295 results about "Beam shape" patented technology

A broadband omni-directional bicone antenna. The antenna can comprise conductive surfaces of conical voids provided within a solid dielectric structure. The outside surface of the solid structure can support a radio frequency (RF) lens geometry operable for beam forming. The beam forming can modify the elevation pattern of the electromagnetic radiation from the bicone antenna. The solid dielectric structure may be machined or molded from a single piece of material. The conical voids provided within the solid structure can be metallized to provide conductive bicone radiators. The outer surface beam shaping lenses can be zoned or continuous and can provide elevation patterns with increased gain, cosecant squared falloff, or various other patterns. The beam shaping lens may be formed from any low-loss dielectric. Alternatively, the lens may be formed from a less dense material such as dielectric foam that can support radial conductive beam forming vanes.

The invention relates to the technical field of quantum sensing and ocean detection, and discloses an ocean magnetic field sensor based on an NV color center and an ocean magnetic field measuring method.The sensor comprises a cylindrical pressure-resistant cabin, an optical platform arranged in the pressure-resistant cabin and a main control panel; a laser, a beam shaping unit, a dichroscope, a beam shaping lens group, an objective lens, a diamond NV color center chip, a plano-convex lens I, a band-pass filter and a photoelectric detector are mounted on the optical platform; two microstrip loop antennas are mounted on the outer side of the diamond NV color center chip; an FPGA + ARM dual-core processor, a digital lock-in amplifier and two microwave signal generators are installed on the main control board, and the microwave signal generators are connected with the microstrip loop antenna and achieve electromagnetic coupling with the diamond NV color center chip. The invention has the advantages of high sensitivity, good long-term stability and strong anti-interference capability, and provides a new generation of quantum sensing solution for applications such as ocean geomagnetic monitoring and underwater target identification.

The invention provides a directional network adaptive radiation control method and system, and relates to the technical field of wireless network control, and the method comprises the steps: obtaining real-time high-frequency motion data, relative distance data and environment interference intensity data of a wireless network; motion state continuous quantization is carried out according to the real-time high-frequency motion data, and motion characteristic quantities are constructed and obtained; performing multi-step track prediction processing according to the motion characteristic quantity, and outputting a track prediction sequence; performing prediction reliability evaluation according to the trajectory prediction sequence, and generating a trajectory uncertainty index; generating a radiation control signal according to the motion characteristic quantity and the trajectory uncertainty index to obtain the radiation control signal; and performing beam forming and power adaptive processing according to the radiation control signal and the real-time relative distance data to obtain a final beam form and power parameter combination. According to the method, the communication quality and the anti-interference capability of the directional network in a complex environment are remarkably improved.

A battery assembly for an electric vehicle includes two spaced-apart longitudinal profiles extending in a length direction L, interconnected to a front and a rear transverse beam. At least three beam shaped battery modules are interconnected along their longitudinal sides via a plate-shaped interconnecting member, and extend in the length direction, to be attached to an inner surface of the front transverse beam via a bracket. Each battery module is provided with cooling channels extending in the length direction L and having an inlet situated between a transverse end face of the module and the inner surface of the front transverse beam. A water inlet duct extends from an external side the front transverse beam in a central area situated between the brackets, for connecting to a coolant inlet of the central battery module.

The invention relates to a measuring arrangement for the interferometric determination of the surface shape of a test object, wherein a test wave generated from electromagnetic radiation and reflected at the test object can be superimposed with a reference wave not reflected at the test object, with a reference element (110, 210, 310, 410) having a reference surface (112, 212, 312, 412) which, in the optical beam path, splits off the reference wave from the test wave before it strikes the test object (120, 220, 320, 420) by reflection, and at least one beam shaping surface (111, 211, 311, 411, 413, 414) located in the optical beam path in front of the reference surface, wherein this beam shaping surface is designed as an aspherical distortion correction surface such that a distortion occurring in a predetermined reference plane of the measuring arrangement is reduced. The invention further relates to a method for manufacturing an optical element for such a measuring arrangement.

