Abstract: Image disturbance called speckle noise occurs when an image generator has a small effective screen size and a projection lens has a small effective diameter. The present invention is intended to reduce speckle noise. In an optical projector, a viewing angle enlarging ember (60) for enlarging viewing angle or a scattering member (28) for scattering image light is disposed near an image display device (18), such as a liquid crystal panel. Speckle noise can be reduced, suppressing the deterioration of resolution and contrast.

Abstract: A compact, lightweight, multi-wavelength display system which can be used as a collimating eyepiece. A first polarization selective optical element reflects light have one linear polarization state while transmitting light having the orthogonal linear polarization state. A first quarter-wave plate transforms the linearly polarized light to a circular polarization. A combining optical element with a partially reflective surface reflects a portion of the transformed light and transmits a portion of the transformed light. A second quarter-wave plate transforms the circularly polarized light back to a linear polarization. A second polarization selective optical element reflects light have one linear polarization state while transmitting light having the orthogonal linear polarization state.

Abstract: A cleaning assembly cleans an exterior surface of a motor vehicle. The exterior surface defines first and second edges. The motor vehicle includes a cleaning fluid reservoir. The cleaning assembly includes a connector for connecting the cleaning fluid reservoir with the cleaning assembly for receiving fluid therefrom. A distribution chamber is in fluid communication with the connector and receives the fluid received by the connector. The cleaning assembly also includes a nozzle fixedly secured to the distribution chamber for disbursing the fluid over the exterior surface. The nozzle includes a nozzle opening that defines a slot opening such that a film of fluid exits the nozzle opening over the exterior surface.

Abstract: A corrugated pattern forming sheet exhibiting excellent performance when being used as optical elements, such as an antireflector and a retardation plate is provided. A corrugated pattern forming sheet of the invention includes a resin layer, and a hard layer provided at least in a portion of an outer surface of the resin layer. The hard layer is made of a metal or a metallic compound. The hard layer has a wavelike corrugated pattern. The average pitch of the corrugated pattern is 1 ?m or less, and the average depth of the bottom of the corrugated pattern is 10% or more given an average pitch of 100%.

Abstract: The invention relates to an optical layer system having antireflection properties, where a layer package comprising a first layer having a refractive index in the range from 1.20 to 1.37 and a second, smooth layer having a refractive index of from 1.40 to 1.48 is located on at least one surface of a transparent, planar substrate, to a process for the production thereof, and to the use thereof.

Abstract: There is provided a light diffusing member for use in a transmission screen, which has an excellent surface protective effect while maintaining an antireflection effect. The light diffusing member for use in a transmission screen comprises a hard coat layer provided on a surface of a substrate having a single or multilayer structure. The substrate contains fine particles, and the surface gloss of the hard coat layer as measured under conditions of incident angle 60°/reflection angle 60° is 60 to 80 by supposing the surface gloss of a gloss standard plate to be 100.

Abstract: A light control film comprising a downward prism sheet and a light diffusing sheet having a rough surface as a surface facing the downward prism sheet, which solves the problem of mutual scratching of constituent members. The light control sheet of the present invention comprises at least a light diffusing film and a prism sheet disposed as a laminate. One surface of the light diffusing film is a light diffusing surface, and the other surface is a rough surface. One surface of the prism sheet is a prism surface, and the other surface is a smooth surface. The smooth surface is constituted by a smooth layer containing at least a comb polymer. By this configuration, the facing surfaces comes to be hardly scratched, in spite of the structure in which the rough surface of the light diffusing film and the smooth surface of the prism sheet are disposed to face each other.

Abstract: An optical device is used for processing a laser beam. It includes an optical element into which at least one input beam is coupled and out of which an output beam emerges.

Abstract: A method for manufacturing a resin optical component in which a light-shielding may easily be formed is provided. A laser beam is focused on a given position in the resin having a high light transmittance to concentrate the energy to the focal point, resulting in a small dot-like discolor by carbonization of resin. A component of small dot-like discolored portions are formed in the resin to provide a light-shielding wall having a high light absorptance in the interior of the resin having a high light transmittance. The light-shielding wall may remove the stray light which is the light that is obliquely incident on a lens, passes through the lens array plate in a thickness direction thereof, and outgoes from the neighbored lenses.

