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3395 results about "Photo irradiation" patented technology
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Calibration method of UV sensor for UV curing
ActiveUS8466411B2Reduce exposureEliminate errorsSemiconductor/solid-state device testing/measurementSemiconductor/solid-state device manufacturingUV curingUltraviolet
A method for managing UV irradiation for treating substrates in the course of treating multiple substrates consecutively with UV light, includes: exposing a first UV sensor to the UV light at first intervals to measure illumination intensity of the UV light so as to adjust the illumination intensity to a desired level based on the measured illumination intensity; and exposing a second UV sensor to the UV light at second intervals to measure illumination intensity of the UV light so as to calibrate the first UV sensor by equalizing the illumination intensity measured by the first UV sensor substantially with the illumination intensity measured by the second UV sensor, wherein each second interval is longer than each first interval.
Owner:ASM JAPAN
Electro-optic window incorporating a discrete photovoltaic device and apparatus for making same
InactiveUS6045643ALimited amountSimple designStatic indicating devicesWelding/cutting auxillary devicesElectricityResistor
An electro-optic window is provided which is powered solely by at least one discrete photovoltaic cell within an electro-optic window. The electro-optic window has front and back spaced-apart glass elements sealably bonded together in a spaced-apart relationship and defining a chamber filled with an electro-optic material. The front glass element has a transparent conductive layer on the face of the front glass element confronting the rear glass element and the rear glass element has a transparent conductive layer on the face confronting the front glass element. The seal is generally disposed along the perimeter of three edges of both glass elements and some distance in from the remaining (fourth) edge. The photovoltaic assembly is electrically connected to the two transparent conductive layers and is placed on the outer perimeter along this fourth edge with the photon-absorbing side of all the photovoltaic cells within the photovoltaic assembly facing in one direction ("out" the window). When light impinges on the photovoltaic cell a current is created which darkens the electro-optic material in proportion to the amount of impinging light. By choosing the relative area of the photovoltaic assembly to produce the correct current for the electro-optically active window area, the darkening of the electro-optic portion can be directly and accurately controlled without the need for any circuit, wires or shorting resistors. In addition, an apparatus for making an electro-optic window having two members capable of securing and holding two glass elements in a spaced-apart and parallel relationship is provided. The glass elements may be secured by vacuum-applying members or simple clips. The glass elements may be held in a spaced-apart and parallel relationship by a hydraulic mechanism or by simple spacers placed between the securing members.
Owner:GENTEX CORP
Method and Apparatus for Producing Three- Dimensional Objects
InactiveUS20180243976A1Inhibition of polymerizationAdditive manufacturing apparatus3D object support structuresEngineeringLength wave
A method of forming a three-dimensional object is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, (c) irradiating the build region with light through the optically transparent member and also advancing the carrier away from the build surface to form a three-dimensional solidified polymer object from the polymerizable liquid. The irradiating is carried out with both: (i) an excitation light at a first wavelength that polymerizes the polymerizable liquid, and (ii) a depletion light at a second wavelength, different from the first wavelength, that inhibits the polymerization of the polymerizable liquid. At least one of the excitation and depletion lights is temporally and/or spatially modulated to form the three-dimensional object.
Owner:CARBON INC
Measurement system and method for use in determining the patient's condition
InactiveUS20070112273A1Improve transmission qualityEasy constructionOtoscopesSurgeryData controlPhoto irradiation
A measurement system and method are presented for use in detecting a predetermined condition of a patient's ear indicative of a certain disease such as SOM and SOM. The system comprises an optical measuring unit and a control unit connectable to the output of the measuring unit. The optical measuring unit is configured and operable for irradiating a region of interest in a patient's ear with incident light including at least two different wavelengths, detecting light responses of the region of interest to said at least two different wavelengths, and producing measured data indicative thereof. The at least two different wavelengths are selected such that the light response of the region of interest to at least one first wavelength is substantially independent of said predetermined condition and the light response to at least one second wavelength is affected by said predetermined condition. The control unit is operable for receiving and processing the measured data to generate output data indicative of the measurement results. The control unit is configured and operable for controlling operation of the optical measuring unit, and for receiving the measured data and processing it to generate output data indicative of whether or not said predetermined condition exists. The control unit comprises a memory utility for storing predetermined reference data indicative of the light response of the region of interest while in a healthy condition of a patient's ear; a data processing and analyzing utility preprogrammed for processing and analyzing the measured data by determining a relation between the measured light responses and the corresponding reference data.
