135 results about "Optical correction" patented technology

There is provided a method for video encoding and decoding based on a picture of a video and a supplementary enhancement information (SEI) message which is associated with the at least one picture and indicates one or more parameters of an optical correction to be applied to the at least one picture.

The invention discloses a multi-effect ultrastructure composite lens for preventing and delaying myopia, which comprises a lens main body, a functional area is arranged in the lens main body, and the functional area comprises a central optical correction area and an ultrastructure area which are arranged on the inner side. Compared with the prior art, the method has the advantages that the small central optical area is adopted to correct vision, and the prevention and control effect is enhanced. The ultramicro soft light area has prevention and control and visual transition effects. The ultra-micro lenses and the ultra-micro structure ring cylindrical lenses are alternately arranged on the outer side, due to the fact that the area is reduced, the number of the ultra-micro structures in the unit area is increased, the filling rate of the functional area of the whole lens is increased, the ultra-micro structures enable the brain to be not easy to perceive, visual perception is not easy to interfere, and the three ultra-micro structures have the effect of improving visual activity along with eyeball movement of visual activity. Signals entering the eyes are kept in dynamic change all the time, so that the visual experience is further improved while the prevention and control effect and imaging intervention are guaranteed, and long-term wearing is facilitated.

A method and system for estimating dimensions of vehicle exterior defects using multiple cameras arranged in a predefined configuration. The method comprises receiving images from multiple strategically positioned image sensors including side cameras parallel to a vehicle height axis, diagonal cameras at an inclined angle, and roof top cameras perpendicular to the height axis. An angle to detected defects is computed based on image sensor parameters. Different distance calculations are applied based on vehicle section location, with specialized formulas for windshield, back window, and roof components. Defect sizes are computed by determining multiple defect dimensions, with at least one dimension being adjusted by an angular correction factor derived from the relationship between camera angle and vehicle surface orientation. The system implements comprehensive validation through cross-referencing between cameras, comparison with known specifications, and measurement consistency analysis across multiple frames.

The present technology relates to bases for multi-component accommodating intraocular lenses (AIOLs) and associated methods for making and using such devices. The bases configured in accordance with embodiments of the present technology can be configured to provide an optical correction that adjusts in response to accommodative forces from a patient's eye and can be formed from one or more first materials and one or more second materials. Compared to the first material, the second material can be less resistant to deflection / deformation, e.g., in response to forces from the patient's eye. Accordingly, including the second material in the base can increase the compliance of the base and, in at least some instance, increase the responsive of the base to accommodative forces from the eye.

The invention relates to the technical field of semiconductor manufacturing, in particular to a photomask correction method, device and equipment and a medium, and the photomask correction method comprises the steps: obtaining a test layout with known parameters; training the initial optical proximity correction model based on known parameters until the cost evaluation function and the root-mean-square value are minimum, and obtaining an optical correction model; obtaining photochemical reaction parameters of the test layout, training an optical correction model based on the photochemical reaction parameters until the cost evaluation function and the root mean square value are minimum, and obtaining a target layout correction model; and inputting the initial layout into a target layout correction model to obtain a corrected layout, so as to obtain a target photomask based on the corrected layout, and at least ensuring that the exposed photomask pattern is consistent with a target pattern actually expected by a user.

The invention relates to the technical field of augmented reality glasses optical correction, and specifically provides an eye movement distortion detection method. The method comprises the following steps: acquiring an AR glasses playing image and identifying a visual saliency region to establish an attention priority order; detecting an eyeball movement track direction vector and an instantaneous speed in real time; determining a predicted attention target according to the motion direction and the attention priority; generating a distortion correction parameter set in combination with eyeball arrival time and spatial distribution information; performing pre-distortion compensation rendering on the candidate area in a pre-generation period before eyeballs reach the actual attention area to form a pre-corrected image buffer area; and finally, outputting a pre-corrected image matched with the actual stay area. Space-time synchronization of eyeball movement and image compensation is achieved through predictive rendering, the image distortion and color separation phenomena in the glancing process are eliminated while the low-delay characteristic is maintained, and the visual definition and comfort in a dynamic scene are remarkably improved.

