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Radiation patents

      

This page is updated frequently with new Radiation-related patent applications.




 Wearable image pickup apparatus patent thumbnailWearable image pickup apparatus
According to one embodiment, a wearable image pickup apparatus includes a mounting unit mounted on a user, and an image pickup unit arranged on the mounting unit. The image pickup unit includes a fixed portion fixed to the mounting unit, and a movable portion movably coupled to the fixed portion by a coupling mechanism.
Kabushiki Kaisha Toshiba


 Recovering a rare-earth-doped optical fiber under irradiation patent thumbnailRecovering a rare-earth-doped optical fiber under irradiation
An optical fiber apparatus and a method of recovering radiation-induced-attenuation (ria) onto a rare-earth-doped optical fiber under irradiation are provided in this disclosure. A light source is coupled to a rare-earth doped optical fiber.
National Applied Research Laboratories


 Method of manufacturing secondary battery patent thumbnailMethod of manufacturing secondary battery
A method of manufacturing a secondary battery is provided. According to the manufacturing method, laser light includes first peak light applied to a first irradiation position located on a cover body, second peak light applied to a second irradiation position located between the first irradiation position and a connecting surface, and third peak light applied to the connecting surface.
Toyota Jidosha Kabushiki Kaisha


 Method of manufacturing semiconductor device patent thumbnailMethod of manufacturing semiconductor device
A manufacturing method includes an implantation of impurities and laser irradiation. In the implantation, impurities are implanted to first and second areas so as to obtain a relationship that a total amount of the first impurities is larger than a total amount of the second impurities in a first depth range and a total amount of the second impurities is larger than a total amount of the first impurities in a second depth range (deeper range).
Toyota Jidosha Kabushiki Kaisha


 Mass spectrometer patent thumbnailMass spectrometer
A mass spectrometer includes a beam radiator radiating a beam to a sample. A laser radiator radiates laser light onto an irradiation surface of a surface of the sample irradiated with the beam or above the irradiation surface.
Kabushiki Kaisha Toshiba


 Multi charged particle beam writing method, and multi charged particle beam writing apparatus patent thumbnailMulti charged particle beam writing method, and multi charged particle beam writing apparatus
A multi charged particle beam writing method includes assigning, for each unit irradiation region per beam of multi-beams, each divided shot obtained by dividing a shot of a maximum irradiation time and continuously irradiate the same unit irradiation region, to at least one of a plurality of beams that can be switched by collective deflection; calculating, for each unit irradiation region, an irradiation time; determining, for each unit irradiation region, whether to make each divided shot be beam “on” or “off” so that the total irradiation time for a plurality of corresponding divided shots to be beam “on” may become a combination equivalent to the irradiation time calculated; and applying, to the corresponding unit irradiation region, the plurality of corresponding divided shots to be beam “on”, using the plurality of beams while switching a beam between beams by collective deflection.. .
Nuflare Technology, Inc.


 Electron beam irradiation device patent thumbnailElectron beam irradiation device
An electron beam irradiation device includes a stage, a main body unit, and a first mechanism. The main body unit includes a substrate, first members, and a first layer.
Kabushiki Kaisha Toshiba


 Ion beam device patent thumbnailIon beam device
An ion beam device according to the present invention includes a gas field ion source including an emitter tip supported by an emitter base mount, a ionization chamber including an extraction electrode and being configured to surround the emitter tip, and a gas supply tube. A center axis line of the extraction electrode overlaps or is parallel to a center axis line of the ion irradiation light system, and a center axis line passing the emitter tip and the emitter base mount is inclinable with respect to a center axis line of the ionization chamber.
Hitachi High-technologies Corporation


 Radiation shield apron with improved gonadal protection patent thumbnailRadiation shield apron with improved gonadal protection
A protective garment comprising gonadal-abdominal protective section attached to a shield apron, the gonadal-abdominal protective section comprising front cover sheet, back cover sheet, one or more inner sheets of flexible radiation shielding material arranged between the front cover sheet and the back cover sheet, and an upper edge attached to a bottom portion of the shield apron.. .

