89 results about "Beam size" patented technology

A method of making a vacuum insulating panel, the vacuum insulating panel including a first glass substrate, a second glass substrate, a plurality of spacers provided in a gap between at least the first and second glass substrates, and a seal provided between at least the first and second glass substrates, the seal comprising a first seal layer. The method may include: providing first seal material for the first seal layer in a location at least partially between at least the first and second glass substrates; laser heating, using a laser beam from a continuous wave near-IR laser, the first seal material in order to form the first seal layer; wherein said laser heating may comprise using the laser beam, having a size of from about 2-15 mm, so that the laser beam at least partially passes through at least one of the glass substrates to fire and / or sinter the first seal material thereby forming the first seal layer, in a manner so that the first seal layer a density of from about 2.8-4.0 g / cm3; and after forming the first seal layer, evacuating the gap to a pressure less than atmospheric pressure.

An electron beam size measuring device (100) and measuring method. The electron beam size measuring device (100) comprises an electron beam source (110), an anode target (120), a driving device (140), and a detection device (130). The electron beam source (110) is used for emitting an electron beam. The anode target (120) comprises a bombardment surface (121) for receiving the electron beam, and the bombardment surface (121) comprises a first material surface (1211) and a second material surface (1212) arranged side by side. The driving device (140) is connected to the electron beam source (110) and / or the anode target (120) and is used for driving the electron beam source (110) and / or the anode target (120) to make relative movement, so that the electron beam scans the first material surface (1211) and the second material surface (1212). The detection device (130) is used for detecting a signal generated after the bombardment surface (121) is bombarded by the electron beam, and the signal is used for determining the size of the electron beam.

The embodiment of the invention provides a particle source assembly and particle beam equipment, relates to the technical field of charged particle beam processing and detection equipment, and is used for improving the degree of freedom of beam state adjustment of charged particle beams. The particle source assembly comprises a particle source, an adjustable diaphragm and a collimating lens device which are arranged along a first direction. Wherein the particle source is used for generating a charged particle beam which is emitted towards the adjustable diaphragm along a first direction; the adjustable diaphragm is positioned in a transmission path of the charged particle beam, and the size of a diaphragm hole is adjustable, so that the beam size of the charged particle beam is adjusted; the collimating lens device is used for collimating the charged particle beam emitted from the adjustable diaphragm, and the position of the collimating main plane in the first direction is adjustable. The particle source assembly can be applied to particle beam equipment.

The utility model discloses a light feeding instrument to solve the problem that retina light damage is possibly caused after long-term use in the prior art, and meanwhile, the treatment effect is also improved. Compared with the prior art in which only parameters such as red light source power and emergent light beam size are concerned, the utility model focuses on the important index of irradiance (power density), emergent light is a collimated Gaussian beam and the optical characteristics of eyes (a human eye refraction system is equivalent to a convex lens with a focal length of 17.2 mm). An optical component diffuser is additionally arranged at the position close to the cornea of a user, so that a collimated Gaussian beam is converted into diffused light to enter the eyes of the user, and diffused light spots are formed on the retina, the treatment area is sufficient, energy distribution is uniform, it is ensured that the irradiance is at the expected safety magnitude, and meanwhile the actual treatment effect is ensured.

A computer-implemented method for optimizing a video encoder. The method includes the step of defining a plurality of CUs of the video encoder that correspond to a plurality of stages. The plurality of stages includes at least a first stage, and a second stage immediately after the first stage. The method further includes the steps of providing a decision space of encoding parameters of the video encoder, and defining, for the second stage, a subspace being a subset of the decision space. The subspace contains b1 optimal decision paths from the first stage to the second stage, wherein b1 is defined as a beam size for the first stage. The b1 optimal decision paths are the b1 decision paths that have lowest accumulated cost among all decision paths from the first stage to the second stage.

