Patents Issued in April 24, 2008
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Publication number: 20080094711Abstract: Methods and apparatus to record large-sized, low frequency holographic gratings by using a two-dimensional scanner with a shearing interferometer.Type: ApplicationFiled: October 11, 2006Publication date: April 24, 2008Inventor: Oleg Efimov
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Publication number: 20080094712Abstract: A close-contact multi-layer type diffractive optical element having a homogeneous low-refractive-index and high-dispersion resin layer is produced with satisfactory workability. Among two optical members constituting a diffractive plane, a low-refractive-index and high-dispersion member is formed, using a resin precursor composition containing bifunctional fluorine-containing (meth)acrylate and bifunctional (meth)acrylate having a fluorene structure.Type: ApplicationFiled: December 20, 2005Publication date: April 24, 2008Applicant: NIKON CORPORATIONInventor: Akiko Miyakawa
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Publication number: 20080094713Abstract: The invention concerns a security element (11) in the form of a multi-layer film body, a security document having such a security element and a process for the production of such a security element. The film body on a carrier film (10) has a release layer (20), a protective lacquer layer (21), a replication lacquer layer (22) with relief structures (25, 26), a metal layer (23) and an adhesive layer (24). A first relief structure (25) has a depth-to-width ratio of >0.5, whereby the metal layer (23) is more transparent in the region of the first relief structure (25). A second relief structure (26) has a low depth-to-width ratio whereby the metal layer (23) is less transparent or is opaque in the region of the second relief structure (26).Type: ApplicationFiled: August 29, 2005Publication date: April 24, 2008Applicant: OVD KINEGRAM AGInventors: Wayne Tompkin, Andreas Schilling
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Publication number: 20080094714Abstract: The present invention provides a green mirror having both glare proof property and pollution preventive property and furthermore an excellent visibility by controlling the spectral reflection spectrum of the mirror comprising a photo catalyst titanium oxide layer. The mirror comprises a glass substrate, a reflection film, and a composite film with a colored layer, a titanium oxide layer and a silicon oxide layer laminated sucessively, wherein the spectral reflectance peak is 490 to 540 nm.Type: ApplicationFiled: October 9, 2007Publication date: April 24, 2008Inventors: Hironori Shibasaki, Shigeru Morohashi, Tsutomu Ubukata, Akio Shimoyama
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Publication number: 20080094715Abstract: A vision system for a vehicle includes an imaging sensor and a logic and control circuit, which generates at least one control output for controlling at least one vehicular light of the vehicle. The vision system recognizes veiling glare caused by scattered light in the field of view exterior and forward of the vehicle, with the scattered light being caused by at least one of fog, snow and rain present in the field of view exterior and forward of the vehicle. The vision system, responsive to the recognition of the veiling glare in the field of view exterior and forward of the vehicle, selects an appropriate vehicular lighting configuration so as to reduce the level of the veiling glare. The logic and control circuit may generate a control output for controlling at least one headlight, which may be operable in a high beam mode and a lower beam mode.Type: ApplicationFiled: December 18, 2007Publication date: April 24, 2008Applicant: Donnelly CorporationInventors: Kenneth Schofield, Mark Larson
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Publication number: 20080094716Abstract: A transmission-type display panel according to the present invention includes a plurality of transparency control regions arranged in an array, a non-transparent border region existing around each of the transparency control regions, and a microlens array including a plurality of microlenses arranged in an array so as to correspond to the plurality of transparency control regions. Each of the microlenses serves to converge incident light, which is about to advance straight to the non-transparent border region, into corresponding one of the transparency control regions. The microlens array is formed by use of a transparent diamond-like carbon (DLC) film. The DLC film includes a region having its refractive index modulated corresponding to each of the microlenses, and produces a light convergence effect when light flux passes through the region having its refractive index modulated. By applying the microlens array in the DLC film to a transmission-type display panel (e.g.Type: ApplicationFiled: August 12, 2005Publication date: April 24, 2008Inventors: Toshihiko Ushiro, Kazuhiko Oda, Takashi Matsuura
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Publication number: 20080094717Abstract: A focus optical lens array assembly has two lens sections each encased in a housing. The housings are made of black polymer to block unwanted scattered or external light. The lens assembly can all be made by injection-molding. Notches, locating holes, posts, and ears serve to orient and align the parts, and to prevent incorrect assembly. The housings include a plurality of holes that extend to the edge of the individual lenses. This prevents any unwanted light from passing to other adjacent lenses. As a result, cross-talk is reduced and ghosting is prevented.Type: ApplicationFiled: July 5, 2007Publication date: April 24, 2008Inventors: Rong-Yaw Wu, Sheng Chen, Shih-Che Chen