 Method for improving resistance of fusion reactor inner wall to plasma irradiation by using lamination structure patent thumbnailMethod for improving resistance of fusion reactor inner wall to plasma irradiation by using lamination structure
A method for improving resistance of a fusion reactor inner wall to plasma irradiation by using lamination structure comprises: making a material for facing plasma into multiple metal sheets, laminating the multiple metal sheets together according to a direction perpendicular to a wall surface, and combining the laminated multiple metal sheets with a copper substrate. The method relates to the field of nuclear applications, and is applicable to a plasma-facing surface on an inner wall of an apparatus for conducting a fusion reaction by using hydrogen isotopes.
Beijing University Of Technology


Pixel, organic light emitting display device including the pixel, and driving the pixel

A display device includes a first pixel including a first light emitter, a second pixel including a second light emitter, and a holding capacitor connected to the first and second pixels. The holding capacitor stores first data for the first light emitter and stores second data for the second light emitter at different times.
Samsung Display Co., Ltd.

Defect imaging apparatus, defect detection system having the same, and detecting defects using the same

The defect imaging apparatus including a chamber having a stage to which a substrate having at least one process defect and at least one reference defects defined at a given area is secured, a position controller configured to obtain an imaging error from a detected actual position and a conversion position of the reference defect and correct a conversion position of the process defect by the imaging error, and generate an irradiation position corresponding to an actual position of the process defect, an image signal generator configured to generate an image signal of the process defect by irradiating an electron beam to the irradiation position and detecting charged particles from the irradiation position in response to the irradiated electron beam, and an imaging device configured to generate a defect image of the process defect by processing the generated image signal may be provided.. .
Samsung Electronics Co., Ltd.

Image forming apparatus and control same

An image forming apparatus includes a photoconductor on which an electrostatic latent image is formed by irradiation of the photoconductor with light, a charger, a developing device, a transfer device, a charge removal execution determiner, and a power supply controller. The charger receives a superimposed voltage of a dc voltage and an ac voltage to charge the photoconductor.

Image forming apparatus

The length of a developer bearing portion of a developing device is longer than the length of a transfer roller in the rotation axis direction of a photosensitive drum. The width of a light irradiation opening of a charge eliminating device is shorter than the length of the transfer roller in the rotation axis direction of the photosensitive drum..
Canon Kabushiki Kaisha

Pattern data generation method, pattern data generation device, and mask

A pattern data generation method includes setting drawing pattern data based on design pattern data including first and second pattern regions. The drawing pattern data includes third and fourth pattern regions.
Kabushiki Kaisha Toshiba

Pattern forming method, resist pattern, manufacturing electronic device, and electronic device

A pattern forming method includes, in this order, forming a film on a substrate, using an active-light-sensitive or radiation-sensitive resin composition containing a resin (a) which has a repeating unit having a phenolic hydroxyl group, and a repeating unit having a group that decomposes by the action of an acid to generate a carboxyl group, and a compound (b) that generates an acid upon irradiation with active light or radiation; exposing the film; and developing the exposed film using a developer including an organic solvent, in which the developer including an organic solvent contains an organic solvent having 8 or more carbon atoms and 2 or less heteroatoms in the amount of 50% by mass or more.. .
Fujifilm Corporation

Defect inspection method and defect inspection device

A defect inspection method according to an embodiment includes irradiating an euv mask having a substrate, a first line-shaped portion, and a second line-shaped portion with deep ultraviolet radiation from a lower surface side of the substrate, and detecting reflection light of the deep ultraviolet radiation. The first line-shaped portion and the second line-shaped portion are provided on the substrate.
Kabushiki Kaisha Toshiba

Illumination device and bio-information measurement device having the same

According to one embodiment, the illumination device includes a lighting unit and a control unit. The lighting unit emits light at the intensity to be emitted toward the region to be irradiated in a two-dimensional region of a measurement device.
Kabushiki Kaisha Toshiba

System and measuring thermal degradation of composites

A system for measuring thermal degradation of composites, may include a housing having an interior with an opening shaped to expose a test area of the composite to be tested to the interior; a light-emitting diode that emits primarily ultraviolet radiation, the diode mounted on the housing to direct the ultraviolet radiation into the interior and through the opening; an image sensor mounted on the housing and open to the interior to receive radiation emitted from the test area passing through the opening into the interior; and an image processor connected to receive a signal from the image sensor, the image processor determining a presence or absence of thermal degradation of the test area in response to the signal.. .
The Boeing Company

