55 results about "Laser safety" patented technology

Apparatus and associated methods relate to generating and verifying a tamper-proof media (e.g., an image, a video). In an illustrative example, a media provenance verification system (MPVS) may automatically verify a provenance of a media file of temporally related frames. The MPVS, for example, may retrieve verification records associated with the media file from a decentralized ledger. The MPVS may select a verification record corresponding to a media frame of the media file. From the media frame, the MPVS may extract a laser security signature of the media frame. For example, the laser security signature may include a clock pattern related to a public verifiable random value (PVR), a depth marker, and a hash of a previous media frame. In some implementations, the media frame may be determined to be real when a time provenance related to a creation time, a depth provenance related to an image depth, and a continuity provenance related to a continuity are passed. Various embodiments may advantageously provide a real-time tamper-proof video validation.

The invention discloses a dynamic multi-spot projection optical system based on an LED light source, which comprises the LED light source, a reflecting cover, a grating sheet, a condensing lens, a concave reflector and an optical reflection assembly, and is characterized in that the LED light source is arranged at the bottom of the reflecting cover, and the grating sheet is provided with a light-transmitting area with a preset pattern shape; the reflecting cover consists of a plurality of plane reflectors A; the concave reflector consists of a plurality of plane reflectors B; light emitted by the LED light source forms a pattern light beam through the grating piece, the light beam is divided and reflected into a plurality of sub light beams through the conical reflecting cover, and the sub light beams are guided to the condensing lens through the optical reflecting mirror set. According to the invention, a low-cost, laser-free and safe LED scheme is adopted, and through innovative optical design, a complex dynamic light and shadow effect comparable to or even surpassing laser projection is realized, and the imaging definition is kept unchanged within a projection distance range of 2-15 meters.

The invention discloses a safety monitoring device based on tunnel construction, and relates to the technical field of laser safety detection, driving motors are symmetrically and fixedly mounted at the two ends of the interior of a fixed box, output shafts of the two driving motors are fixedly connected with electromagnetic blocks, and mounting frames are fixedly mounted at the positions, corresponding to the two driving motors, of the two inner walls of the fixed box; an electromagnetic block is used for adsorbing a metal round block, then a driving motor can drive a rotating shaft and a rotating block to rotate, guide rollers are used for being attached to the inner wall of a constructed tunnel, the guide rollers on the two sides play a role in limiting and guiding the whole equipment, and when a movable base moves forwards, the guide rollers are attached to the inner wall of the tunnel all the time; the whole equipment is always kept in the middle of the tunnel, equipment deviation or collision caused by the fact that the equipment encounters a bent position in the advancing process is prevented, workers do not need to monitor the advancing track all the time, and use is more convenient.

The invention discloses an intelligent early warning method and system based on laser control industrial data, and belongs to the technical field of laser safety early warning. The system comprises an equipment control module, a data acquisition module, an analysis database, a model management module, a monitoring judgment module and an alarm module, the equipment control module is used for controlling the laser to cut the industrial product; the data acquisition module is used for acquiring cutting data and parameter data generated in the industrial product cutting process; the analysis database is used for storing historical data of the cutting data and the parameter data; the model management module is used for establishing a deviation analysis model and analyzing the influence of different influence parameters on the cutting deviation of the industrial product; the monitoring judgment module is used for judging whether current industrial product cutting is abnormal or not; the alarm module is used for carrying out abnormity alarm; according to the method, the influence of different influence parameters on the cutting deviation of the industrial product is considered, and the accuracy of system data analysis is improved.

A method of operating a laser includes generating a first signal having a first frequency, and generating a second signal having a second frequency. The first frequency varies in accord with an amplitude of a drive current provided to a laser. The method further includes incrementing or decrementing a count responsive to a relationship between the first frequency and the second frequency; determining the count satisfies a threshold count; and modifying operation of the laser when the count satisfies the threshold count.

