98 results about "Optical aberration" patented technology

The invention relates to the technical field of optical imaging, and discloses an optical lens splicing imaging method and system, and the system comprises a calibration module, a preprocessing module, a registration module, a correction module, and a fusion module. Through the arrangement of the registration module, the correction module and the fusion module, the problem of registration errors caused by sparse feature points of a low-texture region can be solved through a mixed strategy of global mutual information guidance and local robust matching, the registration precision is effectively improved, the optical aberration of each sub-lens is compensated through a global model based on a Zernike polynomial, and the registration precision is improved. The image quality of the marginal area of the spliced image is effectively improved, a multi-resolution pyramid optimization mode is adopted, the calculation complexity of global registration is reduced, the real-time imaging requirement is met, meanwhile, splicing seams are effectively eliminated, and the overall smoothness of the image is remarkably improved.

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.

Embodiments of the present disclosure generally relate to an optical system having a lens system configured to have a wide field of view and high resolution. The optical system includes three or more lens groups with ability to combat optical aberrations and produce a pupil outside of the lens group. The lens system as an image projection system projects a pattern or image rendered on a flat reticle or display of finite distance to the infinity. In an imaging system, the lens system collects light from infinity and forms an image of that object on a sensor.

The invention relates to a 1.2-inch intelligent traffic monitoring system lens and a working method thereof. An optical imaging system of the lens is sequentially provided with a first lens to a fourteenth lens from an object space to an image space. Wherein the focal power of each lens adopts a positive and negative combined form, so that optical aberrations such as spherical aberration and the like are greatly reduced. Wherein the fourth lens and the fifth lens form an achromatic doublet lens group, the seventh lens and the eighth lens form an achromatic doublet lens group, the ninth lens and the tenth lens form an achromatic doublet lens group, and the eleventh lens, the twelfth lens and the thirteenth lens form an achromatic triplet lens group. Through reasonable lens matching, an optical system realizes large aperture, large target surface and no defocus in day and night, and through good correction of on-axis and off-axis aberrations, the lens has good imaging quality.

Provided are systems and methods for analyte detection and analysis. A system can comprise an open substrate. The open substrate may be configured to rotate or otherwise move. The open substrate can comprise an array of individually addressable locations, with analytes immobilized thereto. The substrate may be spatially indexed to identify nucleic acid molecules from one or more sources, and / or sequences thereof, with the respective one or more sources. A solution comprising a plurality of probes may be directed across the array to couple at least one of the plurality of probes with at least one of the analytes to form a bound probe. A detector can be configured to detect a signal from the bound probe via scanning of the substrate while minimizing temperature fluctuations of the substrate or optical aberrations caused by bubbles.

Provided herein are a soft contact lens for correcting an ocular refractive error of an eye, the soft contact lens comprising a vaulted portion and a specialty feature.

The invention provides an integrated calibration method, device and equipment for photoelectric non-uniformity of an optical star measurement sensor, and relates to the technical field of spacecraft celestial navigation. The method comprises the following steps: constructing lattice structure light to form array image spots on a star sensor, resampling to establish an actual PSF model, and realizing optical system aberration calibration of a corresponding area; sequentially displacing the array image spots, and calibrating the electrical response non-uniformity of each pixel by using the mapping relation between imaging data and PSF; and performing precise positioning on the image spot array after pixel response correction to obtain an image spot high-precision positioning result, and calibrating optical distortion of each pixel according to the high-precision positioning result. Therefore, the problems of photoelectric non-uniform coupling and limited calibration precision in calibration of the star measurement sensor are effectively solved, and high-precision and integrated calibration of optical aberration, distortion and electrical response of the star measurement sensor is realized.

The application discloses a high-resolution oblique-axis optical lens, comprising, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a protective glass and an image sensor; the first lens is a filter; the second lens is a biconvex spherical lens with positive focal power; the third lens is a spherical lens with negative focal power; the fourth lens is a spherical lens with positive focal power; and the fifth lens is a biconcave spherical lens with negative focal power. The technical scheme balances and corrects optical aberrations of all levels by reasonably distributing the focal power of the lenses, reasonably matching the optical materials and shapes, and utilizes the cylindrical lens to correct astigmatism caused by the optical path of the meridian arc vector plane of the protective glass, so that the advantages of large target surface, low distortion, ultra-short object distance, high resolving power and the like of the lens are achieved.

