76 results about "Light laser" patented technology

The utility model provides a laser housing and a semiconductor spatial light laser, comprising a front panel and a rear panel which are oppositely and vertically arranged, and two side plates used for connecting the front panel and the rear panel, a first area enclosed by the front panel, the rear panel and the two side plates is used for placing the semiconductor spatial light laser, and a second area enclosed by the two side plates is used for placing the semiconductor spatial light laser. Detachably connected cover plates are arranged at the upper end and the lower end of the first area; and a fixing assembly for mounting the laser housing on the semiconductor device, the fixing assembly being disposed on any one or more of the front panel, the rear panel, and the two side plates. According to the utility model, the independent fixing assembly is arranged, and a proper laser fixing position is selected according to the internal structures of different semiconductor devices, so that the semiconductor devices are convenient to assemble and replace; the water cooling assembly is fixed through the front panel and the rear panel of the laser shell, and then the upper and lower layers of light source modules are installed, so that the double-layer semiconductor light source modules have supporting areas in the assembling process, and optical fibers are prevented from being bent.

The utility model discloses a drainage tube fixing device capable of measuring the lifting angle of a bedside, which belongs to the field of medical instruments and comprises a protractor and a ruler strip, the back of the protractor is fixedly connected with a bed board fixing component, the front of the protractor is provided with a sliding groove, and the protractor is movably connected with the ruler strip through a movable shaft. The bottom end of the ruler strip is fixedly connected with the protractor through a locking bolt, and the top end of the ruler strip is fixedly connected with a gradienter; according to the drainage tube fixing device capable of measuring the lifting angle of the bed head, by arranging the protractor, the sliding groove, the ruler strip, the movable shaft, the locking bolt, the gradienter, the movable sleeve, the fixator and the laser lamp, measurement of the lifting angle of the bed head and measurement of the hanging height of the drainage tube can be integrated in the hanging process of the drainage tube; medical staff can conveniently, quickly and accurately find the fixed height of the drainage tube and the lifting angle of the bed head, so that convenience is brought to the work of the medical staff.

The invention relates to the technical field of laser radars, in particular to a vortex light laser radar which comprises a laser emitting unit, an optical receiving unit, an optical modulation unit, a signal detection unit, a signal acquisition and processing unit and a system structure unit. The optical receiving and modulating module divides echo light into a vortex channel and a reference channel through polarization beam splitting. The vortex channel performs orbital angular momentum modulation on echo light by using the receiving modulation unit, converts coherent signal light into annularly distributed vortex light, and filters incoherent noise light through the OAM spatial filtering assembly, thereby realizing spatial separation of signals and noise. The problem of interference of multiple scattered light and background light in a strong scattering medium is effectively solved, the detection signal-to-noise ratio, the maximum detection distance and the target resolution of the laser radar are remarkably improved, and the system is compact in structure, high in engineering practicability and particularly suitable for target detection in underwater, haze and other complex environments.

The invention discloses an electronic fence system and method for a dewatering belt conveyor, and relates to the technical field of industrial safety, and the system comprises a laser fence which is arranged along the boundary of a dangerous area of the dewatering belt conveyor, adopts the design of emitting visible light to form a visual barrier, and is used for monitoring the light shielding degree when a person enters the dangerous area in real time; and the alarm host is electrically connected with the laser fence and is used for receiving the shielding signal of the laser fence and performing grading processing, and the alarm host judges the shielding degree based on a preset shielding area threshold value. According to the electronic fence system and method for the dewatering belt conveyor, real-time monitoring and visual protection of a dangerous area of the dewatering belt conveyor are achieved by deploying the visible light laser fence, the safety of an operation area is effectively improved, the risk level can be accurately judged according to the personnel shielding degree through a graded early warning and intelligent linkage mechanism, and the safety of the operation area is improved. And sound-light alarm or equipment shutdown is automatically triggered, so that the timeliness of safety protection is enhanced.