The invention relates to an X-beam collimator for a crystal diffraction experiment. A main body of the X-beam collimator is of a stepped structure comprising an upper end thin part and a lower end thick part; the fixing hole is formed in the upper end thin part of the main body and is fixedly connected with an external driving motor to drive the main body to move; the loading hole is formed in the thick part of the lower end of the main body and is a cylindrical blind hole; the light beam control piece is of a cylindrical structure and is made of platinum iridium alloy, a small round hole is formed in the center of the light beam control piece, and the light beam control piece is installed in the loading hole in a matched mode. The light-transmitting hole is formed in the bottom of the loading hole, the axis of the light-transmitting hole is collinear with the light path axis of the coaxial microscope and the diffractometer, and the light-transmitting hole is used for allowing the X beams screened by the small hole to pass through. The fixing holes are fixedly connected with the motor, so that the motor can drive the main body to move; light beam control sheets with different light beam size control capabilities are loaded through the loading holes; the X-ray beam passes through the collimator through the light hole, the structure is simple, the size and the mass are small, and rapid collimation and size control of the X-ray beam can be achieved.

This application relates to the technical field of suspended monorail rail transit. Specifically, it relates to a support connection device and a support connection method for a suspended monorail track beam. The support connection device includes: a track beam and a support part, and the track beam is suspended and connected below the support part; the support part and the track beam are connected through a crossbeam structure, and the crossbeam structure is arranged along the running direction; the support connection device and the support connection method of this application can effectively use a longer track beam size under the same mass, or reduce the weight of the track beam under the same length, and can reduce the quantity requirements for support columns, etc., save land area, and reduce the installation difficulty.

The present subject matter provides a high-speed nanopatterning method and apparatus of two-color super-resolution photolithography. According to the present subject matter, a high-speed nanopatterning apparatus of two-color super-resolution photolithography comprises: a first light source for outputting photochemical reaction initiation light of a first wavelength causing a photochemical reaction to occur in an illuminated area of a photoresist; a first lens for enlarging a beam size of the photochemical reaction initiation light; a second light source for outputting inhibition light of a second wavelength suppressing the photochemical reaction in the illuminated area of the photoresist; a second lens for enlarging a beam size of the inhibition light; and a digital micromirror device including a plurality of micromirrors controlled at a first angle and a second angle and for reflecting a portion of the photochemical reaction initiation light output from the first light source or the inhibition light output from the second light source toward the photoresist through the plurality of micromirrors.

Devices, systems and methods related to all-reflective microscopes are described. The microscopes include an all-reflective off-axis optical system and is characterized with substantially zero chromatic aberration, low group delay dispersion and no central obscuration. One reflective microscope configuration includes a reflective objective subsection with at least three mirrors, where at least one mirror is off-axis and non-spherical. The reflective microscope also includes a reflective relay subsection with at least two minors having freeform surfaces and positioned to receive light from the reflective objective subsection. The reflective relay subsystem is configured to produce a magnification to allow coupling of light between two planes having differing beam sizes. The reflective microscope further includes an imaging subsection with at least one mirror having a freeform surface and positioned to receive light from the reflective relay subsection and to direct light received thereon in reflection in a direction of a sensor.

The invention discloses a vortex beam orbital angular momentum detection device and method based on a well-shaped line structure. The device sequentially comprises a well-shaped line structure and a focusing lens in the light path direction. A vortex light beam enters the well-shaped line structure to be diffracted, the focusing lens converges the vortex light beam to a focal plane, and a characteristic diffraction pattern related to a topological charge value is formed. The well-shaped line structure is composed of two groups of parallel line pairs which are mutually orthogonal, and the line width and the line spacing can be optimally designed according to the working wavelength and the light beam size. The core of the invention lies in that the well-shaped line structure is utilized to replace a traditional small-hole diaphragm, so that interfering secondary diffraction light spots in a far-field diffraction pattern are thoroughly eliminated, diffraction main light spots related to topological charges are clearly presented, and most (more than 64%) incident light energy is concentrated; and the availability and reliability of the method are improved to a great extent. The device is simple in structure and convenient to adjust, the reliable detection range of the orbital angular momentum is remarkably improved to 30 orders or above, and the device is particularly suitable for detection of weak-intensity vortex light beams and has great significance in promoting development of the free space optical communication technology.