The invention discloses a galvanometer laser welding safety control system based on an EtherCAT bus, and the system comprises a welding system master station which is a control core and is used for receiving machining parameters and welding machining data sent by upper computer system software and compiling safety machining control logic; the galvanometer and laser control slave station is led out from the welding system master station and is used for receiving encrypted instructions and data sent by the welding system master station through the EtherCAT bus; and the safety control slave station comprises all galvanometer and laser safety control logics, and the safety control slave station exchanges information with the welding system master station in real time through an EtherCAT bus to complete a laser welding task. By utilizing the advantage of a bus real-time technology and combining galvanometer and laser control into a whole, compared with a traditional welding system, the system has the advantages of being high in speed, high in precision, high in space accessibility, high in safety, capable of welding weld joints in various shapes and the like. Meanwhile, the hardware cost is reduced, and the system integration level is improved.

1. Name of the product in this design: Laser Servo Pressure Welding Gun. 2. Purpose of this design: For laser welding, to solve the problems of part gaps and laser safety protection. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application discloses a laser safety control system and a control method thereof, and relates to the technical field of lasers.The laser safety control system comprises a multimode main control device and at least one single-mode main control device, wherein the multimode main control device is electrically connected with the single-mode main control device, is used for receiving two emergency stop interlocking signals input through an external control board, and is used for coupling the two emergency stop interlocking signals with a pulse width modulation pulse signal to form a double-channel emergency stop interlocking pulse signal and transmitting the double-channel emergency stop interlocking pulse signal to the single-mode main control device; and the single-mode main control device is used for receiving the double-channel emergency stop interlocking pulse signal and controlling a laser according to the double-channel emergency stop interlocking pulse signal. Therefore, the safety control logic of the laser can be optimized, the safety level of the laser control is improved, the workpiece is prevented from being damaged, the machining efficiency is improved, and the safety of equipment and personnel is ensured.

The present patent application aims to teach imaging apparatus, methods, and systems for providing a laser safety interlock for at least one optical probe in the apparatus. The interlock mechanism ensures the lasers are off when the optical probe is not spinning to reduce the laser hazard.

The utility model relates to the technical field of numerical control machine tools, in particular to a numerical control machine tool laser safety protection device which comprises a machine tool body, a supporting frame is installed at the rear end of the machine tool body, a laser instrument body is installed at the top end of the supporting frame, and a protection mechanism is installed in the center of the supporting frame and comprises a protection cover. A dust suction device is mounted on the right side of the protective cover, a lifting mechanism is arranged on the right side of the protective mechanism, and a right trapezoidal sliding block and a left trapezoidal sliding block are arranged in trapezoidal sliding rails mounted on the inner wall of a supporting frame in a sleeving mode, so that adjustment is facilitated, and protection is facilitated; a dust collection device can be fixedly mounted through a mounting block mounted through a right trapezoidal sliding block, so that dust removal is convenient and fast, and an L-shaped pipeline mounted at the bottom end of a dust collector can be mounted in an extraction opening and synchronously ascends and descends with a laser instrument main body; and a servo motor in the lifting mechanism is started to drive the protection mechanism to perform height adjustment, so that objects with different thicknesses can be protected, and the applicability of the device is improved.

A diagnostic system for a high-power laser system that detects and responds to malfunctions in the interlock of a laser safety system. When a fault is detected in any of the interlock circuits, the operating conditions of the laser are restricted or even shut down. To distinguish between typical transient faults caused by ambient conditions and persistent faults caused by a failed component or circuit that require external intervention for repair, the system uses a database of possible fault classifications to determine the likely type of fault. If the fault is likely to be transient, the laser is maintained in a reduced-power state until one or more temporary interlocks are applied as a backup for the failed interlock. The system can be repeatedly tested at full-power output for fault correction. Once recovered from a fault, the backup interlock can be disabled and the system returned to full operation.

A safety apparatus that includes a case, a diode sensor secured within the case, and a fastener for removably securing the case to a laser safety clipper ring.

