135 results about "Wavefront sensor" patented technology

The invention relates to the technical field of laser beam shaping, discloses an active test method and system for a circuit breaker, and is used for solving the problem that the self-adaptive shaping capability of a CO2 laser beam is difficult to improve by the existing method. Firstly, a stable light path is constructed, and the stability of the light path is ensured through mechanical limiting, a thermal management module and multi-stage optical alignment; then low-power calibration is carried out, a deformable mirror initial driving table is generated through a least square inversion algorithm, and a flat-topped beam reference is established; data are collected through a wavefront sensor, a high-order mode is reconstructed, the voltage of a deformable mirror is dynamically refreshed, and wavefront control and scanning motion synchronization is ensured in combination with scanning galvanometer time sequence synchronization, closed-loop control and exception handling; monitoring the temperature of the deformable mirror, starting water-cooling adjustment, and correcting the driving table to cope with the heat effect; finally, a safety system is constructed, laser power, wavefront distortion and deformable mirror stroke parameters are monitored, dry gas purging is conducted on the diffractive optical element regularly, and safety guarantee and performance verification of the whole process are achieved.

The invention provides a slit-type spectral imaging method based on filtering phase reconstruction and a grating spectrometer. The method comprises the following steps: measuring wavefront aberration of a slit-type grating imaging spectrometer before slit filtering by using a wavefront sensor; based on a slit filtering principle, reconstructing a phase function after slit filtering by using wavefront aberration before slit filtering; and capturing a slit image, and reconstructing the slit image by using the reconstructed filtered phase function of the slit to obtain a final reconstructed image. According to the method, effective recovery of the slit imaging data of the grating spectrometer based on the slit is realized, the influence of optical aberration and image noise on the spectrum and spatial resolution of the spectrometer is effectively eliminated, and the slit imaging quality is remarkably improved and is close to the diffraction limit.

The invention relates to the technical field of free space optical communication, in particular to an atmospheric turbulence adaptive optical compensation method for wireless laser communication, which comprises the following steps of: performing light beam coarse tracking by using a fast reflector to eliminate tilt drift; monitoring the received light intensity of the wavefront sensor in real time, and setting a threshold value for mode judgment; when a channel is good, a Kalman filtering algorithm is adopted to predict and compensate system delay, modal decoupling is carried out on reconstructed wavefront, a large-stroke deformable mirror is controlled to correct low-frequency large-amplitude aberration, and a micro-electro-mechanical deformable mirror is controlled to correct high-frequency residual error; and when the channel is in deep fading or the detector fails, the blind optimization mode is automatically switched, the state of the large-stroke deformable mirror is locked, and SPGD iterative control is applied to the micro-electro-mechanical deformable mirror based on the communication light intensity. According to the invention, through a double-deformable mirror frequency division cooperation and hybrid sensing strategy, the problems of insufficient bandwidth, limited stroke, easy interruption and the like of a traditional system under strong turbulence are effectively solved, and the optical fiber coupling efficiency and the robustness of a communication link are significantly improved.

The invention provides a fundus camera system integrated with adaptive optics and a correction method, and relates to the technical field of ophthalmology imaging. The fundus camera system comprises a beacon light source, an imaging light source and an imaging sensor; the device comprises a wavefront sensor, a wavefront correction device and a control module, and the wavefront correction device comprises a focusing lens group and a deformable reflector; the focusing lens group and the deformable reflector are arranged in the same light path from the beacon light source to human eyes and from the human eyes to the wavefront sensor; moreover, the control module executes a two-step closed-loop control strategy of first focusing and second correction: firstly, based on a first measurement result of the wavefront sensor, the focusing lens group is driven to move so as to compensate low-order aberration; and after the focusing is completed, the deformable reflector is driven to deform based on the subsequent measurement result of the wavefront sensor so as to compensate the high-order aberration in a closed-loop manner. On the basis of inheriting the advantage of rapid focusing in the prior art, the self-adaptive optical technology is further integrated, so that the limitation of high-order aberration on resolution is solved.

A system and a method for measuring, correcting, and implementing real-time adjustments for aero-optical effects for vehicle-based optical systems used in high speed or turbulent scenarios are provided. The system and method may include obtaining, via an imaging system, a wavefront measurement of air flow in a high speed or turbulent environment. The imaging system may include a wavefront sensor and optical components within a module and configured for manipulating a laser beam, and an optical window for transmitting the laser beam in-and-out through the optical window (e.g., in a beam director or “turret”). The imaging system may comprise, outside the module, a reflector or mirror positioned along an optical axis and configured to receive and reflect the laser beam from the optical window. The method may include determining wavefront distortions of the laser beam based on the wavefront measurement and determining optical degradation based on the wavefront distortions.