The invention provides an optical correction camera lens module and an imaging method thereof. The method comprises the following steps: extracting a radial distortion parameter and a tangential distortion parameter from an original imaging image; performing target identification on the original imaging image to obtain a plurality of identification targets, performing regularized screening to obtain a regularized identification target, extracting a pixel reduction matrix of the regularized identification target based on a regularized target library, performing region reconstruction on a corresponding region of the original imaging image according to the pixel reduction matrix, and performing region reconstruction on a corresponding region of the original imaging image; extracting a radial distortion correction parameter and a tangential distortion correction parameter according to the reconstructed image area; and constructing an optical correction model based on the radial distortion correction parameter and the tangential distortion correction parameter, performing distortion correction on the original imaging image through the optical correction model to obtain a target imaging image, extracting a regularized identification target according to the original imaging image, and extracting a dynamic distortion correction parameter through the regularized identification target to obtain the target imaging image. And the real-time performance of imaging distortion correction is improved.

The invention discloses an unmanned aerial vehicle inspection image acquisition and automatic optimization method and system, and relates to the technical field of unmanned aerial vehicle inspection image automatic optimization, and the method comprises the steps: carrying out the optical correction of an image collected by an unmanned aerial vehicle through a local gray histogram equalization algorithm based on gamma transformation; determining the position and size of the target in the image according to a target detection algorithm; and adjusting the attitude and focal length of the holder according to the position and size of the target. According to the method disclosed by the invention, the problem of overexposure or underexposure caused by the change of illumination conditions is solved through a local gray histogram equalization algorithm based on gamma transformation; through a target detection algorithm, the key target of the power line in the image can be accurately identified, and the attitude of the holder is adjusted according to the position and size of the target, so that the accuracy of defect identification is improved; through a size estimation algorithm and a reverse consistency check mechanism, the focal length of the holder can be automatically adjusted according to the change of the relative distance between the target and the unmanned aerial vehicle, and the image definition is improved.

The invention provides an intelligent compensation method for a continuous variable quantum key distribution channel of a high-altitude platform, and relates to the technical field of quantum communication, and the method comprises the steps: obtaining a current light intensity distribution diagram of a to-be-compensated channel link, inputting the current light intensity distribution diagram into a constructed atmospheric turbulence phase prediction model, predicting phase distortion caused by turbulence in the to-be-compensated channel link to obtain a phase prediction result; and compensating the to-be-compensated channel link by using the phase prediction result. The network architecture of the atmospheric turbulence phase prediction model comprises an input layer, a feature extraction module, a small sample learning module, a dynamic optimization module and an output layer which are connected in sequence. According to the invention, the problem of poor correction precision in the traditional optical correction technology is effectively solved, and the efficiency and stability of the high-altitude platform CV-QKD channel are improved.

Techniques for an optical lens set and optical combiner are described herein. In an example, an apparatus has a first side and a second side. The apparatus includes an optical combiner and a first optical lens disposed at the first side. The image combiner is configured to output light emitted by a light projector as a virtual image projection within a field of view. At least a first portion of the first optical lens is within the field of view and is characterized by a first optical power that provides a first optical correction. The first optical power compensates for a second optical power of a second optical lens optionally disposable at the second side.

The present disclosure relates to a computer-implemented method for determining a refractive correction in an optical system, such as an eye. This method involves the utilization of data representing a light wavefront that has passed through the optical system to compute a curvature map. The curvature map is then segmented into at least two clusters based on the variation between the curvature data points. For each cluster, the mean curvature of the light wavefront is calculated. Subsequently, the refractive correction corresponding to the mean curvature of the light wavefront in each cluster is computed. The final step involves selecting one of these computed refractive corrections as the definitive refractive correction for the entire optical system. This method allows for a quick and precise prescription determination for any type of optical correction.

