25 results about "Zemax" patented technology

The invention relates to a multi-agent large model code generation method and system in the optical field, relates to the technical field of optical design, and aims to solve the technical problems that in the prior art, optical terminologies are insufficiently understood, and optical performance requirements and constraints cannot be correctly extracted. The optical field multi-agent large model code generation system comprises a demand understanding agent, an optical expert agent, an architecture design agent, a script generation module, a test and feedback module, a control scheduling module and an output module. According to the multi-agent large model code generation method and system in the optical field, the accuracy of understanding optical professional requirements is greatly improved; the capability of automatically generating optical software scripts such as Zemax is higher; multiple rounds of test feedback and control scheduling are supported, and the generation accuracy is improved; the overall development period is shortened, and the optical modeling efficiency is higher; the method is more friendly to non-professional users, and the operation threshold is reduced; and the dependence on qualified optical engineers is reduced, and the development cost is reduced.

The invention discloses a method and a device for correcting laser focusing aberration in a transparent material, and belongs to the technical field of laser processing. The method comprises the steps that a machining light path containing an object plane, an aspheric reflector and a 4F device is built in Zemax, the surface type of the aspheric reflector is optimized with the minimum focus aberration as the target, and a rise table is derived; an optical path difference and a laser phase are calculated through Matlab, and a phase diagram is generated; and an actual machining light path is built, and a phase diagram is loaded to achieve low-aberration machining. Simulation optimization and phase modulation are combined, aberration caused by refractive index difference is effectively counteracted, wavefront errors are reduced by 58%, the thickness of a machining damage layer is reduced by 70%, the method is suitable for various transparent materials, the machining precision and the material utilization rate are improved, and the method is suitable for high-precision laser machining scenes.

The invention discloses a telescope parameter efficient optimization method and system based on a Bayesian algorithm and a fluctuation optical TTL coupling noise calculation model, and aims to solve the problem that a fluctuation optical high-precision calculation module is used for improving TTL coupling noise calculation precision in an existing telescope parameter optimization method. And due to frequent calling of a high-time-consumption module, the optimization time is sharply increased, and the efficient design requirement of a space gravitational wave detection task is difficult to meet. According to the method, on the basis of the principle of a Bayesian optimization algorithm, potential optimal to-be-evaluated telescope parameters are searched through an agent model, a collection function and the optimization function of Zermarkes software; and calculating TTL coupling noise of the telescope to be evaluated by combining a light field propagation calculation method based on a wave optics theory with a light field-phase resolving method, carrying out iterative optimization on telescope parameters, and outputting optimal TTL coupling noise and optimal telescope optical parameters.

The invention relates to the technical field of laser spot shaping, in particular to a Zemax-based laser spot shaping lens evaluation function design method, which comprises the steps of constructing a multi-dimensional evaluation function system including angle precision control, spot quality optimization, mechanical constraint integration and a dynamic weight strategy. Multi-target collaborative optimization is achieved through directional quantitative evaluation, aspheric surface correction and the like, the design efficiency and the engineering level are remarkably improved, the problems that in the prior art, the beam expanding angle error is large, light spot edge energy loss is serious, design and machining are disjointed and the like can be solved, the requirements for miniaturization and high precision are met, the manufacturing cost is reduced, and the application prospect is wide. Therefore, the method is suitable for various laser source shaping scenes.

The invention discloses a simulation method and device of an AR optical system, a medium and electronic equipment, and the method comprises the steps: obtaining an initial source file, converting the initial source file into a target file based on a Kogelnik coupling wave theory and a preset volume holographic grating structure requirement, and importing the target file into ZEMAX; acquiring a corresponding luminous source according to preset parameters of the display; obtaining an initial collimation component, converting the initial collimation component into a target collimation component, and importing the target collimation component into the ZEMAX; in a non-sequence mode of ZEMAX, calling a target file, generating a volume holographic grating, and obtaining a holographic waveguide assembly; and connecting the light emitting source, the target collimation assembly, the holographic waveguide assembly and a preset detector to obtain the target AR optical system. Compared with the prior art, simulation of the holographic waveguide assembly and simulation of the integrity of the AR optical system can be achieved, the simulation efficiency is improved, the systematicness, integrity and quality of simulation are improved, and then the optical performance of the optical system in AR equipment is improved.

