192 results about "Focused beams" patented technology

The invention belongs to the technical field of oil stain detection, and particularly relates to a water surface oil stain detection method, system and equipment, the water surface oil stain detection system comprises a flexible circuit board FPC, an InGaAs infrared sensor, an infrared narrow-band filter and an optical lens, light enters a visible light camera and the optical lens through an external lens, the visible light camera collects visible light images, and the visible light images are transmitted to the InGaAs infrared sensor; the optical lens focuses a light beam, then light with a specific wavelength is screened out through the near-infrared narrow-band filter, the screened light is received by the InGaAs infrared sensor, and the InGaAs infrared sensor is connected with the FPC; the method has the advantages that visible light imaging and short wave infrared spectrum analysis technologies are ingeniously fused, so that the accuracy and the reliability of oil stain detection are remarkably improved. Under the current background that environmental protection and water resource management are increasingly severe, powerful technical support is undoubtedly provided for water surface pollution monitoring.

The invention discloses a diffuse transmission spectrum nondestructive testing method and a portable device for large thick-peel melons and fruits, belongs to the field of nondestructive testing of fruit quality, and provides a real-time and portable internal quality nondestructive testing method and device suitable for the large thick-peel melons and fruits. The system comprises a camera obscura, a shading sucker, an annular shading sponge, a light source module, a spectrum detection module, a collimating lens, an optical fiber, a Raspberry Pi controller and a touch screen. During working, the halogen light source emits a focused light beam to penetrate through melons and fruits, the focused light beam is converted into an electric signal by the spectrum detection module after being scattered and transmitted, and the Raspberry Pi analyzes in real time to obtain and display indexes such as hardness, pH, soluble solids and the like. A 220V industrial power supply is adopted to drive a high-power light source, a cooling fan and a shading sucker structure are combined to reduce environmental interference, and an annular shading sponge ensures that a light path is closed. An integrated portable device of a high-power light source is realized, and the device can be used for on-site rapid nondestructive detection of key quality indexes of large thick-peel melons and fruits such as Hami melons and the like.

The invention discloses a high-beam-quality 193nm ultraviolet laser generating device, and relates to the technical field of laser electronics. The device comprises a 1064nm picosecond pumping laser source and a 2053nm picosecond laser source which are used for generating pumping laser; the frequency doubling crystal, the frequency quadruplicating crystal, the 213nm sum frequency crystal and the 193nm sum frequency crystal are used for nonlinear frequency conversion; the temperature control device is used for controlling the temperature of the crystal; the dichroic mirror is used for separating the laser; the cylindrical mirror is used for beam shaping; and a lens for focusing the light beam. According to the device, a 1064nm light source is used for performing quadruplicated frequency to obtain 213nm laser, and the obtained 213nm laser and 2053nm laser are input into a nonlinear frequency conversion module to obtain 193nm laser. The device ensures high power of laser output, has good stability and excellent light beam quality, is simple in structure, and is suitable for the fields of photoetching, spectroscopy, medicine and the like.

An optoelectronic apparatus includes an array of emitters configured to emit beams of optical radiation. Refractive optics focus the emitted beams with a first optical power. An optical metasurface splits the focused beams to form a pattern of spots and applies a vergence to the spots with a second optical power so as to project the pattern of spots toward a target.

Anti-deviation intelligent welding equipment for metal parts belongs to the technical field of metal part welding and comprises a base, a fixing plate and a metal pipe body, supporting frames are symmetrically and fixedly connected to the top of the base at equal intervals, and supporting rings are rotationally connected to the sides, close to each other, of the two supporting frames in each set. During welding, a laser head focuses a light beam to heat and melt a seam to form a molten pool, metallurgical bonding is achieved, aiming at an annular seam, the laser head synchronously moves along with rotation of a pipe body, parameters are adjusted to guarantee welding seam forming, meanwhile, a welding path is formed through a symmetrical attaching rod and a fixing cylinder, the laser head dynamically moves, and the welding position is kept at the center of the seam; and the rotating handle can be rotated to drive the scraping plate to scrape an oxide layer and burrs on the surface of the joint, laser energy waste is avoided, efficiency is guaranteed, in addition, the protruding block is matched with the reciprocating rod, the air blowing cylinder cleans dust and residues on the joint, and welding quality and cleaning efficiency are guaranteed.