Abstract: A controllable optical lens system comprises a chamber housing first and second fluids, the interface between the fluids defining a lens surface. An electrode controls the shape of the lens surface and has first and second electrodes. The current supplied by a power source to the electrode arrangement is monitored, and the charge supplied is derived. The voltage on one of the electrodes of the electrode arrangement is also monitored. A desired lens power is used to derive a control value for controlling the total charge to be supplied to the electrode arrangement. The drive scheme is independent of some of the lens characteristics, and is more easily implemented than a feedback control system using capacitive sensing.

Abstract: There is provided a compact zoom lens with a small lens aperture which projects an image from a light bulb such as mainly a DMD (Digital Micromirror Device) which forms an image by changing reflecting directions of light on to a screen or the like in an enlarged fashion.

Abstract: A zoom lens comprises, in the following order from the object side to the image side, a positive first lens unit, a negative second lens unit, which moves during zooming, a positive third lens unit, and a positive fourth lens unit, which moves during zooming. The first lens unit includes a negative lens subunit and a positive lens subunit. The negative lens subunit includes at least two negative lenses each having a concave surface facing the image side and at least one positive lens arranged from the object side. The positive lens subunit includes at least one biconvex positive lens, a negative lens and at least two positive lenses arranged from the object side, or at least one biconvex positive lens, a cemented lens composed of a negative lens and a positive lens and at least one positive lens arranged from the object side.

Abstract: There is provided an imaging lens including a first lens having a positive refracting power, a second lens having a concave surface on an object side and having a negative refracting power, and a third lens having a positive refractive power and a meniscus shape having a convex surface on the object side and at a vicinity of an optical axis, in order from the object side. The imaging lens satisfies conditional equations below. f designates a focal length of the total system, f1 designates a focal length of the first lens, D2 designates an interval between the first lens and a second lens on an optical axis, v123 designates an average of Abbe numbers of the first lens, the second lens and the third lens, and v2 designates the Abbe number of the second lens. 0.7<f1/f<1.3 ??(1) 0.25<D2/f<0.

Abstract: A lens barrel includes a helicoid ring provided with a helicoid; a retractable rotational ring which is guided by the helicoid to move along an optical axis while rotating, wherein the retractable rotational ring includes a pair of split retractable rotational rings which are supported so as to integrally rotate and to be relatively movable in the optical axis direction with respect to each other; first and second slide-engaging portions provided on one and the other of the pair of split retractable rotational rings, wherein the first and second slide-engaging portions are slidably engaged with the helicoid; and a biasing device which biases the pair of split retractable rotational rings in opposite directions in the optical axis direction so that the first and second slide-engaging portions are pressed in opposite directions against an opposing pair of first and second guide surfaces, respectively, of the helicoid of the helicoid ring.

Abstract: Devices, methods and systems for image viewing. Various example embodiments of devices, methods and systems for image viewing are disclosed. In one or more example embodiments, the disclosure provides devices, methods and/or systems for image viewing, having one or more of: modular characteristics; telecentric characteristics; lens designs; lens designs in combination with other optical components; an image viewer and headgear as components of a head mounted display; a combination of an image viewer, headgear, and connection technologies as components of a head mounted display, whereby the connection technologies support modular characteristics by enabling detachable connection of one or more expansion components.

Abstract: A light guide lens includes a lens body having a light incidence surface and a light emission surface, a plurality of refraction structures formed on the light incidence surface, and a plurality of reflection structures formed on the light emission surface. The refraction structures send incoming light rays to the light emission surface by refraction. Each of the refraction structures turns incoming light rays coming in all directions into refracted parallel light rays. The refracted parallel light rays arriving from the refraction structures reflect off the corresponding reflection structures and then laterally exit the lens body. The refracted parallel light rays arriving from each of the refraction structures travel to a corresponding one of the reflection structures, such that eventually the incoming light rays exit laterally. The present invention further provides a light emitting diode package structure having the light guide lens.