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Publication number: 20080094718Abstract: A micro-optical device includes a plurality of minute optical elements each having a curved surface operable to condense incident light. The minute optical elements are arranged at constant intervals. The curved surface is expressed by two or more F values.Type: ApplicationFiled: December 8, 2005Publication date: April 24, 2008Inventors: Takanobu Osaka, Atsushi Takaura, Kazuhiro Fujita, Kazuya Miyagaki
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Publication number: 20080094719Abstract: A display device for displaying information is provided with an optical system for guiding the light of the display device to the eye, the optical system having, in the order in the proceeding direction of the light, an entrance face for receiving the light, a curved face for totally reflecting the light and a reflecting face concave to the eye side and adapted to reflect the light toward the eye. The reflected light is transmitted by the curved face and reaches the eye. Thus there is obtained a compact display device with satisfactorily suppressed aberrations.Type: ApplicationFiled: October 30, 2007Publication date: April 24, 2008Applicant: Canon Kabushiki KaishaInventors: Shoichi Yamazaki, Takeshi Nishimura
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Publication number: 20080094720Abstract: A display device for displaying information is provided with an optical system for guiding the light of the display device to the eye, the optical system having, in the order in the proceeding direction of the light, an entrance face for receiving the light, a curved face for totally reflecting the light and a reflecting face concave to the eye side and adapted to reflect the light toward the eye. The reflected light is transmitted by the curved face and reaches the eye. Thus there is obtained a compact display device with satisfactorily suppressed aberrations.Type: ApplicationFiled: October 30, 2007Publication date: April 24, 2008Applicant: Canon Kabushiki KaishaInventors: Shoichi Yamazaki, Takeshi Nishimura
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Publication number: 20080094721Abstract: A light source for use in a projection system comprises a pair of lamps each effective to produce a substantially collimated beam. Part of the light emitted by each lamp is directed through the light originating part of the same, or another, lamp. A light combiner is arranged within the path of the light beams from each of the two lamps to provide a composite light beam of a cross section less than the sum of the cross section of the beams produced by each of the lamps.Type: ApplicationFiled: October 5, 2007Publication date: April 24, 2008Inventor: Graham Moss
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Publication number: 20080094722Abstract: Novel optical devices based on diamondoid-containing materials are disclosed. Materials that may be fabricated from diamondoids included diamondoid nucleated CVD films, diamondoid-containing CVD films, molecular crystals, and polymerized materials. Devices that may be fabricated from the diamondoid-containing materials disclosed herein include solid state dye lasers, semiconductor lasers, light emitting diodes, photodetectors, photoresistors, phototransistors, photovoltaic cells, solar cells, anti-reflection coatings, lenses, mirrors, pressure windows, optical waveguides, and particle and radiation detectors.Type: ApplicationFiled: December 22, 2006Publication date: April 24, 2008Applicant: Chevron U.S.A. Inc.Inventors: Jeremy Dahl, Robert Carlson, Shenggao Liu
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Publication number: 20080094723Abstract: Novel optical devices based on diamondoid-containing materials are disclosed. Materials that may be fabricated from diamondoids included diamondoid nucleated CVD films, diamondoid-containing CVD films, molecular crystals, and polymerized materials. Devices that may be fabricated from the diamondoid-containing materials disclosed herein include solid state dye lasers, semiconductor lasers, light emitting diodes, photodetectors, photoresistors, phototransistors, photovoltaic cells, solar cells, anti-reflection coatings, lenses, mirrors, pressure windows, optical waveguides, and particle and radiation detectors.Type: ApplicationFiled: December 22, 2006Publication date: April 24, 2008Applicant: Chevron U.S.A. Inc.Inventors: Jeremy Dahl, Robert Carlson, Shenggao Liu
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Publication number: 20080094724Abstract: Novel optical devices based on diamondoid-containing materials are disclosed. Materials that may be fabricated from diamondoids included diamondoid nucleated CVD films, diamondoid-containing CVD films, molecular crystals, and polymerized materials. Devices that may be fabricated from the diamondoid-containing materials disclosed herein include solid state dye lasers, semiconductor lasers, light emitting diodes, photodetectors, photoresistors, phototransistors, photovoltaic cells, solar cells, anti-reflection coatings, lenses, mirrors, pressure windows, optical waveguides, and particle and radiation detectors.Type: ApplicationFiled: December 22, 2006Publication date: April 24, 2008Applicant: Chevron U.S.A. Inc.Inventors: Jeremy Dahl, Robert Carlson, Shenggao Liu
