125 results about "Pupil" patented technology

This invention discloses an eyeball implant. According to this invention, an eyeball implant can be permanently implanted on the eyeball without the hassle of attachment and detachment, and can form a beautiful appearance that is integrated with the pupil without blocking the light-entering aperture.

This disclosure relates to a gaze estimation method, apparatus, device, and medium. The method includes: acquiring a target eye image corresponding to a target eye whose gaze direction needs to be estimated; wherein the target eye image includes images of the target eye captured by different target cameras at the same time; based on the target eye image, acquiring three-dimensional pupil contour point information and the three-dimensional gaze direction of the target eye using a preset target network model; determining the three-dimensional pupil position of the target eye based on the three-dimensional pupil contour point information; and obtaining a gaze estimation result of the target eye based on the three-dimensional pupil position and the three-dimensional gaze direction of the target eye. This disclosure can effectively ensure the reliability of the final gaze estimation result.

This invention discloses a diffractive waveguide and its design method. The diffractive waveguide includes a waveguide substrate and a coupling-in region and a coupling-out region disposed on at least one side of the waveguide substrate. A beam of light projected from an image source is coupled into the waveguide substrate through the coupling-in region and transmitted to the coupling-out region by total internal reflection. The second coupling-out region of the coupling-out region includes multiple coupling-out sub-regions. At least two coupling-out sub-regions are filled with one-dimensional gratings with different grating directions to satisfy the requirement of pupil expansion and coupling-out of the beam through the second coupling-out region. The one-dimensional grating filled in the first coupling-out region of the coupling-out region has the same grating vector as one of the one-dimensional gratings in the coupling-out sub-regions to increase the coupling-out of edge rays and compensate for the coupling-out energy at the edges. Furthermore, the sum of the grating vectors of the one-dimensional gratings in the coupling-in region and the one-dimensional gratings in the coupling-out region is set to zero, so that the beam can be effectively coupled into the waveguide substrate and coupled out without dispersion, effectively improving the visual imaging effect of the diffractive waveguide.

A method for treating near-retina floaters includes dilating a pupil of an eye of a patient to at least 6.6 millimeters (mm). While the pupil is dilated to at least 6.6 mm, the method further includes emitting, by an optical delivery system, a plurality of pulses from a treatment laser into the eye of the patient, each pulse of the plurality of pulses having a diameter upon passing through the pupil that substantially fills the pupil and having a focus within 3 mm of a retina of the eye of the patient. Pulses may pass through adaptive optics that may be adjusted based on light emitted from the eye, such as two-photon fluorescence or second harmonic radiation, in order to reduce spot size at the focus.

The present disclosure provides a wearable device-based pupil center determination method and related device, wherein the wearable device comprises a first camera and a second camera for collecting eye images of the same eye, and the method comprises: acquiring a first eye image collected by the first camera and a second eye image collected by the second camera; determining a first pixel point and a second pixel point corresponding to the pupil center from the first eye image and the second eye image respectively; determining a first target camera parameter of the first camera according to the position of the first pixel point in the first eye image; determining a second target camera parameter of the second camera according to the position of the second pixel point in the second eye image; and determining the spatial position of the pupil center according to the first target camera parameter and the second target camera parameter.

Provided are an optical member having a plurality of opening regions, a lens device, and an imaging device. The lens device (100) includes: an imaging optical system (100A); a first polarization unit (101) that polarizes at least a portion of light that passes through the imaging optical system (100A); and a filter unit (130) that is disposed closer to an image side than the first polarization unit (101) and is disposed at or near a pupil position of the imaging optical system, the filter unit (130) including: a plurality of opening regions that allow light of the imaging optical system (100A) to pass therethrough and including a first opening region and a second opening region; a plurality of wavelength selection filters that are disposed in the first opening region and the second opening region and allow at least a portion of light of different wavelength bands to pass therethrough, respectively; and a second polarization filter that is disposed in the first opening region and the second opening region and has a plurality of polarization filters having different polarization directions from each other.

The application relates to the technical field of intelligent wearable devices, and discloses a diffractive waveguide and intelligent glasses, the diffractive waveguide comprising a waveguide substrate, a coupling-in grating structure, a pupil-expanding grating structure and a coupling-out grating structure; the pupil-expanding grating structure comprises an effective area and a suppression area, the effective area is configured to be capable of accepting light rays from any area of the coupling-in grating structure and coupling out the light rays to any area of the coupling-out grating structure; at least part of the pupil-expanding grating of the suppression area is filled with an isolation layer to suppress the generation of diffracted light rays of the pupil-expanding grating of the suppression area; and / or the period of at least part of the pupil-expanding grating of the suppression area is smaller than that of the pupil-expanding grating of the effective area to suppress the generation of diffracted light rays of the pupil-expanding grating of the suppression area. According to the application, the pupil-expanding grating is divided into areas and the suppression area is designed, so that the interference effect of the non-imaging area can be suppressed while the pupil is expanded, and therefore, when the intelligent glasses are used, a user can directly obtain a clear image with uniform brightness, and the display quality and visual experience are improved.