Owner:CHAMELEON MEDICAL INNOVATION
OCT probe for eliminating ghost images
InactiveUS7805034B2Reduce the overall diameterIncrease the working distanceMaterial analysis by optical meansCatheterPhoto irradiationMedicine
An OCT probe has a sheath to be inserted into a subject; and an optical system within the sheath, for changing the direction of light which propagates from a light source through an optical fiber to irradiate the light onto the subject through a transparent portion of the sheath, and for reflecting the light beam, which is reflected by the subject, to guide the light into the optical fiber. A light output surface, for causing the light to be output from the reflecting surface in a direction obliquely inclined with respect to the inner surface of the sheath, and a reflected light sheath entrance preventing portion, for preventing light reflected by the inner surface of the sheath from entering the optical fiber, are provided in the optical system. The reflected light sheath entrance preventing portion may be formed by providing a cut planar surface portion on the lens.
Owner:NAMIKI PRECISION JEWEL CO LTD
Display panel and production method thereof
ActiveUS20120287026A1Improve deteriorationReduced Surface Flatness RequirementsLamination ancillary operationsStatic indicating devicesPhoto irradiationHermetic seal
A display panel includes: a first substrate; light-emitting elements on a region of the first substrate; a second substrate facing the first substrate with the light-emitting elements therebetween; a glass frit between the first substrate and the second substrate so as to surround the region of the first substrate in which the light-emitting elements are disposed, the glass frit providing a hermetic seal between the first substrate and the second substrate; and a light-shielding part formed on one of the first substrate and the second substrate so as to extend along the glass frit, the light-shielding part shielding light. The light-shielding part has a lower light-shielding property in a region corresponding to the outer region of the glass frit than in a region corresponding to the inner region of the glass frit. The glass frit has been irradiated with light through the light-shielding part.
Owner:JOLED INC
Package Design for Producing White Light With Short-Wavelength Leds and Down-Conversion Materials
A broad bandwidth light source including: a solid state light emitting device that generates short wavelength light; and quantum dot material and phosphor material that are each irradiated by some of the short wavelength light. The short wavelength light has a spectrum with a first peak wavelength shorter than about 500 nm. The quantum dot material absorbs some of the short wavelength light and reemits it as long wavelength light having a spectrum with a second peak wavelength longer than about 600 nm. The phosphor material absorbs some of the short wavelength light and reemits it as mid wavelength light having a spectrum with a peak wavelength between the first and second peak wavelength. The light source is configured such that some of each light (short, mid, and long wavelength) is emitted coincidently as a light having a chromaticity value near the blackbody locus and a color rendering index greater than 80.
Owner:RENESSELAER POLYTECHNIC INST
Pulsed laser linescanner for a backscatter absorption gas imaging system
InactiveUS6690472B2Enhanced signalMaximize attenuationScattering properties measurementsColor/spectral properties measurementsMobile vehicleFluence
An active (laser-illuminated) imaging system is described that is suitable for use in backscatter absorption gas imaging (BAGI). A BAGI imager operates by imaging a scene as it is illuminated with radiation that is absorbed by the gas to be detected. Gases become "visible" in the image when they attenuate the illumination creating a shadow in the image. This disclosure describes a BAGI imager that operates in a linescanned manner using a high repetition rate pulsed laser as its illumination source. The format of this system allows differential imaging, in which the scene is illuminated with light at least 2 wavelengths-one or more absorbed by the gas and one or more not absorbed. The system is designed to accomplish imaging in a manner that is insensitive to motion of the camera, so that it can be held in the hand of an operator or operated from a moving vehicle.