The utility model relates to a kind of electric door opening purple light inner engraving laser machine equipment, host module adopts purple light laser, can carry out inner engraving;First Z-axis moving mechanism drives engraving platform to lift, to cooperate host module to carry out three-dimensional laser inner engraving;The distance between engraving platform and host module is adjusted by driving engraving platform to lift to carry out Z-axis movement, lifting load is low, and it is not easy to produce deviation, precision is high.Second Z-axis moving mechanism drives door cover to lift, without manually lifting again, improve work efficiency and security.First Z-axis moving mechanism is guided by Z-axis auxiliary guide rail and auxiliary sliding block, and it is strong in stability, and bearing torque is high;Second Z-axis moving mechanism is guided by Z-axis auxiliary skeleton and sliding wheel, and the stability and smoothness of sliding are guaranteed.Even more, exhaust mechanism is arranged in vertical mounting seat, and gas in working area and generated dust are discharged by exhaust space and second exhaust fan by first exhaust fan, so as to avoid dust generated by laser cutting to interfere with laser work.

The application provides a Fe3O4 nanoparticle microscopic imaging detection method based on left and right polarization modulation, belongs to the technical field of photothermal science and detection and signal processing, and solves the problems that current nanometer single particles are difficult to observe and physical and chemical characteristics are difficult to obtain, and specifically comprises the following steps: determining a sample to be detected and preparing a slide sample; starting a computer, a data acquisition card, a lock-in amplifier, a galvanometer controller and a function generator; starting a power supply of an excitation light and a detection light laser and a refrigerator; setting detection parameters, setting laser power / current parameters, setting modulation parameters, and scanning and detecting the sample to be detected; loading a magnetic field; reading signals from the data acquisition card by the computer to obtain a photothermal detection result image; changing different laser parameters and the size of the magnetic field, repeating the above steps, obtaining a circular dichroism and magnetic circular dichroism detection result, measuring a magnetization curve, and monitoring a single nanoparticle magnetic moment flipping process.

The present invention relates to a device for water-in-air generation of droplets comprising a collection vessel, a droplet generation device positioned above the collection vessel comprising a piezoelectric transducer (21) and at least one capillary (22) with a nozzle (23) pointing downwards to the collection vessel; a laser source (30) generating a visible light laser beam (31) with tophat profile, and an imaging setup for continuously monitoring the droplet generation (40). Said device is particularly useful for preparing monodisperse giant unilamellar vesicles of any composition and three-dimensional microenvironment niches for cells or synthetic cells in high throughput.

The invention provides a line structure light laser surface modeling method and a line structure light calibration method, and the line structure light calibration method comprises the following steps: (1.1) collecting data of a calibration laser surface; (1.2) calculating a point cloud center and a covariance matrix based on the collected point cloud data; (1.3) establishing a laser surface coordinate system on the cross section of the laser surface; and step (1.4), converting all point cloud data from a camera system to a laser coordinate system, and fitting a curvilinear equation.

The invention discloses a microchip single-frequency pulse vortex light laser generating device which comprises a pump light source, an output collimating mirror, a focusing lens, an axicon and a microchip resonant cavity which are sequentially and coaxially arranged. A space light beam or an optical fiber coupling light beam emitted by the pump light source is expanded and collimated by the output collimating lens, then converted by the focusing lens and the axicon and shaped into an annular light beam without orbital angular momentum, the annular light beam is irradiated to the microchip resonant cavity, the microchip resonant cavity is moved in the direction of a light path, and the orbital angular momentum is formed. The positions of the microchip resonant cavity and the focus of the focusing lens are adjusted, transverse mode matching in the resonant cavity is achieved, single-mode intracavity oscillation is generated, and a single-frequency pulse vortex beam is output by controlling the inclination angles of the front surface and the rear surface of the microchip resonant cavity.