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Publication number: 20080094725Abstract: PT4NT,040X60 In a process of manufacturing a variable focus lens package, two lens package portions (10, 20) are applied. Each lens package portion comprises a body part (11, 21) and a cover (12, 22), and two filling holes (13, 23) extending through the lens package portion. Furthermore, each body part comprises a central hole (14, 24). In a filling position, the lens package portions contact each other, and fluids (30, 40) are supplied to the central holes of the lens package portions, through filling holes of the opposite lens package portion. Subsequently, the lens package portions are displaced with respect to each other, until the central holes are aligned. In the process, predetermined quantities of the fluids are obtained in the central holes, while superfluous quantities of the fluids remain in the filling holes. Furthermore, the contact between the lens package portions is sealed by means of a lubricant applied between the lens package portions.Type: ApplicationFiled: July 26, 2005Publication date: April 24, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventor: Johannus Wilhelmus Weekamp
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Publication number: 20080094726Abstract: A high magnification zoom lens system includes first through fifth lens groups respectfully arranged sequentially from an object side. At least one of the first through fifth lens groups moves during magnification change, the first lens group comprises a reflection member, and the zoom lens system satisfies the conditions 3.8 ? f T f W ? 6.0 ? ? and ? ? 1.50 ? L T f T ? 1.88 , wherein “fW” denotes the focal distance at the wide angle position, “fT” denotes the focal distance at the telephoto position, and “LT” denotes the overall length of the zoom lens system from the lens surface on the object side to an image plane, at the telephoto position.Type: ApplicationFiled: August 15, 2007Publication date: April 24, 2008Applicant: Samsung Techwin Co., Ltd.Inventor: Min Heu
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Publication number: 20080094727Abstract: A zoom lens includes a first lens group with a negative refractive power and a second lens group with a positive refractive power, wherein the second lens group is disposed between the first lens group and an image side, and the first lens group and the second lens group are suitable for moving between an object side and the image side. In addition, the first lens group includes a first lens with a negative refractive power, and the first lens is a meniscus lens with a convex surface facing the object side and has an Abbe number greater than 50. A focal length of the zoom lens is F, a focal length of the first lens group is F1, a curvature radius of a surface facing the second lens group of the first lens is R2, and ?0.6<F/F1<?0.2, 0.7<R2/F<1.8.Type: ApplicationFiled: July 30, 2007Publication date: April 24, 2008Applicant: YOUNG OPTICS INC.Inventors: Yi-Hao Kang, Chien-Hsiung Tseng, Yu-Hung Chou
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Publication number: 20080094728Abstract: A camera having a lens barrel housed therein includes a reflection optical member for reflecting a light beam incident along a first optical axis (O1) from a subject so as to reflect the light beam toward a second optical axis (O2) intersecting the first optical axis; a light-quantity adjusting member for adjusting the quantity of incident light from the subject; and a drive source for displacing the light-quantity adjusting member, in which by displacing the light-quantity adjusting member, the quantity of the incident light from the subject can be adjusted, and the light-quantity adjusting member is displaced in a direction substantially perpendicular to an optical axial plane inclusive of the first optical axis and the second optical axis so as to adjust the light-quantity.Type: ApplicationFiled: December 6, 2007Publication date: April 24, 2008Applicant: Olympus CorporationInventors: Naoki Matsumoto, Hitoshi Yoshida, Akira Futami, Toshifumi Nakano, Tsuyoshi Kawai
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Publication number: 20080094729Abstract: In a lens barrel having an image pickup optical system including a first lens frame held movably in the optical axis direction for holding at least one lens and a second lens frame held movably in the optical axis direction for holding at least one lens, the first lens frame has a movable member which moves in the direction perpendicular to the optical axis in correspondence with the movement of the first lens frame in the optical axis direction, and has a cam connection with the second lens frame, thus the second lens frame moves in correspondence with the movement of the first lens frame in the optical axis direction.Type: ApplicationFiled: October 15, 2007Publication date: April 24, 2008Inventor: Yoshifumi Mitani
