28 results about "Eyes pupils" patented technology

An optical system is presented for use in a near-eye mixed reality system. The system comprises a relay system defining an eyebox of the optical system, said relay system being configured and operable to relay a virtual image light field from a light-engine onto an eye pupil plane while combining said virtual image with real-world light field. The relay system is configured as a free space relay system configured for free space propagation of said virtual image light field being relayed, said free space relay system comprising at least one off-axis 4f-system. Each of said at least one off-axis 4f-system comprises at least one lens formed from at least one resonance-domain surface relief diffractive optical element (SRDOE) operable for combining said virtual image light field with the real-world light field, said at least one SRDOE being configured with a predetermined global surface relief pattern characterized by global variation of at least some of pattern parameters across said SRDOE.

A device for automated measurements of eyeball deviation and / or vertical and horizontal observation angles, comprising optomechanical system cooperating with image recording and display devices has a screen placed in an integrated housing, in front of which two symmetrically embedded optomechanical modules are mounted on the side arms said side arms are movably embedded on parallel, horizontal guideways arranged perpendicularly in relation to the side arms and driven along these guideways with a servo drive and driving elements, wherein every optomechanical module has a camera operating in the invisible light spectrum, optical tube fixing the lens system, vision switching off system, eye pupil illuminator operating in the invisible light spectrum, where the screen is placed perpendicularly to the axis of the lens system and at a distance that allows acute viewing of the screen and covering the possibly largest part of the eye's field of view.

The invention belongs to the technical field of eye movement tracking. The invention provides a near-eye pupil contour extraction method. According to the embodiment of the invention, the eye image collected by the high-speed eye camera is converted into the grey-scale map, then pupil coarse positioning is carried out, the approximate position of the pupil is calculated, finally edge detection is carried out on the pupil position area, ellipse fitting is carried out on the detected points, and then the parameters of the ellipse are output. The method has the characteristics of high detection speed and high precision. Rapid pupil position detection is carried out by reducing the resolution, edge detection is carried out by extracting the image of the area near the pupil center, and rapid extraction of the pupil contour is achieved.

A directional illuminator for a display apparatus includes a switchable diffuser for tuning a divergence of a light beam illuminating a display panel of the display apparatus. The tunable divergence of the illuminating light beam translates into a tunable exit pupil size at the eyebox of the display apparatus, which may be matched to a pupil size of a user's eye, thus providing a configurable illumination of the eye pupil. A tiltable reflector in an optical path of the illuminating light beam may be used to shift the location of the exit pupil at the eyebox of the display apparatus.

Embodiments include an optical system that may be included in a waveguide display. A waveguide apparatus according to some embodiments includes an in-coupler grating having a first grating vector G1 substantially perpendicular to a first axis, x; a first eye pupil expander grating having a second grating vector G2 and a first angle ΦG with respect to the first axis; a second eye pupil expander grating having a third grating vector G3 and an angle substantially equal to 90°+ΦG with respect to the first axis; and an out-coupler grating having a fourth grating vector G4 substantially perpendicular to the first axis. Example embodiments describe relationships among the grating vectors, the angle ΦG, and associated parameters to achieve a satisfactory field of view while reducing distortion.

The present application provides an eye tracking display device and its method and near-eye display equipment, which can solve the problem of not seeing images or image ghosting caused by small eye sockets. The eye tracking display device comprises: a laser scanning projection component for projecting image light with variable image position according to an encoded input image source; a holographic optical element for redirecting and reflecting the image light to image on the retina, and inversely reflecting the image light reflected back via the retina; and an eye tracking component, which comprises a photosensitive element and a light splitting element arranged on the photosensitive side of the photosensitive element. The light splitting element is arranged in the light path between the laser scanning projection component and the holographic optical element, for reflecting the projected image light to propagate to the holographic optical element, and transmitting the inversely reflected image light to propagate to the photosensitive element; and the photosensitive element is used to capture the image light transmitted through the light splitting element to track the eye pupil posture.

