46 results about "Vergence" patented technology

A computer-implemented system and method for pupil-directed retinal projection in near-eye displays are disclosed. The computer-implemented system provides smart glasses with directed physical pixels that project light beams / signals directly onto user's retina based on pupil position and size. The glasses comprise frame, lenses with directed pixel layers, sensors for tracking pupil movement. Each directed pixel generates multiple virtual pixels by rapidly changing its emission angle. Each directed pixel with pupil's real-time tracking, provides automatic adjustments to virtual contents, ensuring accurate alignment of images with field of view of users while identifying vergence-accommodation conflict. The glasses function as prescription lenses, virtual reality displays, augmented reality devices without traditional optical systems. Additional features include depth sensors, cameras, connectivity to peripheral devices. The glasses enable seamless blend of virtual and real-world experiences, creating immersive “Mixverse” environment. Various input methods, including gesture recognition and brain-computer interfaces, allow for intuitive control and interaction.

The invention provides a virtual reality display method and system, a computer and a storage medium. The method comprises the following steps: collecting sight movement data and head movement data of a user; predicting a fixation point area at the next moment based on the historical movement track of the fixation point area; according to the scene depth information, the sight line moving speed and the head motion data of the fixation point area at the next moment, predicting the predicted focal plane depth at the next moment, and dynamically adjusting the configuration of the micro-lens array in the optical assembly to match the predicted focal plane depth. The depth of a focal plane is predicted through fusion data of eye movement tracking and an inertial measurement unit, the configuration of a micro-lens array is dynamically adjusted, meanwhile, a display picture is divided into a fixation point area, a fuzzy display area and an atmosphere rendering area, and based on differentiation rendering processing, the convergence adjustment conflicts of vision are remarkably relieved, the graphic calculation load is reduced, and the display quality is improved. And a self-adaptive high-definition display effect is realized.

A method includes receiving scene image data, comprising left and right images for each eye. Through an eye tracking module, the method includes determining the user's gaze direction or eye vergence. Using this information, the method includes identifying an object in the scene that the user is focusing on, and determining, using a depth estimation module, a left depth from the left eye to the object and a right depth from the right eye to the object. Further, based on the computed left and right depths, the method includes generating, for the left and right eye, constant left and right depth meshes, generating a left and right output images by projecting the left and right images on the corresponding constant left and right depth meshes. Additionally, the method includes displaying the left output image for the left eye and displaying the right output image for the right eye.

The invention belongs to the technical field of medical instruments, and particularly relates to a pair of hyperopia correction glasses based on a refractive topographic map and a design method thereof. The pair of hyperopia correction glasses comprises a base lens, the middle part of the base lens is an out-of-focus-free area, an annular area outside the out-of-focus-free area is an out-of-focus stimulation area, the geometric center of the out-of-focus stimulation area coincides with the center of the out-of-focus-free area, and a plurality of out-of-focus correction areas are arranged on the base lens within the out-of-focus stimulation area. And a plurality of micro lenses with the same diopter are arranged in each defocus correction area. Based on the MRT peripheral defocus detection result of the patient, the individualized full-eye customization technology is adopted, accurate matching of the lens and the peripheral defocus of the retina is ensured, the defocus amount of eyeballs in different directions can be accurately adjusted through individualized customization, the eyeballs return to a comfortable area, the ideal hyperopia defocus state is formed, and the visual effect of the eyeballs is improved. The effects of promoting eye axis growth and treating hyperopia are enhanced.

A binocular visual field (VF) testing system and a method employing spherical (non-Euclidean) geometric modeling and eye-tracking technology to generate cyclopean visual field maps are disclosed. The system projects dichoptic stimuli to each eye independently at controlled fixation distances and dynamically records vergence responses using eye tracking. A non-Euclidean spatial encoding model based on logarithmic spirals and Jacobian analysis is applied to the resulting binocular data, enabling three-dimensional topographic field mapping. This approach extends traditional monocular field testing by accounting for retinal curvature, binocular integration, and fixation depth effects, resulting in volumetric visual field models more representative of real-world spatial perception. The system includes hardware (BINOSCOPE) and software modules that implement real-time depth encoding, topological mapping, and boundary detection of peripheral visual fields.