A sliding cover for a liquid delivery device, such as a cap (100) for a pen injector (200), incorporates a set of sensors including an optical sensor (110) with an output which changes during uncapping or capping motions on passing of a plunger (220) of the pen injector. This output is used together with a position sensor (120) to determine the position of the plunger along a cylinder (210) of the liquid delivery device. By monitoring changes in the plunger position, the quantity of dosages delivered by the liquid delivery device can be determined, displayed, stored and / or transmitted to an external device for further data processing or storage. Preferred implementations of the invention employ optical sensors with a converging beam (115), and / or position sensors employing linear potentiometer strips (132).

A method of producing cytopathologic cell samples, the method including insonating a target tissue by ultrasound energy with a focused beam at that generates shear waves within the tissue. A method of producing cytopathologic cell samples, the method including insonating a target tissue by ultrasound energy at a first intensity level during a first period, insonating the target tissue by ultrasound energy at a second intensity level during a second period, wherein the first intensity level is higher than the second intensity level. Related apparatus and methods are also described.

The invention relates to the technical field of laser, and discloses a high-power infrared spatial optical fiber coupling device and method, and the device comprises a light beam stabilizing system, a power adjusting unit, a core coupling light path, and an optical fiber fixing unit. The light beam stabilizing system is used for carrying out pointing stabilization and collimation processing on the incident high-power infrared space light; the power adjusting unit is arranged on the light output side of the light beam stabilizing system, the light input end of the power adjusting unit corresponds to the light output end of the light beam stabilizing system, and the power adjusting unit is used for receiving the stabilized light beam output by the light beam stabilizing system and adjusting the laser power entering the core coupling light path; the core coupling light path is used for accurately focusing the stabilized light beam to the end face of the optical fiber; the optical fiber fixing unit is arranged on the output end side of the core coupling light path and used for stably clamping an optical fiber and enabling the end face of the optical fiber to be located at a focusing light spot; the optical fiber fixing unit is arranged on the light output side of the core coupling light path and used for clamping the optical fiber to be coupled so as to receive the focused light beam output by the core coupling light path.

The invention provides a measurement system, method, device and equipment, a medium and a product, and belongs to the technical field of optics. The system comprises a beam expander used for generating a first transmission light beam and a first reflection light beam when a light beam after beam expansion reaches a tested sample at a first preset position; a beam compressor; the receiver is positioned at a first position and is used for receiving the first transmission light beam to generate a first interferogram of the detected sample; the receiver is positioned at a second position and is used for receiving the first reflected light beam to generate a second interferogram of the detected sample; the first microscope objective is used for generating a second transmission light beam and a second reflection light beam by enabling the focused light beam to reach a detected sample at a second preset position; a second microscope objective; the receiver is positioned at a third position and is used for receiving the second transmission light beam to generate a third interference pattern of the detected sample; and the receiver at the second position is also used for receiving the second reflected light beam to generate a fourth interferogram of the tested sample.

