77 results about "Beam collimation" patented technology

The embodiment of the invention provides a ray beam collimation system, and relates to the technical field of medical equipment. The ray beam collimation system comprises a primary collimator and a multi-leaf collimator. The primary collimator is provided with a through hole with a fixed shape and size, and the through hole is matched with the multi-leaf collimator in shape and size. And the primary collimator is positioned below the ray source and above the multi-leaf collimator. The multi-blade collimator comprises at least two blade groups composed of a plurality of blades, the tail end of each blade is provided with a concave-convex part, the concave-convex part comprises a plurality of first protrusions arranged at intervals in the first direction, a first recess is formed between every two adjacent first protrusions, the at least two blade groups comprise two blades opposite in the second direction, and the first protrusions are arranged at intervals in the first direction. The first protrusion of one of the two opposite blades is used for being connected with the first recess of the other blade in an inserted mode. The ray beam collimation system provided by the embodiment of the invention has the benefits that leakage rays between the tail ends of the blades are shielded, and the irradiation space of a patient in radiotherapy is increased.

The invention relates to the field of light beam control, in particular to a light beam collimation control method and system of a VCSEL light source. The method comprises the following steps: detecting an initial emergent light beam of a VCSEL light source, carrying out periodic tracking sampling, and determining a light beam structure response characteristic; carrying out region offset calculation one by one according to light beam structure response characteristics to obtain offset compensation parameters of different partitions; adjusting the driving current of the light emitting unit based on the offset compensation parameter to obtain a current adjustment parameter; applying the current adjustment parameter to a VCSEL array in real time, and performing collimation stability evaluation to obtain a stability coefficient; and performing evaluation based on the stability coefficient, and when it is judged that the VCSEL light beam enters a stable collimation state, recording the current adjustment parameter as a collimation adjustment parameter, and entering a low-disturbance maintenance mode. According to the invention, the driving current parameters of the light source are precisely regulated and controlled, so that the light beam collimation precision, stability and anti-disturbance capability are improved.

A quantitative phase contrast imaging system comprises a light source configured to generate light and to direct the light to a sample, wherein the light comprises nonlinearly polarized light; a first lens configured to receive light from the sample; a phase filter, wherein the first lens is configured to focus the light from the sample onto the phase filter, and the phase filter is configured to modulate multiple components of the nonlinearly polarized light simultaneously (e.g., geometric phase interferometry); a second lens configured to receive light from the phase filter; and a polarized camera, wherein the second lens is configured to collimate the light beam from the phase filter to the polarized camera and the polarized camera is configured to image the sample in response to the light from the phase filter. In absence of the second lens, the camera can be placed at the image plane.

The application discloses a multi-pass disk laser amplifier, which comprises a near end and a far end, a pump laser beam, a seed laser beam, a first parabolic mirror, a second parabolic mirror, a laser gain medium, a first deflection optical prism group and a second deflection optical prism group, wherein the laser gain medium comprises a medium reflection surface; the pump laser beam located at the near end is aligned to the first parabolic mirror located at the far end for incidence through a first beam collimator; and the seed laser beam located at the near end is aligned to the second parabolic mirror located at the far end for incidence after passing through a second beam collimator. Compared with a conventional multi-pass disk laser amplifier, the application has a simpler structure, a shorter amplification optical path, a more compact volume and higher system stability. Furthermore, by changing the structure of the design prism of the pump light path, 12-pass, 24-pass, 36-pass, 48-pass and other multi-pass amplifications can be realized.

There are provided: a light source to generate a laser beam; an optical modulator to superimpose a communication signal on the laser beam; an OHPA to amplify the laser beam; a collimator including a fiber connector and a collimator lens to convert the laser beam amplified into spatial light, and emit the spatial light; an optical telescope to enlarge a beam width of the spatial light and emit the spatial light to a spatial transmission path; a drive mechanism capable of adjusting a focal length of the collimator lens; and a drive controller to determine a drive amount of the drive mechanism in such a manner that a product of a free space loss calculated from a distance between the spatial optical communication transceiver and a spatial optical communication transceiver and a transmission gain determined by a beam spread angle of the spatial light is constant.