The utility model relates to the field of bending machine safety protection technology, especially a kind of laser safety light curtain support mobile quick fixing device, including laser safety light curtain, and the bracket aluminum profile is bolted on the upper end of laser safety light curtain.The laser safety light curtain support mobile quick fixing device can be separated from the adjusting position cylindrical pin when the safety light curtain wants to be adjusted to the corresponding position, and then the safety light curtain support mobile quick fixing device can be conveniently slid up and down, and after adjustment is completed, the safety light curtain support mobile quick rotating sleeve is connected on the adjusting position cylindrical pin, which can be immediately fixed without adjusting height adjusting block and clamping handle, without repeating light calibration work, time-saving and labor-saving;When die is replaced, only the position of adjusting position cylindrical pin needs to be changed, the safety light curtain can be moved, fixed after adjusting to the corresponding position, and then replaced, with high efficiency and convenience.

The utility model relates to a device for automatically adjusting a laser safety protection mechanism, which comprises a support, a servo motor mounted at the upper end of the support, a support mounted at the lower end of the support, a guide rail mounted in the support along the length direction, a screw mounted on the support, a lower end of the screw rotatably connected with the support, an upper end of the screw connected with the servo motor, and a lower end of the screw connected with the servo motor. The guide rail is provided with a sliding seat, the sliding seat is in threaded connection with the lead screw, one side of the sliding seat is connected with a supporting arm, the supporting arm is connected to the side face of a sliding block of the bending machine, and the supporting seat is provided with a laser safety protection mechanism; the servo motor is in signal connection with the bending machine main control system; according to the utility model, the height of the laser safety protection mechanism can be automatically adjusted according to different molds, so that the laser safety protection mechanism can be matched with the corresponding mold.

1. The name of the design product: laser safety house. 2. The use of the design product: for safe containment of laser equipment and its operating space function, to realize the safety protection of laser operators. 3. The design points of the design product: the shape of the product as a whole. 4. The picture or photo that best indicates the design points: perspective view.

Machine device (1) for laser processing, in particular for laser cutting, of a workpiece (2), comprising: a processing laser source (6) for generating a processing laser beam (7) with a processing wavelength (λ) W ), at least one sensor device (9, 10) comprising an illumination laser source for generating an illumination laser beam for illuminating the workpiece (2) with an illumination wavelength in the visible wavelength range and a detector for detecting an illuminated workpiece area where the illumination laser beam strikes the workpiece (2). The machine device (1) has a machine housing (3) in which the sensor device (9, 10) is arranged. The machine housing (3) has a laser protection screen (4) which is opaque to radiation with an illumination wavelength of less than 490 nm, preferably less than 470 nm, and particularly less than 460 nm.

A diagnostic system for a high power laser system detects and responds to malfunctions in an interlock of a laser safety system. Faults detected in any interlock circuit require limiting the operating conditions of the laser, or even shut down. To differentiate between transient faults that are typically caused by environmental conditions and more persistent faults that are caused by faulty components or circuits and require external intervention to correct, the system uses a database of possible fault classifications to determine possible types of faults. If the fault may be transient, the laser is maintained in a reduced power state until one or more temporary interlocks are applied as standby for the fault interlock, so that the system may be repeatedly tested at full power output for fault correction. Once the failure recovers, the backup interlock may be deactivated and the system returns to full operation.

A system is disclosed which includes a laser which has a calibrated optical power and a calibrated tolerance. The system includes a driving circuit configured to generate a first current pulse and a second current pulse. The system includes a primary observer module configured to observe a first and second primary input. The system includes one or more secondary observer modules configured to observe one or more first and one or more second secondary inputs. The system includes a controller communicatively coupled to the laser, driving circuit, primary observer module, and the one or more secondary observer modules. The controller is configured to receive an information packet, calculate an optical power, determine a deviation of the optical power from the calibrated optical power, compare the deviation with the calibrated tolerance, and perform an action if the deviation exceeds the calibrated tolerance.

A safety apparatus that includes a case, a diode sensor secured within the case, and a fastener for removably securing the case to a laser safety clipper ring.