The utility model relates to electronic component technical field, and disclose an electronic component packaging positioning device, including support plate and drive assembly, drive assembly sets up at the bottom of support plate, the top of drive assembly is provided with the connecting plate, the top pivoted connection of connecting plate has the guide plate, the utility model discloses through setting up the cylinder can drive connecting seat to remove, makes connecting seat drive connecting plate to rotate, makes connecting plate drive guide seat to remove, makes guide plate drive linkage plate to remove, and then makes linkage plate drive clamping plate to remove to reach the effect of clamping positioning when the electronic component packaging, through setting up the push rod can drive the slide plate to slide, makes the slide plate along the locating plate recess to slide, and then the slide plate drive laser emitter and laser lamp to remove to reach the cleaning path of laser lamp to the electronic component and slide adjustment.

The invention discloses a dual-optical-path coaxial transmit-receive system and a laser radar. The transmit-receive system comprises a laser generation module, a silicon optical chip, a short-focus lens, an optical path turning module, a beam splitter prism and a long-focus lens. The silicon optical chip comprises a transmitting waveguide and a receiving waveguide; the laser generation module generates laser; the short-focus lens, the light path turning module, the beam splitter prism and the long-focus lens are sequentially located on a laser light path, the short-focus lens collimates laser passing through the transmitting waveguide, then the laser enters the light path turning module to be subjected to light path turning, and the laser enters the beam splitter prism; the beam splitter prism reflects the laser to an object to be measured; receiving return laser reflected from the object to be measured; and the long-focus lens focuses the returned laser to the receiving waveguide. According to the above structure, through the arrangement of the short-focus lens and the long-focus lens, laser spots are reduced, the light energy density of the spots is enhanced, the light receiving aperture is enlarged, the light receiving energy is improved, it is guaranteed that the emitted laser spots are within the effective receiving view field of the long-focus lens, and the light receiving efficiency and the distance measuring accuracy are improved.

The application discloses a high-order superposition state LG mode generating device and method, relates to the optical and laser technical field, and comprises a pump light source, a first plano-convex lens, a cone lens, a second plano-convex lens and a laser resonant cavity; the laser resonant cavity is composed of a gain medium, a third plano-convex lens and a plane mirror; the pump light source generates laser, the laser is collimated to the cone lens through the first plano-convex lens, the generated Bessel ring-shaped light beam is focused into the laser gain medium through the second plano-convex lens, the gain medium is excited to generate a ring-shaped vortex light beam, after passing through the third plano-convex lens, part of the laser oscillates in the laser resonant cavity, and the high-order superposition state LG mode is output through the plane mirror, namely the output coupling mirror of the laser resonant cavity. The application provides a simple, convenient, compact, low-precision control demand and high-conversion-efficiency solid vortex light laser (high-order superposition state LG mode generating device) to realize the generation of super-high-order number LG vortex light beams.

The utility model relates to the technical field of road and bridge construction, in particular to a road and bridge measuring device. Comprising a frame body assembly and a measuring assembly, the frame body assembly comprises a main body frame, the measuring assembly comprises a positioning sleeve and a sliding rod, a laser lamp is installed at the end, close to a mounting plate, of the positioning plate, a reflective mirror is installed on the inner side of the mounting plate, a compression spring is connected to the top of the sliding rod, and a supporting frame is connected to the lower end of the sliding rod. A linkage rod is connected to the inner wall of the supporting frame, an in-pipe guide rail is arranged on the inner wall of the positioning sleeve, a stabilizing rod is connected to the outer wall of the sliding rod, and a sliding block ball is connected to the end, away from the sliding rod, of the stabilizing rod. When the rolling wheels encounter the protrusions and the recesses in the advancing process, the rolling wheels generate corresponding acting force on the sliding rod, then the sliding rod exerts acting force on the compression spring and enables the compression spring to be stressed and deformed, and the guide rail in the pipe is used for forming a groove body when the sliding block ball slides.