The invention belongs to the technical field of optics, and particularly relates to a compound eye pupil optimization method. Comprising the following steps: S1, taking an external spherical surface of a regular icosahedron as a sub-eye distribution carrier, and uniformly distributing sub-eyes of the heterogeneous curved surface compound eye system through edge subdivision optimization, multi-direction surface subdivision and clustering and gravity center calculation; and S2, calculating an equivalent inclination angle generated by each sub-eye channel in the optical relay system of the heterogeneous curved surface compound eye system due to pupil shift, and based on the equivalent inclination angle of each sub-eye channel, applying inclination compensation which is equal in size and opposite in direction to each sub-eye on a physical structure so as to realize optical path correction of the heterogeneous curved surface compound eye system. The performance of the heterogeneous curved surface compound eye system can be remarkably improved, the distribution uniformity of sub-eyes is remarkably improved, and the edge imaging quality is greatly improved.

The present invention discloses an auxiliary wearing additional module and method for a head-mounted display. After the additional module is added to the HMD, the module and algorithm can be used to calculate and assist in locating the eye position of the user currently wearing the HMD, so that an outsider can help the user adjust the HMD. The additional module is: two helmet lens through holes are opened on the support plate corresponding to the positions of the eyes; two infrared cameras and one infrared light source are set above each helmet lens through hole. The infrared camera collects human eye images under the auxiliary illumination of the infrared light source and sends them to the processor. The processor is used to calculate the current human eye position parameters based on the collected human eye image and display them on the display. The auxiliary wearing method provided by the present invention realizes the determination of the eye pupil relative to the module space coordinates, realizes the graphical representation of the user's current eye position, realizes the user's auxiliary wearing process, and prompts the user's eye working status.

Binocular optoelectronic eyewear instrument for the vision enhancement of both eyes and vision enhancement method. The instrument comprises: - at least one phase modulator (15, 16, 27, 28) for the wavefront manipulation of both eye pupils, for performing the vision correction of the eye aberrations, - a binocular assembly of optical components for the light relay from entrance pupils (05, 06) to exit pupils (07, 08), - a processing module (30) for communication, control, and computations, and - at least one image capture device (09, 10). The associated method involves the generation and relay of phase profiles for binocular vision correction of eye aberrations, image capture and tracking of both eye pupils, as well as computations, control, connectivity, and operation of the instrument.

The invention relates to the technical field of medical treatment, in particular to an eye pupil detection and treatment device which comprises two eye mirror frames, a distance adjusting mechanism for adjusting the distance is arranged between the two eye mirror frames, and L-shaped fixing supports are arranged on the opposite sides of the two eye mirror frames. A first elastic bandage is connected between the two L-shaped fixing supports and used for fixing the two eye glasses frames to the eyes of a person to be tested. The eye mirror frame can be tightly attached to the periphery of the eye of the to-be-detected person through the elastic adsorption attaching mechanism, so that the opening mechanism can smoothly open the eyelids of the to-be-detected person, then the pupils of the to-be-detected person leak out, and the pupil condition of the to-be-detected person can be conveniently detected through the detection mechanism.

A holographic display includes an illuminator, a spatial light modulator (SLM) coupled to the illuminator, a beam redirector and an ocular lens coupled to the SLM. A controller is operably coupled to the SLM and the beam redirector and configured to provide exit pupils at eyebox locations where a holographic image may be observed. The exit pupils provided in a time-sequential manner, forming a grid of exit pupils / eyebox locations. An eye tracking system may be used to center the grid around the current eye pupil position, to provide a larger overall eyebox for viewing the holographically generated image.

