Abstract: A laser machining device includes a laser machining head and a control unit. The laser machining head applies laser for machining an object to be machined, and includes a first laser light source for first laser, a second laser light source for second laser having a different pulse width different from the first laser, a condensing optical system provided between the object and the laser light sources to condense at least the lasers on the object, a switch mechanism provided between the condensing optical system and the laser light sources so that the switch mechanism is movable to a position that at least one of the lasers enters the condensing optical system, and an irradiation angle change mechanism provided between the condensing optical system and the switch mechanism to change an irradiation angle of the first laser. The control unit controls the laser machining head.

Abstract: A laser processing method includes a step of irradiating a workpiece, in which a metal layer made of a heat-resistant alloy and a protective layer made of a thermal barrier coating are laminated, with a first laser beam that is a short-pulse laser beam, and forming a through-hole penetrating the metal layer, and a step of irradiating the workpiece with a laser beam to expand the through-hole.

Abstract: Provided is a laser processing method in which a laser processing head for irradiating, with at least a short-pulse laser, a processed article having a protection layer laminated to a metal layer is used to process the processed article, whereby high-quality, highly accurate processing is possible by means of a short-pulse laser processing step for irradiating the protection layer with the short-pulse laser and ablating the protection layer, and a metal layer processing step for ablating the metal layer in the area that was ablated during the short-pulse laser processing step.

Abstract: A laser machining device includes a laser machining head and a control unit. The laser machining head applies laser for machining an object to be machined, and includes a first laser light source for first laser, a second laser light source for second laser having a different pulse width different from the first laser, a condensing optical system provided between the object and the laser light sources to condense at least the lasers on the object, a switch mechanism provided between the condensing optical system and the laser light sources so that the switch mechanism is movable to a position that at least one of the lasers enters the condensing optical system, and an irradiation angle change mechanism provided between the condensing optical system and the switch mechanism to change an irradiation angle of the first laser. The control unit controls the laser machining head.

Abstract: This invention is directed to attenuating a beam output without changing the beam position and the beam diameter. A high-output optical attenuator includes a first reflector that totally reflects incident light and causes first reflected light serving as reflected light of the incident light to enter a second reflecting portion, a second reflector that reflects the first reflected light and causes second reflected light serving as reflected light of the first reflected light to enter a third reflecting portion, a third reflector that reflects the second reflected light and causes third reflected light serving as reflected light of the second reflected light to enter a fourth reflecting portion, and a fourth reflector that reflects the third reflected light as fourth reflected light having the same optical axis as the optical axis of the incident light. At least two of the second reflector, the third reflector, and the fourth reflector are half mirrors.

Abstract: A processing apparatus and a processing method which perform processing more accurately with a simple structure are provided. The processing apparatus includes an irradiation head 16 and a control device. The irradiation head 16 includes a laser turning unit 35 and a condensing optical system 37. The laser turning unit 35 includes a first prism 51, a second prism 52, a first rotating mechanism 53, and a second rotating mechanism 54. The control device adjusts the differences between rotation speeds and phase angles of the first prism 51 and the second prism 52 based on a relation between at least a heat affected layer of a workpiece and a turning speed of laser.

Abstract: A laser heating control mechanism according to this invention is a mechanism that performs proper adjustment of preheating or postheating by a simple operation in three-dimensional shaping. The laser heating control mechanism is a laser heating control mechanism for preheating or postheating a heating target object. The laser heating control mechanism includes an optical fiber that transmits a laser beam and radiates the laser beam from an opening end face, a collimation optical system that fucuses the laser beam radiated from the opening end face onto the heating target object, and an irradiation range adjustment mechanism that adjusts the distance between the opening end face and the collimation optical system along the irradiation axis of the laser beam so as to irradiate the heating target object with the laser beam at a predetermined beam diameter.

Abstract: This invention is directed to attenuating a beam output without changing the beam position and the beam diameter. A high-output optical attenuator includes a first reflector that totally reflects incident light and causes first reflected light serving as reflected light of the incident light to enter a second reflecting portion, a second reflector that reflects the first reflected light and causes second reflected light serving as reflected light of the first reflected light to enter a third reflecting portion, a third reflector that reflects the second reflected light and causes third reflected light serving as reflected light of the second reflected light to enter a fourth reflecting portion, and a fourth reflector that reflects the third reflected light as fourth reflected light having the same optical axis as the optical axis of the incident light. At least two of the second reflector, the third reflector, and the fourth reflector are half mirrors.

Abstract: Provided is a laser processing method in which a laser processing head for irradiating, with at least a short-pulse laser, a processed article having a protection layer laminated to a metal layer is used to process the processed article, whereby high-quality, highly accurate processing is possible by means of a short-pulse laser processing step for irradiating the protection layer with the short-pulse laser and ablating the protection layer, and a metal layer processing step for ablating the metal layer in the area that was ablated during the short-pulse laser processing step.

Abstract: A flow volume measurement device or a flow velocity measurement device include a measurement cell including a main pipe, an incident tube that is connected to the main pipe, an emission tube that is connected to the main pipe, and a first purge-fluid supply tube that is connected to the incident tube, a purge-fluid supply unit that supplies purge fluid into the first purge-fluid supply tube of the measurement cell, a light emitting unit that emits a laser beam to the measurement cell, a light receiving unit that receives the laser beam emitted from the light emitting unit and having passed through the measurement cell, and outputs a received amount of light as a light reception signal, a calculation unit that calculates a flow volume or a flow velocity of exhaust fluid flowing in the measurement cell, based on a light reception signal output from the light receiving unit.