The present invention relates to an optical or Raman micro-spectrometry apparatus (100) comprising an optical microscope objective (10) and an optical spectrometer (20). According to the invention, the micro-spectrometry apparatus comprises an astigmatic optical system (30, 31, 32) arranged outside the optical spectrometer (20, 21), between the microscope objective (10) and the optical spectrometer, the astigmatic optical system (30, 31, 32) being arranged and configured to form an astigmatic image of a light beam transmitted through the microscope objective (10) on the input slit of the optical spectrometer (20, 21), the astigmatic image being elongated by astigmatism in the height direction of the input slit, the optical spectrometer being able to spectrally disperse the astigmatic image and form a spectrally dispersed image of the field of view on the detector, the astigmatic optical system being configured to reduce an optical aberration of astigmatism of the optical spectrometer in the spectrally dispersed image.

The present invention is applicable to the field of pilot training technology and provides a ground-based vision training device for pilots that takes environmental and physiological factors into account. The device uses a computer system to rapidly simulate human visual characteristics, including: establishing a light source and brightness detector; obtaining a two-dimensional distributed brightness matrix of the scene; obtaining ambient brightness information of the external scene as perceived by the human eye, which affects optical aberrations by affecting pupil diameter; establishing an optical model of the human eye and obtaining a modulation transfer function; simulating the observation effect of the external scene after passing through the model in the frequency domain, using a GPU for accelerated processing; using an eye tracker to determine the coordinates of the pilot's gaze point, simulating the blur and depth of field characteristics of the peripheral vision; and finally performing image fusion to obtain a simulated image of the external scene after passing through the human eye. The present invention can improve the effectiveness of flight training or the accuracy of new aircraft cockpit evaluations, and provide pilots with a more realistic and intuitive flight visual experience during ground training.

A multiplexing adaptive optics method for deep-tissue imaging is provided, comprising: providing a first optical beam and a group of second optical beams, each with lower intensity and distinct modulation frequencies; combining the beams with temporal overlap to form a composite excitation beam; focusing the composite beam into a sample such that the second optical beams are laterally separated in the focal plane; detecting a signal excited by the composite beam; demodulating the signal with reference frequencies to compute phase and amplitude data at each modulation frequency and obtain a second signal; performing spatial measurements of the first beam relative to the second beams to derive down-sampled electric-field point spread functions; and merging the functions to reconstruct a full-sampled point spread function for identifying and correcting optical aberrations within the sample.

The invention provides a multi-site adaptive optical correction method and device applied to a mesoscopic two-photon scanning microscope, and the method comprises the steps: employing a resonance mirror and two galvanometers as a scanning module of a system, dividing a whole imaging view into a plurality of sub-regions, and carrying out the sequential scanning of the sub-regions one by one; a reflective deformable mirror is used as an aberration compensator, and an aberration compensation value is updated in real time; the whole visual field is filled with a regular hexagon, the center and vertex positions of the regular hexagon are set as aberration compensation points, and a reflective deformable mirror is used for carrying out aberration correction on the compensation points in advance; and automatically loading an optical aberration compensation value closest to the center of the sub-region according to the central coordinate position of the sub-region so as to ensure that the image resolution near the optical diffraction limit is kept in the whole view region.

The present invention relates to a reflective lithography lens, comprising a first lens and a first reflector, arranged sequentially along a first optical axis; a second reflector, arranged sequentially along a second optical axis; an aperture, arranged concentrically with the second reflector; a second lens group; and a sixth lens. By constraining the distance between the object plane and the first lens and the distance between the aperture and the image plane, various optical aberrations are effectively balanced, enabling the lithography lens to achieve a larger field of view while also exhibiting excellent imaging performance, thereby resolving the problem of a limited field of view in existing lithography lenses. Furthermore, the lithography lens of the present invention utilizes a reflective structure, causing light to pass through the second lens group twice, in both forward and reverse directions. This reduces the number of lens elements while ensuring the beam transmission distance, thereby effectively reducing the size of the lithography lens and lowering its cost and assembly difficulty.