Disclosed is a free space optical communication terminal comprising: a first arm interfacing a first port of a beam splitter and comprising a first component configured to emit a divergent first emitted beam and / or utilize a first received beam; a second arm interfacing the second port of the beam splitter and including a second component configured to emit a divergent second transmit beam and / or utilize a second receive beam; and a third arm interfacing the third port of the beam splitter and including a pointing unit configured to direct the first transmitted beam and / or the second transmitted beam to the target and / or to direct the first received beam and / or the second received beam received from the target. The third arm includes an optical element for collimating the transmit beam to provide a collimated transmit beam to the pointing unit and focusing the receive beam to provide a converged beam to the first / second arm. The invention further discloses a light beam guiding method and a carrying tool.

A light detection and ranging (LIDAR) system includes a beam collimator, a plurality of first lenses, a plurality of tunable lenses, and one or more optical sources to generate a plurality of optical beams. Each tunable lens may be disposed adjacent a respective one of the plurality of first lenses such that the respective one of the plurality of first lenses is between the tunable lens and the beam collimator. Each of the plurality of optical beams may pass through one of the tunable lenses and one of the first lenses towards the beam collimator. Each of the plurality of tunable lenses may be separately controllable by selectively applying voltage to the tunable lens to adjust a focal length of the tunable lens to compensate for a variation in focus positions of the plurality of first lenses.

The LSP broadband light source may include a pump source configured to generate a pump beam and one or more collimating optical elements configured to collimate the pump beam into a collimated pump beam. The light source may include one or more focusing optical elements and a beamsplitter located at a conjugate plane between the one or more collimating optical elements and the one or more focusing optical elements. The light source may include a gas containment structure. The beamsplitter may be configured to split the collimated pump beam into a set of pump beamlets, wherein the one or more focusing optical elements are configured to focus the set of pump beamlets to a set of focus positions within the gas to generate multiple plasma regions at the different focus positions.

This invention discloses a multi-beam laser interference lithography system and method for periodic three-dimensional micro / nano structures. The system includes a laser, a diffraction element, a 4F collimation-beam control-focusing module, and a piezoelectric stick-slip precision motion system. The laser is perpendicularly incident on the diffraction element, which diffracts the beam into N sub-beams and one central beam distributed symmetrically. The 4F collimation-beam control-focusing module includes a first Fourier transform lens, a custom beam control frame, and a second inverse Fourier transform lens. The first Fourier transform lens collimates the umbrella-shaped N+1 beam generated by the diffraction element into a parallel N+1 beam. The custom beam control frame includes a half-wave plate and a polarizer along the optical axis. The second inverse Fourier transform lens focuses the parallel N+1 beams onto the same point on the sample. The lithography of the sample is completed by coordinating the spatial interference light field with the movement of the piezoelectric stick-slip precision motion system.

The invention discloses a semiconductor stack laser and a laser generating method and an assembling method thereof, and belongs to the field of lasers. According to the technical scheme, the semiconductor stacked array laser comprises a stacked array and a plurality of laser bars installed on the side of the stacked array in a stacked mode, a laser chip is arranged at the front end of a heat sink of each laser bar, a fast axis collimating lens and a reflecting mirror are sequentially arranged along an output light path, the inclined face of each reflecting mirror is obliquely opposite to the corresponding laser chip, and a VBG grating is arranged in front of the inclined face of each reflecting mirror. And the two are oppositely arranged in the reflection direction through the inclined surface. According to the design, most of laser is directly output through the vertical plane of the reflector, only a small amount of laser is reflected to the VBG grating for detection and adjustment, VBG absorption energy is greatly reduced, wavelength lock losing caused by temperature drift is avoided, stable wave locking precision during high-power operation is guaranteed, meanwhile, the fast axis collimating lens is matched with the reflector, the light beam collimating effect is improved, and the light quality is improved. And the beam quality of the output laser is optimized.

The application discloses a wireless laser charging method and system based on a UAV, relates to the technical field of UAV charging, and comprises the following steps: collimating divergent light beams into parallel light beams through a laser emitter device and expanding the diameter of the input light beams; converting the laser charging signals into electric energy through a photovoltaic array, and charging the UAV through a constant current circuit; monitoring the current and voltage in the charging process in real time through the charging control, and judging whether the charging current needs to be adjusted according to the monitored data. The application charges the UAV wirelessly without connecting a power line, judges the central position of the battery panel light spot by comparing the intensity of the laser light source and the output voltage of the photoresistor, thereby realizing accurate control of the charging process, avoiding energy waste and overcharging of the battery in the charging process, charging the UAV through a constant current circuit, avoiding the battery short circuit hidden danger caused by overcharging, and thereby ensuring the stability and safety of the UAV charging.