Owner:SANDIA NAT LAB
Methods of producing polyurethane three-dimensional objects from materials having multiple mechanisms of hardening
ActiveUS20160137838A1Increased formationEnhance or speed the refilling of the build regionManufacturing enclosuresOptical articlesEndcappingPolymer science
A method of forming a three-dimensional object of polyurethane, polyurea, or copolymer thereof is carried out by: (a) providing a carrier and an optically transparent member having a build surface, the carrier and the build surface defining a build region therebetween; (b) filling the build region with a polymerizable liquid, the polymerizable liquid including at least one of: (i) a blocked or reactive blocked prepolymer, (ii) a blocked or reactive blocked diisocyanate, or (iii) a blocked or reactive blocked diisocyanate chain extender; (c) irradiating the build region with light through the optically transparent member to form a solid blocked polymer scaffold and advancing the carrier away from the build surface to form a three-dimensional intermediate having the same shape as, or a shape to be imparted to, the three-dimensional object, with the intermediate containing the chain extender; and then (d) heating or microwave irradiating the three-dimensional intermediate sufficiently to form from the three-dimensional intermediate the three-dimensional object of polyurethane, polyurea, or copolymer thereof.
Owner:CARBON INC
Process for detecting leaks in sealed packages
InactiveUS20060121613A1Chemiluminescene/bioluminescenceSynthetic resin layered productsLength waveChemistry
The present invention relates to a process for detecting a leak in a package. The process comprises preparing a package by covering at least a portion of an O2-sensitive product with a multilayer film comprising (i) a leak-indicator layer in which a O2-sensitive indicator is present throughout the leak-indicator layer; and (ii) an O2-barrier layer outward of the leak-indicator layer. A low O2-environment is provided within the package. The leak-indicator layer is then illuminated with light containing a wavelength absorbed by the O2-sensitive indicator, so that the O2-sensitive indicator produces an emission of radiation in an amount inversely proportional to a level of O2 present with the O2-sensitive indicator. Then the multilayer film is scanned while the O2-sensitive indicator is emitting radiation, the scanning being carried out by sensing and comparing the amount of radiation emitted from at least two different regions of the multilayer film.
Owner:CRYOVAC ILLC
Hologram recording method and hologram recording material
InactiveUS7588863B2High sensitivityHigh diffraction efficiencyPolyhalogenated compound compositionsPhotomechanical apparatusLatent imageCOLORED MATERIAL
To provide a hologram recording method capable of satisfying high sensitivity and at the same time, satisfying high diffraction efficiency, good preservability, low shrinkage percentage, dry processing and multiplex recording properties, a hologram recording method comprises a first step of producing a latent image upon holographic exposure, and a second step of causing a polymerization reaction due to the latent image, to form a interference fringe providing a refractive index modulation, wherein the first and second steps are dry process; particularly, the first step is a step of producing a colored material to form the latent image and the second step is a step of causing the polymerization reaction upon irradiating the colored material with a light having a wavelength different from that of the holographic exposure, to form the interference fringe providing the refractive index modulation.
Owner:FUJIFILM CORP +1
Light emission structure for indication symbol in interior space of vehicle
ActiveUS9616812B2Easy to addAvoid emissionsUV light devicesDashboard lighting devicesInterior spaceUltraviolet lights
An interior space of an automobile includes a maplamp unit and a plurality of functional units. The maplamp unit is provided on a ceiling of the interior space and is adapted to emit an ultraviolet light therefrom toward and upon a predetermined area of irradiation by the ultraviolet light. The functional units are spaced from each other and yet provided such that they all reside within the irradiation area. The functional units may include a combination meter, a navigation device, an air conditioner operating area, a power window switch area, and a small article placing area. These functional units each include at least one luminescent symbol. The luminescent symbol is adapted to become luminous when irradiated by the ultraviolet light emitted by the maplamp unit.
