Bizarre Patents
A Christmas stocking having illumination means associated therewith for signalling the arrival of Santa Claus.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8089848 | Optical pickup and optical information processing apparatus A disclosed optical pickup for performing at least recording, reproduction, or deletion of information on a first, second, third, and fourth optical recording media having different recording densities includes a first light source configured to emit first light hav... | 01/03/2012 |
| 7990832 | Optical pickup including plural light sources and recording and/or reproducing apparatus for an optical recording medium The present invention provides an optical pickup in which the transmission diffraction efficiency of plural recording and/or reproducing light beams of different wavelengths, radiated from plural light sources, may be prevented from being lowered, and in which the t... | 08/02/2011 |
| 7952977 | Optical pickup apparatus A diffracting portion is disposed in an optical path between a light source and an optical disc. The diffracting portion diffracts the reflected light from recording layers of the optical disc toward a light receiving portion. The diffracting portion includes a firs... | 05/31/2011 |
| 7929398 | Optical pickup and optical data processing device using the same An optical pickup including a light source, two light focus devices, a light reception device, a polarization selective light path splitting device, a polarization switching device, a first diffraction element including a periodic structure including two kinds of su... | 04/19/2011 |
| 7911922 | Optical-integrated unit and optical pickup device used for reading and/or writing information from/onto an optical record medium A lens-side grating diffracts, in a direction of an emitter-side grating, two laser beams passed through the lens-side grating from an optical disk side. The emitter-side grating substantially passes the laser beam having a longer wavelength than the other laser bea... | 03/22/2011 |
| 7848206 | Diffractive optical element and optical head A diffractive optical element whose two diffraction gratings diffract three different wavelength light beams is provided. The diffractive optical element includes a first diffraction grating and a second diffraction grating that is located opposite the first one, an... | 12/07/2010 |
| 7821901 | Optical pickup device for supporting a plurality of types of optical disks The optical pickup device includes a semiconductor laser for emitting laser light of 650 nm and 780 nm in wavelengths, a semiconductor laser for emitting laser light of 400 nm in wavelength, and an optical sensor which is provided in sequence with a first light rece... | 10/26/2010 |
| 7782735 | Optical pickup device capable of handling a plurality of laser light beams having different wavelengths An optical pickup device that emits laser light beams having different wavelengths to a recording medium is disclosed. A semiconductor laser includes three laser elements having emitting wavelengths of λ1, λ2, and λ3 (λ1 | 08/24/2010 |
| 7710847 | Optical pickup apparatus An optical pickup apparatus for recording and/or reproducing information for an optical information recording medium, comprising a light converging optical system including a coupling lens and an objective lens, wherein a first diffraction structure is installed on ... | 05/04/2010 |
| 7602691 | Diffractive part A diffractive part for an optical scanning device is described. The device is for scanning a first information layer by means of a first radiation beam having a first wavelength and a first polarisation, a second information layer by means of a second radiation beam... | 10/13/2009 |
| 7564763 | Optical arrangement An optical system is described for scanning optical record carriers of different types. The optical system includes a compensator having a number of optical elements (NPS1, NPS2). The optical elements (NPS1, NPS2) are non-periodic phase s... | 07/21/2009 |
| 7525879 | Objective optical element and optical pickup apparatus An objective optical element for use in an optical pickup apparatus first-third light sources emitting first-third light fluxes and a light converging optical system, includes a first optical path difference providing structure for providing an optical path differen... | 04/28/2009 |
| 7502299 | Objective optical system and optical pickup device using it An objective optical system is formed of a diffractive optical element with a diffractive surface formed on a virtual plane and an objective lens for focusing three light beams of three different wavelengths at three different numerical apertures onto desired positi... | 03/10/2009 |
| 7408724 | Optical systems including a chromatic diffractive optical element corrector and associated methods A diffractive optical element (DOE) corrector for use with three different wavelengths includes a first diffractive element on a first surface of a first material, the first diffractive element diffracting a first wavelength of the three wavelengths, while directing... | 08/05/2008 |
| 7367759 | Surface relief grating image machining process and product A surface relief grating (SRG) image machining process and/or product. For the SRG image machining process a material and a cutting tool are provided. The material is contacted by the cutting tool to a predetermined depth. The cutting tool is rotated to cut the mate... | 05/06/2008 |
| 7369467 | Optical pickup including polarization holographic optical element and photodetector Disclosed is an optical pickup including a polarization holographic optical element (HOE) and a photodetector. The optical pickup includes a light source, an optical path changer, an objective lens, a polarization HOE, and a photodetector. The polarization HOE has a... | 05/06/2008 |
| 7369479 | Optical miniaturized module, optical pickup device, and optical disk device provided with light source and photodetector The optical miniaturized module includes a semiconductor laser for irradiating an optical disk with laser light, a diffraction grating for forming a main beam and two sub beams from the laser light, a polarization hologram for dividing reflected light from the optic... | 05/06/2008 |
| 7348529 | Optical device and optical pickup device An optical device diffracts incident light with a hologram element 19 and receives the diffracted light with light receiving regions 20A to 29 on a light receiving element 12. The light receiving element 12 separately receives refl... | 03/25/2008 |
| 7336586 | Optical pickup device compatible with two types of optical recording media An optical pickup device compatible with two types of optical recording media in accordance with the present invention includes: a first light source emitting a first laser beam with a first wavelength; a second light source emitting a second laser beam with a secon... | 02/26/2008 |
| 7317672 | Optical head An optical head includes the following: a light beam separator (35) that includes substantial interference regions for light that is reflected from an information recording medium and travels in a straight path and ±first-order diffracted light produced by i... | 01/08/2008 |