The present invention relates to a DC electric field sensing system with a rotating structure, so as to achieve accurately measuring the DC electric field. The system includes a laser, a rotating structure, and a detector, wherein the rotating structure includes a single-mode fiber-optic slip ring, a collimator lens, a polarizer, a quarter-wave plate, a crystal, and a multi-mode fiber-optic slip ring. Experimental results show that the technical solution has advantages such as fast response, and strong resistance to electromagnetic interference, and makes it possible to inhibit beam deviation, achieve beam collimation, and enable high-precision measurement, by using the rotating structure and the fiber-optic slip ring.

A fiber optic spectrometer, belonging to the field of optical instruments, includes a beam collimating unit positioned perpendicular to the emission direction of the fiber optic light. Behind the collimating unit, a beam deflector is tilted, and below the deflector, a projection grating is positioned. The transmission grating forms a 45° angle with the line parallel to the central wavelength principal ray of the beam collimating unit. A pair of mirrors with different tilt angles are positioned on the light emission side of the transmission grating, and a beam focusing unit is positioned on the light incident side of the transmission grating. The emitted beam from the beam focusing unit is parallel to and opposite to the central wavelength principal ray of the beam collimating unit. A detector array is positioned on the fiber emission side of the beam focusing unit. This invention uses a single projection grating, achieving two symmetrical reflections through the mirrors, and its optical path dimensions are more compact than the aforementioned dual-grating structure, thus achieving the spectral resolution effect of a dual-grating.

The present disclosure discloses an adaptive beam collimation and quality optimization system and method based on spot gridding, which belongs to the field of laser transmission. In the adaptive beam collimation and quality optimization system, a first optical reflector is installed at the front end of a three-module optical mirror frame, and an incident laser beam is reflected by a first optical reflector to reach a second optical reflector, and then the beam is output after being reflected by the second optical reflector again; an image collector collects a spot image on the second optical reflector and stores it to a computer; a computer processes the collected spot image, extracts a real-time relative position of the spot on the second optical reflector, compares the real-time relative position information with a pre-calibrated position to obtain the offset of the spot, correct the offset of the reflected beam, and feedback the intensity information of the adjacent small unit spot to a spot unit piezoelectric ceramic array module controller to correct the distortion of the reflected beam. The present disclosure can realize adaptive beam collimation and spot optimization without manual guarding and operation, and is applicable to the collimation and spot optimization of large-diameter beam transmission.

The pulse timing adjustable laser generating device of the present application comprises a timing controller, a driving power supply, a pump source, a beam collimation and shaping lens group, a beam combiner, a coupling lens group, a laser cavity mirror, a laser medium, a Q switch and a laser output coupling mirror. The multiple output ports of the timing controller are connected with the input ports of the multiple driving power supplies for generating multiple trigger signals and sending each trigger signal to the corresponding driving power supply, and each driving power supply is connected with a pump source. The present application has the advantages of compact structure, easy integration and timing programmable control pulse train working mode. Through increasing the time and sequence adjustment function of the electric modulation signal, multiple different wavelength pump sources or multiple same wavelength pump sources are pulsed pumped in time, multiple laser pulse sequences are generated in the laser cavity using the Q switching device, the problem that the pulse train laser timing is difficult to accurately control is broken through, and the application field of the pulse train laser is effectively expanded.

The application discloses a scintillator light beam collimation system, and relates to the field of light beam shaping. The system comprises an ellipsoidal reflector, a free-form surface collimation reflector cup and a free-form surface collimation lens. The scintillator is arranged at a first focal point of the ellipsoidal reflector. The ellipsoidal reflector is used for converging light rays emitted by the side of the scintillator at a second focal point of the ellipsoidal reflector. The free-form surface collimation reflector cup is connected with the ellipsoidal reflector. The free-form surface collimation reflector cup is used for collimating light emitted by the scintillator and exceeding a demarcation angle and light converging by the ellipsoidal reflector. The free-form surface collimation lens is used for collimating light emitted by the scintillator and smaller than the demarcation angle and light converging by the ellipsoidal reflector. The application can improve the light beam collimation effect of the scintillator.