The application provides a road plane intersection point cloud semantic segmentation method, which firstly uses a light laser scanning system to collect point cloud data under multiple points and multiple perspectives; secondly, the point cloud data is registered and spliced to obtain complete point cloud; then, an improved RandLA-Net point cloud semantic segmentation network is constructed by designing a spatial information coding module based on feature similarity, a feature enhancement module based on multi-pooling fusion and a weighted cross-entropy loss function; finally, the improved RandLA-Net point cloud semantic segmentation network is trained, and the trained improved RandLA-Net point cloud semantic segmentation network is used for road plane intersection point cloud segmentation to identify the point cloud category. The method enhances the learning ability of the model to the local features of the point cloud, enriches the spatial features of the input data, and improves the semantic segmentation performance in the road intersection scene.

The invention provides an optical system for reducing optical noise, which is used in the field of laser gas analyzers, and comprises a doublet collimating lens, the doublet collimating lens is arranged on an emission light path of an infrared laser light source, the doublet collimating lens is used for shaping a laser beam emitted by the infrared laser light source, and the doublet collimating lens is used for outputting the shaped laser beam. And the obtained laser collimated light beam is a nearly flat-topped light beam with uniform energy, is freely propagated in the space and is received by a receiving end. According to the invention, a single-piece doublet lens is used as a core optical element, the free light laser beam of TO packaging is shaped to realize laser beam homogenization and collimation, the introduction of intensity noise caused by non-uniform light intensity distribution of the light beam after long-distance light beam transmission is reduced, and the optical interference noise frequency is increased in combination with the long-focal-length light path design, so that the optical interference efficiency is improved. The influence of optical interference noise is reduced through a filtering algorithm. And the structure is compact, the installation and adjustment are simple and convenient, the environmental adaptability is strong, and the application effect of the laser gas analyzer in the gas detection field is realized.

The invention provides laser measurement equipment based on coupler production, and relates to the technical field of measurement equipment, the laser measurement equipment comprises a rack and a mounting rack, the surface of the mounting rack is slidably connected with a moving block, the bottom of the moving block is fixedly connected with a connecting frame, the connecting frame is internally provided with a movable groove, and the movable groove is fixedly connected with the mounting rack. A laser lamp is fixedly connected to the top end of the movable groove, an adjusting mechanism is arranged in the movable groove, a light-transmitting plate is fixedly connected to an end opening of the movable groove, and intelligent matching of the light spot size and the light-transmitting area is achieved through the linkage design of the adjusting mechanism and the light bundling mechanism; the focusing lens is close to the laser lamp to form a large light spot, the light bundling mechanism expands the light transmitting port to improve the scanning efficiency, when small tooth grooves are measured, the focusing lens is far away from the laser lamp to form small light spots, the light bundling mechanism synchronously shrinks the light transmitting port to lock the light spots, vibration offset is avoided, and the measurement accuracy of a complex structure is greatly improved.

The invention discloses a passivation method of a back contact cell, the back contact cell and a photovoltaic module. The passivation method of the back contact battery comprises the steps that ultraviolet laser is adopted for conducting laser treatment on a P area and an N area on the back face of the back contact battery, the power density of the ultraviolet laser acting on the P area is higher than that of the ultraviolet laser acting on the N area, and / or the power density of the ultraviolet laser acting on the N area is lower than that of the P area. The processing time of the ultraviolet laser acting on the P region is longer than the processing time of the ultraviolet laser acting on the N region; and carrying out laser treatment on the back surface of the back contact battery by adopting visible laser. Therefore, the back surface of the back contact battery is subjected to zoning treatment by adopting ultraviolet laser, the hydrogen passivation effect of the N region and the P region can be improved, impurities and defects are reduced, the carrier recombination rate is reduced, and a defect structure caused by excessive hydrogen sources is not easy to generate; compared with ultraviolet laser, the penetration depth of the visible laser is deeper, hydrogen passivation treatment can be performed on the silicon substrate, and the passivation effect of the silicon substrate is improved.