Methods and apparatus for providing eye model matching in a device are disclosed. When a user activates a device and the presence of the user's eye is detected, an image of the user's eye is captured. An eye model matching process is then implemented to determine a stored eye model (e.g., an eye model stored after enrollment of the eye on the device) that best matches the eye in the captured image. Determination of the best matching eye model may be based on matching between properties of the user's eye in the captured image (such as cornea and pupil features) and properties of the user's eye determined by the eye model. The best matching eye model may then be implemented in, for example, an eye gaze tracking process. In certain instances, the best matching eye model satisfies a threshold for matching before being implemented in the downstream process.

Method for determining a center point (504) of an eye (202) of an occupant of a vehicle (100), the method comprising the following steps: Determining (803) reference pupil pixel coordinates (140) and reference eye angle pixel coordinates (142) using a reference image signal (110) representing a reference image (300) captured by a camera (106) of at least a portion of a face of the occupant exhibiting a reference head pose, wherein the reference pupil pixel coordinates (140) represent a position of a center point (504) of a pupil (506) of the eye (202) of the occupant in the reference image (300) and the reference eye angle pixel coordinates (142) represent a position (312) of an eye angle of the eye (202) of the occupant in the reference image (300);Determine (805) homogeneous reference pupil coordinates (144) in a camera coordinate system (120) of the camera (106) using the reference pupil pixel coordinates (140) and homogeneous reference eye angle coordinates (146) in the camera coordinate system (120) of the camera (106) using the reference eye angle pixel coordinates (142); Determine (809) reference eye angle camera coordinates (148) using the homogeneous reference eye angle coordinates (146) and an eye angle associated depth information (588), wherein the reference eye angle camera coordinates (148) represent a position (312) of the eye angle in the camera coordinate system (120);and determine (811) reference eye center camera coordinates (150) assigned by the reference head pose as the intersection of a reference vector formed from the homogeneous reference pupil coordinates (144) and the homogeneous reference eye angle coordinates (146) and a reference sphere, wherein a center of the reference sphere is defined by the reference eye angle camera coordinates (148) and a diameter of the reference sphere by a mean eye diameter of a human eye (202).

A blinking monitoring method, system, medium and product in a strong light environment, the method comprising: a blinking monitoring system determining a user eyelid contour and a visible part of a user pupil from a user eye image, predicting an invisible part of the user pupil based on complete pupil information of the user, and then calculating a visible pupil ratio, an effective pixel ratio, and an eyelid height-width ratio. When the difference between the visible pupil ratio and the effective pixel ratio is within a preset error range, the blinking monitoring system calculates the degree of closure of the user's eyes corresponding to the user eye image according to a first weight of the eyelid height-width ratio and a second weight of the visible pupil ratio. In a preset time period, the blinking monitoring system obtains a plurality of user eye images with the same time interval, and determines the degree of closure of the user's eyes for each user eye image in turn to evaluate the blinking of the user in the preset time period. By implementing the method, the blinking indicators of the user can be accurately obtained, thereby predicting the fatigue state of the user.

The application belongs to the technical field of vision care, and provides a kind of intelligent glasses, glasses box and vision training method, intelligent glasses include: frame mechanism;Lens mechanism, it includes left mirror unit, right mirror unit and pupil distance adjusting unit, left mirror unit, right mirror unit are connected with pupil distance adjusting unit to realize lens pupil distance adjusting function;Drive mechanism is connected with pupil distance adjusting unit to realize zoom vision training function.The intelligent glasses provided by the application is simple in appearance, light in quality, can replace daily ordinary corrective glasses for use, can improve the user's retinal imaging quality by adjusting the lens pupil distance, reduce the eye fatigue, at the same time, the lens can be driven to reciprocate to realize zoom vision training function, effectively exercise ciliary muscle, improve the accommodation ability and acuity of ciliary muscle, play the effect of preventing and treating myopia and amblyopia, the vibration is weak, avoid the phenomenon of dizziness and discomfort produced in the training process, improve the user experience and vision training effect of wearer.