| 7317674 | Optical pick-up units and laser drivers with increased functionality Optical pick-up units and laser drivers are disclosed, which can be used in various types of information recording/reproducing apparatuses, such as, but not limited to, DVD and CD drives, DVD camcorders, and DVD video recorders. A laser driver integrated circuit (LD... | 01/08/2008 |
| 7317676 | Optical head device and optical information apparatus using this optical head device, and computer, optical disk player, car navigation system, optical disk recorder and optical disk server using this optical information apparatus Providing an objective lens with a large numerical aperture (NA), the present invention records or plays conventional optical disks such as CDs and DVDs at high light usage efficiency, using an optical head capable of recording or reproducing high-density optical di... | 01/08/2008 |
| 7315502 | Light integration unit, optical pickup device using the unit, and optical disk device An object of the present invention is to attain stable tracking servo performance by suppressing an offset caused by a shift of an object lens or a tilt of a disk, despite the one-beam method which does not cause reduction in light quantity of the main beam. A diffr... | 01/01/2008 |
| 7313061 | Optical pickup having a plurality of photodetectors divided into four regions used to obtain both focus and tracking error signals An optical pickup comprises: first and second semiconductor lasers (11, 14); a hologram element (17) for diffracting light reflected by an optical information recording medium (9 or 12); and a plurality of photodetectors (18-23 | 12/25/2007 |
| 7307938 | Optical pickup apparatus having an improved holographic unit, and optical disk drive including the same In an optical pickup apparatus of the present invention, either a first laser diode emits a laser beam having a first wavelength or a second laser diode emits a laser beam having a second wavelength. An optical system focuses one of the two laser beams onto a record... | 12/11/2007 |
| 7304935 | Optical pickup device and correcting element used in the optical pickup device An optical pickup device wherein at least a high density disc such as HD-DVD is compatible with DVD, and securing an amount of light is compatible with correction of chromatic aberration. An a correcting element representing an optical system used for the aforementi... | 12/04/2007 |
| 7292519 | Optical head with lasers and mirrors in a recess formed in a substrate An integrated optical head records and reproduces information to and from optical discs of different types, including CD and DVD, with use of a single information recording/reproducing apparatus. The optical head has a plurality of semiconductor lasers of different ... | 11/06/2007 |
| 7282684 | Optical pickup apparatus An optical pickup apparatus is provided with a light source device to emit selectively an ordinary polarized light ray and an extraordinary polarized light ray by controlling a polarization condition of a light flux having a wavelength of λ1; and a light converging... | 10/16/2007 |
| 7280458 | Optical pickup apparatus and optimal light spot focusing method An optical pickup apparatus includes a first light source to emit a first light beam having a predetermined wavelength, a first optical path changer to change a proceeding path of the first light beam, an objective lens to focus the first light beam on a recording m... | 10/09/2007 |
| 7280459 | Device for correcting signal modulations A device for reading from and/or writing to optical recording media 10, on which information is present in the form of pits, with a linearly polarized light beam 2. A device for reading from and/or writing to optical recording media 10 w... | 10/09/2007 |
| 7280573 | Semiconductor laser unit and optical pickup device The semiconductor laser unit includes: a metal plate having a center portion wider than the remaining portions; a flexible substrate having a first opening; a substrate mounted on the center portion; a semiconductor laser placed on the substrate; a frame having a se... | 10/09/2007 |
| 7266072 | Semiconductor laser unit and optical head device A semiconductor laser unit includes a plurality of semiconductor laser elements arranged parallel with one another in a laser beam-emitting direction, and a base for positioning and fixing the plurality of semiconductor laser elements. The plurality of semiconductor... | 09/04/2007 |
| 7256812 | Laser exposing apparatus A laser exposing apparatus has a first laser source emitting a first laser beam, a second laser source emitting a second laser beam shorter in wavelength than the first laser beam, and an optical device for directing the first laser beam and the second laser beam to... | 08/14/2007 |
| 7248545 | Optical pickup device According to the present invention, an optical pickup device forms one main spot, a first subspot, and a second subspot by irradiation of light on an optical disk having a groove part and a land part. The optical pickup device includes operation circuits which indic... | 07/24/2007 |
| 7245407 | Complex objective lens compatible with information media of different thicknesses A complex objective lens composed of a hologram and an objective lens, capable of realizing stable and high-precision compatible reproducing/recording of a BD with a base thickness of about 0.1 mm for a blue light beam (wavelength λ1) and a DVD with a base t... | 07/17/2007 |
| 7230904 | Compatible optical disk player and data recording and reproducing method A simulation device for simulating an operation of a system constituted by a plurality of machines. An operation program is executed by an arithmetic processing unit in a controller of a machine or by an information processing device having a function of analyzing t... | 06/12/2007 |
| 7215476 | Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus Laser beams respectively emitted from a SHG blue laser unit and a red semiconductor laser unit that have photo detectors respectively are turned into parallel lights by a collimator lens and then coupled by a dielectric multi-layer film mirror so as to be propagated... | 05/08/2007 |
| 7209427 | Optical pickup with reduced size An optical pickup having a light-emitting element, an objective lens unit, a reflecting mirror and a light-receiving element, emits a beam onto an optical recording medium and uses a reflected beam to read recorded information. In the objective lens unit, a central ... | 04/24/2007 |
| 7209426 | Liquid crystal optical element and optical device The invention is directed to the provision of a liquid crystal optical element, for correcting wavefront aberrations (principally, coma aberration and spherical aberration), that can be mounted separately from an objective lens, and an optical apparatus using such a... | 04/24/2007 |
| 7200098 | Objective lens for high-density optical focusing and an optical disk in an optical pickup An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the in... | 04/03/2007 |