The present application relates to a kind of method for solving single line laser radar tailing, the method comprises the following steps: S1, by optical simulation software Zemax simulation simulation real laser radar being used, and according to actual situation setting obscuration diaphragm;S2, by the multiple configuration function in optical simulation software realizes the rotation of laser radar, and finds the angle that laser beam of laser radar is just all blocked by shelter;And S3, the transverse and longitudinal diameter size of laser beam is measured in the 3D layout of Zemax sequence mode, and the size of divergence angle is obtained using standard point column chart, collate the transverse and longitudinal diameter size of laser beam measured, finally light-absorbing material is coated to the edge position of shelter structure with this width and length rectangular.The present application solves the problem of single line laser radar tailing, so that single line radar measurement accuracy is greatly improved.

The present invention discloses a double-layer metasurface wide-angle imaging lens with quadratic phase modulation and monochromatic aberration elimination. The double-layer wide-angle imaging lens comprises: a substrate L1, a nano-cylinder array structure layer M1 arranged on the upper surface of L1, and a nano-cylinder array structure layer M2 on the lower surface. M1 is established according to the binary optical surface 2 formula of ZEMAX and has the function of correcting spherical aberration; M2 is modulated by the quadratic phase formula and can eliminate the coma generated after the angled light source is incident and focused. When the imaging lens is working, the angled light source is incident from the dielectric cylinder array structure layer on the top surface of the substrate, passes through L1 and M2, and focuses the light onto the sensor. The present invention uses a nano-cylinder array structure layer, which can be used to focus incident light at a large angle, and can minimize the volume and weight of the system, thereby improving the practical application effect of the imaging lens.

The application discloses a zoom imaging system design method based on light-digital collaborative optimization, belongs to the technical field of computational imaging, adopts a four-piece zoom structure as an initial optical system, uses Zemax to simulate output blurred images and a spatial variable point spread function (PSF), and constructs an end-to-end joint optimization platform through VS Code and Matlab; the digital processing part is based on a block strategy, divides the images and the PSF into n*n blocks, combines boundary extension and gradual fusion technology, uses a Lucy-Richardson algorithm to perform non-blind deblurring processing, and optimizes brightness through dichotomy; finally, the mean square error of the restored image and the original image is fed back to Zemax as an evaluation function to drive the optimization of the optical system. While maintaining the system complexity, the application significantly improves the restoration effect in short-focus and other scenes, and the imaging quality is better than that of a traditional independent design mode.

This invention relates to the field of optical system imaging, specifically to a method for constructing an optical system imaging quality prediction model that takes into account both surface shape error and pose error. The method employs Zernike polynomials to accurately fit the mirror surface shape error caused by bolt preload, and uses the finite element method to simulate the bolt tightening process of the optical system. Based on this, a joint simulation method for the assembly and imaging of a two-mirror optical system is proposed. Using Zernike polynomial fitting as the basic parameter, various mirror surface shape errors and assembly pose deviations are fully considered when using Zemax for optical path imaging simulation. Energy concentration is used as a quantitative evaluation index for imaging quality. An SVR surrogate model containing local and global hybrid kernel functions is established, and sensitivity analysis is performed on mirror surface shape and assembly pose parameters. An assembly dataset is obtained through joint assembly and imaging simulation, and the model is trained to obtain an imaging quality prediction model, enabling rapid and accurate prediction of imaging quality.

The invention discloses a light-digital collaborative optimization zoom imaging system design method, and belongs to the technical field of computational imaging, a four-piece zoom structure is adopted as an initial optical system, Zemax is utilized to simulate and output a blurred image and a spatial variable point spread function (PSF), and an end-to-end joint optimization platform is constructed through VS Code and Matlab; the digital processing part is used for segmenting the image and the PSF into n * n blocks based on a blocking strategy, carrying out non-blind deblurring processing by adopting a Lucy-Richardson algorithm in combination with a boundary expansion and gradient fusion technology, and optimizing the brightness through a dichotomy; and finally, feeding back the mean square error of the restored image and the original image to Zemax as an evaluation function, and driving the optimization of the optical system. According to the invention, while the complexity of the system is maintained, the restoration effect of short-focus and other scenes is remarkably improved, and the imaging quality is superior to that of a traditional independent design mode.

According to the spherical mirror surface shape and parameter synchronous detection method and device, high-precision measurement of the surface shape and the vertex curvature radius can be completed at the same time in the same light path, the defects of multiple optical elements, step-by-step measurement and complex installation and adjustment in a traditional method are overcome, and integrated, lightweight and high-precision synchronous detection of the surface shape and parameters is achieved. The method comprises the following steps: (1) designing a spatial multiplexing computer generated hologram (CGH), carrying out measurement light path modeling in Zemax according to a nominal value of a spherical mirror to be measured, and optimizing to obtain additional phase values of different regions of the CGH; (2) modeling a virtual formal parameter synchronous measurement system; (3) building an actual form parameter synchronous measurement system; (4) carrying out residual wavefront extraction and Zernike fitting; (5) optimizing to obtain a compensation distance; and (6) the curvature radius is obtained through inversion.