Owner:YAZAKI CORP
Method and device for monitoring oil oxidation in real time by measuring fluorescence
There is provided a method and a device of monitoring oil oxidation in real time. The method of the present invention comprises the steps of: irradiating ultraviolet light into oil to be monitored; measuring fluorescence emission intensity of the oil in red, green and blue wavelength bands; determining one value measured in a relatively long wavelength band and the other value measured in a relatively short wavelength band among the fluorescence emission intensity measured in the red, green and blue wavelength bands; calculating a fluorescence emission ratio which is defined as a ratio of the value measured in the relatively long wavelength band to the value measured in the relatively short wavelength band; and monitoring a change in the fluorescence emission ratio. It is then determined whether the fluorescence emission ratio reaches a predetermined critical magnitude. When the fluorescence emission ratio reaches the critical magnitude, the necessity of replacing the oil with new one is indicated.
Owner:KOREA INST OF SCI & TECH
Fluid purification and disinfection device
InactiveUS20030209501A1Easy to purifyIncrease total effective contact surface areaWater/sewage treatment by irradiationWater treatment compoundsPollutantTitanium dioxide
The present invention discloses a fluid purification and disinfection system, which includes a housing, an ultraviolet lamp and a photocatalytic oxidation device. Said housing therein is an enclosed case that is fitted with an inlet and an outlet. Furthermore, said ultraviolet lamp is mounted inside the housing. Said photocatalytic oxidation device is a disinfection core coated with photocatalyst. Said disinfection core is installed around said ultraviolet lamp, and is fixed onto said housing. Said photocatalyst therein is titanium dioxide. The working principle of the fluid purification and disinfection device in accordance with the present invention is to utilize ultraviolet light to irradiate the titanium dioxide-coated surface of the photocatalytic oxidation device to generate the photocatalytic oxidation process. As a result, Escherichia coli, Vibriocholerae and pathogenic organisms that contact the surface of photocatalytic oxidation device can be quickly killed, and contaminants in the fluid can be eliminated. By this way, water or fluid that flows through said disinfection device is disinfected and purified.
Owner:ENVIRONMENTALCARE
Photoplethysmography device and method
InactiveUS20110082355A1Accurate descriptionDiagnostic recording/measuringSensorsAnalytePulse parameter
A system and method for measuring one or more light-absorption related blood analyte concentration parameters of a mammalian subject, is disclosed. In some embodiments, the system comprises: a) a photoplethysmography (PPG) device configured to effect a PPG measurement by illuminating skin of the subject with at least two distinct wavelengths of light and determining relative absorbance at each of the wavelengths; b) a dynamic light scattering measurement (DLS) device configured to effect a DLS measurement of the subject to rheologically measure a pulse parameter of the subject; and c) electronic circuitry configured to: i) temporally correlating the results of the PPG and DLS measurements; and ii) accordance with the temporal correlation between the PPG and DLS measurements, assessing value(s) of the one or more light-absorption related blood analyte concentration parameter(s).
Owner:OXITONE MEDICAL
Light Activated Shape Memory Co-Polymers
The present discovery uses monomers which contain reversible photo-crosslinkable groups in addition to primary polymerizable groups. The mechanical properties of these materials and the reversibility of the photo-activated shape memory effect demonstrate the effectiveness of using photo-irradiation to effect change in modulus and shape memory effect. In the preferred embodiment the reaction mixture includes a photo-reactive monomer comprising a photo reactive group and a polymerizable group; a second monomer, which is more preferably a mixture of monomers, which are acrylate based; a multi-functional crosslinking agent, preferably 1,6 hexanediol diacrylate (HDODA); an initiator, preferably a free radical initiator; and a fifth, optional, component which is a modifying polymer. The mixture of the second monomer, crosslinking agent, and initiator comprise the base polymer matrix into which the photo-reactive monomer is incorporated. The polymeriziable group of the photo reactive monomer allows the photo reactive monomer to polymerize with the base polymer matrix.