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Publication number: 20080094730Abstract: A lens apparatus includes a plurality of lenses movable in a direction of the optical axis, a guide pole that extends in the direction of the optical axis and that is moved integrally with arbitrary lenses among the lenses, and a slide unit that is slidable along the guide pole and that is moved integrally with others lenses among the lenses. This makes an optical axis of the other lens moving along the guide pole to be aligned with an optical axis of the lens apparatus, by adjusting a position of the arbitrary lenses so that an optical axis of the arbitrary lenses is aligned with the optical axis of the lens apparatus.Type: ApplicationFiled: August 28, 2007Publication date: April 24, 2008Inventor: Yusuke Toma
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Publication number: 20080094731Abstract: Miniature telescopes of both Galilean and astronomical design are fashioned to allow bi-level viewing, simultaneously, of both magnified scope images and non magnified normal images of both far and near objects or areas. Improvements in bi-leveling telescopes involve: objective lens aspherics, ocular lens materials of high refractive indices, anti-reflective fabric like materials for internal light control. This combination of innovations results in a bi-levelable miniature telemicroscope displaying wider magnified fields which display brighter and clearer imagery. Peripheral chromatic and spherical aberrations are considerably reduced even in shorter length telescope units. These shorter length scopes are spectacle mounted in such a way that the front surface of a spectacle carrier lens is coplanar with the telescope objective lens. Tintings and other coatings can now be applied to any of the scope's lenses or internal disks as well as to spectacle carrier lenses.Type: ApplicationFiled: September 17, 2007Publication date: April 24, 2008Inventor: D. Edwards
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Publication number: 20080094732Abstract: It is to provide an imaging lens that can maintain optical performance and actualize size and weight reduction. The imaging lens comprises, in order from an object side to an image surface side, a first lens that is a meniscus lens having a positive power whose convex surface faces the object side, a diaphragm, a second lens that is a meniscus lens having a positive power whose convex surface faces the image surface side, and a third lens that is a biconcave lens having a negative power, wherein a condition expressed by 0.11<d4/fl?0.25 (where, d4: distance between the second lens and the third lens on the optical axis, and fl: focal distance of the entire lens system) is to be satisfied.Type: ApplicationFiled: September 28, 2007Publication date: April 24, 2008Inventor: Tomohiro Saito
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Publication number: 20080094733Abstract: It is to provide an imaging lens that can maintain optical performance and actualize size and weight reduction. The imaging lens comprises, in order from an object side to an image surface side, a first lens that is a meniscus lens having a positive power whose convex surface faces the object side, a diaphragm, a second lens that is a meniscus lens having a positive power whose convex surface faces the image surface side, and a third lens that is a biconcave lens having a negative power, wherein conditions expressed by 0.023?d4/fl?0.11 and 0.068<f1/f2?0.8 (where, d4: distance between the second lens and the third lens on the optical axis, fl: focal distance of the entire lens system, f1: focal distance of the first lens, and f2: focal distance of the second lens) are to be satisfied.Type: ApplicationFiled: September 28, 2007Publication date: April 24, 2008Inventor: Tomohiro Saito
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Publication number: 20080094734Abstract: The refractive, transmissive or diffractive optical elements are made from a ceramic containing one or more oxides of the type X2O3, which is transmissive for visible light and/or for infrared radiation and which has a cubic crystal structure analogous to that of Y2O3. In preferred embodiments X is Y, Sc, In, or a lanthanide element, namely La to Lu, and in particular is Lu, Yb, Gd, or La. Also mixtures of oxides of the type X2O3 with oxides having different stoichiometries, such as HfO2 and/or ZrO2, may be present, as long as the cubic structure of the ceramic is maintained.Type: ApplicationFiled: June 13, 2007Publication date: April 24, 2008Inventors: Jose Zimmer, Ulrich Peuchert, Jochen Alkemper, Martin Letz, Steffen Reichel, Yoshio Okano, Yvonne Menke
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Publication number: 20080094735Abstract: Disclosed is a magnification assembly configured to assist users of portable devices in reading user interface features such as a display or a keypad. Versions of the magnification assembly include a retainer having an attachment surface and an aperture, wherein the retainer is operably configured to receive a magnifying member. The retainer may be adhesively coupled to the portable device with the attachment surface.Type: ApplicationFiled: October 24, 2006Publication date: April 24, 2008Inventor: Robert T. Chelberg
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Publication number: 20080094736Abstract: A method of mounting an optical component is provided with the steps of pressing an optical component to a mounting surface of a housing, separating the optical component from the mounting surface within a prescribed distance while remaining parallel with the mounting surface, adjusting the position and angle of the optical component, and fixing the optical component to the mounting surface. The prescribed distance is preferably 1 ?m or more and 300 ?m or less. The step of fixing the optical component includes the steps of applying a UV-curable adhesive so that the optical component is affixed to the mounting surface, and fixing the optical component by irradiating UV light to cure the UV-curable resin.Type: ApplicationFiled: October 10, 2007Publication date: April 24, 2008Applicant: TDK CORPORATIONInventors: Sho NAKAGOMI, Teiichiro OKA