The present application relates to the technical field of accelerator beam measurement, and particularly discloses a water gravity type inner target beam measurement device, which comprises a beam measurement assembly, a gravity adjustable cooling assembly, a lever balance assembly and a limiting piece, the beam measurement assembly is connected to one end of the lever balance assembly through the gravity adjustable cooling assembly, and the limiting piece is arranged on the side surface of the lever balance assembly. The device adopts a seesaw type structure, fully utilizes the installation space in the cyclotron shell, utilizes the gravity of the cooling liquid as the power of the seesaw type structure, can omit the arrangement of a complex power driving piece, is small in size, simple in structure, low in cost, good in cooling effect, and stable in the beam size of the inner target measurement piece during measurement.

The embodiment of the invention discloses a method and device for determining material consumption and waste output of a foundation pit supporting beam, and the method comprises the steps: opening or creating a three-dimensional building information model comprising a foundation pit model and a supporting member model in target building model software; obtaining three-dimensional model information, supporting beam related parameters, foundation pit elements and supporting component elements from the three-dimensional building information model, and determining a generation range of a foundation pit supporting beam; determining modeling positioning information of the supporting beams based on the generation range of the foundation pit supporting beams and the setting spacing of the supporting beams; generating a supporting beam model within the generation range of the foundation pit supporting beam based on the modeling positioning information of the supporting beam, the supporting beam size parameters and the supporting beam reinforcement information; and determining the concrete consumption, the steel bar quality and the waste generation amount based on the support beam model and the reinforcement information. According to the embodiment of the invention, the concrete consumption, the steel bar quality and the waste generation amount of the foundation pit supporting beam can be accurately determined.

This invention relates to a welding temperature gradient control method and apparatus based on neutron source residual stress detection, belonging to the field of welding control technology. This technology establishes a correlation between laser power, beam size, scanning rate, metal type, and temperature by constructing a temperature field data acquisition module and a heating and cooling module for the welding process, and by using laser-assisted local heating and forced substrate cooling devices. It develops a temperature gradient control method to achieve online physical simulation of the temperature gradient between the welding zone and the substrate, solving the problem of mismatch between the welding cooling rate and the neutron data acquisition rate, and realizing in-situ online testing of the stress field near welding conditions.

The present invention discloses a design method for a mask capable of rotating a light beam parallel to the optical axis. The present invention proposes a light beam that can be rotated parallel to the optical axis. By segmenting the shaped light beam and separately modulating additional Fourier phase shifts, and then superimposing them to obtain the hologram transmittance function of the light beam, combining the hologram transmittance function and a blazed grating, a mask capable of rotating a light beam parallel to the optical axis can be obtained. Using this mask, a light beam that can be rotated parallel to the optical axis can be generated. The rotation angle, beam size, and rotation radius of the light beam generated by this technology can all be arbitrarily modulated, thereby realizing longitudinal micro-manipulation of particles. This technology solves the problem that structured light beams cannot achieve longitudinal micro-manipulation of particles, and theoretically can endow structured light beams with the ability to support multi-particle longitudinal micro-manipulation in three-dimensional space. This technology is easy to operate and use, providing great potential for the future development of structured optical tweezers.

The present invention discloses an Airy two-photon microscopy imaging method and device with global enhanced aberration correction, belonging to the technical field of biological imaging. The imaging method includes the following steps: S1. Expand the laser beam through a laser beam expansion module to ensure that the laser illumination beam meets the beam size requirements for subsequent modulation; S2. Generate an Airy beam and perform wavefront correction through an AO correction module; S3. Split and combine two beams through a beam splitting and combining module; S4. Drive the beam to scan the entire sample through a beam scanning module; S5. Collect the sample signal through a fluorescence collection module. By adopting the above-mentioned Airy two-photon microscopy imaging method and device with global enhanced aberration correction, the present invention simultaneously realizes the generation of an Airy beam and real-time aberration correction through a single spatial light modulator, improves the imaging resolution of the two-photon imaging device, and helps to observe more detailed tissue information in in vivo imaging applications.

