224 results about "Optical table" patented technology

The invention relates to the technical field of quantum sensing and ocean detection, and discloses an ocean magnetic field sensor based on an NV color center and an ocean magnetic field measuring method.The sensor comprises a cylindrical pressure-resistant cabin, an optical platform arranged in the pressure-resistant cabin and a main control panel; a laser, a beam shaping unit, a dichroscope, a beam shaping lens group, an objective lens, a diamond NV color center chip, a plano-convex lens I, a band-pass filter and a photoelectric detector are mounted on the optical platform; two microstrip loop antennas are mounted on the outer side of the diamond NV color center chip; an FPGA + ARM dual-core processor, a digital lock-in amplifier and two microwave signal generators are installed on the main control board, and the microwave signal generators are connected with the microstrip loop antenna and achieve electromagnetic coupling with the diamond NV color center chip. The invention has the advantages of high sensitivity, good long-term stability and strong anti-interference capability, and provides a new generation of quantum sensing solution for applications such as ocean geomagnetic monitoring and underwater target identification.

The invention discloses a straight gear shape-free measurement method based on single-group line structured light. The method comprises the following steps: constructing an optical platform coordinate system, carrying out line structured light coordinate system calibration through a spherical calibration body, and calibrating the rotation center of a precision turntable; installing a measured straight gear, establishing a straight gear coordinate system, and adjusting the position of the linear structure optical measuring head, so that the measuring field of view of the linear structure optical measuring head covers a root circle to an addendum circle of the straight gear; the straight gear is installed on a precision rotary table, the straight gear is driven to rotate at a constant speed, a linear structure optical probe scans and collects straight gear contour point cloud data and circular grating angle information, and tooth surface three-dimensional point cloud data is obtained; based on the three-dimensional point cloud data of the tooth surface, extracting an addendum circle, a dedendum circle and an involute tooth profile, and calculating spur gear parameters; performing reverse three-dimensional shape modification tooth surface identification on the shape modification straight gear to generate a three-dimensional deviation diagram; and outputting a measurement result and printing a report. The problems of shape-free rapid measurement, modification tooth surface identification and tooth surface three-dimensional deviation characterization of the straight gear with unknown basic parameters are solved.

The invention provides a lens optical axis consistency inspection device and a detection method thereof, and relates to the technical field of lens optical axis consistency, and the lens optical axis consistency inspection device comprises an optical platform as an installation reference, a target plate structural member which is fixed on the platform and is provided with a first cross mark, and a fixed seat structural member which is spaced from a target plate by a preset distance and is used for installing a to-be-detected lens module. The method is characterized in that the lens optical axis consistency is evaluated by comparing the position deviation between a target plate mark image acquired by a lens module and a second mark generated by a sensor. According to the invention, a simple mechanical structure is used for replacing a traditional expensive and complex instrument, and through a unique double-label comparison principle, not only can rapid qualitative screening be realized, but also accurate quantitative calculation can be carried out. The device has the outstanding advantages of low cost, simplicity and convenience in operation and high detection efficiency. The design effectively solves the problem of rapid detection of the consistency of the batch lens centers of the production line, significantly reduces the detection threshold and cost, and is of great significance to the improvement of the product quality control level.

The invention discloses a side edge guiding optical platform, a camera module and electronic equipment, and relates to the technical field of image equipment, and the side edge guiding optical platform comprises a base which is provided with a first abutting part; the movable seat is provided with a second abutting part; the guide piece is arranged on the side face of the base and the side face of the movable seat, the guide piece is provided with a first guide face matched with the first abutting part and further provided with a second guide face matched with the second abutting part, and the first guide face and the second guide face are arranged at an angle; the limiting mechanism acts between the base and the guide piece and between the guide piece and the movable seat and is used for enabling the first abutting part to be always in abutting fit with the first guide surface and enabling the second abutting part to be always in abutting fit with the second guide surface; according to the side edge guiding optical platform, the guiding piece is matched with the side face of the base and the side face of the movable base, efficient integration of space is achieved, and therefore the problem that an existing side edge guiding optical platform is large in height in the optical axis direction is solved.