The invention discloses a self-adaptive optical distortion compensation device and compensation method based on high-speed closed-loop control, and the device comprises an optical path front-end interface which is used for connecting a coupling wind tunnel or a laser emission system; the wavefront sensor is used for measuring a local wavefront slope by adopting a distributed array; the FPGA controller comprises a wavefront reconstruction processor and a closed-loop logic controller and is used for reconstructing wavefront and generating a control instruction; the MEMS deformable mirror array comprises a plurality of MEMS drivers and is used for correcting a wavefront phase; the feedback monitoring module is used for performing dual verification through deformation capacitance measurement and CCD image feedback; and the imaging / laser output end is used for converting the corrected optical signal into an image and outputting the image. The method can be widely applied to the fields of high-speed aircraft wind tunnel testing, laser communication, infrared imaging guide head calibration, high-energy laser beam shaping and the like, a programmable hardware platform, a high-speed parallel operation structure and a predictive control algorithm are introduced, and unprecedented sub-microsecond closed-loop compensation is achieved.

This invention relates to an interferometric measurement method and apparatus for large warp wafers, belonging to the field of optical detection and semiconductor measurement technology. The detection light is polarized and birefringently split to form P-beams and S-beams, which are then further divided into P-reference beams, S-silicon beams, S-reference beams, and P-silicon beams, respectively. By adjusting the spatial orientation of the reference mirror and the wafer under test, and using an aperture for spatial filtering, the P-reference beam and S-silicon beam are allowed to enter the subsequent optical path, while the S-reference beam and P-silicon beam are blocked. The S-silicon beam forms a measurement wavefront carrying information about the surface shape of the wafer under test. The P-reference beam is modulated by a deformable mirror to form a modulated reference wavefront similar to the measurement wavefront. The two form a resolvable interference fringe pattern at the camera. A wavefront sensor measures the surface shape information of the deformable mirror, and a calculation system obtains the surface shape information of the wafer under test based on the deformable mirror surface shape information and the relative surface shape change. This invention can reduce the interference fringe density in the detection of large warp wafers, reduce splicing measurement errors, and improve detection efficiency and accuracy.

This invention relates to the field of optical measurement technology and discloses a distortion measurement method for a PDV and Hartmann wavefront sensor optical system. The method includes acquiring interference data of the measurement environment in which the optical system is located, analyzing and calculating the interference correction index of the measurement environment, classifying the measurement environment into weak or strong interference environments, and correcting the initial distortion in a strong interference environment. This invention introduces a measurement contribution coefficient calculation mechanism based on signal-to-noise ratio, spatial coverage, and dynamic response time constant, which adaptively allocates the weights of different sensors in the fusion process, thereby improving the accuracy and reliability of distortion reconstruction. More importantly, by constructing an environmental interference correction model that includes temperature, vibration acceleration, and air refractive index, and by quantitatively evaluating the measurement environment through the interference correction index, it can effectively correct the initial distortion results in a strong interference environment.

The invention discloses a laser powder bed sheet pattern distortion real-time correction system and method based on a phase type light valve, and relates to the technical field of metal additive manufacturing. The system comprises a polarization laser, a beam expanding and collimating unit, a reflecting mirror, a phase-type spatial light modulator, a reflecting mirror, a relay optical system, a galvanometer / field lens system, a movable spectroscope, a reference plane mirror and a forming cylinder. A double-loop correction system with a position sensitive detector as an absolute reference and a wavefront sensor as direct feedback is constructed, information of the position sensitive detector and the wavefront sensor is unified in a phase domain through a frequency domain fusion algorithm, and a comprehensive compensation phase diagram capable of completing pattern generation and distortion correction at the same time is generated. And loading to a phase type light valve to carry out high-power laser patterning modulation, and melting metal powder of a powder bed.

