44 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 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 provides an interpupillary distance detection method, a storage medium and electronic equipment, after a left view image and a right view image are acquired, a first left eye pupil position and a first right eye pupil position in the left view image are analyzed, and a second left eye pupil position and a second right eye pupil position in the right view image are analyzed. And determining the parallax of the left-eye camera and the right-eye camera. And determining the shooting depths of the left eye pupil and the right eye pupil. And finally converting the positions of the two pupils in the plane image into an expression mode under a world coordinate system through coordinate system conversion. In a world coordinate system, the accurate pupil distance can be obtained by directly using the coordinates of the two pupil positions to carry out distance calculation. According to the scheme, the position representation mode of the left eye pupil and the position representation mode of the right eye pupil are finally achieved in the coordinate representation mode under the same world coordinate system, the mode that the pupil distance is calculated by restoring the real positions of the two pupils is adopted, the obtained pupil distance detection result is more consistent with the actual situation, and the obtained lens matching result is more consistent with the requirement.

The invention discloses a free-form surface-based focusing-free fundus imaging system, and belongs to the technical field of fundus imaging. The system comprises a light source module, a light splitting module, a light condensing module, a scanning module, a transmitting mirror group, an eyepiece group and a light detection module, the entrance pupil of the transmitting mirror group is located at the focus of the first parabolic mirror, and the eye pupil is located at the focus of the second parabolic mirror. The transmission lens group is used for correcting field aberration and human eye diopter aberration and comprises a first lens, a second lens, a first free-form surface lens, a second free-form surface lens, a third lens and a fourth lens; the third lens and the fourth lens converge the light of the eyepiece group to form a first image surface; the first free-form surface lens and the second free-form surface lens modulate the phase of the first image surface and correct diopter aberration; the first lens and the second lens perform aberration correction on the exit pupil and compress the light size to match the scanning module. The system has the advantages of ultra-wide angle, high resolution, no mydriasis and simple operation.

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 present application relates to the technical field of smart glasses, and discloses an optical waveguide piece, glasses frames, and smart glasses. The optical waveguide piece comprises: a waveguide substrate; a coupling-in region; and a coupling-out region, the coupling-in region and the coupling-out region being arranged on the waveguide substrate, the coupling-in region being used for coupling light into the waveguide substrate, and the coupling-out region being used for coupling out light propagating in the waveguide substrate. The central position of the coupling-out region is located at an upper side of the projection position on the optical waveguide piece of the eye pupil center of a wearer. The present application aims to solve the problem of a user being unable wear smart glasses for a long time due to the appearance of Newton's rings on the smart glasses.

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.

Embodiments include an optical system that may be included in a waveguide display. An example apparatus includes an image generator configured to generate an image having an upper portion and a lower portion. A waveguide is provided with an in-coupler and an out-coupler, the in-coupler being arranged to couple the upper and lower portions of the image along an optical path to the out-coupler. Along the optical path, at least first and second polarization-selective diffraction gratings are configured to cooperatively direct the upper portion of the image toward the out-coupler. At least third and fourth polarization-selective diffraction gratings are configured to cooperatively direct the lower portion of the image toward the out-coupler.

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 invention pertains to a projector device for projecting a light beam onto a retina of a human eye, comprising a projector for projecting a light beam from the exterior of a human eye through a pupil of the eye, wherein the projector is configured such that an exit pupil diameter of the light beam is set smaller than an eye pupil diameter of the eye, a corresponding method, and a device comprising such a projector device.

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 soft contact lens, which includes a lens body, a microporous structure and an anti-blocking structure. The lens body includes an optical zone and a non-optical zone, wherein the optical zone covers the visual area of ​​the pupil of the eye, and the non-optical zone surrounds the optical zone and is arranged concentrically with the optical zone; the microporous structure runs through the non-optical zone to prevent corneal hypoxia; the anti-blocking structure can be detachably connected to the microporous structure to intercept foreign matter from the outside. The microporous structure of the technical solution of the present invention can allow external oxygen to enter the cornea smoothly, reduce the incidence of corneal complications caused by insufficient corneal oxygen supply, and prevent the entry of foreign matter through the anti-blocking structure, further ensuring the normal use of the soft contact lens.

The invention provides a display device, display equipment and a display method, the display device comprises a display assembly, the display assembly comprises a plurality of first reflector groups and second reflector groups which are arranged in a crossed array, and an orientation device is used for driving first reflectors and second reflectors to adjust angles and lock the first reflectors and the second reflectors; and the control device is used for controlling the orientation device to adjust and lock the angles of the first reflector and the second reflector according to the spatial positions of the left eye pupil and the right eye pupil acquired by the depth camera, the spatial positions of the first reflector and the second reflector and the spatial position of the laser transmitter. In the scheme, the viewpoint density is determined by the angle adjustment step length of the first reflector and the second reflector of the display assembly, and the visual angle is determined by the adjustable angle range of the first reflector and the second reflector, so that the restrictive relationship between the viewpoint density and the visual angle is reduced, and the display effect is improved. And the display effect of the three-dimensional display equipment can be improved.

A display system aligns the location of its exit pupil with the location of a viewer's pupil by changing the location of the portion of a light source that outputs light. The light source may include an array of pixels that output light, thereby allowing an image to be displayed on the light source. The display system includes a camera that captures image(s) of the eye and negatives of the eye image(s) are displayed by the light source. In the negative image, the dark pupil of the eye is a bright spot which, when displayed by the light source, defines the exit pupil of the display system, such that image content may be presented by modulating the light source. The location of the pupil of the eye may be tracked by capturing the images of the eye.

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.

One embodiment provides a method, including: obtaining, utilizing at least one image capture device, at least one image of an eye of a user; identifying, from the at least one image, a plurality of characteristics of the eye, wherein at least one of the characteristics includes a position of a pupil of the eye; generating, based upon the plurality of characteristics of the eye, a plurality of images, wherein each of the plurality of images is generated for a portion of the eye; and presenting, utilizing at least one display device, the plurality of images to the eye, wherein each of the plurality of images is presented to a portion of the eye corresponding to the image generated for the given portion of the eye. Other embodiments are described herein.

The present invention relates to the field of artificial intelligence, and specifically to a binocular diopter calculation method and system based on a convolutional neural network, specifically: constructing a pupil image sequence corresponding to a light group sequence according to the lighting order of the light groups in the light group sequence, inputting the pupil images into the corresponding convolution-based backbone network according to the order of the pupil images in the sequence to extract features to obtain a one-dimensional vector, and then obtaining a feature matrix; adding a learning vector to the feature matrix, inputting the feature matrix after dimension expansion into a ViT model, transposing the output of each encoder, using the transposed vector as the input of the next encoder, obtaining the first row and the first column of the feature matrix output by the ViT model; inputting the first row and the first column into two detection heads respectively and further obtaining the diopter value through the output of the two detection heads. The present invention effectively improves the accuracy of binocular diopter calculation.

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.