The invention relates to a laser radar rotating mirror testing device and method, and the device employs a double-light-path design: a testing light source is subjected to beam splitting through a spectroscope, is reflected by a reflector I and a rotating mirror to form a testing light spot, is reflected by a reflector II to form a reference light spot, and is synchronously projected to a testing plate; a high-precision camera is used for capturing light spot displacement, a reference mark is combined to calibrate a coordinate system, and sub-milliradian level detection of rotating mirror angle drift is achieved. A sealed heat preservation cover is linked with temperature control equipment, so that the temperature control precision of + / -0.1 DEG C is realized; the integrated clamp synchronously fixes the rotating mirror and the reflecting mirror II to eliminate relative displacement errors of parts; the damping optical platform thoroughly isolates ground vibration; the same test light source reduces test errors. According to the testing method, a drift curve is automatically generated through temperature circulation (-40 DEG C to 85 DEG C), the angle drift amount is calculated according to a formula, a temperature compensation model is output, and rotating mirror temperature drift characteristic evaluation and compensation parameters are provided for the high-precision laser radar.

The invention discloses an optical thermostat with comprehensive vibration reduction and low-temperature in-situ displacement functions, which adopts upper and lower opposite vibration absorbers and a large-mass base to realize first-order to second-order inertial vibration absorption, and further realizes thorough decoupling with an optical platform in a suspension type non-contact manner, and the vibration transmissibility can be reduced to be less than 10%. Resonant frequencies of two systems (a sample table system and a cold head system) are designed to achieve vibration decoupling. The technical problems that in the prior art, the high-grade vibration isolation capacity is insufficient, refrigerator noise is easily coupled to a measuring light path, the low-temperature in-situ precision displacement capacity is lacked, and the contradiction between heat isolation, convenience and cost is difficult to balance can be solved. Under the support of a conventional GM refrigerator, the comprehensive requirements of ultralow basic vibration, strong decoupling of a measurement light path, low-temperature in-situ micron-sized displacement, convenient sample replacement and efficient refrigeration / thermal control are met at the same time.

The invention relates to an aperiodic disturbance control vibration grid turbulence generation device, which comprises a vibration grid device and a flow field observation device, and is characterized in that the vibration grid device comprises a water tank frame, a water tank, a linear slide rail, a linear module, a vibration grid, a motor and a control system PLC module; the flow field observation device comprises an optical platform, an auxiliary LED lamp and a particle image velocity measurement system, wherein the particle image velocity measurement system comprises a high-speed camera, a laser and a computer. According to the invention, isotropic turbulence in a complex mode can be simulated, and the application range of equipment is expanded. According to the invention, the limitation of a vibration grating device based on periodic disturbance control is overcome, and a more flexible experiment platform is provided for turbulence mechanism research and application of the turbulence mechanism in the fields of material transportation, diffusion, sedimentation, flocculation and the like.

The invention relates to the technical field of infrared temperature measurement, and particularly discloses an infrared radiation temperature measurement system based on a point detector, which is used for solving the problems that in a 200-1200 DEG C heating furnace, infrared temperature measurement of an existing point detector cannot dynamically select a point detector and a filtering wave band along with the state of a hearth, accurate measurement, quick response and long-term calibration of a wide temperature region are difficult to meet at the same time, and the accuracy of temperature measurement is low. The device comprises an optical platform, an optical path switching unit is arranged on the optical platform, the optical path switching unit is connected with a plurality of optical inlets, the optical inlets are converged to a main optical axis, and a dynamic narrow-band filter and a point detector selection module are sequentially arranged on the main optical axis; through adaptive selection of the dynamic filtering wave band and the point detector, multi-spectrum fusion inversion and an online self-calibration mechanism, the temperature measurement error and drift are reduced under the conditions of wide temperature range, high flue gas interference and long-term continuous operation, and the precision, response speed and reliability of temperature measurement of the heating furnace are improved.

The invention provides a terahertz frequency comb generation verification method and system based on an optical fiber microcavity optical frequency comb, and the method comprises the steps: injecting a continuous wave laser into an optical fiber microcavity resonator to generate a stable Kerr optical frequency comb, enabling the Kerr optical frequency comb to work in a single soliton state or a soliton crystal state, and obtaining an optical frequency reference with low phase noise. Furthermore, spectrum selection is performed on the optical frequency comb, multiple groups of optical comb tooth pairs comprising comb teeth of different orders are actively selected, and the optical frequency difference of each group of comb tooth pairs is directly converted into an electric signal in a terahertz frequency band by utilizing a beat frequency effect of a photoelectric detector. A plurality of terahertz electric signals generated by different comb tooth pairs are integrated to form a multi-channel terahertz frequency comb. The method allows a plurality of discrete and frequency-controllable terahertz signal channels to be generated in parallel on a single optical platform through one-time optical processing and photoelectric conversion, so that multichannel terahertz frequency comb generation is realized.