The present application relates to the technical field of laser detection, in particular to a laser striking target detection device and method for terminal defense. Firstly, the peak intensity of the light spot and the deflection vector of each channel of the wavefront sensor are collected in a single frame detection period, the real-time light intensity characteristics and the circuit noise are combined to generate a servo light intensity filtering threshold, the effective channel set with calculation value is screened out by dynamically adapting to the battlefield noise fluctuation; the direction consistency of the deflection vectors of the adjacent effective channels is calculated, the light spot connected weight network with coherent weight is constructed, the sub-aperture grouping area is obtained by clustering, and the automatic aggregation of the scattered same target light spots is realized; then the integrated light intensity connectivity is generated by fusing the peak intensity of the light spot and the local connected weight, the signal intensity and the spatial correlation attribute are considered, the real target tracking effective area is accurately stripped out, and finally the calculation accuracy is greatly improved by relying on the channel number characteristics and the deflection vector calculation servo command in the area.

Device for modulating a laser beam, including a deformable mirror with a reflective surface to receive an incident laser beam and to reflect a corresponding reflected laser beam provided with an output wavefront, and an actuator for deforming the reflective surface. The device also includes a detection system having an electromagnetic radiation source to emit a control beam incident on the reflective surface, and a wavefront sensor to intercept the reflected control beam reflected by the reflective surface to detect measurements of the wavefront of the reflected control beam and generate corresponding measurement signals. The device further includes a logic control unit, which receives the measurement signals, associates them with corresponding forms of the output wavefront of the reflected laser beam, actuates the actuator to deform the reflective surface in order to feedback control the output wavefront of the reflected laser beam.

The invention discloses a phase difference wavefront-image estimation method based on depth image prior. The method comprises the following steps: firstly, constructing a forward physical model of an incoherent imaging system, and generating an observation image with out-of-focus aberration by introducing phase difference; and then using a depth image prior network to jointly optimize image domain loss and wavefront domain loss under the condition of no external training data by taking the consistency of an observation image and a model generation image as a constraint so as to simultaneously obtain a high-quality recovered image and accurate wavefront estimation. The method provided by the invention can realize accurate wavefront estimation and high-quality image recovery under the condition of large aberration under the condition of only needing a small number of acquired images, and has the advantages of strong anti-noise capability, no need of an additional wavefront sensor and low system complexity. The method can be widely applied to fluorescence microscopic imaging and other high-resolution microscopic imaging technologies, and the imaging resolution and the image quality are improved.

The invention discloses an optical view field expansion and dynamic distortion compensation method for light field display, and particularly relates to the technical field of light field display, and the method comprises the steps: determining a configuration scheme through building a collaborative structure parameter model of a microlens array and a free-form surface optical element; then, the focal length distribution of the micro-lens array and the curvature distribution of the free-form surface optical element are adjusted, so that the expansion of an optical view field is realized; acquiring light information in an expanded view field range by using a wavefront sensor, and establishing an optical distortion mathematical model; calculating wavefront error distribution based on an optical error inversion algorithm and generating a compensation control signal; and adjusting response parameters of the optical element according to the compensation control signal, correcting the light wavefront, feeding back the corrected light field information to update wavefront error distribution, and iteratively generating a new compensation control signal. According to the invention, a light field display field angle can be effectively expanded, distortion after field expansion is reduced, and good application compatibility is achieved.

The invention relates to a method and system for measuring the lateral velocity of a target based on composite modulation of polarization and orbital angular momentum, and belongs to the field of laser velocity measurement. The invention aims to solve the problem that existing laser lateral velocity measurement methods and technologies cannot accurately measure the lateral velocity of a moving target in atmospheric turbulence and determine the direction of the velocity. The method of the invention comprises the following steps: S1. Modulating a laser signal to generate a dual-mode vortex beam with 1st and 4th order superposition, compositely modulating the laser signal with polarization and orbital angular momentum with a Gaussian beam to generate a modulation signal, and irradiating the target object with atmospheric turbulence to generate an echo signal; S2. Using a wavefront sensor to obtain the distorted phase of the polarization component of the Gaussian beam, generating a compensation phase to perform phase correction on the dual-mode vortex beam; S3. Using an array detector to detect the polarization component of the dual-mode vortex beam after phase compensation correction, the polarization component of the dual-mode vortex beam is used to obtain three lateral Doppler effect spot areas of the echo light field, which are then detected and calculated by the array detector to determine the magnitude and direction of the lateral velocity of the moving target.

This invention discloses a method for restoring turbulent degradation images based on complex amplitude detection, belonging to the field of computational optics imaging technology. This method constructs a computational optics imaging system without a hardware correction unit. It utilizes a wavefront sensor and an imaging sensor to simultaneously acquire Hartmann images and target degradation images. A computational unit performs wavefront complex amplitude reconstruction and aberration correction. Based on this, a physically constrained end-to-end neural network architecture is designed. By reconstructing the wavefront complex amplitude, it achieves accurate mapping and inference from the Hartmann image to the point spread function of the imaging system. Finally, a multi-scale deconvolutional network is combined to complete high-quality restoration of the turbulent degradation image. This invention eliminates the need for a hardware corrector, overcomes the physical limitations of traditional adaptive optics, effectively solves the problem of insufficient point spread function accuracy, and enables time-delay-free and highly efficient turbulent image restoration under low-cost conditions.