Owner:CORNERSTONE RES GROUP
Photo-induced reversible self-repair polyurethane film and repair method
The invention relates to a photo-induced reversible self-repair polyurethane film and a preparation method and a repair method thereof. The polyurethane film mainly comprises 10 to 40 parts of phenolic hydroxyl coumarin derivative, 10 to 50 parts of alkyl bromal compound, 10 to 40 parts of polyisocyanate, and 10 to 30 parts of polyether polyol or polyester polyol. The preparation method comprises the following steps of: generating phenolic hydroxyl coumarin by using the phenolic hydroxyl coumarin derivative and the alkyl bromal compound under the action of absolute potassium carbonate; and reacting the phenolic hydroxyl coumarin, the polyisocyanate and the polyether polyol or the polyester polyol to obtain polyurethane solution, and performing cross linking under the irradiation of ultraviolet with wavelength of 350 nanometers after the film is formed to obtain the polyurethane film. The damaged surface is irradiated through the ultraviolet with wavelength of 254 to 350 nanometers, so that the reduced coumarin monomers are subjected to dimer cross linking reaction again and the purpose of repairing cracks is fulfilled. Compared with the prior art, the polyurethane film has the characteristics of good film forming property and high transparency; and the repair process is simple and has low cost.
Owner:SUN YAT SEN UNIV
Image Forming Method and Ink-Jet Recording Device Utilizing Photo-Curable Ink, and Inkset, Ink-Jet Recording Method and Ink-Jet Recording Device Utilizing Photo-Curable Ink
ActiveUS20080055379A1No deterioration of curing capabilityIncrease chanceMeasurement apparatus componentsInksLight irradiationEngineering
An ink-jet recording device which is equipped with a recording head to eject one type or plural types of inks containing a photo-curable component onto a recording medium and a light irradiation device to cure the ink by irradiating light onto the ink having deposited on the recording medium, wherein ink quantity cured by one time light irradiation is not less than 5 g / m2, and an amount of a photo-polymerization initiator in the ink is not more than 5 weight % based on the total weight of the ink.
Owner:KONICA MINOLTA MEDICAL & GRAPHICS INC
Reflection type liquid crystal display device and manufacturing method thereof
InactiveUS20020140886A1Improve reflectivityIncrease contrastSemiconductor/solid-state device manufacturingNon-linear opticsLiquid-crystal displayThermal deformation
The present invention is a method of manufacturing a liquid crystal display device, wherein light having an exposure energy is irradiated on the surface of a photo-sensitive resin layer having a predetermined film thickness, and a distribution of thermal deformation characteristics in the thickness direction (or the plane direction) of the photo-sensitive resin layer is formed, then heat treatment is performed to form random undulation (micro-grooves or micro-wrinkles) on the surface of the photo-sensitive resin layer.
Owner:SHARP KK
Head-mounted display
ActiveUS20140055353A1Input/output for user-computer interactionCathode-ray tube indicatorsPhoto irradiationDisplay device
A mounting section (2) for a user to mount on his/her head includes an infrared light irradiation section (5) that irradiates an object to be detected (21) with a predetermined pattern of infrared light and an infrared light detection section (6) that detects the infrared light reflected by the object to be detected (21). The infrared light irradiation section (5) and the infrared light detection section (6) are placed at a predetermined distance from each other. The three-dimensional coordinates of the object to be detected (21) are computed from a predetermined pattern of reflection from the object to be detected (21) as obtained by the infrared light detection section (6).
Owner:SHARP KK
Liquid ink and recording apparatus
InactiveUS6959986B2Quality improvementMeasurement apparatus componentsDuplicating/marking methodsPolymer sciencePhoto irradiation
There is disclosed a liquid ink including a photo acid generating agent that generates an acid upon irradiation with light, a coloring component, and at least one kind of a solvent that is polymerized in the presence of an acid. It is preferable that the amount of the photo acid generating agent contained in the liquid ink falls within a range of between 1 part by weight and 10 parts by weight relative to 100 parts by weight of the solvent, the coloring component consists of a pigment, and the solvent contains at least 50 parts by weight of an acid polymerizable compound, the acid polymerizing compound polymerizing in the presence of the acid, having an alicyclic skeleton and / or an aliphatic skeleton having a viscosity of 50 mPa·s or less and a boiling point of 150° C. or more under room temperature and atmospheric pressure.