The invention belongs to the technical field of laser, and particularly discloses a beam shaping system and method based on prism pair orthogonality and cascade, and the system comprises a single-mode fiber, an aspherical lens, a first prism pair, a first parallel plate, a second prism pair and a second parallel plate which are sequentially arranged along the direction of an optical axis. A Gaussian beam emitted by a single-mode optical fiber is collimated by an aspherical lens to form a parallel beam, the beam is expanded or compressed in the X direction by a first prism pair, the beam is expanded in the Y direction by a second prism pair, and two inclined parallel plates are respectively used for compensating the beam offset in the X / Y direction; according to the invention, the circular Gaussian beam emitted by the single-mode fiber can be shaped, a large strip-shaped collimation light spot with an adjustable length-width ratio from 4: 1 to 20: 1 and a long axis size of 30mm can be realized, and the central positions of the input and output beams in the cross section are ensured to be unchanged.

The invention provides a method for processing a micropore by combining vortex beam shaping femtosecond laser with nanosecond laser, which comprises the following steps of: firstly, taking charge of melting and sublimation of a material by utilizing the high-power characteristic of the nanosecond laser, and then taking charge of finish machining of the hole wall of the processed micropore by utilizing the characteristics of small heat affected zone and high peak energy of the femtosecond laser. Therefore, the problems that the heat affected zone of the hole wall of the micropore machined by nanosecond laser is large, and the machining quality of the hole wall is poor due to material melting and recasting are solved. Therefore, the advantages of high efficiency of nanosecond laser micropore processing, small thermal damage area of femtosecond laser material processing and high micropore pattern quality of the processed micropore are combined, coarse and fine synchronous processing is finally realized, and the processing quality of the micropore wall is improved.

The invention relates to an LD area array beam shaping and homogenizing system based on a microlens array and a use method thereof. The system comprises an LD area array light source, a fast axis pre-correction unit, a two-dimensional shaping and homogenizing unit, a relay lens group and an output coupling unit which are sequentially arranged along a light path, the fast axis pre-correction unit is a single-row micro-cylindrical lens array composed of a plurality of micro-cylindrical lenses; the two-dimensional shaping and homogenizing unit comprises a first microlens array and a second microlens array which are sequentially arranged along the optical axis, and the first microlens array and the second microlens array are both positive spherical microlens arrays arranged in an N * N matrix. According to the LD area array light beam shaping and homogenizing system, light beam segmentation and superposition are achieved, eventually homogenization of output light spots is achieved, and the light spot uniformity reaches 90% or above.

The invention discloses an antenna based on phase-only non-uniform time modulation, which comprises a shaped reflector antenna and a phase-only non-uniform time modulation array feed source, the shaped reflector antenna is used for forming cosecant square beams on a pitching surface, and the phase-only non-uniform time modulation array feed source is formed by a plurality of antenna unit arrays. Each antenna unit is cascaded with a time modulation module, and the phase-only non-uniform time modulation array feed source controls each antenna unit through a phase modulation waveform. According to the invention, a phase-only non-uniform time modulation array antenna is used as a feed source to irradiate and form a reflector antenna, and a cosecant square beam is formed on a pitching surface by using the beam forming capability of the reflector antenna, so that the cosecant square beam is formed on the pitching surface at extremely low cost; a phase-only non-uniform time modulation array feed source is utilized to realize low-sidelobe, high-precision and wide-angle scanning of a fundamental wave beam on an azimuth plane, so that two-dimensional high-gain wide-airspace beam coverage is realized.

The invention relates to the technical field of lasers, and provides a double-gain-medium Q-switched laser and a constant-power pulse width adjusting method.The laser comprises a first pumping source, a second pumping source, an optical fiber beam combiner, a beam shaping system and a laser resonant cavity, the laser resonant cavity comprises a reflecting mirror, a first gain medium, a second gain medium, a polarization selector, a quarter-wave plate, a Q switch and an output mirror which are arranged in sequence; the first gain medium is used for absorbing first pumping light, the second gain medium is used for absorbing second pumping light, and the pumping power of the first pumping source and the pumping power of the second pumping source can be independently controlled. By changing the pumping power of the two pumping sources, real-time adjustment of the pulse width of the laser under the constant output power is achieved, the structure is compact, and control is easy and convenient.

