12 results about "Infrared laser beam" patented technology

The application discloses a laser-electrolysis-ultrasonic in-situ composite super-precision cutting device for black metal, which comprises a workpiece, a diamond tool head, a tool handle, an ultrasonic vibration unit, a focused infrared laser beam and a metal layer. In the machining process, an electrochemical reaction occurs at the cutting position of the workpiece to generate an oxidation layer with soft and loose quality and weak carbon affinity, thereby avoiding direct contact between the diamond and the black metal matrix material and reducing chemical wear caused by iron-carbon affinity. The application simultaneously introduces inert high-pressure airflow and electrolyte droplet jet flow for continuous heat dissipation and cooling of the machining area, so that the machining process temperature is reduced. On this basis, the focused infrared laser beam introduced in the machining process can accelerate the electrochemical reaction and increase the thickness of the oxidation layer, thereby being beneficial to efficient and low-temperature cutting. The ultrasonic vibration introduced in the machining process can further utilize the ultrasonic cavitation effect to accelerate material removal and removal. Through the ingenious in-situ composite of the laser, the ultrasonic and the electrolysis electric field, high-quality, efficient, super-precision and low-loss machining of the black metal complex component is realized.

A laser apparatus for generating a sub- 190 nanometer laser beam includes a deep-ultraviolet solid-state laser source to generate an initial deep-ultraviolet laser beam, at least one mid-infrared solid-state laser source to generate at least one respective mid-infrared laser beam, and at least one lithium triborate crystal to generate an output deep-ultraviolet laser beam from the initial deep-ultraviolet and mid-infrared laser beams via sum-frequency generation. Each mid-infrared solid- state laser source includes (a) a holmium-, thulium-, or chromium-doped gain crystal or gain fiber or (b) an optically-pumped semiconductor gain material to generate the respective mid-infrared laser beam. The laser apparatus may be configured for continuous-wave and pulsed operation, thus offering versatile solutions for applications requiring DUV laser radiation below 190 nanometers. Advantageously, the present approach relies on lithium triborate. Lithium triborate crystals can be grown with the quality and dimensions needed for industrial applications.

The utility model discloses an infrared laser induction video pile structure, which relates to the technical field of parking lot management equipment and comprises two vertical rods. The two vertical rods are located on the left rear side and the right rear side of the parking space correspondingly. A camera unit is arranged on one vertical rod and is used for collecting an image of one parking space; the two vertical rods are each provided with an infrared laser recognition unit. The infrared laser recognition unit is electrically connected with the camera shooting unit; one infrared laser identification unit corresponds to one infrared laser beam; during working, one end of the infrared laser beam extends to the infrared laser recognition unit, and the other end of the infrared laser beam extends to the front side surface of the parking space. The projections of the two infrared laser beams on the ground form an X-like shape. Compared with the prior art, the video pile structure provided by the utility model can effectively reduce the monitoring power consumption of the video pile and reduce the misjudgment rate of parking space vehicle identification.

The invention relates to a copper and stainless steel composite laser welding process and device and application of the copper and stainless steel composite laser welding process and device. The copper and stainless steel composite laser welding process comprises the steps that after the end faces of a to-be-welded copper part and a to-be-welded stainless steel part are attached and assembled to form an abutted seam, a red-blue composite welding head forms a red-blue composite laser beam through an infrared laser beam and a blue laser beam; firstly, red and blue composite laser beams are used for carrying out pre-laser welding on one or more positions of an abutted seam path, the pre-laser welding comprises spot welding and / or segmented welding, and then the red and blue composite laser beams are used for carrying out laser welding along the abutted seam path to form a welding seam. During pre-laser welding and laser welding, a light spot formed by an infrared laser beam is controlled to swing, the swing center is located on an abutted seam path, and the center of a blue light spot of a blue light laser beam is controlled to deviate to one side, outside the abutted seam path, of the copper part; filling materials such as welding wires and welding rods are not needed, the welding efficiency and quality of copper pieces and stainless steel pieces with the thickness smaller than or equal to 3 mm can be effectively improved, the production cost is remarkably reduced, and a technical path is provided for large-scale mass production of copper and stainless steel vapor chambers and the like.

