860 results about "Irradiation time" patented technology

A power supply for applying a voltage to a scanning electromagnet for deflecting a charged particle beam has a first power supply unit having no filter and a second power supply unit having a filter. When an irradiation position of the charged particle beam in an irradiation object is moved, the first power supply unit, namely a power supply unit having no filter, is used to apply the voltage to the scanning electromagnet, so that an exciting current flowing in the scanning electromagnet can be changed in a short time. Further, when the irradiation position of the charged particle beam is maintained, the second power supply is used to apply a voltage whose pulsating component was removed to the scanning electromagnet, so that the exciting current flowing in the scanning electromagnet can be controlled precisely. Consequently, the charged particle beam can be applied uniformly to the irradiation object and an irradiation time of the charged particle beam to the irradiation object can be curtailed.

A method for controlling the threshold voltage of a semiconductor element having at least a semiconductor as a component is characterized in including a process to measure one of a threshold voltage and a characteristic value serving as an index for the threshold voltage; a process to determine one of the irradiation intensity, irradiation time, and wavelength of the light for irradiating the semiconductor based on one of the measured threshold voltage and the measured characteristic value serving as the index for the threshold voltage; and a process to irradiate light whose one of the irradiation intensity, irradiation time, and wavelength has been determined onto the semiconductor; wherein the light irradiating the semiconductor is a light having a longer wavelength than the wavelength of the absorption edge of the semiconductor, and the threshold voltage is changed by the irradiation of the light.

Systems and methods of collapsing the air lines in the air line-containing region of a nanostructure optical fiber are disclosed. One method includes initiating irradiation of a portion of the nanostructure optical fiber from essentially opposite directions with at least first and second laser beams having substantially equal power and essentially the same mid-infrared wavelength. The method includes continuing the irradiation for an irradiation time t₁ so as to bring the optical fiber portion to a softening temperature T_S at which the air lines in the optical fiber portion collapse into the adjacent cladding. Exemplary optical systems for carrying out the air- line-collapsing methods of the present invention are also disclosed.

A series of novel positively-charged porphyrins is disclosed which exhibit a markedly increased efficiency in photosensitizing both Gram-positive and Gram-negative bacteria to the action of visible light, causing death to such bacteria when present at much lower concentrations and much shorter irradiation times than those porphyrins taught in the prior art. These porphyrins are characterized by the presence of up to four positive charges in the peripheral substituents and at least one hydrophobic tail comprising between 6 and 22 carbons inclusive, originating at one or more of the charged sites.

A glass transparent heat-insulating coating and its preparation method, the coating contains cesium tungsten bronze powder with a general formula of Cs0.1-3.5WO3, the crystal phase composition of the powder is Cs0.2WO3 or Cs0.32WO3, the powder The particle size is 100-1300nm, and the specific surface area is 7-50m2/g. The glass transparent heat-insulating coating of the present invention has the functions of visible light transmission and near-infrared shielding, and has the function of light self-regulation, that is, with the extension of light intensity and light time, the effects of visible light transmission and near-infrared shielding will be further enhanced , so it is especially suitable for preparing transparent thermal insulation film on the surface of glass. It is an intelligent transparent thermal insulation coating for glass and has broad application prospects in the fields of thermal insulation of architectural window glass and automotive glass. The coating has simple components and is suitable for large-scale industrial production and practical application.

In a laser beam machining method for a wiring board, a machined portion of the wiring board is irradiated with a pulsed laser beam for a beam irradiation time ranging from about 10 to 200 μs and with energy density of about 20 J/cm² or more, thereby machining the wiring board, for example, drilling for a through-hole and a blind via hole, grooving, and cutting for an outside shape. The laser beam operates at a frequency of more than 67 Hz, and the spot of the laser beam is sequentially moved to different drilling positions for each pulse. After all of many drilling positions in the range of a scan vision are irradiated with the laser beam pulse by pulse, or after the elapse of a time of 15 ms or more from irradiation of the first drilling position, the laser spot is returned to the first drilling position. The spot is sequentially moved once again, and the movement is repeated several times. A pause of 15 ms or more is required between pulses directed to the same drilling position to avoid formation of a thick char layer and projection of glass cloth into the hole.

A lighting system for preventing a plant disease damage is provided with an ultraviolet light source which emits ultraviolet ray including UV-B in a wavelength region of 255 to 340 nm, a visible light source which emits visible light, and controllers which control a lighting of the ultraviolet light source and the visible light source. The controller controls the lighting of the ultraviolet light source so that a horizontal irradiance on a canopy surface of a plant is 50 μW/cm² or less during a predetermined daytime period. The controller controls the lighting of the visible light source so that a horizontal illuminance on a canopy surface of a plant is 10 lux or less during a predetermined nighttime period. The lighting system promotes a component change of the plant effectively by a stimulation by the UV-B irradiation and the prolonged irradiation time of the visible light which is associated with a vegetative growth, so that a nutritional component of the plant can stably be increased. Moreover, the lighting of the ultraviolet light source and the visible light source is controlled by the controllers, thus a user effort is reduced and efficiency is achieved.