A vision screening device for administering vision screening tests to a patient, and in particular vision screening test(s) to determine the presence of diseases and / or abnormalities in the eye(s) of the patient, is described herein. The vision screening device is used to determine an order for performing various vision screening exams selected by a clinician for a patient in a compact timeframe and reduce time needed for pupil recovery between exams or other delays. The vision screening device captures visible and near infrared reflections from the patient and generates a composite image used for generating suggested diagnoses to a clinician via a display of the vision screening device.

1. Name of the designed product: sunglasses (crystal pupil). 2. Use of the designed product: sunglasses for wearing outdoors to shield from the sun. 3. Design points of the designed product: in the overall shape of the product. 4. Picture or photograph best indicating the design points: perspective view 1.

An ab externo automated laser treatment system for treating an eye in a subject, includes a non-contact laser source configured to generate a laser beam having at least one wavelength to treat the eye by directing the laser beam from a location spaced from the eye, wherein the at least one wavelength is a near-infrared wavelength in the range of about 0.5-2.2 μm, a laser scanner optically coupled to the non-contact laser source to receive the laser beam from the non-contact laser source and to scan the laser beam relative to the eye, and a processor, and memory including stored computer-readable instructions that, responsive to execution by the processor, cause the laser treatment system to direct the laser beam to a plurality of trans-scleral treatment locations to be irradiated in a predetermined treatment pattern on an external surface of the eye, wherein the trans-scleral treatment locations are 0-4 mm posterior to the corneolimbal junction, and wherein the laser beam is repetitively directed to the same irradiated trans-scleral treatment locations on the surface of the eye, and the trans-scleral treatment locations are irradiated at intervals sufficient to induce protective thermal preconditioning and therapeutic bio-stimulation of one or more of the trabecular meshwork and / or ciliary body without photocoagulation of the tissue of the eye. Trans-pupillary systems, patient interfaces, and methods are also disclosed.

This application discloses a binocular pupil recognition method based on high-brightness reflection point anchoring and contour matching, belonging to the field of automatic pupil recognition technology. It solves the problem of low pupil recognition accuracy in the prior art under complex conditions such as eyelash occlusion, corner shadows, and partial eyelid occlusion. The method includes: first, locating high-brightness reflection points in the left and right images of the binocular system and using them as stable spatial anchor points; then, determining an adaptive segmentation threshold in the monocular view; dynamically delineating the region of interest (ROI) centered on the centroid coordinates of the high-brightness reflection points and performing binary segmentation; identifying a preliminary set of contours and filtering them based on multiple features such as contour size, area, aspect ratio, and relative positional relationship with the anchor points to obtain a reliable set of candidate contours; finally, matching the candidate contours in the left and right views and selecting the optimal pupil contour pair, thereby achieving accurate and robust pupil localization in the binocular view.

Systems and methods for computing a gaze are provided. The systems and methods access an uncorrected gaze vector computed based on a center point of a user's pupil. The systems and methods process an image of the pupil through a machine learning model to predict an estimated error in the gaze vector, the machine learning model trained to establish, for a plurality of pupil parameters, a relationship between a plurality of ground truth gaze vectors and the uncorrected gaze vector, the pupil parameters including a diameter, a gaze angle, or a gaze eccentricity. The systems and methods generate a corrected gaze vector by applying the estimated error in the gaze vector predicted by the machine learning model to the uncorrected gaze vector that has been computed based on the center point of the user's pupil.

The present disclosure pertains to the phakic refractive lenses such as toric lenses, an advanced posterior chamber floating phakic refractive lens (PRL) designed for the correction of severe refractive errors, including myopia, hyperopia, and astigmatism. This innovative lens can reduce or minimize complications commonly associated with traditional phakic intraocular lenses, such as intraocular pressure elevation, cataract formation, and iris pigment dispersion. The phakic refractive lenses such as the toric lenses described herein feature a buoyant, flexible structure with a central aperture to facilitate aqueous humor flow, creating a natural centering force that stabilizes the lens within the pupillary space.

The utility model discloses a kind of equipment distinguishing fixation nature, including shell, the top of shell is equipped with fixed structure, the inside of shell is equipped with black dot generating device, combination mirror is equipped on black dot generating device, the upper end of black dot generating device is equipped with half lens, half lens is inclined, while the left end of shell is equipped with silica gel eyecup and convex lens, fixed structure is used to fix the center mark plate, while the center mark plate is equipped with center alignment device and alignment device light source, light source radiator is equipped in shell, the outside of shell is equipped with control key and card reader, combination mirror is filter and homogenization combination mirror.This application has the advantages of low cost, low false positive rate, pupil dilation free etc..