The invention provides an optical system calibration method and system, and the method comprises the steps: carrying out the focal plane calibration through detecting the position of a focusing beam segment focus of a focus adjustment assembly on an optical axis under different combined focal lengths under the condition that the incident light of the focus adjustment assembly is parallel light; and under the condition that the focal plane calibration is completed, the light spot size is calibrated through the light spot adjusting assembly. According to the invention, by providing a mode of combining the light spot adjusting assembly with the focus adjusting assembly to adjust the light spot size and the focus, equal-proportion adjustment of the light spots in a certain size range of the focal plane is realized, and the precision of the light spots is improved while the consistency of the focal plane under different combined focal lengths of the focus adjusting assembly is realized; and the optical system can meet the high-precision requirement occasion. Besides, a sectional calibration mode is adopted, so that the problems of incapability of finding a focal plane position by a light spot adjusting assembly and difficulty in correction caused by superposition of a plurality of variables in integrated correction of the whole set of light path system can be avoided, and the calibration difficulty is reduced.

A laser scribing method for perovskite thin-film solar cells is provided, in which a linearly polarized Gaussian beam is emitted by a laser, and converted into a circularly polarized beam through a quarter-wave plate. The circularly polarized beam is expanded to a target diameter by a beam expander system to obtain a target expanded beam. The target expanded beam is adjusted by an optical path adjustment system to enter a diffractive optical element (DOE) shaping module for beam shaping to obtain a shaped beam. The shaped beam is focused by an optical focusing module to obtain a focused beam with the focus on a surface film of a to-be-processed product, and the to-be-processed product is moved such that a groove is scribed thereon. A laser scribing device is also provided.

A battery cell inspection system and method are disclosed. The system performs an ultrasound interrogation session of a cell by directing ultrasound at different frequencies at target points across surfaces of the cell, detecting ultrasound at the target points that is transmitted through and / or reflected from the cell, generating response signals from the detected ultrasound at each of the target points, and determining characteristics of the cell including defects, anomalies and cell capacity based upon the response signals. During the session, the transducers are not in contact with the surfaces of the cell, and the transducers and the cell are immersed in an electrically non-conductive fluid. The system can also configure the ultrasound transmitted at the target points into focused beams. Alternatively, an inspection system can be configured to determine characteristics of a cell during a formation stage of the cell.

The invention belongs to the technical field of optical microscopic imaging, and relates to a laser focal depth characteristic-based confocal microscopic imaging system, which comprises a laser emission module, a collimating lens group, a light beam modulation module, a space scanning module and an information receiving module, and is characterized in that the light beam modulation module comprises a polarization beam splitter and a quarter-wave plate; the space scanning module comprises a biaxial galvanometer and a 4f telecentric light path assembly. The laser emission module, the collimating lens group, the polarization beam splitter 4 and the quarter-wave plate are coaxially arranged. The double-shaft galvanometer is obliquely arranged relative to the quarter-wave plate; the 4f telecentric light path assembly is configured to form a preset focal depth range by utilizing the focal depth characteristic of incident laser and scan a sample in the preset focal depth range by utilizing a focused light beam emitted by the 4f telecentric light path assembly; and the information receiving module is arranged beside the polarization beam splitter. According to the invention, the mechanical motion dependence of the optical imaging system is eliminated, the structural complexity of the optical imaging system is reduced, and the resolution and efficiency of laser scanning imaging are improved.

A scanning probe microscope and method of operating a scanning probe microscope includes selecting a preferred focal position of a focused optical beam on a probe of the scanning probe microscope by adjusting a focal position of a focused optical beam on the probe relative to a tip of the probe and then measuring at least one of a response of the probe and optical radiation scattered from the probe as a function of the position of the focused optical beam. The preferred focal position of the focused optical beam on the probe is based on the measurement of at least one of the response of the probe and optical radiation scattered from the probe.

High speed, accurate, scalable, and dimension-insensitive additive manufacturing of a Three-Dimensional (3D) object may use incrementally solidifying light-sensitive resin layers. A new layer is formed by supplying the resin liquid via a cavity in the formed 3D object, and curing the supplied resin by a focused light beam, such as a laser beam. The added layers are formed by supplying, 2024 / 184876 using a pump, the light-cured resin fluid to one or more bottom openings to be output from the top opening (or to multiple openings) via a vertical cavity (or multiple cavities) of the 3D object. The curing is by focusing a light beam to the area of the resin output from the top opening, while keeping the top opening non-cured, so that resin can be passed via the cavity. Such 3D printing may be directly applied to any surface, such as a floor, wall, wing structure, or machined part.