The utility model discloses an aberration-adjustable lens structure, a camera and a video camera. The lens structure is sequentially provided with optical aberration adjusting group glass and an FA adjusting optical lens group from an object side to an image plane side; the optical aberration adjusting group glass is driven by the SA adjusting ring to move and adjust out-of-focus imaging. And the FA adjusting optical lens group is driven by the FA adjusting ring to move so as to adjust the back focus. According to the lens structure, the imaging background blurring style of the lens can be freely adjusted, the back focal distance can be quickly adjusted, and the space is effectively utilized on the premise that the habits of a user are not changed according to the sequence from the object side to the image surface side.

An image light guide system comprising: an image light guide arranged to direct an image-bearing light beam of a virtual object at a first focus distance toward an eye-moving frame; a first corrective optical element arranged between the image light guide and the real-world object, the first corrective optical element having a spherical power contribution operable to converge or diverge the real-world image-bearing beam to a second focus distance less than the first focus distance before the eye-moving frame; a coupling-out optic arranged along the image light guide, the coupling-out optic having a spherical power contribution operable to converge or diverge the virtual image-bearing beam to a second focus distance less than the first focus distance before the eye-moving frame, and a coupling-out optic arranged along the image light guide, the coupling-out optic having a spherical power contribution operable to converge or diverge the virtual image-bearing beam to a second focus distance less than the first focus distance; and a second correction optical element disposed between the image light guide and the eye movement frame, the second correction optical element having a cylindrical optical contribution operable to reduce optical aberrations associated with viewing the real-world object and the virtual object at the second focus distance.

The image light guide system includes: an image light guide positioned to direct an image-bearing light beam of a virtual object toward an eyebox at a first focused distance; a first corrective optical element positioned between the image light guide and the real-world object, the first corrective optical element having a spherical light output contribution operable to converge or diverge the real-world image-bearing light beam before the eyebox to a second focused distance that is smaller than the first focused distance; an outcoupling optical element disposed along the image light guide, the outcoupling optical element having a spherical light output contribution operable to converge or diverge the virtual image-bearing light beam before the eyebox to a second focused distance that is smaller than the first focused distance; and a second corrective optical element positioned between the image light guide and the eyebox, the second corrective optical element having a cylindrical optical contribution operable to reduce optical aberrations associated with viewing the real-world object and virtual object at the second focused distance.

The application relates to the technical field of optical imaging, and discloses an optical lens splicing imaging method and system, the system comprising a calibration module, a preprocessing module, a registration module, a correction module and a fusion module; the registration module, the correction module and the fusion module are arranged, a mixed strategy of global mutual information guidance and local robust matching is used, registration error problems caused by sparse feature points in low-texture areas are solved, the registration precision is effectively improved, a global model based on a Zernike polynomial is used to compensate optical aberration of each sub-lens, the image quality of an edge area of a spliced image is effectively improved, a multi-resolution pyramid optimization mode is used to reduce the calculation complexity of global registration, real-time imaging requirements are met, and a splicing seam is effectively eliminated, and the overall smoothness of an image is significantly improved.

The present invention relates to a method of characterizing a microorganism, comprising: A. for each wavelength of a predetermined set of wavelengths comprising at least one wavelength, acquiring a holographic digital image, generating a focused image by a computer device, each pixel of the image comprising an amplitude value and a phase value, and segmenting the focused image to extract a portion corresponding to the microorganism, and B. characterizing the microorganism by a computer device according to the aggregated image portion. According to the invention, before characterization or before segmentation or before generation of aggregated images, the method comprises correcting the optical aberration of the acquisition device by means of a computer device, and characterizing the microorganism comprises applying a digital model to these parts, the amplitude value and / or phase value of each wavelength of the predetermined set of wavelengths as a descriptor.