The invention discloses an optical aspheric optical axis calibration system and method based on a CGH, and belongs to the technical field of precision optical machine installation and adjustment. The system comprises an optical platform, wherein a first theodolite, an interferometer, a CGH and an aspherical mirror to be calibrated are sequentially arranged on the optical platform along a light transmission path; the aspheric mirror to be calibrated is provided with a calibration accurate measurement mirror. The first theodolite, the interferometer, the CGH and the aspherical mirror to be calibrated are all arranged on the position-adjustable platform. The method comprises the following steps: step 1, adjusting an alignment area of the CGH to be aligned with an interferometer; 2, adjusting the position of a to-be-calibrated aspherical mirror, and enabling the angle between the optical axis of the CGH and the optical axis of the to-be-calibrated aspherical mirror to be consistent with a theoretical angle; 3, calculating a theoretical pitch angle between the optical axis of the CGH and the aspherical mirror to be calibrated; 4, transferring the angle reference of the CGH to a first theodolite; and step 5, installing the to-be-calibrated fine measurement mirror on the to-be-calibrated aspherical mirror.

The invention relates to an aerosol particle scattering characteristic experimental platform and experimental method based on a Pockels effect, and belongs to the technical field of optical measurement. The experimental platform comprises an optical platform, an aerosol particle transport system, an optical path system and a data processing system, the aerosol particle conveying system comprises a combustion chamber, a dust aerosol generator, a water mist aerosol generator, a pipeline and an aerosol jet hole; the combustion chamber, the dust aerosol generator and the water mist aerosol generator are all placed outside a room where the optical platform is located, and the light path system is placed on the indoor optical platform; all parts of the data processing system are placed inside or on the top of the cabinet, and the cabinet is close to the optical platform. According to the aerosol particle scattering characteristic experiment platform based on the Pockels effect, the electro-optical modulator based on the Pockels effect and the phase-locked demodulation technology are used, the Mueller matrix measurement time can be shortened, and the measurement precision is improved.

The invention relates to the technical field of forensic examination, and discloses a forensic diatom automatic scanning and interpretation system based on optical microscopic imaging and AI, which comprises an automatic scanning imaging optical platform, an embedded high-performance all-in-one computer and an artificial intelligence recognition algorithm module. The all-in-one computer is configured to control the optical platform to execute XY-axis automatic scanning and Z-axis automatic focusing, and the automatic focusing is realized based on a definition evaluation function and a search algorithm to obtain a clear field-of-view image; and the artificial intelligence recognition algorithm module is configured to call a diatom target detection model and a diatom form classification model to carry out automatic detection and morphological classification on diatom targets in the clear view field image, and can also comprise an online learning and image library expansion mechanism. The problems that forensic diatom inspection depends on manpower, efficiency is low, interpretation is subjective, and an automatic system lacks accurate focusing and self-adaptive capacity are solved.

The application provides a pose adjustment system for a collimator and a wavefront analyzer, wherein the pose adjustment system comprises a laser, a light path transmission assembly and a light path correction plate, the light path correction plate is provided with a light transmission hole, the laser is arranged at a first position of an optical platform, the wavefront analyzer is arranged at a second position of the optical platform, and the light path correction plate is arranged at a third position between the light path transmission assembly and the wavefront analyzer, wherein a laser beam emitted by the laser is transmitted through the light path transmission assembly, projected onto a target surface of the wavefront analyzer through the light transmission hole of the light path correction plate and the collimator, and a light spot is formed on the target surface, and according to the light spot position of the light spot on the target surface, the installation angle of the collimator is adjusted so that the optical axis of the collimator coincides with the optical axis of the wavefront analyzer. The effect that the collimator installed on the wavefront analyzer is accurately adjusted based on the received light rays of the collimator is achieved.

The invention provides an automatic coupling device for a fast-axis beam of a micro-channel laser stack array, and relates to the technical field of semiconductor lasers. The device comprises an optical platform, and the optical platform is provided with a stack array adjusting subassembly, a power-up subassembly, a UV curing subassembly, a lens adjusting subassembly, a dispensing subassembly, a near-field detection subassembly and a far-field detection subassembly. The stack array adjusting part is used for installing the stack array, and the power-up part is used for powering up the stack array. And the UV curing subassembly is used for curing the ultraviolet glue. And the lens adjusting subassembly and the dispensing subassembly are respectively used for adjusting the position of the fast axis collimating lens and dispensing. The SAC lens is arranged on a sliding plate of the dispensing subassembly through a fixing rod, during coupling, laser emitted by the micro-channel laser sequentially passes through the fast axis collimating lens and the SAC lens and then is divided into a far-field light beam and a near-field light beam by the beam splitter prism, the near-field light beam enters the near-field detection subassembly, and the far-field light beam enters the far-field detection subassembly. The device effectively solves the problems of low production efficiency, poor coupling precision and the like in the existing coupling mode.