The invention relates to security of quantum key distribution equipment, in particular to a quantum key distribution equipment side channel attack detection device and detection method. Comprising an adjustable attenuator, a first beam splitter, a wavelength division demultiplexer, a synchronous detector, a circulator, a second beam splitter, a delay line, a first Faraday mirror, a second Faraday mirror, a first detector, a second detector, a coincidence counter, a data control module and upper computer software. According to the technical scheme provided by the invention, only the light output port and the quantum light laser of the quantum key distribution equipment need to be used, and other optical interfaces in the equipment do not need to be used; the device can detect consistency under multiple dimensions at the same time, is high in coverage capability, can carry out side channel attack detection in a normal working mode, effectively improves the safety and practicability of quantum key distribution equipment, and is suitable for popularization and application. The defect that multi-dimensional side channel attack detection is difficult to carry out on integrated equipment in a normal working mode in the prior art can be overcome.

The invention discloses a Raman grating magneto-optical trap gravimeter realized by pulse laser. The Raman grating magneto-optical trap gravimeter comprises a central controller, a coherent laser generator and a grating magneto-optical trap gravimeter, the central controller controls the coherent laser generator and is used for outputting control voltage so as to control operation of the seed light laser, the optical fiber electro-optical modulator, the pulse laser generator, the multi-stage optical fiber amplifier and the optical fiber acousto-optic modulator. The seed light laser outputs continuous laser to be injected into the optical fiber electro-optical modulator; the optical fiber electro-optical modulator adopts a radio frequency signal to modulate input continuous laser and then injects the continuous laser into the pulse laser generator; the pulse laser generator continuously converts laser into short-pulse laser and injects the short-pulse laser into the multi-stage optical fiber amplifier; a frequency doubling crystal after short pulse laser amplification; frequency is increased and converted into the required laser wavelength, the laser wavelength is injected into the optical fiber acousto-optic modulator, and the output of the optical fiber acousto-optic modulator is injected into the grating magneto-optical trap gravimeter. The device is simple in structure and low in cost, and the research, development, production and application cost of the device is reduced.

The application provides a kind of optical path coupling alignment method of external cavity semiconductor laser, comprising the following steps: adjusting the position and angle of optical fiber, so that the optical fiber is coupled with semiconductor laser chip;Adjust the position and angle of collimating lens, so that the invisible laser emitted by semiconductor laser chip is collimated through collimating lens;Place a visible light laser on one side of the semiconductor laser chip, adjust the position and angle of the visible light laser, so that the visible laser emitted by the visible light laser is parallel to the invisible laser;Adjust the position and angle of the mirror, so that the visible laser emitted by the adjusted visible light laser is reflected along the original optical path after the mirror, keep the angle of the mirror unchanged, adjust the position of the mirror, and translate the mirror to the laser optical axis of the semiconductor laser chip.In the specific operation process of coupling alignment of the application, optical method, mechanical method and space geometry are combined, which effectively reduces the alignment difficulty of optical path coupling and improves the operation efficiency.

The invention belongs to the technical field of nuclear magnetic resonance gyroscopes, and relates to a device and a method for measuring longitudinal relaxation time of a miniaturized atomic air chamber. The measuring device comprises: a miniaturized atomic gas cell; the pumping light and light path structure comprises a pumping light laser, a pumping light polarizer, a quarter-wave plate and a light absorption black body which are sequentially arranged along the Z axis; the detection light and light path structure comprises a detection light laser, a detection light polarizer, a half-wave plate, a first right-angle prism reflector, a second right-angle prism reflector, a polarization splitting prism, a first photoelectric detector and a second photoelectric detector which are sequentially arranged along a detection light path; the temperature control system comprises non-magnetic heating devices arranged on the two sides of the miniaturized atomic gas chamber and a temperature control circuit; the magnetic field control system comprises a double-layer magnetic shielding cover, a three-axis magnetic field coil arranged on the outer side of the miniaturized atomic gas chamber, and a magnetic field control circuit; and the signal processing system performs fitting calculation on the longitudinal relaxation time.