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Publication number: 20080094737Abstract: An object lens unit for an optical pickup device is disclosed. The object lens unit includes a first optical element facing an optical information recording medium; a second optical element positioned on a light source side of the first optical element; and a frame in which the first optical element and the second optical element are fixed. The frame includes a first fitting portion and a second fitting portion, and has a prescribed clearance in a perpendicular direction to the optical axis between at least one of the first fitting portion of the frame and the first optical element, and the second fitting portion of the frame and the second optical element to adjust a position of at least one of the first optical element and the second optical element in a perpendicular direction to the optical axis. An optical pickup device including such object lens unit is also disclosed.Type: ApplicationFiled: November 26, 2007Publication date: April 24, 2008Inventors: Shogo Yamamoto, Yuichi Atarashi, Kazuhiro Wada, Tsutomu Shimizu
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Publication number: 20080094738Abstract: A lens barrel assembly of a camera module and a laser apparatus for assembling the lens barrel assembly are provided. The lens barrel assembly of a camera module includes: at least one lens; a barrel provided with a lens exposing hole having a predetermined size which is formed to penetrate a central portion of a closed upper surface of the barrel, wherein the lens is inserted from an lower opening of the barrel toward the lens exposing hole; and a stopping protrusion which is formed by fuse-securing a fused material on a boundary region between an outer circumference of the lens and an opened inner surface of the barrel by illumination of a laser beam on the opened inner surface of the barrel.Type: ApplicationFiled: October 3, 2007Publication date: April 24, 2008Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTDInventor: Young Lee
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Publication number: 20080094739Abstract: An adjustable mirror apparatus suitable for operatively connecting to a mining truck or other prime mover to facilitate sight of extremities of the truck or prime mover from a cab is described. The adjustable mirror apparatus comprises, in a broad form, a reflecting assembly including a reflecting surface for displaying a reflected image of the one or more extremities of the truck, the reflecting assembly including an adjustment means for rotating the reflecting assembly about roll, and/or pitch and/or yaw axes relative to the truck or prime mover; and a manually releasable locking means operatively connected to the reflection assembly for controlling the rotation of the reflecting assembly. A replaceable mirror element is also described, as well as a mirror having a replaceable mirror element, and an adjusting mechanism.Type: ApplicationFiled: October 24, 2006Publication date: April 24, 2008Inventor: Catherine Louise Constable
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Publication number: 20080094740Abstract: Embodiments of the present invention pertain to determining the reliability of a disk drive. According to one embodiment, values for a parameter associated with a particular type of component of the disk drive are detected while simulating customer usage of the disk drive. The values are stored to enable analyzing the values for statistical variations to determine the reliability of the disk drive.Type: ApplicationFiled: October 23, 2006Publication date: April 24, 2008Inventors: Chris C.L. Lin, Robert T. Longbottom, Carla Q. Nunez, Masatoshi Mizumachi
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Publication number: 20080094741Abstract: A hard disk device has a temperature detection device operable to detect a temperature in the hard disk device. A controlling section is operable to control functions of an electronic apparatus. A notifying section is operable to notify an abnormality of the electronic apparatus. The controlling section acquires the temperature detected by the temperature detection device from the hard disk device. The controlling section controls the notifying section to notify the abnormality of the electronic apparatus when the acquired temperature is higher than a reference temperature.Type: ApplicationFiled: October 11, 2007Publication date: April 24, 2008Applicant: Funai Electric Co., Ltd.Inventor: Shinji Yoshida
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Publication number: 20080094742Abstract: Servo patterns for patterned media. The servo pattern includes specification of cylinder/track ID with and without a Gray code. The servo pattern space is minimized by the optimum usage of the islands. This is achieved by island allocation rules to take advantage of non-magnetic island. The island allocation also provides for easier lift-off. Logic is used to encode and decode the Gray code. Further, the Gray code is designed to stabilize the magnetic island/non-magnetic island ratio to allow for easier manufacture.Type: ApplicationFiled: October 19, 2006Publication date: April 24, 2008Inventors: Thomas Robert Albrecht, Mario Blaum, Ksenija Lakovic, Bruce Alexander Wilson, Satoshi Yamamoto