The present application relates to an optical device for augmented reality, comprising: an optical unit that transmits at least a part of visible light, a first reflection part group composed of at least one reflection part, at least one reflection part of the first reflection part group being arranged in a row in a first direction on a surface or inside the optical unit, and a second reflection part group composed of at least one reflection part, at least one reflection part of the second reflection part group being arranged in a row in the first direction on the surface or inside the optical unit and being arranged in parallel with the reflection parts of the first reflection part group at a spacing apart in a second direction perpendicular to the first direction; the reflection parts reflecting image light emitted from an image exit part that emits image light corresponding to an augmented reality image toward a user's eye pupil, a horizontal line passing through the center of each reflection part of the second reflection part group and parallel to the second direction and a horizontal line passing through the center of each reflection part of the first reflection part group and parallel to the second direction being arranged in parallel in order.

An eye tracking device includes M light sources configured to emit N different types of light to a user's eye, M is a positive integer greater than or equal to 2, N is a positive integer greater than or equal to 2, and N is less than or equal to M; a camera module including a light filtering assembly and an image sensor; wherein the light filtering assembly is configured to filter at least part of the light reflected after the M light sources illuminate the eye, the light filtering assembly includes a plurality of light filtering units, and at least N sub-regions are included in the light filtering units, wherein the light filtering units filter at least the N different types of light, and one sub-region filters one type of light; the image sensor is configured to obtain the filtered at least part of the light to obtain an eye pupil image. The eye tracking device can accurately match the light spot and the light source.

To provide an arousal level measurement method that identifies the occurrence order of specific ocular and pupillary movements that appear with a decrease in arousal, and determines the arousal level.SOLUTION: An arousal level measurement method measures changes in eye movement and pupil diameter by performing ocular and pupillary measurements, detects, as an ocular alertness index (Ocular Alertness Index) for evaluating arousal, a shortening of intersaccadic intervals (Frequent saccade), a decrease in peak saccadic velocity (Slow saccade), slow fluctuations in eye position (Slow eye movement), and the co-occurrence (Div-mio) of divergence contrary to the near reflex (Divergence) and miosis (Miosis), and evaluates the decrease level of arousal on the basis of the occurrence order of the ocular alertness indices.SELECTED DRAWING: Figure 14

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

The invention is suitable for the technical field of electrical digital data processing, and provides an optometry data measurement method, device and equipment, and the method comprises the steps: obtaining a user image of a user to be subjected to optometry; based on the user image and a preset reference object, generating a prefabricated frame which is equal to the preset reference object in proportion at a preset position of the user image; re-acquiring the user image of the user to be subjected to optometry until the preset reference object in the re-acquired user image coincides with the prefabricated frame, and sending a prompt word for prompting the head movement of the user to be subjected to optometry; acquiring head movement video data of the user to be subjected to optometry moving according to the cue word; and based on the head motion video data, obtaining a left eye pupil distance and a right eye pupil distance of the user. The optometry efficiency can be improved while the accuracy of the optometry data is improved.

The present invention discloses a closed-eye pupil monitoring system and method, aiming to address the problems of low accuracy and inconvenient operation in existing closed-eye pupil monitoring technologies. The system includes a near-infrared luminous contact lens and a wearable eye mask-like device. The contact lens is equipped with a ring-shaped near-infrared LED and an ASIC chip, which are wirelessly powered by radio frequency and emit near-infrared light that is transmitted through the pupil. The eye mask-like device captures the light transmitted by the pupil with a micro CMOS camera and combines it with an FPGA main control system for real-time image processing to accurately monitor pupil size. This invention has the advantages of integrated data acquisition and processing, simple algorithm processing, flexible application scenarios, and low processing latency.

The invention discloses a visualization processing method and system based on an intelligent monitoring display, and relates to the technical field of monitoring visualization. The method comprises the following steps that a data interface obtains external monitoring data and an organization structure, the data interface transmits the monitoring data and the organization structure to a processing unit, the organization structure comprises roles, post work contents of the roles and identification photos of the roles, the processing unit forwards the monitoring data and the organization structure to a classification module, and the classification module is used for classifying the monitoring data and the organization structure. According to the system and the method, the monitoring data are intelligently sorted through the classification module and the grading module, the displayed monitoring data content and the arrangement sequence are changed by identifying role information of viewing personnel, and the monitoring data are classified through the classification module and the grading module. The motion direction of the eye pupils of the user is obtained through the zoom sensor, the attention direction of the user is analyzed, graphical monitoring data are correspondingly and dynamically adjusted, and graphical content is conveniently displayed.