Owner:TOSHIBA TEC KK
Eye closure detection using structured illumination
ActiveUS8314707B2High degreeImprove reliabilityAcquiring/recognising eyesColor television detailsDriver/operatorEye closure
A monitoring system monitors and / or predicts drowsiness of a driver of a vehicle or a machine operator. A set of infrared or near infrared light sources is arranged such that an amount of the light emitted from the light source strikes an eye of the driver or operator. The light that impinges on the eye of the driver or operator forms a virtual image of the signal sources on the eye, including the sclera and / or cornea. An image sensor obtains consecutive images capturing the reflected light. Each image contains glints from at least a subset or from all of the light sources. A drowsiness index can be determined based on the extracted information of the glints of the sequence of images. The drowsiness index indicates a degree of drowsiness of the driver or operator.
Owner:TOBII TECH AB
Heating elements deposited on a substrate and related method
InactiveUS20050051536A1Overcome problemsFully curedResistor manufacture by lithographyHeating element shapesVolatile organic compoundElectrically conductive
The present invention provides a method for making a heating element adhered to a substrate by applying a photocurable composition to a flexible substrate in a pattern having one or more grid lines. The photocurable composition is curable into an electrically conductive layer and volatile organic compounds are present in an amount of less than about 10% of the total weight of the photocurable composition. After the pattern is deposited on the substrate it is cured by illuminating the photocurable composition with light for a sufficient period of time to cure the photocurable composition. In another embodiment of the invention heating elements made by the method of the invention are provided.
Owner:KLAI ENTERPRISES
Light source unit and projector
ActiveUS20120026472A1Increase brightnessImprove luminous efficiencyElectrical apparatusProjectorsLight guideLength wave
There is provided a light source unit comprising a luminescent plate having a luminescent light emission portion and a diffuse transmission portion, a first light source which emits light of a wavelength band which can excite the luminescent material, a second light source which emits light of a wavelength band which differs from the luminous light and the light emitted from the first light source, a light guiding optical system which guides light of respective wavelength bands in color emitted from the luminescent plate to a predetermined plane, and a light source control part for controlling individually the emission of light from the first light source and the second light source, wherein the luminescent plate is disposed on optical paths of the first light source and the second light source, wherein a light shining position of light from the first light source and a light shining position of light from the second light source are made to differ from each other on the luminescent plate, and wherein the light source control part controls so that the first light source and the second light source emit light simultaneously or separately to thereby emit synthesized light or monochromatic light.
Owner:CASIO COMPUTER CO LTD
Semiconductor photosensitization device, production method and application thereof
ActiveCN101707202AReduce manufacturing costHigh image resolutionTelevision system detailsSemiconductor/solid-state device manufacturingManufacturing cost reductionPixel density
The invention discloses a semiconductor photosensitization device which comprises a source electrode, a drain electrode, a control grid, a floating grate region, a substrate, and a p-n node diode for connecting a floating gate region and a drain electrode. The floating grate region of the semiconductor photosensitization device is used for storing charges, and the floating grate potential of the semiconductor photosensitization device is related to light exposure intensity and time, thus, the invention can be used as a semiconductor photosensitization device. The invention also discloses production methods of the semiconductor photosensitization device and an image sensor, as well as an image sensor formed by arrays formed by the semiconductor photosensitization device. The semiconductor photosensitization device can simplify the design of a single pixel unit in a traditional image sensor and reduce the area occupied by the single pixel unit, thereby improving the pixel density of the image sensor, increasing the resolution of the image sensor and reducing the production cost of the image sensor.