This invention discloses a laser frequency conversion system and method based on thermal lensing effect enhancement, belonging to the field of laser technology. The system includes a first pump source, a nonlinear frequency conversion crystal, and a second pump source. The crystal is a rare-earth-doped calcium borate crystal, which absorbs the first pump light to generate a controllable thermal lensing effect. The fundamental wave light emitted from the second pump source is coaxially incident on the crystal with the first pump light. The thermal lens focuses the fundamental wave light, significantly increasing its power density within the crystal. The crystal then utilizes a nonlinear optical effect to efficiently convert the high-power-density fundamental wave light into harmonic light output. This invention solves the problem of low efficiency in traditional extracavity frequency doubling. Through an active focusing mechanism, high-efficiency and high-stability visible light laser output can be achieved with only a lower fundamental wave power, making it particularly suitable for biological detection and medical aesthetics.

The utility model relates to a kind of touchpad module positioning and assembling equipment, belong to touchpad module technical field, including operation platform, support frame, upper positioning component, through type screw rod motor, screw rod main body, lower positioning component and guide slide bar, the side of lower positioning component is provided with first suction tube, the side of upper positioning component is provided with second suction tube, the upper side of operation platform is equipped with suction pump, the upper positioning component includes upper suction plate, the inside of upper suction plate is provided with upper suction disc, the upper side of upper suction plate is provided with first gas mixing box.The utility model is through laser lamp head and alignment scale sticker auxiliary touchpad module's alignment installation operation, reduces installation difficulty, it is favorable to the precision of assembly, through through type screw rod motor and screw rod main body automatically push lower positioning component to move up and be extruded after the touchpad of assembly positioning, it is favorable to the processing efficiency of touchpad module.

A general integrated all-fiber optical control system comprises a reference light laser, a cooling light laser, a probe light laser, a laser beam combining module, a laser beam splitting module, a frequency control module, an optical switch module and a power stabilization module. The lasers output single-frequency laser beams in fiber mode. The laser beam combining module integrates light beams of different frequencies into the same fiber. The laser beam splitting module outputs laser power to different fibers according to the required ratio. The frequency control module adjusts the frequency and power of the laser beams. The optical switch module realizes the required optical switch control. The power stabilization module adjusts the output power in real time to keep it consistent with the reference power. The present application realizes the time sequence control of multiple laser beams based on fiber devices, and has the characteristics of miniaturization, easy integration, easy transportation and stable performance, and is particularly suitable for cold atom experiments based on ground laboratory or special environment (space station, shipborne, satellite borne).

The application provides a laser emission circuit and a laser radar, wherein the laser emission circuit comprises a laser, a first switch circuit, a second switch circuit and a master control circuit; when the laser emission circuit is triggered, the master control circuit first controls the first switch circuit to be turned on and pulled down in the pulse width of a first pulse control signal; after being pulled down, the voltage of a positive power supply end starts to rise; then a first second pulse control signal is outputted, a laser is driven to emit a weak light laser pulse by a first preset voltage with a small voltage, when a return signal is detected, it is determined that a to-be-measured object is a high reflectivity object, at this time, the laser is not driven to emit light any more; when the return signal is not detected, it is determined that the high reflectivity object is not detected; then a second pulse signal is outputted again, the laser is driven to emit a strong light laser pulse by a second preset voltage with a large voltage, normal ranging is performed, the ghost phenomenon caused by strong light irradiation on the high reflectivity object is reduced, and the ranging precision is improved.

The invention discloses precision mold surface finish machining and polishing equipment, and relates to the field of mechanical polishing, the precision mold surface finish machining and polishing equipment comprises a base, a workbench, a polishing mechanism and a spraying mechanism, and further comprises an elastic adjusting mechanism, two laser lamps, a clamping mechanism and a protection mechanism; the workbench is fixedly arranged at the upper end of the base, the rear side of the workbench is fixedly connected with an L-shaped supporting plate, the lower end of the horizontal portion of the L-shaped supporting plate is fixedly connected with a hydraulic rod, the upper end of a first sleeve in the elastic adjusting mechanism is fixedly connected with the lower end of the hydraulic rod, and the polishing mechanism is fixedly arranged at the lower end of a second sleeve in the elastic adjusting mechanism. The two laser lamps are located on the left side and the right side of a grinding disc in the polishing mechanism correspondingly and are flush with the grinding disc, and the upper ends of the two laser lamps are fixedly connected with L-shaped connecting plates correspondingly. A controller does not need to be adopted for programming, the polishing thickness of the workpiece can be conveniently set, the use cost is saved, the working efficiency is improved, and use by people is facilitated.