An ophthalmoscope provides one or more eyepiece lenses that provide an adjustable entrance pupil allowing the entrance pupil of the ophthalmoscope to match the entrance pupil of the eye to increase the collected image information within the constraints of the eye pupil size, reducing scan times for given light energy.

The application provides a protective eyeshield field of view detector and a method thereof. The detector comprises a head model, a head model positioning device and a laser emitter. The head model is installed on the head model positioning device. The head model has two eye pupils each having a pupil positioning point. The head model positioning device comprises a support, a horizontal shaft, a swing seat, a rotating disc and a support seat. The swing seat is rotatably connected to the support through the horizontal shaft. The swing seat is provided with a first protractor for measuring the rotation angle of the swing seat. The horizontal shaft is horizontally through the two pupil positioning points. The rotating disc is rotatably installed on the swing seat. The rotating disc is provided with a second protractor for measuring the rotation angle of the rotating disc. The support seat is installed on the rotating disc. The head model is installed on the support seat. The laser emitter is arranged in front of the head model. The detector and the method thereof are convenient for field of view detection of protective eyeshields and masks. The detection data can be directly obtained, and the detection sample can be quickly judged.

The invention provides an infrared near-eye pupil detection method based on a pulse neural network, and the method comprises the steps: obtaining an infrared near-eye image, and inputting the infrared near-eye image into a pre-trained pupil detection model, so as to output a pupil position. The model takes a'trunk-neck-detection head 'structure of YOLOv8 as a benchmark to carry out pulse reconstruction and lightweight adaptation: a lightweight pulse feature extraction module P-Block1 is connected in series in a trunk network, downsampling operation is carried out, and multi-scale spatial-temporal features are extracted; in the neck network, P-Block1 is combined with up-sampling and splicing operation to replace an original feature pyramid network, and cross-scale feature fusion is realized. According to the invention, the pulse neural network reconstruction and lightweight design of the system are carried out based on the YOLOv8 architecture, so that the strong feature extraction and target detection capabilities of the original framework are inherited, and the characteristics of event driving and sparse calculation are introduced through the pulse design; the method realizes excellent balance among detection precision, model efficiency and operation power consumption, and is especially suitable for near-eye interaction scenes with limited resources.

The embodiment of the utility model belongs to the technical field of automobile energy conservation. The utility model further relates to an automobile energy-saving system, which comprises at least one wide-angle infrared camera, at least one wireless communication module, at least one wireless communication module, at least one wireless communication module and at least one wireless communication module, the display screen control unit is connected with the wide-angle infrared camera and used for receiving information captured by the camera and further used for judging whether people in the vehicle are watching the display screen or not so as to control on and off of the display screen. The wide-angle infrared camera is installed at the key position in the vehicle, the camera is used for capturing the face deflection direction and eye pupil information of the person in the vehicle, the on-off state of the display screen is intelligently controlled, only when the person in the vehicle needs to view the screen, the corresponding display screen can be turned on, and the display screen can be turned off. Therefore, accurate distribution and efficient utilization of energy are achieved, the energy utilization efficiency of the new energy automobile is improved through the energy-saving scheme, and driving intelligence and comfort are enhanced.

A compact augmented reality (AR) display system is described herein. The AR display system includes an eyeglass frame and a pair of near-eye pupil forming catadioptric optical engines mounted to the eyeglass frame. The pair of near-eye pupil forming catadioptric optical engines are mounted to the eyeglass frame and spaced along the longitudinal axis. Each of the near-eye pupil forming catadioptric optical engines includes an image generator forming a 2D image, an optical imaging assembly, and an optical image relay assembly, which includes the image generator and the lenses or other optics to present the image correctly to the user. The pair of near-eye pupil forming catadioptric optical engines enable viewing the 2D image binocularly in 3D.