The invention relates to the field of atomic interference measurement, in particular to an atomic Raman interferometer based on a flat-topped beam. Comprising two Raman interference subsystems arranged in parallel, each of the two Raman interference subsystems comprises an ultrahigh vacuum cavity and a light path system, and the light path system comprises a flat-topped beam shaping module located on one side of the high vacuum cavity and a Raman light Doppler sensitive configuration module located on the other side of the high vacuum cavity; in the flat-topped beam shaping module, the holographic algorithm principle is adopted, the actual size of atoms in an interference area is combined to determine the size of a target flat-topped beam, the initial complex amplitude is precisely constrained, and a final diffraction phase is obtained through iterative optimization. After the Raman light passes through the diffraction phase, the Raman light is shaped into a flat-topped light beam with a target size and uniform intensity distribution at the ultrahigh vacuum cavity, so that the coherence efficiency under the same interference time is remarkably improved.

This invention discloses a device and method for real-time thermal focal length measurement of a long-pulse LDA side-pump module. The device includes a detector source, a beam expander system, an LDA side-pump module, a knife edge, an energy meter, and a signal generator. The detector source serves as the detection light source for thermal focal length measurement; the beam expander system serves as a beam expander for the detector source size; the LDA side-pump module serves as a heat source generator to achieve high peak power pump injection under long-pulse pumping; the knife edge is placed on both sides of the beam waist position after the detector source passes through the LDA side-pump module to cut the transverse and longitudinal beams, achieving beam size characterization; the energy meter is placed in the rear region of the measurement device to acquire the energy measurement of the detector source; and the signal generator serves as a timing control part to achieve timing synchronization between the detector source and the LDA side-pump module. This invention uses timing synchronization combined with Gaussian beam transmission transformation to obtain the thermal focal length value of the long-pulse LDA side-pump, which has the advantages of simple structure, ease of operation, and high measurement accuracy.

A vehicle lighting system comprising: a light source for generating illumination, a liquid lens optically aligned with the light source to receive the illumination and generate an output beam, and a controller configured to regulate the electrical power supplied to the liquid lens. The controller applies a first voltage to the liquid lens to generate a first output beam with a first beam size, and applies a second voltage to the liquid lens to generate a second output beam with a second beam size.

Beam monitors, methods of use and fabrication are provided herein. Beam monitors can include a rounded beam cavity with one or more waveguide connected thereto, from which a signal can be used to determine one or more beam characteristics. Such monitors can include a beam intensity monitor that includes a cylindrical beam cavity with a rectangular waveguide extending from a periphery, from which beam intensity can be determined. An advanced beam monitor can include a multi-moded beam cavity having multiple waveguides connected at distinct locations, each corresponding to a differing excitation mode. Such monitor can include an elliptical beam cavity and five waveguides connected thereto, signals from which can be used to determine beam charge, beam position and beam size in both the x-direction and y-directions. Beam monitors can be stand-alone devices or integrated within linear accelerators. Accelerators can include off-axis beam monitor coupling ports and on-axis tuning features.

The invention belongs to the technical field of building formworks, and particularly relates to an aluminum formwork system lower forming steel reinforcement framework system and a construction method thereof.The aluminum formwork system lower forming steel reinforcement framework system comprises an X-direction beam bottom plate, a Y-direction beam bottom plate and a Z-direction lower beam support, and further comprises an X-direction supporting assembly, a Y-direction supporting assembly and a Z-direction supporting assembly, the X-direction supporting assembly is arranged above the X-direction beam bottom plate, and the X-direction beam bottom plate and the X-direction supporting assembly jointly support a steel reinforcement framework component. Adjustment and standardized machining of the X-direction beam size, the Y-direction beam size and the Z-direction column size can be met, the device is suitable for most standard frame structure beam joints, application of a steel reinforcement framework under an aluminum formwork system is achieved, the assembling efficiency is improved, development of steel reinforcement engineering prefabrication and assembly is promoted, steel reinforcement framework components can be buffered and supported when lowered, and the construction efficiency is improved. Excessive impact on the aluminum formwork system structure caused by improper hoisting is avoided, and the safety of the steel reinforcement framework system during construction is improved.