A programmable 3D light beam shaping device based on the beamlet printing technology comprises a laser source, the laser source emits initial laser, the polarization state of the initial laser is adjusted through a rotatable half-wave plate, and then the initial laser is separated into an s component light beam and a p component light beam through a first polarization splitting prism, the p-component light beam enters a Dammann grating after being expanded, and a diffracted light beam containing a plurality of diffraction orders is generated; the diffracted light beam sequentially passes through a second polarization splitting prism, a quarter-wave plate and a first focusing element and is introduced into focal shift by a multi-stage phase plate array, and the spatial light modulator is used for adjusting the angle and position offset of subgroups of the light beam of the sub-beam array to generate a working light beam; the working light beam returns to the second polarization splitting prism through the original light path and enters the working area through the second focusing element, and a three-dimensional light field is generated; according to the device, the three-dimensional irradiance distribution in a machining area can be accurately controlled, so that multi-layer and depth-adjustable energy deposition is realized, and the machining quality, efficiency and consistency are remarkably improved.

A laser beam shaping optical component 10 comprising an array of beam shaping optical elements, each element having an off-centre apex on a surface thereof. The element surfaces may be profiled upon t

The application discloses a three-piece Bessel beam shaping system with a diffraction ring, and belongs to the technical field of laser processing, comprising: a beam shaping mirror, a first collimating mirror and a focusing mirror; the incident surface and the exit surface of the beam shaping mirror are annular planes and annular aspheric surfaces respectively, and are used for shaping a collimated Gaussian beam into a point annular beam with energy gradually decreasing from inside to outside; the incident surface and the exit surface of the first collimating mirror are annular aspheric surfaces and annular planes respectively, and are used for collimating the point annular beam; the incident surface of the focusing mirror is a combination of an axicon surface and a spherical surface, and the exit surface is a plane; the focusing mirror is used for focusing the collimated point annular beam into a Bessel beam with a diffraction ring. The application can significantly improve the focal depth of the Bessel beam in laser processing, and can also effectively remove processing materials such as ink. In addition, the focal depth of the Bessel beam in the application is adjustable, and the adjustment mode is more, the flexibility is higher, and is suitable for different laser processing scenes.

The application discloses a kind of mounting mobile container bottom cross beam shaping device and its working method, belong to container maintenance technical field, including frame, the lower part of both ends of frame is equipped with travelling mechanism respectively, the upper part of both ends of frame is equipped with mounting travelling component respectively, the side of two mounting travelling components that face each other is equipped with opening and closing drive unit respectively, the side of two mounting travelling components that relatively far away is equipped with telescopic drive unit respectively;Mounting travelling component includes clamping wheel drive assembly and deviation correction encoder, clamping wheel drive assembly is set at container bottom longitudinal beam, deviation correction encoder is set in the front of clamping wheel drive assembly along the direction of device travel;The middle frame of two mounting travelling components is slidably installed with vertical correction unit and horizontal correction unit, and vertical correction unit and horizontal correction unit can move along the length direction of frame.The application realizes that shaping can be moved along container bottom longitudinal direction under mounting state, improves operation continuity and shaping efficiency.

Impedance of an inner conductor is reduced. A connector (10) includes an inner conductor (21), an outer conductor (41) surrounding the inner conductor (21), and a dielectric body (61) disposed between the inner conductor (21) and the outer conductor (41). The dielectric body (61) has a cavity (63) extending in a predetermined direction and a locking hole (64) formed in an inner circumferential surface of the cavity (63). The inner conductor (21) has an inner conductor body (23) disposed in the cavity (63) and a locking portion (24) extending from the inner conductor body (23) into the locking hole (64) and locked therewith. The locking portion (24) has a double-supported beam shape extending in the predetermined direction with upper and lower end portions supported by the inner conductor body (23).