Abstract: The device has flexure correcting means for operating to rotate a first eccentric cam provided at a central part of a first side of a reflecting mirror, thereby moving up and down the central part of the first side to correct the flexure of the reflecting mirror, torsion correcting means for operating to rotate a second eccentric cam or/and a third eccentric cam provided at the ends of a second side opposed to the first side of the reflecting mirror, thereby moving up and down both ends of the second side of the reflecting mirror to correct the torsion of the reflecting mirror, and a rotation operation portion provided at each of extended ends of camshafts provided at the eccentric cams to correct the flexure and torsion of the reflecting mirror.

Abstract: An objective lens, a lens drive mechanism, an optical pickup apparatus, and a method for assembling the same, that are capable of making the apparatuses lighter and keeping the weight balance in a well-balanced state are provided. An objective lens recess portion is formed at a position that is symmetrical, with respect to the optical axis, to a gate remainder on a objective lens. In a state where the objective lens is held on a counterbore portion of a lens holder, the objective lens is rotated about the optical axis thereof to a desired position, and then an adhesive is applied to a portion facing the gate remainder and a portion facing the objective lens recess portion, of the counterbore portion of the lens holder.

Abstract: A portable magnification stand includes a lower inner plane area surrounded by and held in place by a lower coplanar support material. A back pair of adjustable arms and a front pair of adjustable arms are mounted to the lower planar base unit and an upper planar lens unit that holds a lens for magnifying objects. The back pair of adjustable arms are longer than the front pair of adjustable arms causing the magnification of objects to appear greater near the front portion of the upper planar lens unit compared with objects near the near the back portion of the upper planar lens unit. Swingable extensions shaped as trapezoidal planar materials can be used in lieu of the adjustable arms to provide the appropriate magnification in a more compact and lighter weight design.

Abstract: An optical module (100) includes a lens barrel (10), a lens module (20), a filter (40) and a clip (50). The lens barrel defines a groove in an inner periphery thereof. The lens module is received in the lens barrel. The clip is received in the groove of the lens barrel, so as to fix the lens module in the lens barrel. The filter is received in the lens barrel, between the lens module and the clip.

Abstract: A Fabry-Perot filter is applied as a thin coating on a film, for example, a packaging film, and permits interesting color effects. The coating has a layered construction in which both reflecting layers of the filter may be made of aluminum and the intermediate layer between the reflecting layers may be made of aluminum oxide.

Abstract: An optical device chip includes: a first semiconductor layer of a first conductivity type; an optical layer that emits light or receives light formed above the first semiconductor, layer; a second semiconductor layer of a second conductivity type formed above the optical layer; a first electrode electrically connected to the first semiconductor layer; a second electrode electrically connected to the second semiconductor layer; and a connecting section that short-circuits the first electrode and the second electrode.

Abstract: A layer system that filters sun and heat can be applied to glass by a vacuum coating process. The system comprises at least one series of metal layers in addition to a respective series of lower dielectric layers and a respective series of upper dielectric layers. At least one series of metal layers and one series of upper and lower dielectric layers are configured as a sandwich system, wherein one metal layer is encapsulated by an upper and a lower intermediate layer consisting of hypostoichiometrically nitrided or oxidized metal of the metal layer and sandwich systems of the series of layers contain individual sandwich layers of a stoichiometric and hypostoichiometric oxide or nitride of a metal or semiconductor. An oxygen or nitrogen deficit of the sandwich layers increases towards a neighboring sandwich system and the oxide and nitride layers are produced in a vacuum coating process.

Abstract: Servo demodulation is performed by appropriately compensating for demodulation errors caused by fluctuation of the replayed signal amplitude of a phase servo pattern. A servo demodulating circuit comprises single waveform sampling means for reading into a register a single waveform of a servo burst signal included in a phase servo signal based on a sampling clock synchronized by clock synchronization means, single waveform digitizing means for calculating an amplitude value of the single waveform of the servo burst signal from peak and bottom of the single waveform of the servo burst signal read into the register, and for standardizing a value of the register based on an amplitude value of the single waveform of the servo burst signal, and phase information calculation means for calculating phase information of the single waveform of the servo burst signal based on the value of the register standardized by the waveform digitizing means.