The invention relates to an asynchronous reference differential reflection spectrum system and method for an MOCVD (Metal Organic Chemical Vapor Deposition) rotary sample stage, and the system comprises a light source module which is used for generating a broadband spectrum light beam, the light source module comprises a halogen tungsten lamp, an LED (Light Emitting Diode) and an optical fiber beam combiner, two paths of light sources are coupled through the optical fiber beam combiner to form a broadband light source, and the light source intensity at the wave band of 400-800 nm is ensured to be proper; the incident light path module is used for aligning the light beam to the surface of a sample in the MOCVD cavity; the reference light path module is used for carrying out intensity calibration on the light beams emitted by the light source; the reflected light path module is used for converging the reflected light of the measuring light path and the reflected light of the reference light path and transmitting the converged light to the spectrum detection component; and the signal processing module is used for performing light intensity threshold judgment, spectrum average value calculation and differential reflection spectrum calculation.

The utility model provides a time-domain double-pulse delay-adjustable high-power nanosecond laser, which comprises a passive Q-switched resonant cavity, a single-lamp double-rod amplification module, a first single-lamp single-rod amplification module, a second single-lamp single-rod amplification module, a light beam collimation module, a half-wave plate and a delay light path control module which are sequentially arranged, the centers of the single-lamp double-rod amplification module, the first single-lamp single-rod amplification module, the second single-lamp single-rod amplification module, the light beam collimation module, the half-wave plate and the delay light path control module are arranged on the same horizontal line. According to the utility model, laser pulse output with adjustable time-domain double-pulse laser delay time is realized, intelligent regulation and control of the double-pulse laser delay time are effectively realized, and the ubiquitous problems of low energy utilization rate and generation of plasma shielding effect in traditional laser shock peening are improved.

Aspects of the subject technology relate to structures and methods for facilitating optical coupling and beam collimation in photonic integrated circuits. A photonic structure can include a waveguide and a grating coupling structure coupled to the waveguide for emitting first electromagnetic radiation fed through the waveguide into a first region adjacent to a first side of the grating coupler structure and second electromagnetic radiation fed through the waveguide into a second region adjacent to a second side of the grating coupler structure. The structure can also include a reflection structure disposed in the first region adjacent to the first side of the grating coupler structure and configured to reflect at least a portion of the first electromagnetic radiation back through the first region, the grating coupler structure, and into the second region.

The invention discloses a small high-brightness strip-shaped light source which comprises a white laser light source module, a light beam collimation module, a light beam expansion module, a heat dissipation module and a circuit module. The white laser light source module comprises a laser diode module, an optical lens 1, a diffusion sheet and a wavelength conversion sheet which are arranged in sequence; the laser diode module located on the heat dissipation module is driven by the circuit module to generate blue laser, the blue laser is focused through the optical lens 1, then is dodging through the diffusion sheet and then enters the wavelength conversion sheet to convert the blue laser into white laser, the white laser is collimated through the light beam collimation module, and finally emergent light spots are expanded into strip-shaped light spots through the light beam expansion module. The light source is applied to the field of machine vision light sources and has the advantages of small light source size, high brightness and large light spot length-width ratio.

The invention discloses a device and a method for testing the isolation of a transmitting-receiving optical module of a laser communication system, and the method comprises the steps: transmitting a laser beam with the transmitting wavelength of the laser communication system through a communication light source, enabling the laser beam to pass through a polarizer and an adjustable optical attenuator, and carrying out the beam splitting through an optical fiber beam splitter for optical power monitoring and light beam collimation; the collimated Gaussian beam is reflected and returned through a polarization beam splitter (PBS) and a light returning device, at the moment, a small part of light penetrates through the PBS and is coupled into a receiving optical fiber through a focus lens group, and an optical power synchronous acquisition unit can monitor the interference optical power coupled into the receiving optical fiber; and finally, the isolation of the to-be-tested transmit-receive optical module is calculated through the data analysis unit, and the isolation test is completed. According to the invention, the characteristic that the PBS in the transmit-receive optical module has different performances on the transmission and reflection of the s / p polarized light is utilized, and the measurement of the high dynamic range of the isolation of the transmit-receive optical module is realized by directly comparing the power of the communication transmitted light with the power of the interference light entering the receiving optical fiber.