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Publication number: 20080094743Abstract: One embodiment in accordance with the invention is a method for measuring a track width for a magnetic recording head comprising writing a first track and a second track on a disk at two different positions. Note that the first track is written at a frequency plus a frequency shift value while the second track is written at the frequency minus the frequency shift value.Type: ApplicationFiled: February 20, 2007Publication date: April 24, 2008Inventors: Yong Shen, Mike X. Wang, Jing Zhang
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Publication number: 20080094744Abstract: A method of evaluating a magnetic recording medium using a magnetic head having a reproduction element is disclosed The method includes the steps of (a) recording a signal in a predetermined area of the magnetic recording medium; (b) determining a first value of a reproduction output by reproducing the predetermined area of the magnetic recording medium; (c) determining a second value of the reproduction output by emitting an energy line having a power of a predetermined value onto the predetermined area and reproducing the predetermined area with the reproduction element during or after the emission of the energy line; and (d) calculating a change in the reproduction output due to the emission of the energy line based on the first value and the second value of the reproduction output.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: Fujitsu LimitedInventor: Akihiro Inomata
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Publication number: 20080094745Abstract: According to one embodiment, a playback equipment includes a recording section which records information on a magnetic disc C, a motor which rotates the magnetic disc, a nonvolatile memory B which stores information in a recording area, a display section which displays the information on a screen, a playback section which performs a playback process in response to the above information, and a control section which increases speed of the motor in a stepwise fashion and supplies the information stored in the nonvolatile memory to the display section or playback section in a preset period of time after an operation signal from an operating section is received and controls the motor to rotate at constant speed after the preset period of time has elapsed.Type: ApplicationFiled: October 22, 2007Publication date: April 24, 2008Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Hideyuki Iketani
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Publication number: 20080094746Abstract: A disk drive correctly recognizes newly written data when a plurality of readable data exist on the same sector of the same track, by comparing AGC values of each of the readable data, comparing error rates generated by Viterbi decoding, or both. An offset value determining means determines whether an offset value when the data is read has exceeded a predetermined value when the data is read. An offset control means controls the head, on the basis of the determination result of the offset value determining means, to conduct the offset operation on the opposite side of the track when the data is read the first time, and a selecting means selects the new data recorded in the sector by comparing the results obtained for both sets of data.Type: ApplicationFiled: May 10, 2007Publication date: April 24, 2008Applicant: Fujitsu LimitedInventor: Osamu Yoshida
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Publication number: 20080094747Abstract: A disk drive slit shroud mitigates a discontinuity in the bypass channel with an additional wall feature formed on the slit shroud. When installed, the wall feature fills the gap in the wall of the bypass channel that would otherwise be required to accommodate a slit shroud of sufficient surface area. The discontinuity in the channel wall is needed for manufacturing clearance during the installation of the slit shroud. The slit shroud design includes the wall feature which, when installed, fills up the gap in the channel wall to maintain a relatively flush conduit for the bypass channel.Type: ApplicationFiled: October 19, 2006Publication date: April 24, 2008Inventors: Andre S. Chan, Chisin Chiang, James Francis Sullivan, Ferdinand Hendriks
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Publication number: 20080094748Abstract: A hard disk drive that at least one disk that is rotated by a spindle motor. The rotating disk creates a flow of air within the disk drive. A damper is located adjacent to the disk. The damper reduces the velocity of the air flow and any vibration associated with the flow of air.Type: ApplicationFiled: October 24, 2006Publication date: April 24, 2008Inventors: Yun-Sik Han, Joseph Chang, Myeong Eop Kim, Haesung Kwon, Hyung Jai Lee
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Publication number: 20080094749Abstract: A transducing device responsive to magnetic fields includes a writer, a reader, an actuator, and a void. The actuator is positioned proximate the writer and reader. The void is positioned between at least one of the reader and writer and a substrate of a sensing device. The void is also positioned proximate an external surface.Type: ApplicationFiled: October 24, 2006Publication date: April 24, 2008Applicant: Seagate Technology LLCInventor: Wayne A. Bonin