The invention relates to the technical field of lasers, in particular to a multi-pass gain laser, which comprises a pumping source, a beam shaping mirror group, a first reflecting mirror, a second reflecting mirror and an output coupling mirror which are arranged in sequence, the laser is transmitted to the output coupling mirror after being subjected to N times of reflection of light path separation between the second reflector and the first reflector; the multi-pass gain laser further comprises a composite gain structure, the composite gain structure comprises a high heat conduction part and a gain part, the gain part comprises N gain crystals which are connected in sequence, and the nth reflected light passes through the nth gain crystal; wherein the high heat conduction part covers the surface of the gain part, and the high heat conduction part is filled in a spacing region between two adjacent gain crystals. According to the invention, the heat dissipation efficiency can be obviously improved, and the laser has high gain and high output stability.

The invention relates to a shimmering powder film and a manufacturing method thereof and an acrylic product, the shimmering powder film comprises a micro-optical functional layer, a reflecting layer, a protective layer, an adhesive layer and a release film, the micro-optical functional layer comprises a base material layer and a microstructure layer connected with the base material layer, and the microstructure layer is formed by imprinting a plurality of micro-lenses on UV light-cured resin; the reflecting layer comprises a resin carrier layer and a plurality of shimmering powder particles, the resin carrier layer is connected with the side, away from the base material layer, of the microstructure layer, and the shimmering powder particles are directionally arranged on the resin carrier layer; the protective layer is connected with one side, away from the microstructure layer, of the substrate layer; one side of the adhesive layer is connected with one side, far away from the substrate layer, of the reflecting layer, and the other side is connected with the release film; according to the shimmering powder film, ambient light is converged to the surfaces of the shimmering powder particles through the micro lenses, reflected light passes through the micro lenses twice from the surfaces of the shimmering powder particles to be amplified and scattered, strong flash beam-shaped scattering is formed, the brightness is remarkably improved, the relatively strong flickering feeling is achieved, and the visual attraction is improved; the manufacturing method of the shimmering powder film is simple and easy to control.

This application provides an optical system and a laser ranging device. The optical system includes: a transmitting unit (210) for emitting a laser beam; a beam shaping unit (220) for shaping the laser beam so that it first converges and then diffuses to form a linear laser; a perforated mirror (230) with the aperture located at the convergence point of the laser beam, the perforated mirror (230) for reflecting the laser echo of the linear laser; and a receiving unit (240) for receiving the laser echo from the perforated mirror (230), which helps to reduce the energy loss of the laser echo during laser reception.

The invention discloses a multi-wavelength composite light spot laser treatment device, which belongs to the field of laser treatment and comprises a laser coupling unit, a quartz shell, a lens group and a base, divergent light beams output by a laser are shaped into annular light beams through a laser coupling unit, and the composite annular light beams with multiple wavelengths are selectively reflected and transmitted through at least one conical lens which is installed in a shell and plated with a dichroic membrane. An axial annular light beam under the reflection wavelength is converted into a circumferential annular light beam, the transmitted axial annular light beam is converted into a collimated light beam through a second conical lens in the base and then is output in the axial direction, and then the axial collimated light beam with the specific wavelength and the circumferential annular light beam with the specific wavelength are output at the same time through the same device. Changes of different wavelengths, different light beam shapes and different light beam directions can be completed through one device, a compound treatment effect can be conveniently played in the laser medical field, and the practicability of a laser medical instrument is improved.

This system is directed to an orbital angular momentum generator which can include an AOD; a beam shaping optic assembly; a log-polar optic; a Fourier lens; and, wherein the orbital angular momentum generator is configured to produce pulse shaping according to the application of a quadratic waveform chirp that corresponds to one or more OAM modes. The system can include an ultrashort pulsed laser; a log-spiral transformation assembly; an AOD; an ellipse generator; a λ / 2 plate; and, wherein the optical system is configured to provide for multiple coherent spiral beams with control of amplitude and relative phase. The system can include an ultraviolet orbital angular momentum generator comprising: a femtosecond pulsed laser; a crystal configured to provide a collinear phase-matching; and can provide a UV OAM source for imaging with high resolution and quantum information. The AOD can be replaced with a scanning mirror and configured to add a linear phase gradient.