Abstract: Embodiments of the present invention help to efficiently determine the appropriate setting of the write current of a magnetic head relative to temperature. According to one embodiment, a test computer determines the set value of a write current as a function of temperature for each head device portion from the relationship between a write current and an error rate. A test execution controller sets a selected head device portion and a write current to an AE, and writes data on a magnetic disk using the components in a HDD. The test execution controller reads the written data, and the error rate of the data from an error correcting section. The test execution controller repeats the same process with the write current varied. Upon completion of the measurement at the preset write currents, the test execution controller transfers the measurement data to the test computer.

Abstract: The present invention provides a recording medium that allows the content provider to control messages. The recording medium is provided by a content provider and records thereon content and a program which is executed at the time of playback of the content by a playback apparatus. The program causes the playback apparatus to execute: an interacting step of interacting with a different program prestored in the playback apparatus and executed at the time of the playback of the content; and an output step of transmitting, to the different program, a message determined according to the result of the interaction.

Abstract: Embodiments in accordance with the present invention help a disk drive to effectively cope with a data address mark detection error. In one embodiment, a data sector is provided with plural data address marks and an read/write (RW) channel reads out the data sector using part of those data address marks. Each divisional section of a split sector has two data address marks and the RW channel uses one of the two data address marks. A data address mark to be used is specified by a register. When an error occurs in detecting a data address mark, its position is stored in a register. Based on the error position, an error recovery processing section stores, in the register, a data address mark to be used in a next retry.

Abstract: Methods according to some embodiments include writing servo patterns on a data storage medium including a plurality of timing patterns in response to phase correction values generated using a phase correction value (PCV) kernel having a length that is less than the number of timing patterns on the data storage medium.

Abstract: The disclosure describes a data storage system that includes a signal defect correction system for removing signal defects in magnetoresistive head playback signals. The signal defect correction system utilizes a matched finite impulse response (FIR) filter and digital signal processing algorithms. The matched FIR filter is designed with an impulse response that is the time reversed, complex conjugate of a signal defect model. The signal defect model is generated from a number of sample playback signals. The matched FIR filter is applied to the playback signal and digital signal processing techniques are applied to the filter response to detect a signal defect in the playback signal and estimate the amplitude and location of the signal defect. The signal defect model is retrieved from memory and applied to the playback signal using the amplitude and location estimates to substantially remove the signal defect from the playback signal.

Abstract: In one embodiment, a method and apparatus for minimizing unload times in a tape drive system is disclosed. The method includes: writing to a tape in serpentine format; reaching a comparison point on the tape, wherein at the comparison point an actual capacity is compared to an expected capacity; utilizing the comparison at the comparison point to estimate a distance from the comparison point until a guaranteed capacity for the tape is reached; and determining a turn-around point on the tape based on the estimated distance, wherein at the turn-around point a tape drive writing to the tape to stop writing in a first direction and then continue writing in a second direction opposite from the first direction and towards a physical beginning of the tape. Other embodiments are also disclosed.

Abstract: A data reading unit reads inner offset data from an offset reading in an inner direction toward a center of a storage medium and outer offset data from an offset reading in an outer direction toward a circumference of the storage medium. A data comparing unit compares the inner offset data and the outer offset data read by the data reading unit. A data-output control unit that outputs the read-data when a result of comparison by the data comparing unit indicates that the inner offset data matches the outer offset data.

Abstract: Embodiments in accordance with the present invention prevent abnormal action of the actuator of a disk drive. According to an embodiment of the invention, in the process of startup (power on reset (POR)), a hard disk drive (HDD) checks whether an arm electronics (AE) port table stored in an EEPROM agrees with the ports of an AE to which head device portions are actually connected before it starts the rotation of a magnetic disk to move the actuator onto a user data area. Thus, even if an HDA and a reused circuit board do not agree at the manufacture of the HDD, the abnormal action of the actuator can be prevented.