The utility model provides a steel structure cantilever beam and concrete beam connecting structure which comprises a concrete secondary beam, a concrete boundary beam and a cantilever steel beam, the concrete boundary beam is higher than the concrete secondary beam, and the concrete boundary beam is connected with the cantilever steel beam through a steel rib beam with a variable cross section. The steel rib beam is pre-buried in the concrete secondary beam and the concrete boundary beam, the large-section area of the steel rib beam extends out of the concrete boundary beam, the length of the extending part is not larger than 1 m, and the section of the large-section area of the steel rib beam is the same as the size of the cantilever steel beam. The cantilever steel beam upper flange and the cantilever steel beam lower flange are respectively welded with the steel rib beam upper flange and the steel rib beam lower flange which extend out of the concrete boundary beam, and the cantilever steel beam web is connected with the steel rib beam web which extends out of the concrete boundary beam through a connecting plate and a bolt. According to the utility model, the span space of the overhanging design is expanded, and the comprehensive technical advantages of high construction quality, high speed, safety and reliability are achieved.

The present invention discloses a method for predicting the evolution of erosion morphology of an ion thruster grid, comprising: obtaining the size of a single-hole beam downstream of an accelerating grid through experimental measurement; selecting a pair of screen grids and an accelerating grid hole as objects of numerical simulation research; obtaining an initial plasma density upstream of the screen grid based on a relationship between beam current and plasma density upstream of the screen grid; obtaining a Debye length based on upstream plasma density calculation and selecting a size of a simulation grid; obtaining a neutral gas density at each grid node in a simulation area based on a neutral gas collision model; establishing a grid corrosion morphology evolution model, starting beam calculation, simulating and obtaining the single-hole beam size, performing feedback adjustment based on experimental values, and determining a final upstream ion density; processing the collision process between ions and the grid, starting corrosion calculation, and obtaining an accurate grid corrosion rate; reducing grid mass based on the corrosion rate, eliminating grid nodes, and realizing a change in the grid morphology.

A laser apparatus includes an oscillation stage laser configured to generate and output a pulse laser beam, and an amplification stage laser configured to amplify the pulse laser beam output from the oscillation stage laser. The amplification stage laser includes an optical resonator configured to be a transfer optical system, a first discharge electrode pair and a second discharge electrode pair separated from each other in a first direction intersecting an optical path of the optical resonator, the first and second discharge electrode pairs being disposed across the optical path and configured to alternately discharge, and a slit disposed at a transfer position of the transfer optical system and configured to limit a beam size in a second direction orthogonal to the first direction of the pulse laser beam amplified by discharge of one of the first and second discharge electrode pairs.

A lighting assembly for a luminaire includes a circuit board and a light source disposed on the circuit board. A heat sink is coupled to the circuit board. A solid integrated optical array is coupled to the circuit board. The solid integrated optical array includes a solid optical lens. Each solid optical lens is disposed over a corresponding one of the light sources. Each solid optical lens includes a light guiding body defining a total internal reflection lens and an external light guiding surface. Each solid optical lens is adapted to pass a light beam in a predefined direction to form a light beam pattern. Each solid optical lens is configured to maintain a base beam size of light therethrough, wherein the base beam size is less than 11 degrees. A bezel is disposed adjacent to the at least one solid integrated optical array and coupled to the heat sink.