In a projection exposure method for exposing a substrate arranged in the region of an image plane of a projection lens with at least one image of a pattern arranged in the region of an object plane of the projection lens, using radiation from a wavelength range around a design wavelength < 260 nm, a substrate (SUB) is coated with a relatively thick radiation-sensitive photoresist layer (RS) and exposed using a projection lens (PO). This lens produces a focus at a design focus position (FOCO) at the design wavelength and, for other wavelengths outside the wavelength range, offset focus positions from an axially extended focus area (ΔFOC) around the design focus position (FOCO). The projection lens is designed as a single-waisted or double-waisted system.During an exposure time interval, different wavelengths from the wavelength range around the design wavelength are used such that the axial extent of the focus area is at least as large as the layer thickness. The projection lens is optically corrected for chromatic aberration (CHV) such that, in the region of the design wavelength, the image scale is essentially independent of the wavelength, so that a change in wavelength of 1 picometer results in a maximum variation of 2 nm between the position of an image point corresponding to an object point within an image field.

The invention belongs to the technical field of LED driving, and particularly relates to a software compensation color correction method for LED lamp beads. By means of a light splitting test system in a lamp bead packaging link, key parameter values such as the position and the wavelength of a light-emitting wafer of each lamp bead and a lamp bead collection temperature value are comprehensively recorded, optical correction values are measured and calculated, and the optical correction values are stored in registers in the lamp beads; the application device is powered on to output the target brightness value, and the lamp bead calls the optical correction value in the register to achieve accurate control over the color of the lamp bead. The method provided by the invention thoroughly breaks through the limitation of a traditional Bin scheme, 96% of brightness / chromaticity deviation can be eliminated, lamp beads of different batches under different working conditions have completely consistent optical characteristics, and the method is particularly suitable for scenes such as Micro-LED display, medical endoscopes and the like which have extremely strict requirements on color precision.

In a projection exposure method for exposing a substrate arranged in the area of ​​an image plane of a projection lens with at least one image of a pattern arranged in the area of ​​an object plane of the projection lens with radiation from a wavelength range around a design wavelength < 260 nm, a projection lens (PO) is used which is optically corrected such that at the design wavelength a focus is generated in a design focus position (FOC0) and for other wavelengths from the wavelength range offset focus positions are generated from an axially extended focus area (ΔFOC) around the design focus position (FOC0).The projection lens has a wavefront manipulation system (WFM) for controllably influencing the wavefront of the projection radiation extending from the object plane to the image plane, wherein the wavefront manipulation system (WFM) has at least one manipulator which, in response to control signals from a control unit within a usable setpoint range, undergoes setpoint changes that lead to changes in the wavefront. The method comprises the following steps: . Coating the substrate (SUB) with a radiation-sensitive photoresist layer (RS) having a layer thickness (SD); exposing the photoresist-coated substrate with the image of the pattern using radiation that, under the control of a control unit, has different wavelengths from a wavelength range with a spectral bandwidth around the design wavelength according to a predetermined temporal sequence; synchronizing a wavefront manipulation system (WFM) control with the temporal sequence of radiation of different wavelengths such that a lateral chromatic aberration caused by switching between different wavelengths is at least partially compensated.

The invention discloses a wavefront detection-free adaptive optical correction method and system, and the method comprises the steps: obtaining a real in-focus image and a real out-of-focus image of a to-be-corrected light beam, and outputting an updated deformable mirror control voltage through a physical information neural network; generating a predicted wavefront phase according to the deformable mirror control voltage signal and a deformable mirror voltage-phase mapping model; generating a predicted in-focus image and a predicted out-of-focus image through a derivable Fourier optical propagation model; constructing a label-free composite loss function according to the real in-focus image, the real out-of-focus image, the predicted in-focus image and the predicted out-of-focus image; performing unsupervised training updating on the physical information neural network according to the composite loss function, and performing repeated iteration to obtain an optimized deformable mirror control voltage; and driving the deformable mirror to carry out self-adaptive optical correction in real time according to the optimized deformable mirror control voltage to obtain a correction result. According to the invention, the correction efficiency and the system stability are obviously improved.

