11 results about "Zemax" patented technology

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 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.

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.

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 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 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 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.

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 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.