Owner:SUZHOU ORIENTAL SEMICONDUCTOR CO LTD
Photochemical therapy to affect mechanical and/or chemical properties of body tissue
ActiveUS8414911B2Low toxicityShorten the construction periodLaser surgerySenses disorderLight irradiationKeratoconus
The disclosure concerns altering the mechanical and / or chemical property of a body tissue, particularly an ocular tissue. In specific cases, it concerns altering or stabilizing the shape of the cornea, such as in a subject suffering or at risk for ectasia or keratoconus. In other specific cases, it concerns strengthening the sclera in a subject suffering or at risk for myopia. The invention employs light irradiation of a photoactivatable compound, such as one that applies crosslinking to the tissue, for example.
Owner:CALIFORNIA INST OF TECH +1
Polishing process monitoring method and apparatus, its endpoint detection method, and polishing machine using same
InactiveUS6425801B1Polishing machinesRevolution surface grinding machinesLight beamSemiconductor chip
A polishing process monitoring apparatus of a semiconductor wafer is provided, which is capable of monitoring correctly the process independent of various factors affecting optical measurement, such as the configuration, material, and size of a layered structure on the wafer, and the geometric shapes of patterns and their arrangement for respective semiconductor chips. This apparatus is comprised of (a) a light irradiating means for irradiating a detection light beam to a semiconductor wafer, (b) a first light receiving means for receiving a specular-reflected light beam generated by reflection of the detection light beam at the wafer and for outputting a first signal according to an amount of the specular-reflected light beam, (c) a second light receiving means for receiving a scattered / diffracted light beam generated by scattering or diffraction of the detection light beam at the wafer and for outputting a second signal according to an amount of the scattered / diffracted light beam, and (d) a monitoring means for monitoring a polishing process of the wafer by using the first and second signals.
Owner:NEC CORP
Thermally assisted magnetic head, head gimbal assembly, and hard disk drive
ActiveUS8077556B2Low coercivityHigh-density recordingRecord information storageMagnetic recordingHard disc drivePhoto irradiation
A thermally assisted magnetic head has a medium-facing surface facing a magnetic recording medium; a near-field light generator disposed on a light exit face in the medium-facing surface; a magnetic recording element located adjacent to the near-field light generator; and a light emitting element disposed so that emitted light thereof reaches the near-field light generator; the near-field light generator is comprised of a cusp portion and a base portion; when λin represents a wavelength of the emitted light from the light emitting element immediately before the emitted light reaches the near-field light generator, an intensity of near-field light generated when the material forming the cusp portion is irradiated with the light of the wavelength λin is stronger than an intensity of near-field light generated when the material forming the base portion is irradiated with the light of the wavelength λin.
Owner:TDK CORPARATION
Printing a mask with maximum possible process window through adjustment of the source distribution
InactiveUS7057709B2Reduce lossesSemiconductor/solid-state device manufacturingUsing optical meansLight beamComputational physics
A lithographic mask is illuminated with light from different directions such that intensities of a plurality of incident beams of light provide a largest possible integrated process window defined in terms of an allowed range for defining shapes. Constrained sets of intensity parameters are imposed. A first set of intensity parameters represents maximum possible intensities that can be permitted for overexposed tolerance positions. A second set of intensity parameters represents minimum possible intensities that can be permitted for underexposed tolerance positions. Optimum source intensities of incident beams are defined using a linear program and constraints. The optimum source intensities maximize an integrated range of dose and focal variations without causing printed shapes to depart from the allowed range. Apparatus are detailed and variations are described.
Owner:GLOBALFOUNDRIES INC
Multiphoton photosensitization system
InactiveUS20050054744A1Efficiently formedHigh sensitivityPhotosensitive materialsPhotomechanical exposure apparatusChemical reactionPhotoinitiator
A method of multiphoton photosensitizing a photoreactive composition comprises irradiating the composition with light sufficient to cause simultaneous absorption of at least two photons, thereby inducing at least one acid- or radical-initiated chemical reaction where the composition is exposed to the light. The composition comprises: (a) at least one reactive species that is capable of undergoing such reaction; and (b) at least one multi-component, multiphoton photoinitiator system.
Owner:3M INNOVATIVE PROPERTIES CO
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