This invention provides a laser transfer method for a Micro-LED array, comprising the following steps: S1, depositing multiple metal contacts on a driving substrate, with a bonding metal layer deposited on each metal contact; S2, attaching adhesive tape to one side of the bonding metal layer; S3, using a laser to ablate the interior of the sapphire substrate corresponding to each micro-LED pixel to form a bowl-shaped hole, creating a micro-LED pixel with a sapphire microlens, and each micro-LED pixel with a sapphire microlens falling onto the adhesive tape under gravity; S4, using thermo-press bonding to bond the electrode of each micro-LED pixel with a sapphire microlens to the bonding metal layer on the driving substrate, forming a stable interconnect and completing the electrical connection; S5, after completing the thermo-press bonding, washing away the adhesive tape to obtain a Micro-LED display device with mass transfer completed. This invention improves light extraction efficiency and beam collimation.

The invention relates to a light beam collimation control method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring a level quantized value of a current light beam angle and a level quantized value of a position in real time; obtaining an angle difference value and a position difference value of the current light beam according to the angle level quantized value and the position level quantized value of the current light beam; based on the light beam angle difference value and the light beam position difference value, determining adjustment directions of the light beam angle and the light beam position, and respectively generating adjustment parameters of the light beam angle and the light beam position; adjusting the angle and the position of the light beam according to the light beam angle difference value, the light beam position difference value and the adjusting parameter; and the steps are repeatedly executed, and the angle difference value and the position difference value of the current light beam are controlled within a preset threshold value. According to the light beam collimation control method and device, the computer equipment and the storage medium, it can be ensured that the light beam angle and position deviation is always corrected in real time, and the directivity error is effectively controlled within the preset reasonable range.

This invention relates to the field of road safety, and more particularly to a method for generating a safety laser visual barrier on a road. The method includes the following steps: Step A: providing at least one laser source; Step B: optically shaping the beam emitted from the laser source to obtain a shaped laser output. The optical shaping is performed using at least one of the following two schemes: Scheme 1, diffusing the beam into a laser fan using optical elements, wherein the vertical divergence angle β of the laser fan satisfies 0°<β≤180° and the horizontal divergence angle α satisfies α≤15°; Scheme 2, collimating the beam into a parallel beam using a collimating lens, wherein the divergence angle θ of the parallel beam is less than 10 milliradians; Step C: projecting the shaped laser output onto a road area to form a safety laser visual barrier on the road area. This application fundamentally solves the core technical problem of existing road laser warning systems failing to simultaneously achieve safety compliance, barrier integrity, and beam accuracy.

The invention discloses a transmission electron microscope in-situ sample rod with an internal coaxial light path, and belongs to the field of transmission electron microscopes. The sample rod comprises a sample rod head, a sample rod body and a handle which are connected in sequence. The sample rod head is provided with a sample carrying table and a condensing lens, and the exciting light is converged to a sample; a sealed optical fiber guide channel and an optical fiber contained in the sealed optical fiber guide channel are arranged in the sample rod body, and the exciting light and fluorescence generated by exciting the sample are coaxially propagated through the optical fiber; a light beam collimator, a dichroscope, a light filtering assembly, a collecting lens and a sensor are arranged in the handheld handle, exciting light is collimated by the light beam collimator and reflected by the dichroscope, then is coupled to enter an optical fiber and is focused by a condensing lens to irradiate a sample, and a fluorescence signal generated by the sample is returned by the same optical fiber, is transmitted to pass through the dichroscope and the light filtering assembly and then is transmitted to the sensor. And the collecting lens focuses to the sensor. Through coaxial design of an excitation light path and a fluorescence light path, the internal space of the sample rod is remarkably saved, and in-situ and real-time monitoring of a material microscopic fluorescence dynamic process is realized.

The invention provides a laser beam measurement system of a deep ultraviolet lithography machine and the lithography machine, and belongs to the technical field of lithography machines, and the system comprises a first light splitting part which divides an incident deep ultraviolet laser beam into a lithography beam and a measurement beam; the second light splitting component is used for splitting the measurement light beam into a first measurement branch light beam and a second measurement branch light beam; the light beam position measurement branch receives the light beam of the first measurement branch and comprises a light beam collimation component and a first detection component which are sequentially arranged along a light path; the light beam pointing angle measurement branch receives the light beam of the second measurement branch and comprises a light beam focusing part and a second detection part which are sequentially arranged along the light path; the light beam collimation part is used for carrying out beam shrinkage processing on the light beam of the first measurement branch, and the light beam focusing part is used for carrying out angle amplification processing on the light beam of the second measurement branch, so that decoupling measurement of light beam position information and directional angle information is realized. According to the invention, high-precision and high-reliability decoupling measurement of the position and the directional angle of the deep ultraviolet laser beam is realized.