The invention discloses a self-adjusting water-guided laser light path focusing device and a self-adjusting water-guided laser light path method implemented by the same, and aims to solve the technical problem of water and light coupling in water-guided laser due to the fact that the intensity and phase of a light beam at different positions are not accurately controlled at present. According to the self-adjusting water-guided laser light path focusing device, a second lens is arranged between a first lens and a third lens, the first lens and the second lens are conical lenses, the third lens is a focusing lens, a first curved surface is arranged close to an incident light source, a second curved surface and a third curved surface are oppositely arranged, and a fourth curved surface and a fifth curved surface are oppositely arranged; according to the self-adjusting water-guided laser light path method, optical simulation is carried out in ZEMAX, and the incident light diameter and the apodization factor of the system are correspondingly set according to requirements; and establishing a corresponding lens group initial model according to the initial parameters, determining the surface types of the first lens, the second lens and the third lens as standard surfaces, and configuring the curvature radiuses, the center thicknesses, the outer diameters and the refractive indexes of the first lens, the second lens and the third lens respectively.

The application discloses an active compensation method for wavefront system error of an interferometer, and provides active compensation for wavefront error introduced by a second collimating lens in a large-aperture interferometer. Firstly, an interferometric reference light path system model is established in optical design software Zemax; a polynomial is used to represent wavefront introduced by the second collimating lens; a self-defined surface type in Zemax is used to realize modeling of surface shape error, material uniformity error, residual stress, clamping deformation, gravity deformation and other system errors of the second collimating lens, and to simulate and analyze the influence of the system errors on the reference wavefront. On the basis of accurate modeling of the interferometric system, system errors caused by the above error sources in the reference wavefront of the large-aperture interferometer are compensated by controlling the surface shape parameters of a deformable mirror. The application accurately models the system errors introduced by the second collimating lens in the reference wavefront, and compensates the wavefront error by controlling the surface sag of the deformable mirror, so that the precision is high and the practicability is good.

The invention relates to the technical field of optical measurement, in particular to a light beam collimation detection method and model based on a digital holographic technology, and the method comprises the steps: designing a digital holographic light path diagram, building a digital holographic light path simulation model in a non-sequence mode of ZEMAX software, and obtaining a hologram through ray tracing; importing the hologram into MATLAB software, performing fast Fourier transform to convert the hologram from a spatial domain to a frequency domain, extracting a positive first-order frequency spectrum in a frequency domain image, and performing image filling on the positive first-order frequency spectrum; inverse Fourier transform is carried out on the image filled with the positive first-order frequency spectrum, so that the image is converted from a frequency domain to a spatial domain, and a wrapped phase diagram of the image is extracted; and whether the light is collimated is judged by observing the shape and the number of the stripes wrapping the phase, so that the light beam collimation detection method based on the digital holographic technology is realized. The method has guiding significance on optical system design, optical image processing and light beam collimation precision improvement.

The application discloses an imaging lens and an image processing method, and belongs to the optical technical field. The imaging lens comprises a zoom objective lens; the zoom objective lens comprises a front fixed group, a zoom group, a compensation group, a rear fixed group and an image plane which are coaxially arranged in sequence from an object side to an image side. The application adopts a positive group compensation, optimizes the zoom system by using Zemax, realizes 10 times continuous zooming of 20mm-200mm only through 7 standard spherical lenses, can realize a larger zoom ratio, has a large focal length range, has good imaging quality of the lens, the system cam curve is smooth without breakpoints, and the processing cost of the zoom objective lens is effectively reduced; the end-to-end mapping of the network is learned through grouping dense connection, the network is trained in an unsupervised mode, the fusion image obtained is superior to a traditional image fusion method in visual intuitive feeling and objective evaluation indexes, and manual design of the active level measurement and the fusion rule is avoided.