This invention relates to a detector support structure, specifically a space payload detector support structure and installation method that combines vibration isolation and heat dissipation. It primarily addresses the technical problem that existing detector support structures cannot simultaneously solve the vibration isolation and heat dissipation issues of space payload detectors. The structure includes a heat sink, a flexible heat-conducting cable, a heat-conducting plate, and a bracket. The heat sink is connected to the temperature control surface of the external space payload. One end of the flexible heat-conducting cable is connected to the heat sink, and the other end is connected to the heat-conducting plate. The heat-conducting plate has a glue injection groove, a temperature probe mounting groove, and a fixing hole on its end face. The detector circuit board and the detector body are respectively disposed on the upper and lower end faces of the heat-conducting plate, and the detector pins are connected to corresponding holes on the detector circuit board. The temperature probe is installed in the temperature probe mounting hole. The bracket is connected to both the detector circuit board and the external optical platform. This detector support structure effectively combines vibration isolation and heat dissipation.

The invention relates to a mobile laser scanning microscope (100) comprising: a chassis (10) with rollers (12), an optical table (30) connected to the chassis (10) via a vibration damper (20), an upper optical box (40) containing a scanning head (42) with acousto-optical deflectors, a pillar (60) connecting the upper optical box (40) to the optical table (30) and holding it at a distance above therefrom, a stage (31) arranged on the optical table (30), a microscope module (32) arranged above the stage (31) and comprising a microscope objective (33) optically coupled to the scanning head (42) and at least one detector (75a, 75b), at least one laser (35) arranged on the optical table (30), an optical beam path (36) guiding a beam of the at least one laser (35) from the at least one laser (35) through the upper optical box (40) to the objective (33), compartments (17) connected to the chassis (10) below the optical table (30) and housing power supplies (15) and control systems (16) of the microscope (100), and a light barrier system (50) having a cover (52) covering units arranged on the optical table (30).

The present invention provides a flexible electrode automatic implantation surgical system, belonging to the field of electrode implantation surgical systems, comprising an implantation robot, a flexible electrode fixing platform, an optoelectronic navigator, a first positioning marker, a second positioning marker, a third positioning marker, a cranial support plate, and an optical platform; the implantation robot can be moved to the side of the optical platform, and the flexible electrode fixing platform is fixed on the optical platform; a first positioning marker is arranged on the cranial support plate, a second positioning marker is arranged on the implantation head at the end of the implantation robot, and a third positioning marker is arranged on the flexible electrode fixing platform, for unifying the position and posture information of the implantation robot, the flexible electrode fixing platform, and the cranial support plate into the optoelectronic navigator coordinate system; the optoelectronic navigator automatically adjusts the flexible electrode and cranial support plate to the working area of ​​the implantation robot. The present invention does not require human intervention and effectively improves the efficiency of implantation surgery.

The invention belongs to the field of water lubricated bearings, and discloses a magnetic-water composite bearing test bed capable of reconstructing a magnetic steel array, which comprises a precise optical platform, and a driving transmission assembly, a multi-dimensional load loading assembly and a tested magnetic-water composite bearing assembly which are fixedly arranged on the precise optical platform, the driving transmission assembly and the to-be-tested magnetic-water composite bearing assembly are sequentially arranged along the same horizontal axis, the output end of the driving transmission assembly is connected with the middle diaphragm coupling through a flat key in a matched mode, and the middle diaphragm coupling is connected with a tail shaft of the to-be-tested magnetic-water composite bearing assembly through a flat key in a matched mode. The multi-dimensional load loading assembly is arranged right above the tested magnetic-water composite bearing assembly in spatial arrangement, and the loading output end of the multi-dimensional load loading assembly is connected with an upper section stator of the tested magnetic-water composite bearing assembly through a servo electric cylinder connecting plate. The method has the following advantages: dual reconstruction of the magnetic circuit topology and the microscopic air gap is realized; the loading mode is real, and working condition simulation is accurate; dismounting and maintenance are convenient and experiment efficiency is high.

