9 results about "Eyes pupils" patented technology

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.

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.

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.

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 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.

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.

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.