The invention relates to the technical field of optical imaging, in particular to an aerodynamic optical aberration calculation method, which comprises the following steps of: firstly, dividing an external flow field for an aircraft model carrying an optical imaging system, and setting a speed variable condition, a plurality of flight height sampling points and a corresponding state boundary condition of the aircraft model; according to the Reynolds number and the viscosity interference parameter under each state boundary condition, dividing the flight height sampling points into two types of calculation aberration and prediction aberration; for a predicted aberration sampling point, randomly selecting one as a reference point, calculating the pneumatic optical aberration of the predicted aberration sampling point, and predicting the pneumatic optical aberrations of other predicted sampling points based on the pneumatic optical aberration of the reference point; for aberration calculation sampling points, the corresponding pneumatic optical aberration is solved by directly calculating external flow field density distribution and conversion refractive index distribution of the aberration calculation sampling points. According to the invention, through one-time pneumatic optical transmission aberration calculation, different flight heights are expanded, and the demand for large-scale calculation resources and the time required for evaluation are significantly reduced.

A photonic integrated circuit (PIC) 400A e.g. for LiDAR ranging may be configured to provide a beam scanner comprising an output light beam switchable between a plurality of out-coupling ports (output

This application provides an integrated calibration method, apparatus, and device for photoelectric inhomogeneity of an optical star-measuring sensor, relating to the field of spacecraft astronomical navigation technology. The method includes: constructing an array of structured light specks on the star-measuring sensor; resampling to establish its actual PSF model to calibrate the optical system aberrations in the corresponding region; sequentially displacing the array of specks; calibrating the electrical response inhomogeneity of each pixel using the mapping relationship between imaging data and PSF; precisely positioning the pixel-response-corrected speckle array to obtain high-precision positioning results; and calibrating the optical distortion of each pixel based on the high-precision positioning results. This effectively solves the problems of photoelectric inhomogeneity coupling and limited calibration accuracy in star-measuring sensor calibration, achieving high-precision, integrated calibration of optical aberrations, distortions, and electrical responses of the star-measuring sensor.

This invention belongs to the field of third-generation semiconductor material processing technology. It discloses a method and system for laser-based lift-off of curved silicon carbide. This invention establishes a target curved surface model and generates a corresponding three-dimensional processing path. During laser scanning, the beam wavefront is modulated in real time, and the lateral position and depth of the focus point within the material are simultaneously controlled. Optical aberrations caused by the material's high refractive index are compensated for. The entire process requires no mechanical movement of the focusing axis, forming a continuous and precise three-dimensional modification layer within the ingot. Finally, external force is applied along this modification layer to achieve low-damage, high-efficiency curved surface lift-off. This invention overcomes the limitation of traditional laser lift-off, which can only obtain planar wafers. It can directly construct any preset three-dimensional curved surface separation path within a silicon carbide ingot with a flat surface, thereby lifting out silicon carbide wafers with specific curvatures such as convex, concave, or free-form surfaces in a single operation.

A system for determining refraction features of both first and second eyes of a subject including a light field display device, a system of localization of the positions of the first and second eyes of the subject, the light field display device generating a first light field directed selectively toward the first eye, and, respectively, a second light field directed selectively toward the second eye, control circuitry that adjusts the first light field as a function of at least a first refraction parameter associated with at least a first optical aberration for the first eye and the control circuitry adjusting said second light field as a function of at least a second refraction parameter associated with at least a second optical aberration for the second eye.

The embodiment of the application discloses an optical imaging lens, a scanning display device and a near-eye display device, and relates to the technical field of scanning display. The optical imaging lens can reasonably disperse the optical power of the system, slow down the aberration generated by the lens, achieve the purpose of correcting various aberrations, and realize clear imaging of the image surface on the basis of improving the field of view by reasonably optimizing the focal length, surface structure, refractive index and dispersion coefficient of the related lenses in the eight coaxial lenses of the optical imaging lens. The combination of aspherical lenses and spherical lenses and the reasonable use of single lenses and cemented lenses further ensure the large field of view of the optical imaging lens, strengthen the correction of various optical aberrations, realize clear imaging, and at the same time, further reduce the volume and weight of the optical imaging lens, so that the overall structure of the optical imaging lens can be more compact, and the production demand of miniaturization of the lens product is met.