Abstract: The present invention is directed to provide a tape drive capable of securely pressing and holding a thin-type or a thick-type loaded tape cartridge being different in case thicknesses, so as to be vertically immovable. The tape drive D accommodates within it a loading frame 28 for receiving and supporting each tape cartridge 40A, 40B being different in case thicknesses and a holder 29 for holding the tape cartridge 40A, 40B by pressing the cartridge. The side wall 31 of the loading frame is provided with a pair of upper and lower sensors 34, 35 for identifying the thin-type and the thick-type loaded tape cartridges. The holder 29 is displaced to a height position matching with the loaded tape cartridge 40A, 40B based on the tape cartridge size detected by the sensors 34, 35.

Abstract: The present invention provides a spindle motor. The spindle motor 100 includes a rotor casing 142 for rotating a recording medium, a rotary shaft 141 securely mounted to the rotor casing 142, a bearing 115 for rotatably supporting the rotary shaft 141, a bearing holder 113 for securely supporting the bearing, with a locking part 114 protruding around the upper end of the outer circumferential surface of the bearing holder 113, and a hooking part 150 provided in the rotor casing 142 to engage with the locking part 114 of the bearing holder 113, thus preventing the rotor casing 142 from being removed from the bearing holder 113. The hooking part 150 has a hook part 153 having a hook-shaped section. The hook part 153 has an angle of inclination of 10° relative to a horizontal surface.

Abstract: The invention provides a magnetic recording/reproducing system constructed such that until the skew angle is past the maximum skew angle ?max, the edges of the write shield layer and the edges of the lower read shield layer do not overlap on the same track, so that upon application of an external magnetic field, the already written signals are kept back from degradation.

Abstract: A thin film magnetic head is provided, in which the amount of protrusion in the periphery of an element portion can be reduced or a local temperature increase of electrode leads of a heating element can be prevented. The thin film magnetic head includes a playback element disposed between lower and upper shield layers, a recording element laminated on the upper shield layer, a heating element which is disposed below a coil layer and which generates heat to allow the playback element to protrude toward the recording medium side through thermal expansion, and a pair of electrode leads including overlapping regions, which are in contact with rear ends of the heating element and which overlap with the upper shield layer, and heat dissipation regions. Furthermore, connection wiring portions of the pair of electrode leads are disposed in a region sandwiched between the upper shield layer and a magnetic layer.

Abstract: A slider according to the present invention includes a slider body, a plurality of insulators, and conductive traces. The slider body has a first side and edges defined substantially perpendicular to the first side. The plurality of insulators are each adjacent to the first side of the slider body. The conductive traces are adjacent to each of the plurality of insulators and opposite the slider body.

Abstract: Exemplary embodiments of the invention provide a method of reworking a magnetic head assembly in which an electrode pad of a magnetic head slider and an electrode pad of a suspension are soldered so as to be perpendicular to each other and in which a defective slider is replaced with a new slider when the magnetic head slider is the defective slider. The method includes planarizing a solder, which bonds the electrode pad of the defective slider and the electrode pad of the suspension, on the electrode pad of the suspension by a hot wind and reusing the planarized solder to bond the electrode pad of the new slider replaced for the defective slider and the electrode pad of the suspension to each other.

Abstract: A disk drive that has an air deflector which deflects at least a portion of airflow away from an actuator arm assembly of the drive. The air flow is typically generated by a rotating disk of the disk drive.

Abstract: A PZT element of the present invention includes a laminated structure which is laminated with electrode layer and PZT layer alternatively to define a thickness direction; wherein each PZT layer is sandwiched between two adjacent electrode layers; and at least one support element provided on a side portion of the laminated structure and substantially extending along a longitudinal direction thereof; wherein the PZT element is bent at least towards a latitudinal direction thereof when being applied an electrical voltage thereon through the electrode layers. The invention also discloses a method of manufacturing the PZT element, a HGA and disk drive unit with the same.

Abstract: Embodiments of the present invention provides sufficiently high exchange coupling with a magnetic layer and improve the yield and reliability of a magnetoresistive head. By using a tilted growth crystalline structured antiferromagnetic film manufactured by an oblique incident deposition method, a high exchange coupling field with a ferromagnetic film can be obtained. As a result, excellent reliability and high output can be obtained in a magnetoresistive head utilizing features in accordance with embodiments of the present invention.