Eyewear with radiation detection system

Eyewear having radiation monitoring capability is disclosed. Radiation, such as ultraviolet (uv) radiation, infrared (ir) radiation or light, can be measured by a detector.
Ingeniospec, Llc

Chemical liquid tank

A chemical liquid tank has a container to store chemical liquid, a sensor to measure a height of a liquid surface by irradiating the chemical liquid stored in the container with an ultrasonic wave and measuring time until a reflected wave reflected from the liquid surface of the chemical liquid is received, and a gas jetting port to spray a gas toward a part of the liquid surface comprising an irradiation position of the ultrasonic wave in the container.. .
Kabushiki Kaisha Toshiba

Lighting apparatus

A lighting apparatus includes a light source unit having a light source portion configured to mount a light source thereon, and a light distribution angle adjusting means coupled to the light source portion and configured to change an irradiation range of the light source. The light distribution angle adjusting means includes a reflector provided with a spiral guide portion in a peripheral surface thereof and configured to reflect a light emitted from the light source, a movable body having an engaging portion configured to slidably engage the guide portion and a control portion configured to limit a direction of a movement to a rotation axis direction of the reflector, a support configured to support a movement of the movable body in the rotation axis direction of the reflector, and an optical component secured to the movable body and configured to change a light path of the light..
Minebea Co., Ltd.

Processing facility for manufacturing integrated circuits from semiconductor wafers as well as perforated panel for a processing facility

A processing facility for manufacturing integrated circuits on semiconductor wafers is provided with at least one radiation generator that generates an euv (extreme ultraviolet) radiation that is supplied to at least one lithography machine, housed in a factory building, for exposure of the semiconductor wafers. The radiation generator is housed in a building or a building section separate from the factory building.
M+w Group Gmbh

Ultraviolet radiation protection of composite panel and making and using the same

A number of variations may include a product including a composite panel comprising a substrate comprising a fiber weave, and a first layer overlying the substrate comprising silicone wherein the composite panel is constructed and arranged to resist ultraviolet radiation.. .
Gm Global Technology Operations Llc

Recovery of metals from ores

A process includes at least formulating an aqueous oxidizing solution by addition of ingredients to water, wherein the aqueous oxidizing solution has a ph of less than 0.7 primarily from at least one strong acid, at between 0.04% and 0.42% weight/volume of persulphate anions, and 0.03% to 0.1% weight/volume of hydrogen peroxide; an irradiation step wherein ozone is produced by irradiating oxygen with an ultraviolet source wherein the ozone is present in the solution at a concentration of 0.75 to 2 mg/l ozone; a metal solubilization step of oxidizing and thereby rendering soluble a desired at least one metal from a ground amount of ore in suspension; collecting a pregnant liquor from the suspension; and selectively removing at least a portion of the at least one metal from the liquor while at a ph of less than 3, such that any remaining liquid is a recyclable liquor.. .
Novel Mining Limited

Methods of selective cell attachment/detachment, cell patternization and cell harvesting by means of near infrared rays

The present invention relates to a method for selective cell attachment/detachment, cell patternization and cell harvesting by means of near infrared rays. More particularly, conducting polymers or metal oxides having exothermic characteristics upon irradiation of near infrared light is used as a cell culture scaffold, thus selectively attaching/detaching cells without an enzyme treatment.
Industry-academic Cooperation Foundation, Yonsei University

Light induced free radical and/or cationic photopolymerization method

The present invention relates to a new method of light induced photopolymerization under mild irradiation conditions, copper initiator complexes to be used in such method and a polymers obtained by such method.. .
Université D'aix-marseille

Cryogenic hydrogen radiation shield for human spaceflight

The disclosed subject matter relates to a radiation shielding apparatus including a cryogenic vessel and a cryogenic hydrogen radiation shielding material capable of providing a radiation shield, the cryogenic hydrogen radiation shielding material including cryogenic hydrogen.. .
U.s.a. As Represented By The Administrator Of The National Aeronautics And Space Administration

Inkjet printing apparatus and inkjet printing method

There is provided an inkjet printing apparatus and an inkjet printing method that may obtain a printed matter that excels in glossiness. An inkjet printing apparatus 1 has an irradiation controller 20.
Mimaki Engineering Co., Ltd.