In an electromagnetic wave control system (10), beamformers (31 to 36) of a beamformer unit (30) form electromagnetic waves incident from an antenna (20) into different beam shapes. Also, a drive device (40) rotationally drives the beamformer unit (30) to move the beamformers (31 to 36) relative to the antenna (20), and switches the beamformer among the beamformers (31 to 36) on which electromagnetic waves emitted by the antenna (20) are incident. For example, the drive device (40) switches the beamformer on which electromagnetic waves emitted by the antenna (20) are incident from the beamformer (31) to the beamformer (36) among the plurality of beamformers (31 to 36). Such a configuration allows for easy switching of the beam shape because the switching of the beam shape of the electromagnetic waves is performed automatically.

The application discloses an in-situ laser-assisted machining system based on beam shaping, which comprises a laser generating device for generating and emitting a low-power Gaussian laser; a beam shaping device for shaping the Gaussian laser into a focused beam with specific size, shape and energy distribution form according to the thermodynamic performance of the material to be machined, the size of the focused beam being smaller than the height of the cutting edge of the cutting tool from the upper surface thereof; wherein the shaping target of the beam shaping device is determined by simulating the temperature field of the material in the cutting area for different workpiece materials and different spot sizes, shapes and energy distributions, and the uniform temperature field is taken as an evaluation index; and a focal point adjusting device for adjusting the positions of the three degrees of freedom of the beam shaping device, so that the focused beam is passed through the cutting tool and emitted near the cutting edge thereof, and the laser focal plane is coincided with the machining plane. The application can effectively inhibit the surface and subsurface damage of the material to be machined and prolong the service life of the cutting tool.

An optical device (1) for beam shaping with a phase change material, PCM, layer (2) having an amorphous region (3) and a crystalline nanostructure (4) produced therein by laser writing, wherein the crystalline nanostructure (4) exhibits metallic behavior and is formed and arranged within the PCM layer (2) to effect beam shaping of light beams when the optical device (1) is irradiated with the light beams.

The application discloses a kind of for CFRP big depth-diameter ratio array hole multi-pulse width laser composite processing system and method.The system includes: multi-pulse width laser generation module, for outputting two initial laser beams;Beam shaping module, for the optical axis of two initial laser beams is adjusted to coaxial, the initial laser beam is shaped, adjusts the polarization state of initial laser beam, initial laser beam is modulated into two sub laser beams, adjusts the energy distribution of two sub laser beams, two sub laser beams are converted into two mirror image symmetrical distribution in the focusing laser beam array of two sides of the CFRP matrix to be processed.The application can be applicable to the high-efficiency high-precision processing of CFRP big depth-diameter ratio array hole, and nanosecond laser is used to improve processing efficiency, and femtosecond laser is used to effectively inhibit carbon fiber delamination and thermal damage of resin matrix.

The invention discloses a low-cost and high-efficiency selective laser melting additive manufacturing device which comprises a forming cabin, a powder collecting cabin, a laser system, a lens self-cleaning system and the like, and the laser system comprises a kilowatt laser, a beam shaping device and a galvanometer; the power of the kilowatt laser is 1 kW to 10 kW, the beam shaping device can switch Gaussian light spots and annular light spots, and the galvanometer is matched with the light spots to achieve scanning printing. The method has the beneficial effects that the printing efficiency is improved by dozens of times compared with that of a traditional process by matching the kilowatt-level laser with optimized printing parameters and combining a light spot switching strategy, and the production cost is reduced; the lens self-cleaning system realizes automatic cleaning and replacement without shutdown and cabin opening, so that potential quality hazards caused by halfway shutdown are avoided, and argon and gas washing time is saved; the powder spreading machinery monitoring system directly detects powder flow through the infrared photoelectric sensor, so that the phenomenon of false report is avoided, and the powder spreading uniformity is ensured.