The embodiment of the invention discloses a hydroelectric slope deformation monitoring method, a hydroelectric slope deformation monitoring system and electronic equipment. The deformation monitoring method comprises the following steps: acquiring an optical image stream, a radar image sequence and a meteorological data set; performing feature extraction on the optical image, and obtaining a target displacement sequence; performing lens inclination angle distortion correction based on the target displacement sequence to obtain optical correction data; the method comprises the following steps: acquiring a permanent scatterer deformation sequence by adopting an SBAS-InSAR technology based on a radar image sequence, generating a global deformation graph sequence by adopting a spatial interpolation algorithm, carrying out space-time alignment on a target displacement correction sequence and a meteorological data set with the global deformation graph sequence, and carrying out atmospheric delay correction based on an obtained time distribution matrix. Calibrating the radar data based on the optical data to obtain corrected radar deformation data; and hydroelectric slope deformation monitoring information is output by fusing the optical displacement data and the radar deformation data. According to the invention, the precision, timeliness and environment adaptability of deformation monitoring are enhanced.

The embodiment of the invention provides an out-of-focus lens and a design method thereof. N annular optical correction areas and N annular optical out-of-focus areas are alternately arranged on the radial outer side of one circular optical correction area and are concentric. The ratio of the total area of the annular optical defocus area to the total area of the defocus lens is 0.55-0.58. The focal power of the optical correction area is first focal power, and the focal power of the optical defocus area is second focal power. The optical correction area image space focus is located on the image space of the annular optical correction area image space focus. By applying the embodiment, the plurality of optical correction areas form a clear image on the retina of the human eye to correct refractive error of the human eye, the plurality of optical defocus areas form an image in front of the retina to generate myopia defocus to delay eye axis growth, the optical correction areas and the optical defocus areas are alternately arranged, and the eye axis growth is delayed by controlling the areas of the optical correction areas and the optical defocus areas. The peripheral defocusing effect is achieved, the visual quality is improved, and the myopia progress is delayed.

The invention discloses a peripheral defocus principle-based progressive multi-focus optical correction method, which belongs to the technical field of vision correction and comprises the following steps of S1, collecting eye data of teenagers; s2, eye biological parameters are extracted; s3, calculating the change relation between the center defocusing amount and the peripheral defocusing amount under the dynamic change of different field angles and different pupil diameters; s4, presetting a target center defocusing amount and a peripheral defocusing amount of the progressive multi-focus lens under different field angles and different pupil diameter dynamic changes, and calculating a difference value between the target center defocusing amount and the peripheral defocusing amount under different field angles and different pupil diameter dynamic changes of eyes as a to-be-adjusted defocusing amount; s5, calculating parameters of the progressive multi-focus lens; s6, constructing a progressive multi-focus lens model; s7, optimizing the progressive multi-focus lens model; s8, performing optical correction by using the optimized progressive multi-focus lens model; the traditional Chinese medicine composition has a treatment effect and a prevention and control effect at the same time.

A kind of telescope active optical correction system correction accuracy testing device, including laser interferometer, multidimensional adjusting table, wave aberration measurement component and plane mirror, laser interferometer is placed in the outside of optical telescope for emitting test light to the inside of optical telescope, to detect the wave aberration data of multiple fields of view;Multidimensional adjusting table is used to adjust the position, angle of optical element in optical telescope, to simulate the situation that telescope imaging quality drops;Wave aberration measurement component is set at the image plane of telescope for measuring the wave aberration after optical telescope imaging quality drops, and plane mirror is used to reflect test light.The present application relates to a kind of telescope active optical correction system correction accuracy testing method, the displacement amount and rotation angle of optical element when comparing when simulating image quality drop and when correcting judge the correction accuracy of active optical correction system, compare wave aberration before simulating image quality drop and after correction, judge whether the image quality after correction reaches the image quality before simulating image quality drop.