The invention relates to an opto-electronic binocular instrument for hypermetropia correction and a method for binocular hypermetropia correction. The instrument comprises two opto-electronic lenses (103, 110; 203, 204) and an imaging subsystem that captures images of the eyes. Using pupil tracking performed by processing the images of the eyes, the system is able to determine the depth at which the subject is gazing. Pupil tracking is performed at very high speed, using a high-performance graphics card and a highly parallelized pupil detection algorithm. The method comprises two steps. In a first step, a calibration is performed, in which the subject is asked to gaze at objects at different distances and the size and position of the pupils are measured. In a second step of the method, a correction is performed using the instrument. The system continuously captures and processes images to calculate the correction to be applied and finally corrects hypermetropia by applying said correction.

The utility model discloses a kind of pupil distance adjusting device and head-mounted display equipment, it is related to head-mounted display equipment technical field, and the pupil distance adjusting device in it includes support, two lens modules slidingly disposed on support, human eye detection module is arranged on two lens modules, first magnetic adjusting mechanism and second magnetic adjusting mechanism are arranged between support and two lens modules, and control unit is electrically connected with human eye detection module and second magnetic adjusting mechanism;First magnetic adjusting mechanism is used to drive two lens modules to move towards each other, second magnetic adjusting mechanism is used to drive two lens modules to move away from each other, human eye detection module is used to detect whether human eye is in the center of lens module and corresponding detection signal is transmitted to control unit, and control unit is used to control second magnetic adjusting mechanism action.The utility model not only can realize the adjustment of pupil distance, and strong stability, no noise, improve the wearing experience of user.

This application discloses a refractive screening instrument and its evaluation method, relating to the field of optometry technology. It includes a central processing and evaluation module; a pupil positioning and image capture module, which is signal-connected to the central processing and evaluation module. The pupil positioning and image capture module is used to lock onto the subject's eye and capture eye images to determine the pupil center reference point; and a first projection and sensing module. This application, by calibrating all measurement optical paths with the pupil center as a unified reference point, effectively eliminates alignment errors caused by micro-movements of the eyeball, ensures the consistency of multi-source data in spatial coordinates, and improves the repeatability and accuracy of measurements. This application combines basic refractive power measurement with higher-order aberration analysis, enabling not only the acquisition of conventional refractive powers such as spherical and cylindrical lenses, but also the quantitative detection of complex refractive problems such as irregular astigmatism and corneal morphological abnormalities by analyzing the distortion of the grid pattern.

The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to an intraoperative eye protector; the protection part comprises a protection unit; the protection unit is symmetrically arranged on one side of the fixed part; a through hole is arranged on the fixed part; the protection unit comprises a mounting frame and a protective cover; the mounting frame is fixedly connected to the side wall of the fixed part; the mounting frame is annular in structure; the mounting frame is coaxial with the through hole and wraps the through hole; the protective cover is detachably connected to one side of the mounting frame away from the fixed part; the protective cover is a cavity structure with only one opening; the protective cover completely blocks the through hole. In the surgical process, the protection part shields the eyes of the patient, can continuously isolate the intraoperative strong light stimulation and dust impurities in the air. The eyes of the patient enter the interior of the protection part through the through hole, and intraoperative eye compression damage is effectively avoided. The mounting frame and the protective cover are detachably connected, the protective cover can be opened in the surgical process to expose the eyes of the patient, intraoperative pupil state convenient and real-time observation are realized, and the clinical surgical monitoring demand is adapted.

Provided are an optical waveguide and an optical waveguide sight, relating to optics technical field. In the optical waveguide sight, a light source and a collimating element are sequentially arranged along an in-coupling channel of a non-pupil-expansion optical waveguide. The collimating element is configured to collimate light beam emitted from light source, forming first parallel light beam, which is transmitted to the in-coupling region. The non-pupil-expansion optical waveguide is configured to redirect and transmit the first parallel light beam to an out-coupling region thereof to form second parallel light beam that is emitted to human eyes. The non-pupil-expansion optical waveguide enables efficient transmission and expansion of optical path with compact structure, broadening effective observation field of view while maintaining small footprint. Moreover, precise light-guiding characteristics of the optical waveguide prevents refraction deviations of light when it propagates at edges, reducing chromatic aberration and aiming errors, thereby enhancing display effect.

This invention provides a method, apparatus, device, and storage medium for real-time iris tracking and localization. The method includes: performing multi-level convolution processing on a real-time input iris image to extract iris features at different scales, obtaining a feature map set; inputting the feature map set into a preset mask prediction model for mask prediction, obtaining a pupil boundary mask and an outer iris boundary mask; extracting the boundary contours of the pupil boundary mask and the outer iris boundary mask, obtaining a pupil boundary contour point set and an outer iris boundary contour point set; performing geometric fitting based on the pupil boundary contour point set and the outer iris boundary contour point set, and optimizing and correcting the fitting parameters according to the concentric constraint relationship between the iris and the pupil to obtain the iris localization result. This invention, by combining boundary enhancement feature fusion with geometric constraint optimization, can accurately locate the inner and outer boundaries of the iris in non-cooperative environments, improving the accuracy and robustness of iris localization.