Disclosed in the present invention are a conical optical illumination-based reflective scanning super-resolution optical microscopy system and method. The system comprises a sample displacement module, an optical microscopic imaging module, an annular focused beam generation module, a beam scanning module, a super-resolution focused illumination and collection module, a super-resolution optical imaging module and a computer. By means of using the advantages of annular focused beam illumination, high focusing efficiency of traditional lenses, and high beam scanning speed, high-efficiency super-resolution focused illumination with an extended depth of focus is achieved, and further traditional optical lenses can be used to achieve fast super-resolution optical microscopic imaging; fast label-free far-field super-resolution two-dimensional microscopic imaging is implemented by means of two-dimensional beam scanning; by means of performing label-free far-field super-resolution two-dimensional microscopic imaging on samples at different axial positions, super-resolution two-dimensional microscopic images of different cross sections of samples are obtained, thereby achieving three-dimensional tomography. The present invention can be applied to fast label-free super-resolution microscopic imaging of biological samples, and can also be applied to other fields such as industrial super-resolution microscopic inspection.

The invention discloses a low-power laser-assisted hydrogen reduction ironmaking method, which comprises the following steps: irradiating an iron-containing ore sample at an angle of 10-90 degrees by using low-power 200W laser or solar focusing light beams under a vacuum condition, and carrying out thermal reduction to generate elemental Fe and other compounds. 4-6 red copper blocks are placed above the sample table to collect volatile matters, and a circulating water cooling device is placed below the sample table to cool and collect smelted samples. And finally, metal Fe is obtained through magnetic separation, and the green metallurgy purpose of zero carbon emission in the whole ironmaking process is achieved. The zero-carbon-emission low-power laser ironmaking method under the atmosphere condition is simple, easy to operate and environmentally friendly, has the potential of large-scale continuous production, and is expected to be applied to the technical field of intelligent, clean and efficient ironmaking in the future.

An optical module includes: a diffraction grating configured to rotate and focus a beam, which is incident thereon from an incident path, onto a Fourier plane, a digital micromirror array (DMD) configured to assign a frequency for each wavelength of the focused beam received at the Fourier plane, and perform a Fourier transform for each frequency, and a first optical fiber configured to receive a beam that is reflected back from the DMD back and the diffraction grating, and along the incident path.

An additive manufacturing system may include an additive manufacturing machine and a control system. The additive manufacturing machine may include one or more irradiation devices respectively including a beam source configured to emit an energy beam, an optical assembly that has one or more optical elements configured to focus the energy beam emitted by the beam source, a beam source sensor configured to determine a beam source sensor value from a source measurement beam representative of the energy beam prior to the energy beam passing through one or more optical elements of the optical assembly, and an optics sensor configured to determine an optics sensor value from an optics measurement beam representative of the energy beam downstream from the one or more optical elements of the optical assembly. The control system may include an irradiation control module configured to provide one or more control commands to the additive manufacturing machine based at least in part on the beam source sensor value and / or based at least in part on the optics sensor value.

A laser machining head includes: a first lens group in which laser light diverging from a light emitter enters and is concentrated; a second lens group to which the laser light having passed through the first lens group propagates; a third lens group that constitutes a lens group in which the laser light having passed through the second lens group propagates and forms an image of the light emitter; a fourth lens group in which the laser light having passed through the third lens group enters and is concentrated; a light flux conversion optical element that is disposed on an optical axis between the first lens group and the second lens unit and converts a beam mode of the laser light; a first mover that moves the first lens group in an optical axis direction; and a second mover that moves the third lens group in an optical axis direction.