The present invention discloses an optical measurement method for colored cotton fiber whisker tuft curves based on approximate secondary reflectivity and bulk correction. The method comprises the following steps: firstly, obtaining a fiber reflection signal and a fiber whisker transmission signal by using red, yellow and blue three-channel monochromatic light; then correcting the reflectivity of the colored cotton fiber with a fixed stacking density by using a secondary estimation optical algorithm for the monochromatic light reflectivity; then, calculating an optical linear density distribution curve of a random double-ended whisker tuft by using the light transmission signal obtained from the whisker tuft image, the corrected reflectivity signal and an optical surface density algorithm; finally, calculating a colored cotton fiber whisker tuft curve by using an optical correction algorithm for the bulkiness of combed cotton fibers or lint loose fibers. The method is applicable to measuring the lengths of cotton fibers of different colors and is more accurate than a method directly using grayscale reflectivity or ideal reflectivity. The method can also be used to measure the mass density distribution of colored cotton fibers or polymer stacking materials.

This invention relates to the field of multimedia data processing, and discloses a multimedia end-to-end optical-digital collaborative processing system and method, including an optical correction device, a discretization encoding device, and a synchronous playback device. The optical correction device monitors the status of the physical execution module, calculates the digital transformation matrix and physical limit markers, encapsulates them as correction metadata, and outputs it synchronously. The discretization encoding device extracts images based on differences between adjacent frames to generate discrete visual sequences, uses synchronization pulse markers in the audio stream to perform spatiotemporal mapping on the discrete data, and encapsulates it as a multimedia file for output. The synchronous playback device parses the file, extracts the synchronization pulse markers as a global clock to calculate timing deviations, performs rendering compensation based on the physical limit markers, and generates a reverse feedback signal based on the timing deviations, sending it to the front end to trigger closed-loop adjustment. This invention solves the problems of rendering misalignment and multi-track timing deviation accumulation caused by physical truncation, maintaining end-to-end stability.

The application relates to a high-precision optical alignment assembly method of a scanning mirror, and belongs to the technical field of laser radar manufacturing equipment, and solves the technical problems of insufficient precision, no compensation for glue shrinkage, low efficiency and high cost of special equipment in the existing scanning mirror assembly. Based on the light reflection principle, the method characterizes the included angle between the scanning mirror and the motor shaft through light path amplification offset, constructs an optical alignment system by using point laser, mirror group and scale receiving plate, completes coarse adjustment and fine adjustment by cooperating with the scanning mirror adjustment jig, makes the positions of the laser spots on the scale receiving plate coincide after the motor rotates 180 degrees, and then completes UV glue curing through the light curing device, and realizes high-precision assembly by combining the glue shrinkage compensation mechanism and the quantitative verification standard. Through the optical alignment method of light path amplification offset, the quantitative adjustment, the verification standard and the glue shrinkage compensation mechanism are combined, high-precision assembly of the scanning mirror and the motor shaft is realized, the glue shrinkage preset offset compensation scheme is established, and the angle offset problem of UV glue curing shrinkage is avoided.

A system is disclosed for determining optical correction information of optical equipment. The system includes a camera system for capturing at least one camera image, a target, toward which the camera system is directed, a detection area between the camera system and the target for receiving the optical equipment including at least one lens, and a processing system with a searching routine for determining at least one center of the at least one lens based on the at least one camera image of the target via the optical equipment.