Inkjet printing apparatus

There is provided an inkjet printing apparatus that performs printing operation on a recording medium with a satisfactory image quality. An inkjet printing apparatus includes a head that reciprocates in a main scanning direction while discharging an ink onto the medium; and a left irradiator and a right irradiator having a plurality of irradiation elements that are configured to irradiate the ink with light and are mounted on one substrate, the plurality of irradiation elements being arranged in a sub scanning direction, and an array pitch of the plurality of irradiation elements is n/m (m≧1), where a maximum pass width in the plurality of passes is n..
Mimaki Engineering Co., Ltd.

Nozzle for selectively generating either plasma or ultraviolet radiation

One aspect of the invention provides a method of generating ultraviolet radiation. The method includes: introducing a mixture of nitrogen gas and helium gas into a dielectric barrier discharge device including a high voltage electrode and a ground electrode separated by a gap and a dielectric; and applying suitable electricity to the high voltage electrode, thereby generating ultraviolet radiation.
Drexel University

Manufacturing an electrode with a separator layer and manufacturing an electrode with a separator layer

A manufacturing method and a manufacturing apparatus for a separator layer-coated electrode are provided capable of shortening the time required to cut out a separator layer-coated electrode with a laser beam. In a cutting process, a laser beam is irradiated to a laser irradiation target portion of a strip-shaped separator layer-coated electrode from a front-side separator layer side to cut a strip-shaped separator layer-coated electrode.
Toyota Jidosha Kabushiki Kaisha

Method for manufacturing three-dimensional shaped object

There is provided a selective laser sintering method capable of reducing the bulge of the peripheral portion corresponding to the periphery of the three-dimensional shaped object. The manufacturing method according to an embodiment of the present invention includes alternate repetition of a powder-layer forming and a solidified-layer forming, the repetition comprising: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby sintering the powder in the predetermined portion or a melting and subsequently solidifying the powder; and (ii) forming another solidified layer by newly forming a powder layer on the formed solidified layer, followed by irradiation of a predetermined portion of the newly formed powder layer with the light beam, wherein a scanning of the light irradiation is divided into light beam-scannings “a” and “b”..
Panasonic Intellectual Property Management Co., Ltd.

Knowledge-based spatial dose metrics and methods to generate beam orientations in radiotherapy

A system for estimating a dose from a radiation therapy plan includes a memory that stores machine-readable instructions and a processor communicatively coupled to the memory, the processor operable to execute the instructions to subdivide a representation of a volume of interest into voxels. The processor also determines distances between a planned radiation field origin and each respective voxel.
Varian Medical Systems, Inc.

Irradiation device

An irradiation device for insertion into an orifice of the body for providing photodynamic therapy or diagnosis comprises: a housing 1, 21, 31, 51, 61, 71 adapted to be fully inserted and secured in the orifice, the housing 1, 21, 31, 51, 61, 71 enclosing an led lamp system 5, 25, 35, 45, 54, 62, 72 and a power source 41, 68, 78, for powering the led lamp system 5, 25, 35, 45, 54, 62, 72, wherein the device is independently operational while located within the orifice.. .
Photocure Asa

Pharmaceutical composition

This invention relates to pharmaceutical compositions for oral administration to treat, for example, acute radiation sickness, wherein the composition comprises, for example, a first agent which is selected from the group consisting of beta-carotene, and pharmaceutically acceptable derivatives thereof; a therapeutically effective amount of a second agent which is selected from the group consisting of cholic acid, derivatives thereof, and pharmaceutically acceptable salts thereof, and at least one pharmaceutically acceptable excipient.. .

Pyrrolidine- substituted flavone derivatives for prevention or treatment of oral mucositis

The present invention relates to the pyrrolidine substituted with flavone derivatives, represented by the compounds of formula (i) (as described herein) or pharmaceutically acceptable salts, solvates, stereoisomers or diastereoisomers thereof or pharmaceutical compositions containing the compounds of formula (i) for use in the prevention and/or treatment of oral mucositis caused by cancer therapy such as radiation therapy.. .
Piramal Enterprises Limited

Medical imaging system capable of preventing unintended x-ray radiation to an object

A medical imaging system having an x-ray image acquisition device, a plurality of proximity sensors located at components of the x-ray image acquisition device and a processing unit is able to prevent unintended x-ray radiation to an object in a field of irradiation. For this purpose, the processing unit is configured for determining temporal differences of distance information delivered by the proximity sensors, for generating reference distance information based on acquired distance information with an x-ray source, an x-ray detector and the patient support in fixed positions, for filtering out reference distance information from the acquired distance information and for generating a signal in case temporal differences are determined exceeding a predetermined threshold..
Koninklijke Philips N.v.