The invention relates to a double-beam laser nitriding device and method for alloy steel. The double-beam laser nitriding device comprises an integration box, an optical system and an airflow auxiliary system. A movable platform is mounted in the integration box, a heating disc is mounted on the movable platform, and a to-be-nitrided alloy steel substrate is placed on a heater; the optical system comprises a far-infrared laser, a near-infrared laser and a galvanometer, a far-infrared laser beam enters the integration box and is parallel to the surface of the alloy steel substrate to be nitrided, ammonia gas is induced to be subjected to photochemical dissociation to generate nitrogen atoms, and the near-infrared laser beam enters the integration box through the galvanometer and irradiates the surface of the alloy steel substrate to be nitrided, so that the surface temperature of the alloy steel is increased; the ammonia gas is assisted to generate nitrogen atoms on the surface of the alloy steel through photo-thermal dissociation, and the surface nitridation efficiency of the alloy steel substrate is improved through the combined action of the two lasers; the airflow auxiliary system comprises an air pump and a vacuum pump. According to the double-beam laser nitriding method adopted by the invention, the gas nitriding speed of the alloy steel can be greatly increased at a lower environment temperature, and the nitriding efficiency is improved while the nitriding quality is controlled.

This utility model provides a rapid installation and positioning device for elevator guide rails, relating to the field of elevator guide rail installation technology. It includes a workbench, several laser emitting modules, a laser receiving module, and an infrared transmitter. The laser emitting modules are installed around the bottom of the elevator shaft and positioned close to the elevator guide rail installation location. Mounting seats are fixedly installed on both sides of the workbench's upper surface near the elevator guide rail. The spacing is adjusted by moving two sliders within a horizontal frame at the top, and the sliders are moved by rollers until they abut against the inner wall of the elevator shaft, thus fixing the workbench inside the shaft and preventing it from shaking. The laser emitting and receiving modules are used in combination to quickly adjust the position of the infrared transmitter. The infrared laser beam generated by the transmitter is positioned to fit against the surface of the elevator guide rail, facilitating rapid positioning during installation.

The invention relates to an eye tracking device (30, 30a, 30b), with an LFI sensor unit (12) which is configured to emit an infrared laser beam (14) and to record reflection signals (16, 36) of the infrared laser beam (14) and to provide measurement signals for evaluating eye positions and / or eye distances of an eye (18) arranged in the beam path of the infrared laser beam (14), and with an optical unit (20), at least comprising a beam splitter optic (22) which is configured to split and deflect the emitted infrared laser beam (14) into two or more partial beams (24, 26) before it strikes the eye (18) such that each of the partial beams (24, 26) of the infrared laser beam (14) strikes the eye (18) at a different location. It is proposed that the optical unit (20) comprises an LC unit (32) with an LC cell (34) which is provided for interaction with one of the partial beams (24, 26), and wherein the LC cell (34) can be controlled in such a way that the LC cell (34) selectively allows or prevents interference of the respective partial beam (24, 26) with its backscattered reflection signal (16, 36) in the LFI sensor unit (12) by appropriately influencing a polarization of the respective partial beam (24, 26).

The present disclosure relates to an EUV light source device for EUV mask inspection, including: an IR laser source for emitting an IR laser beam; a condenser lens for collecting the IR laser beam emitted from the IR laser source; a collector mirror having a hole formed at the center thereof in such a way as to pass the IR laser beam collected onto the condenser lens therethrough, the collector mirror being adapted to collect EUV light reflected onto a liquid target if the IR laser beam reacts with the liquid target to produce the EUV light; a target feeder for continuously feeding the liquid target to allow the IR laser beam passing through the hole formed on the collector mirror to react with the liquid target; and a plurality of heaters located on the collector mirror.