A system for illuminating a target in the presence of atmospheric turbulence includes a coherent beam combining (CBC) subsystem, an atmospheric wave-front sensor (AWS) subsystem, a multi-channel photo-detector (MCPD) subsystem, an auxiliary light source, and a receiving optical aperture. The CBC subsystem forms a multiplicity of CBC sub-beams and an reference beam, all of which fall in a wavelength band that is different from that of the auxiliary light source. The auxiliary light source may be a laser or a portion of the solar spectrum of the Sun. An AWS controller provides closed-loop compensation of atmospheric turbulence for low power auxiliary reflection and reference beams. A MCPD controller provides closed-loop compensation of high-frequency laser noise and transfers the wavefront correction from the reference to the high power CBC laser. The frequency of the MCPD controller is at least an order of magnitude greater than the bandwidth of the AWS controller.

The application discloses a kind of based on voltage modulation's deformable mirror slope response matrix measurement method and device, belong to adaptive optics technical field, this method includes: the range of influence of single driver is calculated, and driver is grouped;According to the sampling frequency of Hartmann wavefront sensor, the frequency response characteristics of deformable mirror, generate the voltage control signal for controlling deformable mirror;According to driver group number, voltage control signal is applied to all drivers and the wavefront sensor slope signal of each group driver is recorded;Wavefront sensor slope signal is bidirectional filtering, the slope signal corresponding to each driver is recovered, the difference of each slope signal and its corresponding voltage control signal phase is calculated, voltage control signal is truncated, and the response matrix of deformable mirror is obtained.The application realizes that the time of deformable mirror slope response matrix measurement is effectively shortened, avoids the problem of the decline of response matrix calculation accuracy due to voltage control signal and slope signal phase misalignment.

The invention discloses a defect detection method based on light wavefront. The defect detection method comprises the following steps: arranging an object to be detected on a base; providing a laser device which comprises a laser pump and a laser light source and emits a first laser beam towards the detection part of the object to be detected; providing a first light wavefront sensor, wherein the first light wavefront sensor receives first reflected light of the first laser beam reflected by the detection part of the to-be-detected object to generate a first reflected light signal, or receives first penetrating light of the first laser beam penetrating through the detection part of the to-be-detected object to generate a first penetrating light signal; providing a waveform generator which is electrically connected with the first optical wavefront sensor, and receiving the first reflected light signal or the first penetrating light signal by the waveform generator to generate a first detection oscillogram; the invention further provides a defect detection system based on the light wavefront.

An anisoplanatic aberration correction method and apparatus for adaptive optical linear beam scanning imaging. The method comprises: in an adaptive optical linear beam scanning imaging system, performing temporal correction on an anisoplanatic region aberration in a linear beam scanning direction, and performing regional correction on an anisoplanatic region aberration in a linear beam direction. According to the method, the limitation of an isoplanatic region on an adaptive optical imaging field of view can be overcome, and wide field of view aberration correction and high-resolution imaging of a retina is realized. According to the provided method and apparatus for temporal and regional correction of a wide field of view anisoplanatic aberration, the wide field of view aberration correction can be completed by means of only a single wavefront sensor and a single wavefront corrector, such that almost none of the system complexities is increased.

The invention relates to the technical field of optics, and discloses a wide-viewing-angle wavefront sensing device, which constructs an image space telecentric light path through the combination of a diaphragm and a lens group and the arrangement of the diaphragm at the object space focus of the lens group, so that the wavefront of large-angle incidence becomes the wavefront of the incidence of main light rays vertical to a micro lens array after passing through the image space telecentric light path, and the wavefront of the incidence of the main light rays vertical to the micro lens array is formed. The photoelectric sensor is located on the focal plane of the micro-lens array, so that after incident wavefronts at different angles are incident through the diaphragm and are refracted by the lens group, main light rays of the refracted incident wavefronts are vertically and orthogonally incident into the plane of the micro-lens array, are segmented by the micro-lens array and then are transmitted forwards; focusing light spots corresponding to incident wavefronts are formed on the photoelectric sensor, so that the angle detection range of the wavefront sensor is expanded, the wavefront reconstruction precision is improved, and wavefront information of incident light beams in a large field of view is measured at the same time.