An apparatus for generating a defined laser illumination (12) on a work plane (14) has a laser light source (20) that generates a raw laser beam (22). An optical assembly (24) receives the raw laser beam (22) and shapes it into an illumination beam (26) along an optical axis (40). The illumination beam (26) defines a beam direction (28) that intersects the work plane (14). The illumination beam (26) has a beam profile (42; 42') in a region of the work plane (14) that has a major axis (44) perpendicular to the beam direction (28) with a major axis beam width and a minor axis (46) with a minor axis beam width. The optical assembly (24) includes a beam transformer (30) with an exit aperture, a first set of optical elements (56, 60, 62, 64) for beam shaping on the major axis, and a second set of optical elements (34, 36, 38) for beam shaping on the minor axis. The beam transformer (30) widens the raw laser beam (22) on the major axis to generate a widened raw laser beam. The first set of optical elements (56, 60, 62, 64) includes a homogenizer (56) that homogenizes the widened raw laser beam on the major axis. The second set of optical elements (34, 36, 38) includes at least one lens (38) that images the exit aperture of the beam transformer (30) into the work plane. The first set of optical elements (56, 60, 62, 64) generates an intermediate image (66) behind the homogenizer (56) and further implements an imaging optical unit that images the intermediate image (66) into the work plane (14).

Embodiments of the present application provide a kind of multi-focus laser assembly, laser processing device and method.Multi-focus laser assembly includes laser, beam splitting element, beam angle adjustment assembly, first beam shaping assembly, beam converging assembly and objective lens arranged in order along the direction of light path, laser is used to emit laser beam;Beam splitting element is used to split laser beam into predetermined number of sub-beams;Beam angle adjustment assembly includes predetermined number of sub-adjustment unit, each sub-adjustment unit is used to adjust the transmission angle of corresponding sub-beam;First beam shaping assembly includes predetermined number of sub-beam shaping element, each sub-beam shaping element is used to shape the sub-beam adjusted by corresponding sub-adjustment unit;Beam converging assembly is used to converge all sub-beams with preset optical parameters on objective lens, so that all sub-beams form burst point at predetermined number of positions of object after focusing through objective lens.This scheme has relatively high cutting efficiency.

Provided is a beam shaping body (131) for a neutron capture therapy system (100), comprising: a retarder (1312) used for decelerating neutrons of a neutron beam (N) to epithermal neutrons; a reflector (1313) surrounding the retarder (1312) and used for reflecting neutrons deviating from the neutron beam (N) back to the neutron beam (N) so as to improve the intensity of the neutron beam (N); and an epithermal neutron flux enhancer (1316) used for improving an epithermal neutron flux in the neutron beam (N) and provided in the retarder (1312) and / or in the reflector (1313) and / or between the retarder (1312) and the reflector (1313). Further provided is the neutron capture therapy system (100) comprising the beam shaping body (131), the epithermal neutron flux enhancer (1316) is provided in the beam shaping body (131) to increase the epithermal neutron flux in the neutron beam (N), so that the flux and quality of a neutron source are improved.

The invention provides an intelligent safety equipment data transmission method and system based on 5G + private network fusion. Belongs to the technical field of wireless communication and intelligent safety equipment. The method comprises the following steps: preprocessing original data collected by intelligent safety equipment; performing real-time monitoring and feature extraction on the initial multipath channel signal data by using a radio frequency front end of the 5G terminal to obtain antenna channel feature data; on the basis of the extracted antenna channel characteristic data, an antenna initial beam directional diagram is calculated through a phased-array antenna beam forming algorithm; performing spatial filter interference suppression processing on the initial beam directional diagram to obtain antenna optimization beam form data; adjusting the beam form data through a digital beam forming technology to obtain a final antenna beam configuration parameter; and through the high-speed transmission capability of the 5G + private network, the data transmission rate of the intelligent safety equipment is remarkably improved by combining the intelligent bandwidth aggregation and time slot division technology.