A light field generating device, the device displaying a near-eye light field, the device comprising: a scoreboard, wherein the display panel is divided into a plurality of sub-areas, each of the sub-areas displaying a subset of light field information; a projection lens array unit, wherein a plurality of scenes are emitted at a position beyond a common aperture from the sub-regions of the display panel by the projection lens array unit; and a fusion lens unit, wherein light rays passing through the projection lens array unit be focused on an imaging plane to create a three-dimensional real image of a light field, wherein the real image is emitted through an ocular unit into the pupil of the eye to be displayed on the retina and perceived as having been obtained from a location almost infinitely distant.

The invention discloses a living body detection method, device and equipment, and relates to the technical field of computer information security, the living body detection method comprises the following steps: playing a preset guide video, and guiding a detected object to watch the preset guide video, the preset guide video at least comprising a geometric pattern in a motion state; the method comprises the following steps of: acquiring face video data of a detected object, and respectively analyzing an eye pupil movement track, an eye pupil convergence response condition, a reflection image of a cornea region and a pupil diameter change condition of the detected object according to the face video data; obtaining a corresponding collaboration score, a convergence response score, a curved surface reflection score and a light reflection score, and carrying out weighted summation to obtain a comprehensive score; and by comparing the comprehensive score with a preset score threshold, determining a living body detection result of the detected object, the living body detection result being passing or not passing. The technical problem that a traditional living body detection scheme is easily counterfeited and attacked can be solved.

The utility model provides a kind of portable short-focus near-eye display system, it is related to near-eye display technical field, solve the contradiction between optical performance and volume in existing AR technology, the system includes micro display, inner side lens and concave partial mirror;It is inner side lens close to eye pupil position, and it is concave partial mirror far from eye pupil position;Micro display is rotating linear display or transparent display.Light path is folded by multiple reflections, the distance between convex part mirror and concave partial mirror is shortened, the thickness of glasses can be reduced to maximum amplitude, and thinness is realized.

The invention discloses an eye movement interaction screen calibration method and device, a medium, equipment and a vehicle, and the method comprises the steps: carrying out the sight line estimation of a plurality of face images based on a sight line estimation model, and obtaining the pupil coordinates of left and right eyes and a sight line direction vector in each face image; according to the left and right eye pupil coordinates and the sight line direction vector in each face image, determining a sight line path corresponding to the face image; according to the measurement estimation coordinates of the at least three target points on the screen, determining an initial estimation plane equation of the screen; according to the sight line path corresponding to each face image in the plurality of face images and the initial pre-estimation plane equation, determining coordinates of an intersection point of each sight line path and the initial pre-estimation plane equation and estimated coordinates of each target point in a camera coordinate system; the estimated coordinates of the multiple target points, the coordinates of the intersection points and the height and width of the screen are substituted into a loss function, the loss function is solved through a least square method, and the optimal estimated coordinates of the multiple target points are obtained to serve as calibration coordinates.

The present invention discloses an image processing algorithm for real-time extraction of pupil center and trajectory tracking in the closed-eye state. From the perspective of digital image processing, this algorithm first performs grayscale conversion, contrast enhancement, and smoothing processing on each frame of the input eye video. Then, by using adaptive threshold segmentation technology and combining morphological operations and the Canny edge detection operator, it can accurately extract the boundary of the pupil region. Subsequently, the least squares method based on geometric distance is used to accurately fit the elliptical parameters of the pupil contour, thereby obtaining the center coordinates and area information of the pupil, significantly improving the accuracy and reliability of pupil monitoring in the closed-eye state. By recording and analyzing the changes in the pupil center position in the time series, real-time tracking of the pupil movement trajectory is achieved. Finally, baseline correction and smoothing filtering processing are adopted to evaluate the pupil light reflex (PLR) in the closed-eye state before and after white light excitation. This method has the advantages of strong robustness, adaptability to light changes, high real-time performance, and high precision.