This application discloses a rotation angle measurement device and method for a MEMS array, relating to the field of MEMS measurement. The device and method include: a laser light source disposed on one side of an optical platform; an optical platform for placing and moving the MEMS array; a projection plane disposed above the other side of the optical platform and capable of moving up and down; an industrial camera disposed in correspondence with the projection plane; a control unit connected to the optical platform, the MEMS array, and the industrial camera; and a control unit connected to the optical platform, the MEMS array, and the industrial camera. The control unit rotates the mirror to be measured in a certain direction by changing the voltage of the pin corresponding to the mirror to be measured in the MEMS array. The control unit also controls the industrial camera to capture an image of the projection plane and mark the coordinates of the light spot on the image, thereby determining the correspondence between different pin voltages and the light spot coordinates, and ultimately plotting a voltage-angle response curve. This application does not require precise calibration of the angle of the incident light and can automatically and accurately measure the rotation angle of the MEMS array even when the angle of change is very small.

The application discloses a kind of laser semi-active seeker testing system and method, system includes: optical platform, laser target simulation unit, seeker fixed seat, three-axis turntable and stepper motor etc.Modular.The laser target simulation unit is used to simulate the real echo signal generated after laser irradiation to target;The seeker fixed seat is installed on three-axis turntable, three-axis turntable is installed on optical platform and is driven by stepper motor.Laser target simulation unit, laser semi-active seeker and stepper motor are respectively connected with host computer communication.The application is applicable to miniature laser semi-active seeker, and can test the working distance, field angle, responsivity and multiple performance parameters of miniature laser semi-active seeker synchronously.

The application discloses the technical field of optical platform, and particularly provides an optical platform with good vibration isolation effect, which comprises an optical platform body, a vibration isolation device and a load-bearing damping device, the optical platform body is supported and connected through the vibration isolation device and the load-bearing damping device, and the optical platform body can stably place optical equipment, the vibration isolation device is arranged around the bottom of the optical platform body, and the vibration isolation device can isolate vibration of the four corners of the bottom of the optical platform body, the application can isolate the vertical vibration direction of the placing platform, increase the vertical vibration isolation capacity of the placing platform, and isolate the side of the placing platform and increase the damping capacity of the side of the placing platform.

The application is directed to a locking adjustment assembly for an optical aiming device. The locking adjustment assembly is usable across different optical platforms regardless of the focal length of a particular optical platform. The locking adjustment assembly is operationally configured to be reset to a zero position. The locking adjustment assembly may also provide an automatic lock at a zero position.

The utility model discloses an optical element surface detection equipment, including optical platform, X axis linear displacement module, optical element bearing platform, optical element surface detection unit, be equipped with the protection cover of the X axis linear displacement module, optical element bearing platform, optical element surface detection unit cover in its inside on optical platform, optical element bearing platform includes the servo turntable of being located on the sliding platform of X axis linear displacement module, is located on the turntable of servo turntable's deflection platform, optical element surface detection unit is arranged in the outside of X axis linear displacement module close to the middle position, and the detection head of optical element surface detection unit is perpendicular to the X axis linear displacement module, and the bottom of optical element surface detection unit is equipped with Y axis linear displacement module, and Y axis linear displacement module bottom is equipped with Z axis linear displacement module, and the bottom fixed connection of Z axis linear displacement module is on optical platform, and this scheme is favorable to reduce the influence of vibration factor and improve the accuracy of detection.

The invention relates to an optical performance testing device which comprises an optical platform, a glass support, an HUD clamp and a testing platform deck. One end of the glass support is rotatably connected with the optical platform, a plurality of soft supporting shaft assemblies are arranged on the glass support, and the soft supporting shaft assemblies are used for supporting and being connected with a windshield; the HUD clamp is arranged between the glass support and the optical platform, and the test carrying platform is movably arranged on the optical platform. The optical performance testing device can adapt to various HUD products, the position of the testing platform deck can be flexibly adjusted in multiple directions, the angle of the windshield support can also be finely adjusted, a tester can conveniently and rapidly configure the testing platform deck according to different testing requirements, and the testing efficiency is improved.