Optical scanning observation apparatus and optical scanning observation method

An optical scanning endoscope apparatus includes an optical fiber for illumination, a driver that drives the tip of the optical fiber for illumination in a lissajous scan pattern, illumination lenses that irradiate an object of observation with irradiation light emitted from the tip of the fiber, a photodetector that detects light obtained from the object of observation by irradiation with the irradiation light and converts the light to an electrical signal, an image processor that generates an image based on the electrical signal output by the photodetector, and a phase adjustor that adjusts the phase of the drive waveform of the driver so as to correct a phase shift between the drive waveform of the tip of the fiber by the driver and the vibration waveform of the tip of the fiber.. .
Olympus Corporation

Height adjustable desks with ultraviolet light irradiation of keyboard tray

Height adjustable desks with a keyboard tray system that is irradiated by an ultraviolet light disinfectant unit. The ultraviolet light unit resides parallel to and above the keyboard tray while being rigidly affixed to the underside of the desktop.
Next Technologies, Inc.

Wearable to monitor exposure to uv radiation

A wearable or attachable device comprising a uv sensor configured to provide user-specific burn rate times providing an indication to the user when they are exposing themselves to harmful levels of uv radiation.. .
Stella Wearables, Inc.

Method for operating an illuminating device

Various embodiments may relate to a method for operating an illuminating device with a pump radiation source for emitting pump radiation, and a phosphor wheel, on which a first phosphor for emitting first conversion light and a second phosphor for emitting second conversion light are provided, in which method the phosphor wheel rotates about a rotation axis and in the process is irradiated with the pump radiation in an irradiation region eccentrically with respect to the rotation axis in such a way that a circular track is irradiated owing to the rotation of the phosphor wheel, wherein during a 360° revolution of the phosphor wheel the first phosphor is irradiated with a first pump radiation power and the second phosphor is irradiated with a second pump radiation power, which is different than the first pump radiation power.. .
Osram Gmbh

Lighting device for inspection and inspection system

In the inspection lighting device, between a surface light source for emitting an inspection light and the inspection object, at least one shielding mask is disposed, and a lens is disposed on a side closer to the inspection object than the shielding mask such that the shielding mask is positioned across the focus position of this lens as a center. In an irradiation solid angle of the inspection light for the inspection object formed when the light emitted from the surface light source is irradiated on to the inspection object by the lens the shielding mask forms a dark area.
Machine Vision Lighting Inc.

Substance detection method and substance detection device

A substance detection method includes exposing a sensor chip for surface-enhanced raman scattering having a metal microstructure and an organic molecular modification film which modifies the metal microstructure to a first gas, irradiating a first region of the sensor chip exposed to the first gas with first laser light, performing first measurement by acquiring the intensity of raman scattered light from the first region, blocking the first laser light after the performing the first measurement, and adjusting an irradiation region where the sensor chip is irradiated with the first laser light from the first region to a second region which is different from the first region of the sensor chip after the blocking the first laser light.. .
Seiko Epson Corporation

Encoder

A scale includes a grating pattern arranged in a measurement direction. A detection head can be moved relative to the scale in the measurement direction and outputs an electric signal indicating a result of detection of the pattern.
Mitutoyo Corporation

Conversion of lipids into olefins

A method of converting lipids to useful olefins includes reacting a mixture of lipids and a reactant olefin with microwave irradiation in the presence of ruthenium metathesis catalysts. The lipids may be unsaturated triacylglycerols or alkyl esters of fatty acids.
The Governors Of The University Of Alberta

Security mark, authentication method therefor, authentication device and manufacturing method as well as security mark ink and manufacturing method therefor

A method for authenticating a security mark containing a photochromic compound can provide higher security performance. The method comprises a process of irradiating a security mark containing a photochromic compound with excitation light, a process of acquiring first security information on a time-dependent change in the absorption spectrum and/or reflection spectrum of the security mark after the irradiation with excitation light, and a process of checking the acquired first security information against previously acquired first security information on the security mark.
Japan Science And Technology Agency