The invention discloses an efficient optical energy collection and imaging system and method based on PVG optical pupil contraction, and belongs to the technical field of optical imaging and infrared detection. The system comprises a pupil dilation unit, a polarizer holographic grating (PVG), an optical waveguide device and a detector unit. The pupil contraction unit reduces the aperture of an incident light beam to improve the energy density; the PVG realizes high-efficiency light beam diffraction regulation and control through the design of a fixed period and a Bragg dip angle, and breaks through the limitation of a traditional F number; the optical waveguide expands the beam aperture through multiple total internal reflection, and the luminous flux is improved; the detector receives the light beam and generates a high-resolution image. By combining Zemax simulation optimization parameters, the problems that a traditional system depends on a large lens and is large in size and low in luminous flux are solved, and the system has the advantages of being compact in structure, high in energy collection efficiency and high in resolution imaging and is suitable for infrared detection and uncooled infrared imaging scenes.

The invention provides a method for correcting refractive index of a remodeled artificial lens based on femtosecond laser, which comprises the following steps of: scanning an IOL (input / output lens) by using a femtosecond laser processing platform, processing a diffraction grating, and measuring the refractive index of the processed IOL; s2, a human eye model containing IOL is imported into the ZEMAX, and a diffraction lens machined on the IOL is simulated by selecting a binary plane bifacial type; s3, according to the target diopter, determining a phase polynomial coefficient of a two-dimensional plane, and according to the diffraction efficiency, adjusting diffraction lens parameters, so that the optimized optical system meets a predetermined imaging quality evaluation standard; and S4, converting the surface type parameters of the optimized binary surface 2 into a femtosecond laser scanning path and processing parameters. According to the method, a real material refractive index change value is obtained through experimental measurement and is used as a core input parameter for designing a diffraction lens in ZEMAX, so that a final correction scheme is established on a reliable physical basis, and the correction accuracy and reliability are remarkably improved.

The application provides a diabetic retinopathy deep learning classification model evaluation method, first, a human eye model and fundus camera combined optical system are described, the optical system combines the human eye model and the fundus camera model, realizes high restoration degree and high resolution of the diabetic retinopathy fundus examination simulation, and further based on the method, a diabetic retinopathy simulation parallax image generation method based on computational optics is provided, the method designs a parallax simulation system through ZEMAX, and calculates a simulation parallax image through a point spread function matrix. Based on the generated simulation parallax image, a further deep learning classification model generalization performance test is proposed, and the evaluation method can effectively evaluate the classification performance of the classification model on the target simulation parallax image.

The invention relates to a secondary dispersion objective lens design method based on aberration correction, a secondary dispersion objective lens and a spectrum confocal displacement sensing system, and aims to solve the problems that the gradient refractive index of an existing dispersion objective lens based on a GRIN lens can generate aberration, so that the measurement precision of the spectrum confocal displacement sensing system adopting the dispersion objective lens is low, and the measurement precision is low. And the measurement range of a spectrum confocal displacement sensing system adopting the dispersion objective lens is relatively small. According to the aberration correction-based secondary dispersion objective lens design method provided by the invention, a secondary dispersion objective lens comprises a GRIN optical fiber and a dispersion objective lens group, the GRIN optical fiber is used for carrying out primary dispersion on incident light to form pre-dispersion light, and the dispersion objective lens group is used for carrying out secondary dispersion on the pre-dispersion light to form pre-dispersion light; a physical information neural network (PINN) algorithm is combined with ZEMAX software simulation, comprehensive compensation and correction of aberration of a dispersion objective lens group and a GRIN optical fiber are realized while the dispersion range of the system is expanded, and the design of the system is completed on the basis of the comprehensive compensation and correction of the aberration of the dispersion objective lens group and the GRIN optical fiber.

This invention discloses a full-field metalens, a piezoelectric fiber scanning device, and a two-photon imaging system, belonging to the technical field of two-photon imaging systems. The metalens of this invention uses gallium nitride (GaN) material and includes a substrate, a GaN thin film, and a periodically arranged nanopillar unit structure. The unit period is 400–800 nm, the nanopillar height is 300–800 nm, and the length and width are both 50–600 nm. Based on the generalized Snell's law, image plane field curvature and off-axis vignetting are introduced in Zemax software to perform polynomial optimization of the phase distribution of the metalens, achieving full-field imaging. The piezoelectric fiber scanning device passes an optical fiber through a piezoelectric tube and fixes it in place. A voltage signal is applied to the electrodes of the piezoelectric tube by a controller to drive the optical fiber to perform two-dimensional scanning. This invention overcomes the limitations of traditional off-axis imaging through the optimized design of the metalens. Combined with the resonant scanning mechanism of the piezoelectric fiber scanning device, it achieves a synergistic improvement in large field of view and high-speed imaging, possessing the advantages of simplified structure, lightweight design, and high performance.

