127 results about "Optical aberration" patented technology

The invention discloses a turntable-based dual confocal image scanning microscope and an imaging method, and relates to the technical field of optical elements, systems, instruments and imaging. The imaging light source assembly, the optical fiber transmission assembly, the light source collimation assembly, the structured light generation assembly, the turntable assembly, the microscopic amplification assembly and the camera detection assembly are arranged along a light path; the structured light generation module realizes structured light illumination on a sample surface by loading a specific mask sequence, super-resolution imaging is realized, pinholes in the turntable assembly are equidistantly arranged according to an Archimedes spiral, and the turntable assembly rotates at a high speed to realize multi-point parallel scanning and de-scanning; the detection module performs detection by using an area array detector, so that the resolution improvement of double diffraction limit is realized; according to the dynamic pinhole array-pixel redistribution method, super-resolution reconstruction is carried out based on an image scanning microscopic system principle, and Stokes shift, optical aberration and other non-ideal conditions can be effectively corrected.

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.

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.

A charged particle beam microscope system directs a charged particle beam to a sample to produce a plurality of images for a plurality of areas of the sample. Respective first sets of one or more aberration predictor values are acquired for each of the plurality of images. During the image acquisition, an aberration measurement and a corresponding second set of aberration predictor values are periodically acquired. An aberration model is obtained using the aberration measurements the corresponding second sets of aberration predictor values, wherein the model takes a set of aberration predictor values as an input and outputs predicted aberration data. The model is applied to the first sets of aberration predictor values to obtain respective aberration data, which is used to reduce or at least partially correct for aberration in the charged particle microscope images. A sample reconstruction is obtained using the acquired charged particle microscope images.

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.

A method for acquiring an image with an apparatus including a camera module including an optical lens associated with an image sensor, the method including at least one iteration of an image acquisition phase by the apparatus including the following steps:capturing an image with the camera module; andcorrecting the captured image according to at least one correction matrix calculated, directly or indirectly, from at least one matrix, referred to as aberration matrix, determined for the optical lens, and representative of optical aberrations introduced by the optical lens in an image. Also disclosed are a characterization system and an imaging apparatus implementing such a method.

A correction optical element (COE) for a multi-channeled coherent beam combining (CBC) system that uses a fiber array comprising multiple optical fibers and a single collimation array comprising multiple collimating lenses, for coherent combining of a corresponding array of optical beams directed through the fiber array. The COE is configured for customized and segmented correction of collimation-based optical aberrations, caused at least due to misalignments between each corresponding optical fiber's Lij output end and a center of a corresponding collimating lens Lij.

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.

A pair of eyeglasses may include one or more adjustable lenses. An adjustable lens may include a stack of liquid crystal cells with passive matrix electrode arrays. Each passive matrix electrode array may include a pair of orthogonal electrodes that are rotated relative to other pairs of orthogonal electrodes in the stack. Control circuitry may apply different voltage profiles to the passive matrix electrode arrays to create the desired lens characteristics in the adjustable lens. The voltage profiles may be based on a stored look-up table that maps different target lens characteristics to different voltage profiles for the passive matrix electrode arrays. The target lens characteristics may include at least one of a target lens power and a target optical aberration correction. The look-up table may be based on information gathered during design and manufacturing using numerical optimization techniques.

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.

A method for heating an optical element in an optical system, such as a microlithographic projection exposure system, comprises introducing a heating power into the optical element using a thermal manipulator. The heating power is adjusted to a set of desired values. The set of desired values is adjusted to produce a thermally induced deformation depending on a first optical aberration to be compensated. Adjusting the set of desired values also includes taking into account the effect of introducing the heating power on a second optical aberration which is caused by useful light impinging on the optical element during operation of the optical system. The thermally induced deformation profile can be co-optimized.

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.

SOLUTION: A charged particle beam microscope system produces a plurality of images for a plurality of areas of a sample. Respective first sets of one or more aberration predictor values are acquired for each of the images. During the image acquisition, an aberration measurement and a corresponding second set of aberration predictor values are periodically acquired. An aberration model is obtained using the aberration measurements the corresponding second sets of aberration predictor values, where the model takes a set of aberration predictor values as input and outputs predicted aberration data. The model is applied to the first sets of aberration predictor values to obtain respective aberration data, which is used to reduce or at least partially correct aberration in the charged particle microscope images.EFFECT: A sample reconstruction is obtained using the acquired charged particle microscope images.SELECTED DRAWING: Figure 1

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.

The utility model discloses a vehicle-mounted foresight camera assembly and a vehicle, the vehicle-mounted foresight camera assembly comprises a mounting shell, the mounting shell is suitable for being connected to the rear side of a front windshield, and the mounting shell forms a containing cavity opened towards the front windshield; the front-view camera is installed in the containing cavity, the front-view camera comprises an imaging part and a plurality of lens parts, the multiple lens parts and the imaging part are sequentially distributed in the front-back direction, and at least one lens part is provided with a light filtering film assembly. According to the vehicle-mounted foresight camera assembly, the foresight camera is arranged in the installation shell, the road condition in front of the vehicle can be captured, the auxiliary driving function of the vehicle-mounted foresight camera assembly can be achieved, the multiple lens parts are arranged in the foresight camera, the distribution of light can be controlled, and the vehicle-mounted foresight camera assembly is more convenient to use. The optical aberration is effectively reduced, the image quality is improved, the filter film assembly is arranged on at least one lens part, unnecessary stray light can be filtered, and the authenticity and definition of the image are improved.

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 invention discloses an aberration detection device which comprises a scattered light generation module, an imaging module and an image receiving and processing module. Nanoparticles are arranged on the scattered light generation module, and the scattered light generation module is used for generating a scattering point light source formed by scattering of the nanoparticles; the imaging module and the image receiving and processing module are sequentially arranged along the optical axis of the scattering point light source; the imaging module is used for focusing and imaging the scattering point light source to generate a scattering image; and the image receiving and processing module is located at an imaging position point of the scattering image and is used for receiving the scattering image and performing data reconstruction calculation on a point spread function formed by the scattering image so as to determine the optical aberration of the imaging module. By means of the structure, accurate measurement of the optical aberration of the imaging module is achieved, the resolution ratio of the detection device is improved, and the structure is simple.

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.