The invention relates to an eye tracking device (30, 30a, 30b), having an LFI sensor unit (12), which is configured to output an infrared laser beam (14), receive reflection signals (16, 36) of the infrared laser beam (14) and provide measurement signals for evaluating eye positions and / or eye distances of an eye (18) arranged in the beam path of the infrared laser beam (14), and having an optical unit (20), at least comprising a beam splitter optical unit (22), which is configured to split and deflect the output infrared laser beam (14) into two or more partial beams (24, 26) prior to incidence on the eye (18), the splitting and deflecting being implemented such that each of the partial beams (24, 26) of the infrared laser beam (14) is incident on the eye (18) at a different location. It is proposed that the optical unit (20) comprises an LC unit (32) with an LC cell (34), which is provided for interaction with one of the partial beams (24, 26), and wherein the LC cell (34) can be controlled in such a way that the LC cell (34) selectively allows or prevents an interference of the respective partial beam (24, 26) with its backscattered reflection signal (16, 36) in the LFI sensor unit (12) by correspondingly influencing a polarization of the respective partial beam (24, 26).

The utility model discloses an anti -interference's laser welding vision detection light source device, including the shell, the shell inside is equipped with the heat dissipation seat, is equipped with the PCB board on the heat dissipation seat, is equipped with a plurality of linear arrangement's LED lamp pearl on the PCB board, LED lamp pearl one side is equipped with the photosensitive sensor, one side of heat dissipation seat is equipped with the heat dissipation component, and the other side is equipped with the diffuser plate, the diffuser plate one end is equipped with the filter glass, the utility model provides an anti -interference's laser welding vision detection light source device, in the laser welding process, through the infrared laser beam of filter glass effective scattering carries out the anti -interference to guarantee the normal work of laser welding vision detection light source device of the utility model, thereby guarantees the normal work of laser welding, in addition, the laser welding vision detection light source device of the utility model does not need frequent shutdown in the use process, and production efficiency is high, and the manufacturing cost is low, and the heat dissipation efficiency is high.

This utility model provides an intelligent sensor-type elevator door anti-pinch protection device, relating to the field of elevator door anti-pinch protection technology. It includes two sets of detection mechanisms, each consisting of two symmetrically arranged transmitter boxes and receiver boxes with their openings facing each other. The transmitter boxes of the two detection mechanisms are respectively installed on the top edge of the elevator car door and the top of the elevator door frame. Before the elevator door begins to close, the beam of light emitted by the infrared laser transmitter passes through the space between the elevator doors and is received by the infrared laser receiver on the opposite side. If an object or person enters the space between the elevator doors during this process, it will block the infrared laser beam, causing the receiver to be unable to receive the light signal. This detection method is real-time and can detect the presence of an object or person before they come into contact with the elevator door.

The present disclosure relates to the technical field of laser optical detection, and provides a sub-micron foreign matter nondestructive detection device and a sub-micron foreign matter nondestructive detection method. The device comprises a moving carrier, a mid-infrared laser, a laser vibration detector and a signal processing module. The mid-infrared laser is used for emitting mid-infrared laser beams of different wavelengths to a sample to be detected. The signal processing module is electrically connected with the laser vibration detector and is used for receiving and processing the measurement signals of the laser vibration detector. After the detection laser irradiates the sample to be detected, the detection laser can be reflected, refracted or scattered back to the laser vibration detector. The photodetector is used for detecting the interference frequency difference of the combined laser beams and converting the interference frequency difference into an electrical signal of the vibration of the sample to be detected. The method can realize rapid detection of sub-micron foreign matters on the surface of the sample to be detected, and the sample to be detected is not damaged in the whole detection process, and the method can be applied to online detection of the sample to be detected in a pipeline.