To provide an iris recognition device and method for correcting pupillary deviation based on the dominant eye. [Solution] An iris recognition device for correcting pupil deviation using a dominant eye according to one embodiment of the present invention includes: an iris recognition unit that uses a camera module to recognize the user's face, the pupil positions of both eyes, and reflected light (SPECULAR) generated at the iris recognition position, and determines whether the pupil position and the position of the reflected light can be aligned; an indicator control unit that activates an IR-LED indicator for iris recognition to generate the reflected light at the iris recognition position and activates an additional indicator located on the eyeball side where the pupil position and the position of the reflected light were not aligned; and an iris image generation unit that captures the iris images of both eyes when the reflected light is aligned at the pupil positions of both eyes.

The present application relates to the technical field of head-mounted display devices, and particularly relates to a pupil distance adjusting assembly and a head-mounted display device, which comprises a lens assembly, a support body, a sliding assembly and an adjusting assembly, the lens assembly comprises a first lens body and a second lens body, the adjusting assembly comprises a driving part, a first adjusting assembly and a second adjusting assembly, when the driving part is in a first motion state, the driving part drives the first lens body to move towards the second lens body through the first adjusting assembly, when the driving part is in a second motion state, the driving part drives the second lens body to move towards the first lens body through the second adjusting assembly, further making the distance between the first lens body and the second lens body in the present application adjustable, so as to facilitate the use requirements of users with different pupil distances.

1. The name of the design product: footpath lamp (pupil light D4). 2. The use of the design product: the design is used for lighting. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1. 5. Other circumstances that need to be explained: the use state diagram 1 and the use state diagram 2 of the design are both the rotating state diagram in the use process of the perspective view 1.

This invention provides a myopia screening device. The first end of the housing is designated as the detection end for testing the subject's eyes. A visual target screen, a screening camera, and an optical path assembly are all housed within the housing. The visual target screen is located on one side wall of the housing, the optical path assembly is positioned between the detection end and the visual target screen, and the screening camera is located at the second end of the housing. The screening camera captures a light and shadow image of the subject's pupil. A processor processes and analyzes the light and shadow image captured by the screening camera. An input device communicates with the processor and inputs the image seen by the subject on the visual target screen into the processor. This invention enables not only refractive error testing but also visual acuity testing and color blindness / color weakness testing. Furthermore, this invention can estimate the subject's visual acuity based on the refractive error test results, generate a corresponding estimated visual target based on the estimated visual acuity, and quickly complete the visual acuity test, effectively shortening the visual acuity screening time.

The anamorphic near-eye display device comprises a spatial light modulator having asymmetric pixels, an input transverse anamorphic lens, an input waveguide that transmits input light to a partial reflection mirror in a first direction, an intermediate waveguide having a reflective lateral anamorphic component positioned to receive light from the partial reflection mirror and provide imaging of the spatial light modulator in a lateral direction, and an extraction waveguide positioned to receive light from the reflective lateral anamorphic component. The reflective extraction element is positioned to extract the imaged light toward the observer's pupil while maintaining the fan directionality of the light rays from the spatial light modulator and the anamorphic imaging system. This provides a thin, transparent, and efficient anamorphic display device for augmented reality and virtual reality displays.

This application discloses an optical waveguide, a display component, and an AR device, relating to the field of optical waveguide technology. The optical waveguide includes an entrance pupil unit, a pupil expansion unit, a compensation unit, a deflection unit, and an exit pupil unit. An image beam emitted from an optomechanical system couples into the entrance pupil unit, and a portion of the field of view light enters the pupil expansion unit, propagates through the pupil expansion unit, and exits through the exit pupil unit. The remaining portion of the field of view light enters the compensation unit, propagates through the compensation unit and deflection unit, and exits through the exit pupil unit, ultimately forming a combined image of the complete field of view at the exit pupil unit. Compared to traditional pupil expansion units, the pupil expansion unit of this application only needs to handle a portion of the field of view light propagating from the entrance pupil unit, thus reducing the area of ​​the pupil expansion unit from the source. Simultaneously, by adding a compensation unit to receive the remaining field of view light, it is possible to achieve a larger field of view range while simultaneously miniaturizing the waveguide structure.