The invention relates to the technical field of light beam reconstruction, discloses a multi-aperture imaging type light beam reconstruction system for solar direct radiation simulation, and solves the problems of large solar field angle, poor irradiation uniformity and contradictory energy utilization rate of a traditional system. The system comprises a first micro-lens array, a second micro-lens array and a collimation integral lens which are arranged in sequence, the MLA1 and the MLA2 are 9 * 9 arrays, the focal lengths and the diameters of the sub-lenses are consistent, and the distance between the two arrays is equal to the focal length of the MLA1; and the collimation integrating lens is matched with the micro lens array to realize light beam collimation superposition. After reconstruction, the solar field angle is 31.6 ', the irradiation nonuniformity of the working condition of AM0G / AM1.5 G is 0.95% and 0.77% respectively, the power in a barrel in a sampling interval of 184mm * 184mm of a target surface is 97.51%-98.58%, the defocusing amount of-150 mm to 150 mm and the inclination angle of-24 degrees to 24 degrees still meet the IEC 60904-9: 2020 A + level, and the device is suitable for high-precision light beam regulation and control of direct solar radiation simulation.

This invention provides a laser parameter synchronous measurement system based on an attenuation fixture, including a beam collimator, a first reflecting mirror, a second reflecting mirror, a first beam splitter prism, a second beam splitter prism, a power meter, and an M... 2 The system includes a test instrument, a spectrum analyzer, a pulse width measurement module, and a spectrum analyzer; after the system is powered on and the laser under test outputs laser light, the power meter and M are simultaneously triggered. 2 The tester, spectrometer, pulse width measurement module, and spectrum analyzer are used to detect the laser parameters output by the laser under test. This invention can simultaneously measure parameters such as laser power, beam quality, and pulse characteristics (repetition frequency, pulse width), avoiding errors introduced by step-by-step measurements. Through synchronous triggering and data acquisition, it ensures that all parameters are measured under the same time reference, making it particularly suitable for dynamic laser systems or pulsed laser analysis. The integrated software can automatically integrate key parameters (such as peak power, average power, pulse width spectrum, etc.) and generate a laser parameter test report.

This invention discloses an extreme ultraviolet (EUV) spectral line detection instrument, comprising a beam collimator, a filter assembly, a slit component, a grating, and a detector. The filter assembly includes a filter wheel and a filter. The slit component forms a working slit and a calibration slit. The horizontal distance between the working slit and the grating is smaller than the horizontal distance between the detector and the grating, causing the positional relationship between the working slit, the grating, and the detector to deviate from the traditional Rowland circle relationship. When the EUV spectral line detection instrument is working normally, the working optical path is open and the calibration optical path is closed. When the EUV spectral line detection instrument calibrates the working slit light, both the working and calibration optical paths are open. The incident light, collimated by the beam collimator, is filtered by the filter and then enters the first position of the grating through the working slit, converging to the first position of the detector. The incident light, collimated by the beam collimator, is filtered by the filter and then enters the second position of the grating through the calibration slit, converging to the second position of the detector.

The invention discloses an optical cavity adjusting system and method, and the optical cavity comprises a first cavity mirror and a second cavity mirror. The adjusting system comprises a light source, a beam splitting unit, a collimation unit, a pose adjusting unit, an imaging unit and a control unit. The light source is used for emitting test beams; the beam splitting unit is used for splitting the test beam into a first test beam and a second test beam; the collimation unit is used for modulating the first test light beam and the second test light beam to coincide; the pose adjusting unit is used for adjusting the poses of the first cavity mirror and the second cavity mirror; the imaging unit is used for imaging the test light beam; and the control unit is used for controlling the pose adjusting unit to adjust the poses of the first endoscope and the second endoscope according to the imaging pattern. In the embodiment of the invention, the optical adjusting system is built, and the pose adjusting units are respectively arranged on the first cavity mirror and the second cavity mirror, so that an automatic adjusting process is realized, the precision and the accuracy of cavity mirror adjustment are improved, and the difficulty of optical cavity adjustment is reduced.