The invention relates to a wide-width multi-angle visible light laser active and passive integrated aerial survey load. The load comprises a visible light imaging module, a near-infrared imaging module, a laser radar, a positioning and attitude determining system (POS) and a camera body supporting structure. Wherein the passive imaging module comprises a visible light imaging module and a near-infrared imaging module, the visible light imaging module is formed by splicing three cameras, and wide images are synchronously obtained in single flight. The laser radar is an active imaging module, and obtains a large amount of laser point cloud data by actively emitting laser. The laser radar module and the wide imaging module are systematically integrated, the laser radar, the visible light camera and the near-infrared camera work cooperatively under the condition that the field of view is overlapped, laser point cloud data can effectively compensate for image elevation errors, the problem of accuracy loss caused by single-dimensional splicing is solved, multiple application modes are achieved, and the application range is wide. And large-area terrain, landform and urban landscape information can be efficiently obtained.

The utility model discloses a semi-automatic feeding device of a light laser pipe cutting machine, which comprises a feeding module butted to one side of a machine tool, the feeding module comprises a plurality of feeding arms and a reference arm, the feeding arms are arranged in parallel and are perpendicular to the direction of the machine tool, the reference arm is perpendicularly arranged on the rear side of a cutting chuck of the machine tool, and the cutting chuck of the machine tool is connected with the feeding module. The plurality of feeding arms are sequentially distributed between the reference arm and a tail end chuck of the machine tool at intervals; conveying chains which run circularly are carried on the feeding arms, a plurality of limiting blocks which are distributed at equal intervals and used for limiting pipes are carried on the conveying chains, the conveying chains on the multiple feeding arms run synchronously, and the positions of the limiting blocks carried on the conveying chains are the same, so that when the multiple conveying chains run synchronously, the limiting blocks are separated from the limiting blocks. Every two adjacent limiting blocks which are located on the upper surfaces of the multiple feeding arms and located at the same position jointly convey one pipe in a limiting mode. According to the automatic feeding device, the feeding reserve is large, orderly feeding can be achieved, and the feeding failure rate is low; and the feeding period of the pipe is shortened, and the machining efficiency is improved.

The application relates to a yellow light self-frequency-doubling laser, which comprises an excitation source, a laser crystal and a self-frequency-doubling crystal arranged in the light output direction of the excitation source. First excitation light output by the excitation source is incident on the laser crystal, so that the laser crystal outputs second excitation light. The second excitation light is subjected to wavelength conversion by using the laser effect and the frequency doubling effect of the self-frequency-doubling crystal, and yellow light laser output is realized. The application helps to improve the beam quality of the output frequency-doubled light.

The application discloses an intelligent bionic pulse diagnosis device and system for remote traditional Chinese medicine diagnosis and treatment, and belongs to the technical field of traditional Chinese medicine diagnosis and treatment. The intelligent bionic pulse diagnosis device and system for remote traditional Chinese medicine diagnosis and treatment comprises a shell with a cushion at the upper end, three pulse diagnosis devices for detection are horizontally arranged at the upper end of the cushion, a connecting disc is arranged at the upper end of each pulse diagnosis device, and an infrared laser lamp is arranged at the upper end of the connecting disc. The application solves the problem that the existing pulse diagnosis device cannot timely adjust the placement position of the user's hand when performing remote pulse diagnosis, and the adjustment of the pulse diagnosis device is difficult. The rotation of the connecting disc can adjust the positions of the pulse diagnosis device and the infrared laser lamp. The high-brightness red dot displayed by the infrared laser lamp can help the user to know the contact position after the subsequent pulse diagnosis device is pressed down. According to the picture captured by the camera, the position of the infrared laser lamp is directly adjusted, and then the position of the pulse diagnosis device is adjusted.