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Publication number: 20080094750Abstract: A perpendicular magnetic recording (PMR) head with single or double coil layers has a small write shield stitched onto a main write shield. The stitched shield allows the main write pole to produce a vertical write field with sharp vertical gradients that is reduced on both sides of the write pole so that adjacent track erasures are eliminated. From a fabrication point of view, both the main pole and the stitched shield are defined and formed using a single photolithographic process, a trim mask and CMP lapping process so that the main shield can be stitched onto a self-aligned main pole and stitched shield.Type: ApplicationFiled: December 11, 2007Publication date: April 24, 2008Inventors: Cherng-Chyi Han, Kenichi Takano
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Publication number: 20080094751Abstract: A method of forming a thin-film magnetic head comprises a lower magnetic pole layer forming step of forming a lower magnetic pole layer; a lower magnetic pole projection forming step of forming the lower magnetic pole layer with a lower magnetic pole projection; a gap layer forming step of laminating a nonmagnetic gap layer on the lower magnetic pole projection; and an upper magnetic pole forming step of forming an upper magnetic pole on the nonmagnetic gap layer. The lower magnetic pole projection forming step forms the lower magnetic pole projection by simultaneously etching an area including parts adjacent to a part to become the lower magnetic pole projection on both sides in a track width direction and a part adjacent to the part to become the lower magnetic pole projection on the side opposite from a medium-opposing surface in a surface of the lower magnetic pole layer.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: TDK CORPORATIONInventors: Hiraku Hirabayashi, Yoshiyuki Mizoguchi
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Publication number: 20080094752Abstract: A method to write information to, or retrieve information from, an information storage medium disposed within a portable data storage cartridge moveably disposed in a data storage and retrieval system, wherein the data storage and retrieval system further comprises a data storage device. The portable data storage cartridge comprises a moveable curved door slidingly disposed within the enclosure, and a tape reel rotatably disposed within the enclosure, wherein the moveable curved door and the tape reel are non-concentric. The method retrieves the portable data storage cartridge from a storage slot, transports that portable data storage cartridge to a data storage device, disposes the portable data storage cartridge in the data storage device. The method further moves the moveable curved door from said a position to a second position, and reads information from and/or writes information to, the information storage medium.Type: ApplicationFiled: December 20, 2007Publication date: April 24, 2008Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Reed Hancock, James Jackmond, Linda Daanen, Joseph Ramirez
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Publication number: 20080094753Abstract: The invention concerns a transducer device and assembly. A transducer device and assembly according to the invention comprise sheet of electrical insulator covering connection pads of a transducer component. The sheet of electrical insulator has on its surface connection pads that have galvanic contacts with the connection pads of the transducer component. Inside or on a surface of the sheet of electrical insulator there are electrical conductors connected with the connection pads of the sheet of electrical insulator. With the aid of the sheet of electrical insulator equipped with the connection pads and electrical conductors the transducer component can be mounted to a wiring board in a desired orientation, i.e. the connection pads of the transducer component do not need to be against the wiring board.Type: ApplicationFiled: October 24, 2006Publication date: April 24, 2008Inventors: Panu Brodkin, Tapio Liusvaara
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Publication number: 20080094754Abstract: A method of manufacturing a head assembly improves the attachment position precision of a gimbal and a slider with a head, increases the efficiency of the attachment process, and can be carried out at low cost using small-scale equipment. The method of manufacturing includes an adhesive applying step of applying adhesive onto a gimbal; a slider setting step of setting a slider on the gimbal so that part of the adhesive sticks out from a side surface of the slider; a first hardening step of hardening the part of the adhesive that sticks out from a side surface of the slider; and a second hardening step of hardening a part of the adhesive between the gimbal and the slider.Type: ApplicationFiled: April 19, 2007Publication date: April 24, 2008Applicant: FUJITSU LIMITEDInventors: Atsuo Makino, Kenichi Makino