The application provides a time delay interferometric ground semi-physical experimental verification scheme, which comprises the following steps: (1) based on a space gravitational wave detection task and a load configuration scheme, acquiring a space gravitational wave detection task core measurement, and recording measurement data; (2) constructing an algebraic relationship of a time delay interferometric scheme capable of effectively eliminating laser frequency noise and secondary noise such as optical platform jitter, and calculating a first generation time delay interference and a first generation basic combination solution according to the algebraic relationship; (3) repeating the above step (2) for multiple rounds, compensating for the difference of the equivalent interference measurement arm length, and further suppressing laser frequency noise. The application has reasonable concept, and a semi-physical simulation platform of an equivalent million kilometer arm length unequal arm Michelson interferometer is built by combining a lock arm frequency stabilization system and an electronic phase delay system, so that effective suppression of laser frequency noise is realized.

This invention discloses a shape-free measurement method for spur gears based on a single set of line structured light. The method includes: constructing an optical platform coordinate system; calibrating the line structured light coordinate system using a spherical calibration body; calibrating the rotation center of a precision turntable; installing the spur gear under test and establishing its coordinate system; adjusting the position of the line structured light probe so that its measurement field of view covers the spur gear from the root circle to the addendum circle; mounting the spur gear on the precision turntable and driving it to rotate at a uniform speed; the line structured light probe scanning and acquiring the spur gear contour point cloud data and circular grating angle information to obtain three-dimensional point cloud data of the tooth surface; based on the three-dimensional point cloud data of the tooth surface, extracting the addendum circle, root circle, and involute tooth profile, and calculating the spur gear parameters; performing reverse three-dimensional tooth surface identification on the modified spur gear to generate a three-dimensional deviation map; outputting the measurement results and printing a report. This invention solves the problems of rapid shape-free measurement of spur gears with unknown basic parameters, tooth surface identification of modified gears, and three-dimensional deviation characterization of the tooth surface.

This utility model relates to a thermal resistance testing system for electronic packaged devices, including an optical platform with a stage on the platform. An adjustable probe assembly, an imaging system, and a fixing mechanism are arranged around the stage. The adjustable probe assembly consists of a position adjustment mechanism and probe stages. The position adjustment mechanism includes symmetrically arranged longitudinal slide rails, a transverse guide plate sliding on the longitudinal slide rails, and a transverse slide plate sliding on the transverse guide plate. Two sets of probe stages are mounted on the transverse slide plate. The imaging system includes a microscope adjustment frame, on which a CCD camera assembly and a display screen are mounted. This utility model enables circuit connections for electronic packaged devices of different packaging forms and sizes, especially for electronic packaged devices with a small number of pins, avoiding multiple soldering of the device pins and improving both testing efficiency and thermal resistance testing efficiency.

The invention provides a fluid-solid coupling experiment system for a vortex ring and a flexible body, and relates to the technical field of fluid-solid coupling experiments.The fluid-solid coupling experiment system for the vortex ring and the flexible body comprises an experiment cabin module and a push type vortex ring generation module, and the experiment cabin module comprises an experiment cabin body, a laser mechanism, the flexible body and a particle generator; the flexible body is hung in the middle of the experiment module body, the laser mechanisms are arranged on the two sides of the flexible body respectively, the particle generator is arranged outside the experiment module body, the output end of the particle generator is communicated with the interior of the experiment module body, and the push type vortex ring generation module is arranged on one side of the experiment module body. The propelling type vortex ring generation module is used for generating a vortex ring facing the flexible body in the experiment cabin body, and the experiment cabin body module and the propelling type vortex ring generation module are used for being arranged on an optical platform. According to the invention, the accuracy of the fluid-solid coupling experiment of the vortex ring and the flexible body can be effectively improved.

The application provides a combined bottom plate structure of a laser, which is a multi-layer plate integrated structure fixedly connected to the bottom of the inner cavity of the laser, comprising a support plate, a semiconductor refrigerator, a heat insulation pad, a base plate and a mounting plate; the bottom surface of the support plate is fixedly connected to the bottom of the inner cavity of the laser shell; the semiconductor refrigerator and the heat insulation pad form a first square body structure, the bottom surface of the first square body structure is connected to the top surface of the support plate; the mounting plate and the base plate form a second square body structure; the bottom surface of the second square body structure is connected to the top surface of the first square body structure, and the top surface of the second square body structure is an optical platform for bearing a plurality of optical components and absorbing heat. The application also provides a heat dissipation method for the combined bottom plate structure of the laser. The application solves the technical problem that the bottom plate structure of the existing laser cannot simultaneously meet the requirements of high-efficiency heat dissipation, accurate temperature control and stable structure due to the single material.