |
| 20100232265 | DRIVE DEVICE, OPTICAL HEAD, AND OPTICAL DISK RECORDING/REPRODUCING DEVICE - A spherical aberration correction mechanism | 09-16-2010 |
| 20100271912 | 3D ACTUATOR FOR OTPICAL DISC SYSTEM - An optical pick-up actuator ( | 10-28-2010 |
| 20110103203 | Actuator for pickup, pickup device, recording medium drive device, and method of manufacturing actuator for pickup - Provided is an actuator for a pickup, in which end parts of a plurality of suspensions ( | 05-05-2011 |
| 20130107683 | OBJECTIVE LENS HOLDER, OBJECTIVE LENS DRIVING DEVICE AND OPTICAL PICKUP APPARATUS | 05-02-2013 |
| 20140086030 | LENS DRIVING DEVICE, INFORMATION RECORDING AND PLAYBACK APPARATUS, AND ELECTRONIC INSTRUMENT - According to one embodiment, a lens driving device includes a movable member, a fixed member, and a magnet. The movable member is configured to retain a lens and a coil. The fixed member is configured to support the movable member such that the movable member is movable in an optical axis direction of the lens using an elastic member. The magnet is configured to generate a driving force for the movable member by interaction with the coil provided in the fixed member. At least one of the coil and the magnet is provided so as to be projected from the fixed member in a direction orthogonal to the optical axis of the lens. | 03-27-2014 |
| 369440160 | Flat flexible support (e.g., parallel leaf spring, etc.) | 1 |
| 20130077455 | OBJECTIVE LENS DRIVING DEVICE AND OPTICAL PICKUP APPARATUS INCLUDING THE SAME - Provided are an objective lens driving device capable of strengthening the effective magnetic fluxes of the magnets while preventing increases in size and costs of the device; and an optical pickup apparatus including the same. The objective lens driving device of the invention includes an actuator frame for movably supporting an OBL holder. Four tracking coils are attached to sidewalls of the OBL holder, and four magnets are attached to the back yokes of the actuator frame to be opposed to the tracking coils, respectively. In addition, two of the tracking coils are placed tilting to one of the sidewalls of the OBL holder. | 03-28-2013 |