The present invention relates to the field of mechanical engineering, and specifically to a method for predicting the imaging quality of an optical system based on assembly errors. First, an accurate finite element model of the optical system is constructed, the bolt tightening process is simulated, the mirror deformation under the action of assembly stress is obtained, and the mirror surface shape is fitted using Zernike polynomials. Using this as an intermediate medium, Zemax is used to simulate the imaging of the optical system under the conditions of mirror deformation and assembly posture, and the influence of various assembly errors on the imaging quality of the optical system is explored. Then, an assembly data set is constructed through an integrated simulation method, an MLP-XGBoost combined neural network agent model is established, and model training is performed. Compared with single MLP, XGBoost models, and traditional regression models, the model has greater superiority and reliability in terms of prediction accuracy. Finally, the stochastic gradient descent method is used to optimize the preload force under different primary and secondary mirror assembly posture conditions. The energy concentration is increased by an average of 11.34% compared to before optimization, thereby improving the assembly efficiency and accuracy of the double-mirror optical system.

The present invention discloses a grating waveguide device and a waveguide system based on the polarization volume grating technology, belonging to the technical field of augmented reality display. The device includes a waveguide substrate and a grating structure. The grating structure uses a liquid crystal material to form a PVG with periodic refractive index modulation through photo-induced alignment and self-assembly processes, which can selectively control the polarization state of the light beam and suppress the rainbow pattern phenomenon caused by ambient light diffraction. By optimizing the grating period, Bragg tilt angle, and waveguide substrate parameters, and combining Zemax simulation to optimize the light beam propagation path, efficient diffraction and total internal reflection transmission of multi-wavelength light beams are achieved. The waveguide system of the present invention can be adapted to devices such as AR glasses and head-mounted displays, significantly reducing the rainbow pattern intensity under complex ambient light conditions and providing a high-definition and distortion-free visual experience.

The present invention discloses a design method for a coupling lens for radiation-type optical fiber temperature field measurement. The method comprises the following steps: selecting a plano-convex lens as an initial structure of the lens and obtaining a relationship between a temperature measurement target diameter of a single temperature measurement channel of a sensor and a curvature radius of a sapphire lens; calculating the thickness of the sapphire lens based on the obtained curvature radius to ensure that an incident end face of the sapphire optical fiber is located on an image plane of the sapphire lens and simultaneously fits with a rear end plane of the sapphire lens; increasing the radiation light coupling capability of the sapphire lens by increasing its diameter while ensuring that sapphire lenses at the front ends of adjacent temperature measurement channels of the sensor do not interfere with each other; comparing the radiation light coupling capability of a single temperature measurement channel of the sensor to temperature measurement targets of different diameters on a test object by using ZEMAX simulation; performing curve fitting on the obtained data to obtain a relationship between the temperature measurement target diameter of a single temperature measurement channel of the sensor and the radiation light coupling capability, and selecting a lens structure with a minimum temperature measurement target diameter while ensuring that the sensor receives the radiation light energy required for its own temperature measurement.

The invention discloses a simulation method and device of an AR optical system, a medium and electronic equipment. The method comprises the steps of obtaining a header file and an initial source file; based on the Kogelnik coupling wave theory, the header file and the initial source file, obtaining a target file, and importing the target file into ZEMAX; in a ZEMAX sequence mode, calling the target file to generate a holographic waveguide assembly; obtaining a collimation assembly according to preset parameters of the display and the holographic waveguide assembly; and connecting a preset display, the collimation assembly and the holographic waveguide assembly to obtain the target AR optical system. Compared with the prior art, through the Kogelnik coupling wave theory and the ZEMAX, under the sequence mode of the ZEMAX, the simulation of the volume holographic grating and the AR optical system is realized by utilizing the self-defined surface type, the simulation difficulty is reduced, the simulation calculation efficiency is improved, the time consumption of subsequent design is reduced, and the simulation systematicness, integrity and quality are improved; and thus, the optical performance of the optical system in the AR equipment is improved.

The invention relates to the technical field of laser spot shaping, in particular to a method for shaping laser spots in different directions, x-direction large-angle beam expansion and y-direction high-precision collimation are achieved by designing a special lens, and the method is based on Zemax software analog simulation. The double-conical-surface and cylindrical-surface combined design and the high-order aspheric-surface correction type are adopted to optimize the surface type, high-order aberration is remarkably restrained, the light spot quality is improved, meanwhile, the short TTL design meets the requirement for miniaturization, the machining difficulty and cost are reduced, the debugging process can be simplified, the requirements for beam expansion and collimation of various linear light spots can be flexibly met, and the wide application prospect is achieved.