This invention discloses a calibration method, apparatus, device, medium, and product. The calibration method relates to the field of active alignment calibration technology in optical module production. The method includes: controlling a first sensor conveying platform to move an image sensor to a first position; controlling a second sensor conveying platform to move a wavefront sensor to the first position, and determining a reference Zernike coefficient based on a second image acquired by the wavefront sensor; controlling an active calibration gripper to tilt multiple times, and determining a sensitivity parameter and an offset based on a third image acquired by the wavefront sensor after each tilt and the reference Zernike coefficient; constructing a target model based on the reference Zernike coefficient, sensitivity parameter, and offset; controlling the second sensor conveying platform to move the wavefront sensor to a second position, and determining a target tilt angle based on the current vertical tilt coefficient, the current horizontal tilt coefficient, and the target model; and performing calibration based on the target tilt angle.

This invention provides a multi-channel receiving SLM partition-controlled adaptive optics alignment system and method. The method includes: a beam to be aligned in a perturbed channel is decomposed into a target beam and a reference beam after passing through a beam splitter; a wavefront sensor receives the reference beam, acquires the intensity distribution and phase distribution of the reference beam, and inputs them into a processor; the processor uses a preset SLM multi-zone control algorithm to partition the liquid crystal of the phase-type SLM, and matches each selected zone with each optical receiver one by one, generating a phase hologram for each selected zone and inputting it into the liquid crystal controller; each selected zone of the SLM liquid crystal performs partition alignment and outputs the received target beam; this invention can achieve multi-point focusing, dynamic alignment, and power allocation of the received beam through a single SLM, supports multi-point simultaneous alignment and arbitrary power allocation of a multi-channel receiving UOWC system under dynamic conditions, and has outstanding advantages such as high flexibility, good real-time performance, and strong scalability.

The application provides a complex amplitude SLM adaptive optical path alignment system and method for aligning a to-be-aligned light beam in a disturbed channel, wherein the to-be-aligned light beam in the disturbed channel is decomposed into target light and reference light after passing through a beam splitter; a wavefront sensor receives the reference light, acquires phase information of the reference light and inputs the phase information into a processor; the processor calculates a superimposed compensation amount of complex amplitude regulation according to an alignment position and generates a phase hologram, and inputs the phase hologram into a liquid crystal controller; the phase hologram comprises a plurality of concentric circles, and is used for simulating a ring-shaped blazed grating of focused light rays at a preset alignment position; a liquid crystal of a phase SLM receives the target light, the liquid crystal controller converts the phase hologram into a control voltage, and controls the liquid crystal to perform alignment output on the target light; and the application can continuously correct and align the light beam transmitted in the disturbed optical channel based on pure phase SLM complex amplitude regulation.

The invention discloses a solar adaptive telescope which comprises a primary mirror, a secondary mirror, a front reflector group, a wavefront corrector, a rear reflector group, a beam splitter, an observation system, a wavefront sensor and a wavefront controller. A pupil plane conjugate position is constructed in a reflex light path of the telescope, and a wavefront corrector is placed, so that high integration of the solar telescope and the adaptive optical system is realized. Compared with a method for transforming a secondary mirror or a third mirror, a fourth mirror and the like of the telescope into a high-precision deformation secondary mirror, the method does not change the main body structure of the original telescope, only needs to reasonably adjust the reflex light path of the original telescope, and avoids redesign and structural transformation of systems such as a support system and a thermal control system caused by adopting a complex deformation secondary mirror. The invention has the advantages of wide application range, strong flexibility, simplified optical system structure, reduced number of optical elements and the like, and can effectively reduce the inherent aberration and stray light of the system and improve the utilization efficiency of solar energy.

The invention discloses a casting layer stress prediction method and system based on an artificial neural network and a storage medium, and the method comprises the steps: taking a silicon wafer as an electroforming substrate, polishing one surface of the electroforming substrate, and arranging a conductive layer on the other surface; an electroforming tank, a collimation light source and a wavefront sensor are configured, and the relative positions of the collimation light source, the wavefront sensor and the electroforming tank are adjusted, so that a light beam of the collimation light source is reflected by the polished surface of the silicon wafer to enter the wavefront sensor; performing electroforming in an electroforming tank by adopting direct current or pulse current; electroforming process data and laser wavefront curvature radius are acquired through a data acquisition module; calculating a stress value according to the laser wavefront curvature radius, and converting stress value data and electroforming process data into a neural network adaptive format; selecting a network type, an activation function and a hyper-parameter, and training an artificial neural network model to fit a nonlinear relationship between an electroforming parameter and a stress value; and stress prediction: inputting the electroforming parameters to the artificial neural network model, and outputting a predicted casting layer stress value.