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Publication number: 20080094755Abstract: The present invention provides a thin-film magnetic head which surely improves the writing and reading characteristic with reducing the flying height and surely handles the contact or collision with the magnetic recording medium. A thin-film magnetic head is provided, which includes, an substrate with ABS; a read or write head element provided on an element-formed surface of the substrate; at least one protrusion adjustment portion whose end reaches a slider end surface on the ABS side, which provides on an element-formed surface of the substrate; at least one heating portion provided rear at least one protrusion adjustment portion viewed from the slider end surface on the ABS side.Type: ApplicationFiled: October 17, 2007Publication date: April 24, 2008Applicant: TDK CORPORATIONInventors: Norikazu OTA, Tetsuya ROPPONGI, Hiraku HIRABAYASHI, Yuichi WATABE
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Publication number: 20080094756Abstract: There is provided a carriage assembly of a hard disk drive where a convex pattern that makes it possible to mount a magnetic head with high precision in parallel on a gimbal is provided on the gimbal and where it is possible to use the same convex pattern regardless of whether a U-shaped pressing member is used or a pressing member shaped like geta teeth is used as the pressing member when mounting the magnetic head on the gimbal, which makes it unnecessary to redesign the convex pattern in accordance with the construction of a magnetic disk and thereby reduces the design cost.Type: ApplicationFiled: December 13, 2007Publication date: April 24, 2008Applicant: Fujitsu LimitedInventors: Kenichi Makino, Atsuo Makino
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Publication number: 20080094757Abstract: An apparatus which provides improved positional control for an access element moveable adjacent a rotatable surface, such as a data transducing head adjacent a data recording disc in a data storage device. The apparatus comprises a fluidic stripper with one or more cantilevered arms which project proximate a corresponding array of one or more rotatable surfaces. Each arm comprises an edge surface which extends proximate to and in facing relationship with a movement path of an access element across the associated rotatable surface to impede fluidic currents established by rotation of the rotatable surface. Each arm further supports a ramp structure which receivingly supports the access element at a position away from the rotatable surface and proximate the innermost diameter during a deactivated mode when the rotatable surface is stationary.Type: ApplicationFiled: December 21, 2007Publication date: April 24, 2008Applicant: Seagate Technology LLCInventors: Matthew Duvall, Cory Welscher, Kenneth Pottebaum, Jackson Nichols
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Publication number: 20080094758Abstract: A piezoelectric actuated suspension with passive damping is disclosed for precision positioning of hard disk drive while reducing undesired shock vibrations. Along the longitudinal axis of an etched suspension, two piezoelectric actuators dispose near the base plate to provide a push-pull motion. The actuators have two main portions. The first portion is piezoelectric elements to provide active positioning. The second portion is viscoelastic damping layers underneath the piezoelectric elements for passive damping. The complementary parts such as stiff edge elements and optional soft boundary covers are used to enhance the actuating abilities of the actuators and prevent any contaminants of the viscoelastic layers from going into the clean sealed chamber of the hard disk drive, respectively.Type: ApplicationFiled: October 23, 2006Publication date: April 24, 2008Applicant: The Chinese University of Hong KongInventors: Wei-Hsin Liao, Kwong-Wah Chan
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Publication number: 20080094759Abstract: A method of making a perpendicular magnetic recording (PMR) head with single or double coil layers and with a small write shield stitched onto a main write shield. The stitched shield allows the main write pole to produce a vertical write field with sharp vertical gradients that is reduced on both sides of the write pole so that adjacent track erasures are eliminated. From a fabrication point of view, both the main pole and the stitched shield are defined and formed using a single photolithographic process, a trim mask and CMP lapping process so that the main shield can be stitched onto a self-aligned main pole and stitched shield.Type: ApplicationFiled: December 11, 2007Publication date: April 24, 2008Inventors: Cherng-Chyi Han, Kenichi Takano
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Publication number: 20080094760Abstract: Provided are a data storage device using a magnetic domain wall movement and a method of operating the data storage device. The data storage device includes a magnetic layer including a plurality of magnetic domains, first and second ferromagnetic pinned layers formed on lower and upper surfaces of the magnetic layer, respectively, and having opposite magnetization directions, first and second insulating spacers interposed between the first and second ferromagnetic pinned layers and the magnetic layer, respectively, and an energy supplying unit applying energy to the magnetic layer for a magnetic domain wall movement.Type: ApplicationFiled: May 23, 2007Publication date: April 24, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-chul Lee, Sung-hoon Choa, Yong-su Kim