A method of reducing optical aberrations in an optical system includes determining aberrations caused by the optical system. The determining includes transmitting a first radiation beam having a first wavelength through a wedge-shaped system of an optical system. The wedge system includes a radiation curable adhesive disposed between the first wedge and the second wedge. The determining further includes analyzing the first beam using a detector disposed downstream of the wedge system to determine an aberration. The method further includes curing the radiation curable adhesive based on the analysis of the first beam. The curing includes using a spatial light modulator to adjust an intensity distribution of a second radiation beam having a second wavelength different from the first wavelength based on an analysis of the first beam. The curing further includes directing the second beam to the radiation curing adhesive to induce a position dependent optical property at the radiation curing adhesive.

A method of correcting for an aberration in an optical system (600) comprising an imaging detector (634) having a focussing lens (608) and a spatial light modulator (610) is provided. The method comprises receiving an image. The method comprises determining an intensity aberration compensation from the collected image. The method comprises controlling the spatial light modulator (610) to reduce the intensity aberration by applying the intensity aberration compensation.

The application discloses a combination correction system and method of a prescription lens and a focusing module applied to the technical field of lens correction, the system provides basic diopter correction through a static prescription lens, realizes Add adjustment of an adjustable focal power in a preset range in combination with a dynamic adjustable focusing module, adopts a positioning structure to maintain a preset relative position relationship between the lens and the module, and generates a driving signal according to user parameters and an assembly state through a calibration controller to compensate for optical aberration caused by assembly error, so that high-precision and personalized vision correction is realized, and the visual quality and wearing comfort under a complex refractive state are effectively improved.

Disclosed herein are systems and architecture for sending and receiving collimated beams directly from a photonic chip via on-chip mirror beamforming device to reduce manufacturing difficulties and optical aberrations. More specifically, an elliptical or parabolic mirror may be used in the photonic chip to collimate beams emitted from a waveguide port and to further enable techniques, such as wavefront error correction and beam steering, without moving parts.

The present application relates to the field of medical devices, in particular to an intelligent intraocular lens implant navigation system and method with adaptive optical calibration, comprising: a microscope module for collecting intraocular real-time image data; an adaptive optical system module connected with the microscope module for real-time evaluation of intraocular tissue optical aberration distribution and correction; a three-dimensional deep learning motion compensation module for predicting eye movement and compensating for micro-motion interference; a registration algorithm module for establishing spatial registration between OCT and intraocular imaging systems; an augmented reality projection module for superimposing registration guide lines on surgical microscope imaging; an intelligent intraocular imaging system for identifying intraocular tissue structure and instrument position, through multi-modal fusion perception, deep learning intelligent analysis, adaptive optical calibration and augmented reality guidance, precise implantation of intraocular lenses is achieved, and practical application shows that the lens implantation position accuracy can be improved to ±0.1mm.

The invention discloses a method and a device for calibrating a light curved surface of a line structured light vision sensor with self-adaptive curvature, and relates to the technical field of line structured light sensors, and the method comprises the steps: collecting target images, laser stripe images and temperature readings of a plurality of positions through a camera, a laser and a temperature sensor; then calculating laser optical center coordinates through a geometric projection method; performing triangulation on the laser stripe point cloud by using a camera internal reference matrix obtained by Zhang's calibration, and calculating curvature distribution of the laser stripe point cloud in combination with a mixed curvature model; generating a curvature gradient weighting coefficient according to the curvature gradient modulus length, and iteratively solving an optimal pose and curvature parameter through a closed-loop optimization unit; and finally, thermal drift compensation optimization is triggered according to the real-time temperature, an optimized light curved surface equation is corrected and output, and accurate calibration of the linear structure light sensor is realized. Through hybrid model compensation, closed-loop optimization and thermal compensation output, active compensation of inherent optical aberration of the laser in the calibration process is realized, and an accurate and efficient calibration solution is provided.