Device (100) for introducing a lasered security feature into a blank (200) of an identification, value or security document comprising a flat surface (202), comprising: - a holder (124) for receiving or fixing the position of the blank (200), - a laser source (102) for emitting a laser beam (104), - a lens arrangement (106) comprising at least one electromotively displaceable lens (108) and configured to shape the laser beam (104) emitted by the laser source (102), - a mirror arrangement (112) comprising at least one electromotively adjustable mirror (114) and configured to deflect the laser beam (104) emerging from the lens arrangement (106), - a further lens arrangement (118) for deflecting the laser beam (104) deflected by the adjustable mirror (114) such that the diffracted laser beam (104) impinges on the blank (200) substantially perpendicular to its surface (202), and - a control device (126) for controlling the displaceable lens (108) of the lens arrangement (106) and the adjustable mirror (114) of the mirror arrangement (112), wherein the control device (126) is arranged: a) to record and / or process reference values ​​(122) in the form of three-dimensional topographic data, b) to cause the mirror arrangement (112) to scan the blank (200) with the laser beam (104) in an area provided for the security feature and thereby to introduce the security feature by means of the laser beam (104), and c) adjusting the laser beam (104) in terms of its focal length or its diameter based on the reference values ​​as a function of its point of impact on the flat surface (202) while maintaining the distance between the surface (202) of the blank (200) and the further lens arrangement (118), the focus of the laser beam (104) then following a surface of the reference values ​​in the Z direction.

The invention relates to a laser safety device, in particular a laser safety helmet, with at least one optical glare protection filter (12), which in particular has a nose cutout (14), with at least one sensor unit (16) which is provided for detecting a working state and for controlling the transmittance of the glare protection filter (12) accordingly, with at least one shield unit (18) which is provided for protecting the face of a user (20) and in which the at least one glare protection filter (12) is firmly mounted. It is proposed that the laser safety device has a radiation protection unit (22) which extends around the glare protection filter (12) and is made at least partially of a metallic material.

1. Name of the product in this design: Laser Heart Protector (B). 2. Purpose of this design: For use in human laser irradiation therapy. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention belongs to the field of water-guided laser safety control, and discloses a multi-sensor fusion anti-collision system for microjet and a control method thereof, and the anti-collision system comprises a linear sensor network, an analog quantity acquisition module, a switch, a data processing module and an execution module. Through multi-sensor data fusion, dynamic threshold judgment and setting of a corresponding grading response strategy, comprehensive monitoring and protection of the operation state of the micro-jet equipment are achieved, the detection precision of the sensors is greatly improved, tiny displacement changes can be captured in time, and the collision response time is remarkably shortened; a pre-trained risk assessment model is combined with historical processing data to dynamically optimize a dynamic threshold, so that the false alarm rate is effectively reduced; furthermore, by adopting a redundancy detection array formed by linear sensors, the non-dead-corner continuous monitoring of the micro-jet is realized, and the collision source is accurately positioned, so that the safety of the micro-jet equipment is improved, the processing quality is remarkably improved, and the service life of the equipment is remarkably prolonged.

The present invention discloses a safety monitoring device based on tunnel construction, which relates to the field of laser safety detection technology. Drive motors are symmetrically fixedly installed at both ends of a fixed box, and the output shafts of the two drive motors are fixedly connected to electromagnetic blocks. Mounting frames are fixedly installed at positions corresponding to the two inner walls of the fixed box and the two drive motors. The present invention utilizes electromagnetic blocks to adsorb metal round blocks, and then the drive motor can drive the rotating shaft and the rotating block to rotate, so that the guide rollers can be used to fit the inner wall of the tunnel under construction. The guide rollers on both sides start the limiting and guiding function of the entire device. When the mobile base moves forward, the guide rollers always fit the inner wall of the tunnel, so that the entire device always remains in the middle of the tunnel, preventing the device from offsetting or colliding when encountering a bend during the forward movement. There is no need for staff to monitor the forward trajectory at all times, and the use is more convenient.