Examples of a laser additive manufacturing system are described. The system comprises a laser configured to generate a laser beam, a fiber optic coupled to the laser to transmit the laser beam to a laser optic head that is coupled to the fiber optic and comprises a focus lens to focus the light beam. The laser optic head is configured to slide along a sliding mechanism in X-direction. A powder feeder is used to continuously move in Y-direction and dispense an uniform layer of powdered material onto a powder bad that is positioned on a build plate of the building chamber. The build plate is configured to move in Z-direction. The light beam generated by the laser is focused using the laser optic head onto a small region of the powder bed where the powdered material is positioned producing small volumes of melt pools that are then cooled and a new layer of powdered material is dispensed over it.

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.

The utility model relates to the field of light source packaging, in particular to a curved-surface fluorescent ceramic light source. The light source comprises a substrate, a blue light chip and fluorescent ceramic. The blue light chip is fixed on the substrate; the fluorescent ceramic is arranged above the blue light chip and is connected to the substrate; the blue light chip is used for exciting the fluorescent ceramic to emit white light; the fluorescent ceramic comprises a curved surface structure; and the fluorescent ceramic is used for converging the white light. The luminous body of the light source is prepared from the fluorescent ceramic, the luminous body and a light condensing body are designed into a whole, an additional light source outer cover is avoided, the structure of the light source is simplified, and meanwhile the light source has the advantages that the surface of the light source is resistant to abrasion and scratch, the refractive index is high, and the light source is convenient to clean. And the method has a wide application prospect in severe industrial scenes. According to the packaging method, the light emitting functionality of the fluorophor is met, meanwhile, the functions of protecting the light source chip and focusing the light beam are achieved, and particularly, the curved-surface fluorescent ceramic has the high refractive index, light condensation can be better achieved, and scattering is low.

The invention relates to a detection device capable of quickly switching focal length, comprising a light emitting unit which continuously emits initial light beams with different colors; wherein the emergent points of the initial light beams with different colors are different; a rotating unit rotating the light emitting unit to change a color of a selected light beam formed by the light emitting unit passing through the rotating unit; the focusing unit is used for focusing the selected light beam to obtain a focused light beam, so that the focused light beam irradiates the surface of the measured object to form an information light beam; and the camera receives the information light beam and detects to obtain a surface image of the detected object. By adopting the detection device capable of rapidly switching the focal length, the detection light source can be rapidly switched under the condition of low cost, and good detection precision is kept.

The present invention discloses a distortion correction system and method for a laser self-spatial five-axis galvanometer, which includes an offset module, a beam expansion module, a scanning module and a focusing module; each module is sequentially installed inside the device at a certain distance, and the movement of the optical lens is used to focus the end laser beam on the working plane of the workbench to realize the movement in the five-dimensional space, that is, to realize the scanning in the X and Y dimensions, the movement of the focus in the Z dimension, and the deflection in the α and β dimensions; the offset module is used to realize the beam deviating from the optical axis by a certain distance in the X and Y dimensions; the beam expansion module is used to expand the beam diameter; the scanning module realizes the scanning of the beam in the XY plane; the focusing module is used to focus the beam and ensure that the inclination angle of the focused beam is small enough. The present invention adopts indirect correction of the processed pattern, designs different correction patterns for different dimensions of the beam movement, is convenient to operate and has low cost.