A wavefront tester for measuring the wavefront of a sample via an optical path, the wavefront tester including a mirror, an imaging lens, an aperture, a beam splitter, a wavefront sensor, a lens selection system including a plurality of optical lenses, a suitable optical lens of which is commensurate with the sample and selected to be disposed in the optical path and a light source directed in a first direction through the optical path by the beam splitter through the suitable optical lens and the sample to the mirror such that the light source is redirected in a second direction opposite the first direction through the optical path and the beam splitter, the aperture and the imaging lens to be received at the wavefront sensor.

The invention discloses a control method and device for a multispectral photon sieve self-powered camera and a medium, and the method comprises the steps: carrying out the multiband spectrum separation of incident light through a nano-structure filtering layer, obtaining optical signals of different wavelengths, and transmitting the separated optical signals to a photon storage and calculation integrated chip for optical domain feature extraction; incident light is reflected to a wavefront sensor through a beam splitter prism for wavefront distortion detection, and micromirror adjustment parameters are calculated based on wavefront distortion data so as to drive a micromirror execution mechanism to dynamically compensate aberration; environment energy is collected through a flexible solar cell and a vibration energy collector, and the environment energy is converted into electric energy; the electric energy is stored in a storage battery, the corresponding electric quantity state of the storage battery is monitored, and the working mode of the camera is dynamically switched according to the electric quantity state; the working mode comprises a full-function mode and a low-power-consumption mode.

The application discloses a kind of adaptive optics real-time controller hardware architecture based on multi-core CPU and GPU.Shack-Hartmann wavefront sensor sub-aperture slope calculation, wavefront recovery and wavefront control are completed in parallel by multi-core CPU and GPU using the real-time controller hardware architecture.The application uses general multi-core CPU and GPU as computing platform, after receiving image data in multi-core CPU, part of sub-aperture image data is transmitted to GPU by PCIE bus using a CPU core, and wavefront calculation task of the part of sub-aperture is completed by GPU;At the same time, the remaining CPU core is used to complete the remaining sub-aperture wavefront calculation task in parallel, to reduce the purpose of real-time controller calculation delay.The application uses multi-core CPU and GPU in parallel to complete wavefront calculation task, to reduce the effect of adaptive optics real-time controller calculation delay, to meet the real-time requirement of adaptive optics system to real-time controller, especially suitable for next-generation large-aperture ground-based telescope adaptive optics system real-time control.

The invention relates to the technical field of optical precision detection, in particular to a method and a device for calibrating core parameters of a Shack-Hartmann wavefront sensor, which can obtain the distance between a micro-lens array and a camera target surface and the size of a micro-lens unit which are highly related to detection precision through superposition calibration based on plane waves and spherical waves. The theoretical model has high precision. In the calibration scheme, simple and rapid switching based on plane waves and spherical waves can be realized by removing / adding the microscope objective, and few error sources are introduced. In the calibration scheme, high-precision rotation angle monitoring based on an autocollimator and high-precision displacement monitoring based on a displacement sensor are arranged, so that high-precision calibration is ensured.

The invention relates to a distance-driven Gaussian template external expansion-interpolation type Hartmann light spot integrity recovery method, which belongs to the field of signal processing of beam wavefront measurement, and comprises the following steps: preprocessing an original image, and extracting centroid coordinates P0 of all detected light spots; calculating an actually measured average center distance d; dynamically generating a Gaussian template; taking P0 as a seed, carrying out row and column tracking external expansion and internal hole interpolation, and carrying out continuous iteration until the number of newly added points is smaller than Kmin or the maximum number of iterations Nmax is reached; and outputting the integrity light spot list. According to the method, ideal lattice points do not need to be preset, the Gaussian template is generated in real time only by using the average center distance of the detected light spots of the current frame, point-by-point external expansion matching is carried out in the row and column directions by taking the distance as the step length, and meanwhile, hole interpolation is carried out on the interior of a dot matrix; therefore, self-growth and integrity reconstruction of missing light spots are realized under the conditions of complex illumination and low signal-to-noise ratio, and the robustness and the measurement precision of the Hartmann wavefront sensor are remarkably improved.