Laser recording device and recording method

According to one embodiment, a laser recording device performs recording by irradiating a recording medium with laser light. The recording medium includes thermal recording layers including thermal materials with different color development threshold temperatures and stacked in an ascending order of the threshold temperatures of the included thermal materials from a surface irradiated with the laser light; and an intermediate layer provided between the thermal recording layers to perform thermal insulation and thermal conduction.
Kabushiki Kaisha Toshiba

Method for manufacturing three-dimensional shaped object (as amended)

A selective laser sintering method reduces a warping deformation of a three-dimensional shaped object, the warping deformation being due to the scanning of a light beam. The manufacturing method is a method for manufacturing a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming, wherein a scanning of the light irradiation is divided into light beam-scannings “a” and “b”, the light beam-scanning “a” being for the light irradiation of a peripheral portion corresponding to a periphery of the three-dimensional shaped object, and the light beam-scanning “b” being for the light irradiation of an internal portion corresponding to a region of the three-dimensional shaped object, the region being located inside the periphery.
Panasonic Intellectual Property Management Co., Ltd.

Multi-purpose radiation therapy system

The present invention relates to a multi-purpose radiation therapy system. The radiation therapy system comprises a base, a treatment couch, a rotatable gantry, and at least two radiotherapeutic apparatuses.
Xi'an Cyber Medical Technology Co., Ltd.

Iv anticoagulant treatment systems and methods

An intravenous delivery system may have a plurality of components with interior surfaces that cooperate to define a fluid pathway through which fluid flows into a body of a patient. One or more anticoagulant coatings may reside on one or more of the interior surfaces to restrict blood clot formation in the fluid pathway.
Becton, Dickinson And Company

Method, apparatus, and system for radiation therapy

A device and method for radioembolization in the treatment of cancer cells in the body. In preferred embodiments, a radiomicrosphere is formed from a resin where an alpha emitting isotope is used for tumoricidal purposes.
Medical Theranostics Inc.

Method, apparatus, and system for radiation therapy

A device and method for radioembolization in the treatment of cancer cells in the body. In preferred embodiments, the device comprises at least two isotopes; wherein a first isotope is focused on therapeutic purposes and a second isotope is focused on dosimetric imaging purposes.
Medical Theranostics Inc.

Bpi and its congeners as radiation mitigators and radiation protectors

Described herein is a method of mitigating, in a subject (individual), tissue injury resulting from exposure to radiation (accidental/unintentional or intentional, such as therapeutic), chemoradiotherapy, disease, toxin, or drug or biologic mediated therapy.. .
Children's Medical Center Corporation

Object information acquiring apparatus

An object information acquiring apparatus comprises a light irradiation unit configured to irradiate an object with light; a sound generating member arranged between the object and the light irradiation unit and configured to generate a substantially planar ultrasonic wave based on the irradiated light; an acoustic wave probe configured to acquire an acoustic wave generated inside the object due to the light and convert the acoustic wave into a first electric signal; and an information generating unit configured to generate information concerning optical characteristics of an interior of the object, based on the first electric signal, wherein the sound generating member allows a part of the light irradiated from the light irradiation unit to pass through the sound generating member to the object.. .
Canon Kabushiki Kaisha

Object information acquiring apparatus and control object information acquiring apparatus

An object information acquiring apparatus includes: an acoustic wave generating member which absorbs light and generates an acoustic wave; an irradiating unit which irradiates an object or the acoustic wave generating member with light; a detector which detects an acoustic wave propagating from the object; a signal processing unit which generates object information that is information of the inside of the object, based on a signal output from the detector; and a switching unit which performs switching between a first mode in which a first acoustic wave generated inside the object due to irradiation of the light is detected by the detector and a second mode in which a second acoustic wave generated by the acoustic wave generating member due to irradiation of the light and having propagated inside the object is detected by the detector.. .
Canon Kabushiki Kaisha

Resolution control an adaptive optics system

An imaging apparatus with a wavefront controller and a method for controlling the apparatus. Sending control data based on a first setting to the wavefront controller to adjust an irradiation wavefront so as to set a beam shape of the irradiation beam of light.
Canon Kabushiki Kaisha





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