The invention provides a light generating system (1000) comprising a first light generating device (110), a second light generating device (120), a luminescent material (200), a diffuser assembly (1700), optics (500), and a light exit (1090), wherein: (A) the first light generating device (110) is configured to generate first device light (111), and the second light generating device (120) is configured to generate second device light (121); (B) the luminescent material (200) is configured to convert at least part of second device light (121) into luminescent material light (201); (C) the diffuser assembly (1700) comprises a diffuser (710), a condenser optical element (730), and a collecting optical element (740); (D) the condenser optical element (730) is configured to provide a focused beam (731) comprising first device light (111) in an optical path to the diffuser (710); (E) the diffuser (710) is configured to provide a diffused beam (711) comprising first device light (111) in an optical path to the collecting optical element (740), wherein an optical axis (Oi) of the focused beam (731) comprising first device light (111) and an optical axis (OR) of the diffused beam (711) comprising first device light (111) have a mutual angle (β), wherein the mutual angle (β) is selected from the range of 80°≤β≤140°; (F) the collecting optical element (740) is configured in a light-receiving relationship with the diffuser (710); wherein the collecting optical element (740) is configured to provide a collimated diffused beam (741) comprising first device light (111) in an optical path to the light exit (1090); (G) the optics (500) comprise one or more redirection optical elements (505) configured to direct one or more of: (i) the first device light (111) in an optical path to the diffuser assembly (1700), (ii) the collimated diffused beam (741) comprising first device light (111) in an optical path to the light exit (1090), (iii) the second device light (121) in an optical path to the luminescent material (200), and (iv) the luminescent material light (201) in an optical path to the light exit (1090); and (H) the light generating system (1000) is configured to generate in a first operational mode of the light generating system (1000) system light (1001) comprising at least part of the collimated diffused beam (741) comprising first device light (111) and at least part of the luminescent material light.

The invention relates to the technical field of crystallization control, and discloses a programmed cooling crystallization kettle and method capable of regulating and controlling sugar alcohol crystal granularity, and the method comprises the following steps: constructing a basic nonlinear cooling model in advance, and respectively collecting real-time torque and actual average chord length of the crystal by using a torque sensor and a focused light beam reflection measurement probe in the crystallization process; and the control system calculates the cooling rate correction according to the granularity deviation through a PID algorithm, calculates a rheology correction factor according to the torque change, and performs attenuation treatment on the sum of the basic rate and the correction by using the rheology correction factor to obtain a final cooling instruction to adjust the temperature in the kettle. Through dual feedback of coupling granularity and rheology, the contradiction between crystal growth and mass transfer resistance under a high-viscosity system is solved, the inclusion amount of the mother liquor is remarkably reduced while the target particle size is realized, and the purity and uniformity of the product are improved.

The utility model provides an optical coupling device and an imaging system. The optical coupling device comprises a light shaping lens assembly which is optically coupled with an emergent end of a light source and is used for shaping and expanding emergent light from the emergent end into parallel light; and the focus-adjustable lens is arranged on one side, far away from the emergent end, of the light shaping lens assembly and is used for focusing the parallel light into a focused light beam. In this way, the light emitted by the light source can be converted into different focused light beams to adapt to optical fibers of different specifications. When the lens is applied to an imaging system, the focus-adjustable lens can be adjusted to be matched with different internal light path optical systems. Therefore, the reusability of the optical coupling device is higher, and the overall structure of the imaging system is simpler and lighter.

A laboratory-based 3D scanning X-ray scanning Laue microdiffraction system and method for crystal material characterization, comprising: focusing optics, a sample located at a distance from the focusing optics, a laboratory X-ray source, a stage to translate and rotate the sample, a detector arranged to detect a Laue diffraction pattern of diffracted X-rays. The method comprises scanning each layer of the sample by translating the sample at different rotations relative to the focused beam to illuminate each voxel in the layer in more than one rotation, and indexing each voxel in the layer using recorded Laue diffraction patterns in different rotations. By repeating the translation and rotation for different layers of the sample, a 3D image of the sample grain structure is reconstructed.

A method of producing cytopathologic cell samples, the method including insonating a target tissue by ultrasound energy with a focused beam at that generates shear waves within the tissue. A method of producing cytopathologic cell samples, the method including insonating a target tissue by ultrasound energy at a first intensity level during a first period, insonating the target tissue by ultrasound energy at a second intensity level during a second period, wherein the first intensity level is higher than the second intensity level. Related apparatus and methods are also described.