The utility model discloses a LCD projection structure with aspheric reflector, which comprises an LCD screen, a Fresnel lens, a projection lens and an aspheric reflector. The LCD screen is arranged on the front side of the Fresnel lens, the projection lens is arranged on the back side of the Fresnel lens, and the aspheric reflector is arranged between the Fresnel lens and the projection lens or on the back side of the projection lens. The aspheric reflector is arranged between the Fresnel lens and the projection lens or on the back side of the projection lens. The structure design utilizes the reflection characteristics of the aspheric reflector to change the propagation path of light, provides sufficient optimization freedom for the projection lens, and makes the projection lens not need to spend energy to deal with the optical correction problem. Therefore, all optimization resources can be concentrated on the improvement of picture quality and depth of field, so as to improve the quality of the projection picture.

Described herein are systems and / or methods for designing contact lens systems with inter-ocular refractive differences (i.e., refractive disparity) for presbyopia. An exemplary method can include the step of determining a plurality of lenses included in a contact lens system for treating presbyopia. Each lens of the plurality of lenses can be configured for optical correction and may have an optical power distribution associated therewith. The plurality of lenses can be grouped based on optical correction. Each lens of these lenses in a particular group can have a different focal power distribution. The example method can include the step of creating a fitness guidance based at least on the plurality of lens and add requirements. This fitness guidance enables the provision of effective add inter-ocular disparity. The inter-ocular parallax of the effective add can be determined by optimizing monocular performance over a range of adjustment requirements and brightness levels.

There is provided a method for video encoding and decoding based on a picture of a video and a supplementary enhancement information (SEI) message which is associated with the at least one picture and indicates one or more parameters of an optical correction to be applied to the at least one picture.

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 relates to a photomask layout correction method and system, equipment and a storage medium. The photomask layout correction method comprises the following steps: acquiring a curve type photomask optical correction layout; carrying out Manhattan processing on the curve type photomask optical correction layout, and obtaining a Manhattan optimization layout based on a photoetching model; performing electron beam proximity effect correction on the Manhattan optimization layout to obtain an electron beam correction layout, and obtaining a photomask layout based on the electron beam correction layout; obtaining the contour difference between the photomask layout and the curve-type photomask optical correction layout; and correcting the Manhattan optimization layout according to the contour difference until the contour difference between the photomask layout and the curve type photomask optical correction layout is not greater than a reference threshold value, and outputting the Manhattan optimization layout. The method is used for reducing photomask manufacturing time and manufacturing difficulty of Manhattan of the curve type photomask layout, and meanwhile, the photoetching imaging quality of the Manhattan layout on the wafer is reserved to the maximum extent.

Contact lenses for the treatment of a refractive error, particularly astigmatism, are provided. An exemplary lens comprises a soft continuous lens body configured to cover a corneal surface, the lens body having a posterior surface to be suspended over the corneal surface forming a free volume thereover, and at least one discrete discontinuity. The free volume may be configured to fill with tear fluid, forming a tear lens over the corneal surface for correcting the ocular refractive error. The discrete discontinuity may allow a portion of the lens body to conform to a meridian of the eye without substantially distorting an optical region of the lens body. The discrete discontinuity may allow tear fluid to flow into and out of the free volume to form the tear lens. Optical correction is provided by a combination of the optical region of the lens body and the tear lens.

The invention discloses an infrared lens and a thermal imager. The infrared lens comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged along an optical axis A from an object side to an image side. Wherein the first lens is a positive meniscus lens, the first surface of the first lens is a convex surface facing the object side, and the second surface of the first lens is a concave surface facing the image side; the second lens is a biconvex lens and is provided with two convex surfaces facing the object side and the image side; the third lens is a negative meniscus lens and is provided with a concave surface facing the object side and a convex surface facing the image side; the fourth lens is a biconvex lens and also comprises two convex surfaces. The overall focal length of the infrared lens is f, the focal lengths of all the lenses are f1, f2, f3 and f4 respectively, and the focal lengths meet the following focal length relations:-2 < f1 / f <-1, 2 < f2 / f < 3,-11 < f3 / f <-10, and 2 < f4 / f < 3. Through the above structure and focal length matching, the infrared lens can achieve excellent imaging performance and good optical correction, and is suitable for a high-performance infrared imaging system.