Abstract: A processing apparatus and a processing method which perform processing more accurately with a simple structure are provided. The processing apparatus includes an irradiation head 16 and a control device. The irradiation head 16 includes a laser turning unit 35 and a condensing optical system 37. The laser turning unit 35 includes a first prism 51, a second prism 52, a first rotating mechanism 53, and a second rotating mechanism 54. The control device adjusts the differences between rotation speeds and phase angles of the first prism 51 and the second prism 52 based on a relation between at least a heat affected layer of a workpiece and a turning speed of laser.

Abstract: An object of the present invention is to provide a flue gas purifying device that can efficiently decrease nitrogen oxides in flue gas.

Abstract: A barrier-film forming apparatus that forms a barrier film on an inner face of a container having a concave or convex portion as a processing target, including: a dielectric member having a cavity sized to enclose the container, an external electrode covering an outer circumference of the dielectric member, an exhaust unit installed on an end face of the external electrode on a side where a mouth of the container is located, with an insulating member interposed therebetween, and depressurizing inside of the container through an exhaust pipe, an internal electrode inserted from a side of the exhaust pipe and also serving as a gas blowout unit that blows out medium gas for generating a barrier film into the container, and an electric-field applying unit that applies an electric field for generating exhaust between the external electrode and a ground electrode.

Abstract: A barrier-film forming apparatus that forms a barrier film on an inner face of a container having a concave or convex portion as a processing target, including: a dielectric member having a cavity sized to enclose the container, an external electrode covering an outer circumference of the dielectric member, an exhaust unit installed on an end face of the external electrode on a side where a mouth of the container is located, with an insulating member interposed therebetween, and depressurizing inside of the container through an exhaust pipe, an internal electrode inserted from a side of the exhaust pipe and also serving as a gas blowout unit that blows out medium gas for generating a barrier film into the container, and an electric-field applying unit that applies an electric field for generating exhaust between the external electrode and a ground electrode.

Abstract: An object of the present invention is to provide a flue gas purifying device that can suppress leakage of ammonia and can efficiently decrease nitrogen oxides in flue gas. The object is achieved by a flue gas purifying device including: an exhaust pipe; a urea-water injecting unit that injects urea water into the exhaust pipe; a catalytic unit that includes a urea SCR catalyst that promotes a reaction between ammonia and nitrogen oxides and a support mechanism that supports the urea SCR catalyst in the exhaust pipe, and is arranged on a downstream side to a position where urea water is injected; a concentration measuring unit arranged on a downstream side to the catalytic unit in a flow direction of flue gas to measure an ammonia concentration in flue gas having passed through the urea SCR catalyst; and a control unit that controls injection of urea water by the urea-water injecting unit based on an ammonia concentration measured by the concentration measuring unit.

Abstract: An inner electrode for barrier film formation is an inner electrode for barrier film formation that is inserted inside a plastic container having an opening, supplies a medium gas to the inside of the plastic container, and supplies high frequency power to an outer electrode arranged outside the plastic container, thereby generating discharge plasma on the inner surface of the plastic container to form a barrier film on the inner surface of the plastic container, and that is provided with a gas supply pipe having a gas flow path to supply a medium gas and an insulating member screwed into an end portion of the gas supply pipe to be flush therewith and having a gas outlet communicated with the gas flow path.

Abstract: A flow volume measurement device or a flow velocity measurement device include a measurement cell including a main pipe, an incident tube that is connected to the main pipe, an emission tube that is connected to the main pipe, and a first purge-fluid supply tube that is connected to the incident tube, a purge-fluid supply unit that supplies purge fluid into the first purge-fluid supply tube of the measurement cell, a light emitting unit that emits a laser beam to the measurement cell, a light receiving unit that receives the laser beam emitted from the light emitting unit and having passed through the measurement cell, and outputs a received amount of light as a light reception signal, a calculation unit that calculates a flow volume or a flow velocity of exhaust fluid flowing in the measurement cell, based on a light reception signal output from the light receiving unit.

Abstract: A method and apparatus for measuring density which can simultaneously measure gaseous substance density and solid particulate material density and further can simultaneously measure the densities of a plurality of materials such as black smoke, white smoke, and water vapor. The method includes irradiating a laser having at least one wavelength equivalent to an absorption wavelength of each gaseous substance to be measured.

Abstract: A flue gas purifying device includes an exhaust pipe that guides flue gas discharged from an internal combustion engine; a catalytic unit that is arranged on a downstream side to the internal combustion engine in a flow direction of flue gas and includes a nitrogen-oxide storage-reduction catalyst that stores nitrogen oxides contained in flue gas and a support mechanism that is arranged in the exhaust pipe and supports the nitrogen-oxide storage-reduction catalyst in the exhaust pipe; a reducing-agent injecting unit that injects a reducing agent to the catalytic unit in the exhaust pipe; a concentration measuring unit that is arranged on a downstream side to the catalytic unit in the flow direction of flue gas and measures a concentration of nitrogen oxides in flue gas having passed through the nitrogen-oxide storage-reduction catalyst; and a control unit that controls whether to inject the reducing agent from the reducing-agent injecting unit based on a concentration of nitrogen oxides measured by the concen

Abstract: An inner electrode for barrier film formation is an inner electrode for barrier film formation that is inserted inside a plastic container having an opening, supplies a medium gas to the inside of the plastic container, and supplies high frequency power to an outer electrode arranged outside the plastic container, thereby generating discharge plasma on the inner surface of the plastic container to form a barrier film on the inner surface of the plastic container, and that is provided with a gas supply pipe having a gas flow path to supply a medium gas and an insulating member screwed into an end portion of the gas supply pipe to be flush therewith and having a gas outlet communicated with the gas flow path.