The invention relates to a simulating test method of an electronic component and discloses a ground equivalent fluence calculating method for an electronic component charged particle irradiation effect. The ground equivalent fluence calculating method for the electronic component charged particle irradiation effect aims to solve the technical problem that a ground simulation test of the irradiation effect of the existing electronic component is large in experimental error. The ground equivalent fluence calculating method for the electronic component charged particle irradiation effect comprises the following steps: measuring the energy spectrum of orbit charged particles received by the electronic component; utilizing the method of Monte-Carlo or the program of GEANT4 to calculate the in-orbit lonization and the displacement absorbed dose D1 which pass through a protection layer and reach the surface of the electronic component; determining the thickness of a sensitive area of the electronic component; determining the types and energy of particles under the selected condition of the test, calculating the lonization and the displacement absorbed dose D2 of the sensitive area under the condition of the test through the method of Monte-Carlo or the program of GEANT4; and calculating the equivalent fluence phi and the irradiation time t under the condition of a laboratory according to D1=D2. The ground equivalent fluence calculating method for the electronic component charged particle irradiation effect is used for a simulation test of the electronic component.

An irradiation device for radiation treatment and a collimator (1) are used to define a beam of high-energy rays (2) with beam limitation by means of an iris diaphragm (5) having adjusting elements (7), and a mechanism that is used to direct the beams (2′) limited by the collimator (1) to the object to be treated (4) from all sides, wherein the parameters for direction, surface area, intensity and time of irradiation can be specified with the help of a control mechanism. An exact three-dimensional irradiation profile is produced, while keeping the costs and efforts regarding mechanical engineering, computation and irradiation time low. This is achieved by using at least one further iris diaphragm (6) located in coaxial alignment in the optical path, whereby the leaves (9, 9′, 9″, 9′″, 9″″, 9′″″) of the iris diaphragms (5, 6) are arranged in a staggered manner and in a rotational sense around their axis (11), so that the beam limited by the collimator (1) has the cross-section of a polygon (12), the number of corners of which complies with the number of the leaves of all iris diaphragms (5, 6), so that the leaves (9, 9′, 9″, 9′″, 9″″, 9′″″) allow for linear adjustment movements (13), the control mechanism being suitable to enable the irradiation of an irregular space through the overlaying and adjoining of many irradiated spaces (28).

[Object]To provide a scan-type projection device that can lengthen a projecting time during a battery-powered operation.

[Constitution] If a battery 600 is sufficiently charged, an actuator control part 120 drives a movable mirror 43 so as to form a normal turning angle, and an image signal processing part 130 drives a light source part 41 so as to irradiate laser lights with predetermined gradations to one pixel region for a normal irradiation time t1. Accordingly, an image with a normal screen size is displayed on a projection plane. Meanwhile, if the battery becomes low in remaining level, the actuator control part 120 drive the movable mirror 43 so as to form a small turning angle, and the image signal processing part 130 drives the light source part 41 so as to irradiate laser lights with predetermined gradations to one pixel region for a short irradiation time t2. Accordingly, an image with a reduced screen size is displayed on a projection plane.

The invention discloses a Watt-level all-solid ultraviolet laser cleaner and a laser cleaning method, which pertains to the optical energy cleaning technology field and are applied to cleaning micro electronic substrate such as the integrated circuit. The power of the cleaner is connected with a laser resonance chamber; two non-linear optical crystals, a selective microscope and a reflector are positioned in the light path of pulsed laser from the laser resonance chamber; a rotating mirror drum is fixed above one side of the reflector; a work piece to be cleaned is arranged on a convey belt; a blower is positioned at one side of the convey belt and a cleaner is arranged at the other side. By adopting the method, substrates to be cleaned can be continuously or discontinuously conveyed to go through the laser which is Watt-level pulse laser with about 266nm and comes from the all-solid laser; proper laser intensity, pulse frequency and irradiation time can be controlled to effectively remove micron and submicron particles, organics, oily contamination, etc. on the surface of the substrate. The adhesion of the coating after cleaning and the product yield rate are greatly improved and the warp or spalling of the coating rarely happens.