To increase the reach distance of laser beam while enabling miniaturization and complying with laser safety standards.SOLUTION: A floodlight device includes a plurality of floodlight units that can switch the emission direction and the emission timing of the optical signal, and a plurality of first control units that control the emission direction and the emission timing of the optical signal emitted from the corresponding floodlight units among the plurality of floodlight units.SELECTED DRAWING: Figure 1

The utility model discloses a quick-change type laser safety protection device which comprises a shell, a buckle, a quick-change plate, an exhaust pipe and a flow meter. Wherein a plurality of clamping pieces are arranged at the upper end of the shell; the shell is further provided with a first limiting groove. The buckle is movably arranged in the first limiting groove; a plurality of clamping grooves, second limiting grooves and through holes are formed in the quick-change plate; the plurality of clamping grooves are in one-to-one correspondence with the plurality of clamping pieces, and the clamping pieces can be clamped with the quick-change plate through the corresponding clamping grooves; the second limiting groove is matched with the buckle, and the buckle can lock the shell and the quick-change plate through the first limiting groove and the second limiting groove; the through hole is communicated with the shell; the exhaust pipe is communicated with the shell; and the flow meter is communicated with the exhaust pipe. The utility model discloses a laser marking device. The utility model solves the problems that the existing device does not have a quick change function and is difficult to monitor the air exhaust flow; rapid maintenance and cleaning are realized, and the operation state of equipment is accurately mastered.

A diagnostic system for a high power laser system, which detects and responds to malfunctions in interlocks of the laser safety system. A fault detected in any interlock circuit mandates a limitation in the operating conditions of the laser, or even a shutdown. In order to distinguish between transient faults, arising typically from ambient conditions, and more permanent faults, arising from faulty components or circuits, and which require external intervention to rectify, the system uses a database of possible fault classifications to determine the likely type of fault. If the fault is likely transient, the laser is maintained in a reduced power state, until one or more temporary interlocks are applied as backup for the failed interlocks, so that the system can be repeatedly tested for fault correction at full power output. Once the fault recovers, the backup interlocks may be disabled and the system returned to full operation.

The present application relates to the field of unmanned aerial vehicle countermeasure, in particular to a kind of laser safety control method of laser anti-unmanned aerial vehicle system.This method first establishes the three-dimensional layout model of the protected area, then combines target information, equipment information and the three-dimensional layout model of the protected area, calculates airspace visibility safety degree, view target safety degree, shielding area safety degree, and introduces target threat degree, finally weights and sums airspace visibility safety degree, view target safety degree, shielding area safety degree and target threat degree, obtains the final safety degree, and obtains laser control judgment result.The present application combines three-dimensional layout model, multi-dimensional safety degree and target threat degree, realizes the safety control of laser of laser anti-unmanned aerial vehicle system under controllable collateral damage, so that laser anti-unmanned aerial vehicle system can exert maximum damage power.

This patent application aims to teach an imaging device, method, and system for providing a laser safety interlock for at least one optical probe within the device. The interlock mechanism ensures that the laser is turned off when the optical probe is not spinning, thus suppressing laser beam hazards.

The present invention discloses a deep-layer detection system, method, and application based on a large-spot spatially offset Raman probe. The system comprises a handheld probe housing, a laser light source, a spot amplifier, a sample stage, a Raman fiber probe, a spectrometer, and a data processing module. The handheld probe housing secures the laser light source, spot amplifier, and Raman fiber probe into a single unit, namely, a large-spot spatially offset Raman probe, which is disposed on the upper side of the sample stage. The Raman fiber probe is electrically connected to the spectrometer and the data processing module, respectively. The laser light source emits laser light in parallel through the spot amplifier, producing a spot with a diameter of at least 1 cm on the surface of the sample to be tested. The Raman fiber probe is positioned at the edge of the spot. The present invention ensures laser safety and has a large detection depth within biological tissue. It can detect lesions within tissues at different depths without adjusting the distance between the spot center and the Raman collection probe.