Abstract: An MR element incorporates a nonmagnetic conductive layer, and a pinned layer and a free layer that are disposed to sandwich the nonmagnetic conductive layer. Each of the pinned layer and the free layer includes a Heusler alloy layer. The Heusler alloy layer contains a Heusler alloy in which atoms of a magnetic metallic element are placed at body-centered positions of unit cells, and an additive element that is a nonmagnetic metallic element that does not constitute the Heusler alloy. At least one of the pinned layer and the free layer includes a region in which the concentration of the additive element increases as the distance from the nonmagnetic conductive layer decreases, the region being adjacent to the nonmagnetic conductive layer.

Abstract: The present invention relates to a magnetoresistive (MR) effect element which can effectively reduce a leakage of magnetic flux from a magnetic domain control layer, and a thin film magnetic head which has the MR effect element. The MR effect element has a pair of magnetic domain control layer, each of which magnetically connects a MR effect multilayered structure, and an additional york layer. Each end of the additional york layer is respectively connected with a magnetic domain control layer, and the additional york layer leads magnetic flux from one magnetic domain control layer to another magnetic domain control layer.

Abstract: The present invention relates to a family of resettable circuit interrupting devices that eliminates the need to rewire a resettable circuit interrupting device after it is installed and powered up to correct for a reverse wiring conditions.

Abstract: An electronic circuit configuration for connecting an active rotary speed sensor.

Abstract: Integrated snubber device on a semiconductor basis for wiring an electric network for absorbing electric energy from an electric energy store, of an electric network, including at least two terminals for being connected to the electric network to be wired, an electric resistor structure, and a reactance structure, which are connected between the terminals.

Abstract: A DC-DC converter includes a chip including an error amplifier and a pulse width modulator (PWM) having an input connected to an output of the error amplifier, and an inductor driven by said PWM in series with an output node (VOUT) of the converter, wherein a load current flows through the inductor. VOUT is fed back through a network including a feedback resistor (RFB) to an inverting input of the error amplifier. A circuit for sensing the load current includes a first operational amplifier, a sense resistor on the chip having resistance RSENSE coupled to an inverting input of the first amplifier; wherein a sense current related to the load current flows through the sense resistor, a dependent current source provides an output current to supply the sense current. A reference resistor is disposed on the chip having a resistance RREFERENCE which is a fixed multiple of RSENSE. A set resistor is provided having a resistance RSET.

Abstract: The invention relates to a circuit arrangement for detecting the overtemperature of a semiconductor body. The arrangement comprises at least one field effect transistor, having a parasitic diode, which is integrated in the semiconductor body, wherein the parasitic diode connects a load terminal of the field effect transistor to a bulk terminal of the semiconductor body, and comprising an evaluating unit electrically connected to the parasitic diode via the bulk terminal at the semiconductor body, which is constructed for feeding a current into the parasitic diode and evaluating a temperature-dependent voltage drop across the parasitic diode, the direction of the current fed into the diode being such that it is operated in the forward direction.

Abstract: In a protective circuit for a converter having a plurality of phases, for each phase current of the phases, a signal proportional to the respective phase current is applied to a transformer circuit that, below and in the area of a limiting frequency, functions as a low-pass filter with the limiting frequency, and above the limiting frequency, functions as a divider. The outputs of the transformer circuit are applied to a maximum generator for forming the absolute value maximum. This maximum is fed to a comparator in which the maximum is compared to a reference value.

Abstract: An apparatus, system, and method is provided including a plurality of test pins, a static dissipative layer having a plurality of openings, and a plurality of support features coupled to the static dissipative layer to movably support the static dissipative layer at a first and a second relative position. The support features enable the static dissipative layer to make initial contact with terminals of a component to be tested to discharge static, if any, built up at the terminals of the component while the static dissipative layer is supported at the first relative position. The support features also enable the static dissipative layer to expose the test pins through the openings to make contact with the terminals of the component after the static dissipative layer had made initial contact with the terminals of the component at the first relative position.