The invention discloses an electron beam deposition energy prediction method and system based on a convolution prediction model, and the method comprises the steps: S1, collecting two-dimensional plane deposition energy data of beam spots of various sizes through Monte Carlo simulation, carrying out the abnormal data recognition and abnormal data replacement, and obtaining the final two-dimensional plane deposition energy data; s2, obtaining a binarized graph function corresponding to each beam spot, and performing convolution with the binarized graph function corresponding to each beam spot by using a sedimentary energy density function to obtain a corresponding convolution prediction model; s3, fitting the deposition energy density function based on the final two-dimensional plane deposition energy data to obtain an optimal fitting value of each parameter; and S4, substituting the optimal fitting value of each parameter into the deposition energy convolution prediction model corresponding to the beam spot in any shape so as to realize deposition energy prediction of the beam spot in any shape. The method has the advantages of high prediction precision, small calculation amount and the like.

A surface emitting laser for example, a photonic crystal surface emitting laser (PCSEL) 14 (see Figure 2a) comprises an active layer within which radiation is generated and coupled into a photonic crystal layer 2a (see Figure 2b) is provided. The photonic crystal layer 2a comprises a first region within which is located a first array of scattering centres 7 configured to define fundamental lattice vectors 8a and 8b (see Figure 2b) of the photonic crystal layer 2a and to redirect a portion of the optically coupled light to form an output field and a second region configured to confine coupled light within the photonic crystal layer 2a. The first region comprises an area that is less than half of an area of the photonic crystal layer 2a. As such, the first region acts to control the output coupling, selecting the output beam size and ensuring precise output coupling of the emitted beam while the second region of the photonic crystal layer 2a facilitates an increase in coupling strength within the photonic crystal layer 2a, thus maintaining the output powers.

A Quantum Field Noise Source and Secure Information Transfer system for realizing a true random signal generator, without the need for a decipher key. Electrostatically-actuated microelectromechanical beams are disposed above and across a slotline to create parallel-plate cavities. The relationship between the beam-to-slotline distance (d1) and the beam-to-electrode distance (d2) is d1<d2 / 3. The beams have a mechanical resonance frequency, ωc and are driven by a sinusoidal voltage waveform of peak amplitude Vrf and frequency Ωrf, whose DC level is set to a voltage VCntrl and is applied to the beams through a parallel RLC circuit of resonance frequency Ω0. An input signal is applied to the slotline that propagates down the slotline and is influenced by the beams. The random vibrations modulate the signal across the slotline to create white noise that is decipherable by a copy apparatus with the same layout, frequencies, beam sizes, and materials.

An optical path device, an optical detection method and a detection device, the optical path device comprising a side incidence optical path assembly and a lens assembly, the side incidence optical path assembly comprising a detection light source and an expander mirror set, the detection light source providing an incident light beam, the expander mirror set being configured to spread and shape the incident light beam in a first direction to form parallel first direction detection light beams and to spread and shape the incident light beam in a second direction to form non-parallel second direction detection light beams; the first direction detection light beams exiting the lens assembly to form a light spot on a surface to be detected of an object to be detected; the second direction detection light beams non-parallelly entering a surface of the lens assembly and having a beam size, the second direction detection light beams exiting the lens assembly to the surface to be detected and forming the light spot. The present application provides a detection optical path avoiding a central aperture of the lens assembly, which can effectively reduce the risk of lens damage and achieve more reliable and efficient wafer defect detection.

The application discloses a kind of keel beam design method and system of segmented hydroelasticity test model, belong to ship test technical field, wherein, the method includes: simulating the mass characteristics in each segment of the preset test segmented ship model using ordered discrete mass points;According to the ship model, the rectangular hollow section size of the continuous variable cross-section keel beam that simultaneously satisfies the similar vertical bending and horizontal bending inertia moment is determined;Using mass points and section size to establish the finite element connection model of keel beam and mass points;By opening several rectangular openings on the upper surface of keel beam to adjust the torsional stiffness of the whole ship model, then according to the modal analysis results of the finite element connection model, adjust the structure form of the upper surface of keel beam and the wall thickness of keel beam, to obtain the final keel beam size. The method standardizes the design of continuous variable cross-section keel beam that simultaneously satisfies the similar conditions of vertical bending, horizontal bending and torsion, so that the three-dimensional stiffness similar segmented hydroelasticity test model can be accurately and efficiently established based on the keel beam.