The invention relates to a preparation method of a transparent conducting material based on a 3D printing technology. The preparation method is characterized by comprising the following steps of 1) modeling; designing a model of a strip transparent conducting electrode by utilizing computer modeling software, and converting a software command of the model to a mechanical equipment directive of 3D printing so as to control the moving path, the movement speed and the liquid jet velocity of each 3D printing head as well as the moving path, the movement speed and the laser irradiation time of each laser head; and 2) printing the strip transparent conducting electrode. The transparent conducting electrode prepared by the invention has the advantages of good light transmittance and good electrical conductivity and overcomes the defect of poor adhesiveness of between a carbon nano-tube film layer and a substrate and between a graphene film layer and the substrate; and by adopting the method, the thickness and the width of the transparent conducting electrode are precisely controlled.

An irradiation dose calculator calculates a pre-exposure-mode-required irradiation dose using the thickness of a breast which measured by a thickness measuring unit, as a parameter, and the irradiation time of a pre-exposure mode is controlled to apply a radiation to the breast in the pre-exposure mode. According to the dose of the radiation detected by a dose detecting sensor in the pre-exposure mode, the irradiation dose calculator calculates a main-exposure-mode-required irradiation dose, and the irradiation time of a main exposure mode is controlled to apply the radiation to the breast in the main exposure mode, thereby capturing a radiation image of the breast.

The invention discloses a method and a device for forming a plastic part microstructure based on laser heating, and relates to the field of formation of the plastic part microstructure, in particular to the method and the device for forming the plastic part microstructure based on laser heating. The surface of a base body of a plastic part with microstructure characteristics is quickly heated and molten by utilizing the heat effect of laser on a polymer and accurately controlling laser power and irradiation time as well as irradiation mode, and the plastic part microstructure is formed and processed through a laser heating extrusion forming device. The method and the device have the advantages of high forming precision, large scale range, good flexibility, high efficiency and low cost, are suitable for large-batch automatic forming and processing of the plastic part microstructure, and have higher application values.

In light-irradiation heating with a total irradiation time of one second or less, two-stage irradiation is performed, including a first stage of light irradiation of a semiconductor wafer, which irradiation produces an output waveform that reaches a peak at a given emission output; and a second stage of supplemental light irradiation of the semiconductor wafer, which irradiation is started after the peak, producing an emission output smaller than the above given emission output. The emission output in the second stage is two thirds or less than the above given emission output at the peak. The first-stage light-irradiation time is between 0.1 and 10 milliseconds, and the second-stage light-irradiation time is 5 milliseconds or more. This allows the temperature of the semiconductor wafer even at a somewhat greater depth below the surface to be raised to some extent while allowing the surface temperature to be maintained at a generally constant processing temperature.

The invention relates to a finishing method for improving the hydrophilicity of a polyester fabric. Polyethylene glycol serving as a graft monomer is subjected to grafting reaction on a polyester fiber under the initiation of low temperature plasma treatment. The method comprises the following three steps of: impregnating the graft monomer, performing grafting treatment, and performing aftertreatment, wherein in the step of impregnating the graft monomer, the concentration of aqueous solution of polyethylene glycol is 5 to 30 percent, the impregnating temperature is between 20 and 30 DEG C, the impregnating time is 1 to 1.5 hours, and the bath ratio is 1:30-1:50; the grafting treatment is the low temperature plasma treatment, the irradiation atmosphere is argon, the irradiation intensity is 50 to 200W, the irradiation time is 1 to 5 minutes, and the vacuum degree is 20 to 80Pa; and the aftertreatment step comprises washing and drying. By the finishing method, the performance of the hydrophobic polyester fabric is obviously improved, the moisture absorption and moisture transfer performance of the polyester fabric is improved, and the effect that the polyester fabric is comfortable to wear and use is achieved.

A multi charged particle beam writing method includes calculating first shot positions of multiple beams, each of which includes a distortion amount of an irradiating corresponding beam, in a case of irradiating each beam, based on control grid intervals, calculating first condition positions based on a pre-set condition, each of which is arranged in a corresponding first region surrounded by closest second shot positions of 2×2 in length and width of the first shot positions, calculating, for each of second regions respectively surrounded by closest second condition positions of the first condition positions, an area density of a figure pattern in overlapping with a second region concerned, calculating an irradiation amount or an irradiation time of each beam whose corresponding first shot position is in a corresponding second region, based on an area density, and writing a pattern by irradiating a beam of the calculated irradiation amount or time.

The invention discloses a mobile multimedia terminal having disinfection and sterilization functions. The mobile multimedia terminal comprises a housing and is characterized in that an UV light emitting diode is fixedly arranged inside the housing; the housing is provided with a light inlet window; and the light emitted from the UV light emitting diode shines through the light inlet window. The mobile multimedia terminal can be used to irradiate an article to be disinfected at close range and has a good sterilization effect. By DC electrical source for power supply, irradiation time can be set and power consumption is effectively reduced. The mobile multimedia terminal is small in size and convenient to carry. Due to the arrangement of a protective device, the mobile multimedia terminal can be used to prevent human body from being irradiated by ultraviolet ray.