19 results about "Optical aberration" patented technology

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 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.

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.

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.

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.

A line-of-sight detection device according to the present invention includes: a display element; an optical system configured to guide light from the display element to a user; a light source; an image sensor configured to capture light from the light source reflected by an eye of the user, through at least a part of the optical system, wherein the optical system includes a lens that has a first surface from which light from the user side is emitted to a light-receiving surface of the image sensor, and a second surface through which light from the light source enters, the lens is disposed at a position facing the image sensor and the light source, and optical aberration of the first surface is smaller than optical aberration of the second surface.

A compact line- or full-field optical coherence tomography (OCT) system designed for high-resolution retinal imaging with reduced artifacts employs quarter wave plates in both the sample and reference arms to manipulate the polarization state of light, effectively suppressing spurious reflections and coherence repeat artifacts. A symmetrical arrangement of, for example, Plössl eyepiece and camera objective lenses minimizes optical aberrations and maintains a flat imaging field despite the retina's curvature. The scanning galvanometer mirror is positioned at the conjugate plane of the patient's eye pupil and sized to act as an aperture stop. An adjustable eyepiece compensates for individual refractive errors, enhancing image clarity across a wide range of patients.

The present application relates to the technical field of optical imaging, and particularly relates to a kind of aerodynamic optical aberration calculation method, first for the aircraft model of optical imaging system is equipped with external flow field, set its speed variable condition, multiple flight height sampling points and corresponding state boundary condition;According to the Reynolds number and viscous interference parameter under each state boundary condition, flight height sampling point is divided into two kinds of calculation aberration and predicted aberration;For predicted aberration sampling point, first randomly select one as reference point and calculate its aerodynamic optical aberration, then the aerodynamic optical aberration of reference point is used to predict the aerodynamic optical aberration of other predicted sampling points;For the calculation aberration sampling point, directly through the density distribution of its external flow field, conversion refractive index distribution is solved to obtain the corresponding aerodynamic optical aberration.The present application expands to different flight heights through once aerodynamic optical transmission aberration calculation, significantly reduces the demand for large-scale computing resources and the time required for evaluation.

This technology enables the application of necessary optical aberration corrections during image synthesis while suppressing image quality degradation. [Solution] The imaging device includes: an imaging means for capturing an image of a subject through an optical system; an image processing means capable of applying a plurality of correction processes relating to optical aberrations of the optical system to the image obtained by the imaging means; a recording means for recording the image and correction data for applying at least one of the plurality of correction processes to the image; a format for the image to be recorded in the recording means; and a control means for recording correction data in the recording means that allows correction processes not applied to the image to be applied to the image, based on correction processes not applied to the image.

A system and method for digital optical aberration correction and spectral imaging is provided. An optical system can include an optical imaging unit to form an optical image near an image plane of the optical system, a wavefront imaging sensor unit located near the image plane to provide raw digital data of a light field and image output near the image plane, and a control unit to process the raw digital data and the image output to provide a deblurred image output, wherein the control unit includes a storage unit storing instructions and a processing unit executing the instructions to receive the image input and the raw digital data of the light field incident to the wavefront imaging sensor and generate the deblurred image based on an analysis of an optical mutual coherence function at the image plane.

This application discloses a communication method and apparatus, storage medium, and electronic device for a laser terminal. The method includes: determining a target feedback quantity based on a target beam received by the laser terminal, the target feedback quantity including coupled optical power and the spot information corresponding to the target beam; iteratively updating the parameters of a wavefront controller based on the target feedback quantity until the laser terminal reaches a preset communication state. That is, through wavefront correction driven by the target feedback quantity, real-time adaptive compensation for optical aberrations in the laser device is achieved, thereby solving the technical problem of poor stability in the laser communication link due to optical aberrations in the laser terminal.

A method for characterizing an optical lens that includes a stack of several optical elements and is intended to be associated with an image sensor for acquiring images, the method includingdetermining, by optical measurement on the stack of optical elements, at least one data set (JG), referred to as geometric set, including data relating to at least one geometric parameter of at least one buried optical interface of the lens,digitally modeling the optical lens according to the geometric set, anddetermining, by an optical wave propagation digital simulator applied to the digital model, at least one matrix, referred to as aberration matrix, representative of optical aberrations introduced by the optical lens in an image.Also disclosed is a characterization device, an image acquisition method and device, and an imaging apparatus implementing such a method.

A system and methods for the correction of optical aberrations in a digital imaging system contained in a cellular phone. The system includes several main parts, including (a) digital filters, (b) hardware modifications, (c) digital system corrections, (d) digital system dynamics and (e) network aspects. The methods correct optical aberrations in captured images using software that is wirelessly updated. The system and methods solve numerous problems in still and video photography that are presented in the digital imaging environment in cellular phones.

This invention discloses an aberration correction and quantitative phase imaging method based on a physically driven neural field. The method constructs a physical forward model for differential phase-contrast imaging under partially coherent illumination conditions and implicitly represents the sample's complex transmission function and optical aberrations using a neural field. By jointly optimizing sample information and optical aberrations through a differentiable operator, it achieves an inversion solution from intensity information to the sample's phase distribution. This method overcomes the limitations of weak object approximation, achieving self-calibration of optical aberrations and high-precision phase recovery without additional calibration data or acquisition overhead. It is suitable for quantitative phase imaging of biological samples or micro / nanostructured samples.

Disclosed herein are soft contact lenses to mask astigmatism and other optical aberrations. The soft contact lenses have a lens body with an anterior surface, a posterior surface, and at least one fenestration traversing through these surfaces. The fenestration(s) promote or facilitate flow of a tear fluid into a lenticular volume over a corneal surface of the eye and under the posterior surface of the lens body. The tear fluid in the lenticular volume forms a tear lens to mask the astigmatism or other optical aberrations. Further described herein are the placement, size, and geometries of the at least one fenestration to optimally promote or facilitate the tear fluid flow for forming the tear lens. The fenestration(s) can be configured to optimize tear fluid flow from adjacent a tear meniscus of the eye.

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) disposed 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) onto the entrance slit of the optical spectrometer (20, 21), the astigmatic image being elongated by astigmatism in the direction of the height of the entrance slit, the optical spectrometer being capable of spectrally dispersing the astigmatic image and forming a spectrally dispersed image of the field of view on the detector, the astigmatic optical system being configured to reduce an astigmatism optical aberration of the optical spectrometer in the spectrally dispersed image. Figure for the abstract: Fig. 1.

The invention relates to a method (100) for characterizing an optical objective (OO) for imaging, said method (100) comprising: - a step (104) of measuring, with an image sensor, a lateral chromatic aberration function LCAF of said optical objective (OO), and / or - a step (108) of measuring, with an image sensor, a geometrical aberration function GAF of said optical objective (OO); so that, after acquisition of an image with said optical objective (OO), at least one of said aberrations, in particular each of said aberrations, is at least partially corrected in said image by digital processing of said image. The invention also relates to a system implementing such a method. The invention also relates to a method and a facility for manufacturing an optical objective implementing such a characterization method and system. The invention also relates to a method for acquiring an image with an objective characterized by such a characterization method and system.