The invention discloses an AR glasses imaging distance adjusting system. The system comprises a sensor module, a processing module, a driving circuit module, left and right micro-display modules and a power supply module. The sensor module comprises a gyroscope, an eyeball tracking sensor and an eye axis length detection unit, and is used for detecting the angle change of the head and eyeballs, measuring the length of the eye axis and generating a signal; the processing module receives the signal, calculates offset through a diopter compensation algorithm unit and generates a control signal; the driving circuit module comprises a neural feedback driving unit and is used for receiving the control signal and converting the control signal into a driving signal; the left and right micro-display modules synchronously adjust an image angle and a light convergence angle through a pixel offset and light field modulation subunit; the power supply module supplies power to each module. According to the system, dynamic and personalized adjustment of the image combination distance is realized, the problems of convergence conflicts and eyestrain caused by the fixed image combination distance of traditional AR glasses are solved, and the physiological suitability and the user experience are improved.

Examples of assessing vergence capability of an individual are described. In an example, a first random dot stereogram is generated. The first random dot stereogram includes a first random arrangement of dots and a first sub-portion positioned against the first random dot stereogram. Thereafter, an input from an individual, identifying the position of the first sub-portion against the first random dot stereogram may be received. In response to receiving the input, a second random dot stereogram comprising a second sub-portion positioned against the second random dot stereogram, is generated. The second random dot stereogram comprises a second random arrangement which is different from the first random arrangement of dots in the preceding first random dot stereogram. In response to the second random dot stereogram, another input to identify position of the second sub-portion against the second random dot stereogram is received.

An optical field display apparatus (200) and an augmented reality display device (100), relating to the technical field of display devices. The optical field display apparatus (200) comprises an image apparatus (210) and an optical fusion device (220). The image apparatus (210) is configured to sequentially generate a plurality of virtual images at different viewing angles within a single cycle, the image apparatus (210) comprises an imaging element (10) and a plurality of light sources (20), all the light sources (20) sequentially emit light within a single cycle, any two light sources (20) do not emit light at the same time within a single cycle, the imaging element (10) modulates imaging light beams on the basis of light beams emitted by the light sources (20), and the plurality of imaging light beams generated within a single cycle are configured to sequentially form a plurality of virtual images at different viewing angles. The optical fusion device (220) sequentially projects, to human eyes, all the imaging light beams generated by the image apparatus (210) within a single cycle, and is configured to project ambient light beams to the human eyes, thereby achieving optical field display, and solving a vergence-accommodation conflict.

The application provides a display method of a head-up display device, a head-up display system and a carrier. The display method comprises the following steps: obtaining a gaze point position of both eyes in a virtual image display area; determining a gaze area in the virtual image display area according to the gaze point position; and performing 2D image display on at least part of a target 3D information image if the target 3D information image is located outside the gaze area. The embodiment of the application can reduce the vergence-accommodation conflict and the visual separation of a user, thereby improving the visual comfort of the user and reducing the fatigue of the user.

The invention discloses a control method of head-mounted display equipment, the head-mounted display equipment and a medium, and relates to the technical field of head-mounted equipment. The head-mounted display equipment comprises a zooming module, a driving module and an eyeball information acquisition module, and the method comprises the following steps: when a preset trigger event occurs, acquiring first eyeball information within a preset duration from the current moment through the eyeball information acquisition module; generating a zooming mode of the zooming module according to the first eyeball information and a pre-trained AI optical prediction model; the AI optical prediction model is used for predicting the zooming mode according to the eyeball information within the preset duration, and the zooming mode is that the zooming amount of the zooming module is controlled to reach the target zooming amount from the zooming moment. According to the method, the adjustment focal length of the eyeballs of the wearer after compensation of the zoom module is just matched with the virtual image distance of the virtual image displayed by the display screen, so that the convergence conflict, namely the VAC problem, can be avoided.

Eye movement tracking techniques obtain a more accurate estimate of gaze location on an image by determining the convergence locations of the user's eyes. A more accurate estimate of gaze position may be obtained by using a plurality of inputs, the plurality of inputs includes a coarse estimate of a gaze position using a camera that receives invisible light reflected from the eyes, a discrete probability of the gaze position for each eye, depth information of an object contained in the image, and saliency information of the object contained in the image.

A system and method are presented for measuring near point of convergence (NPC) and / or convergence recovery point (CRP) of patient's eyes. The system comprises: an eye tracking device configured and operable to provide measured eye-related data of the eyes being indicative of visual axes of the eyes associated with eyes' vergence during a measurement session; a target tracking device, being calibrated with respect to the eye tracking device, and being configured and operable to monitor distances from the eyes to a moving target, onto which the eyes are required to be focused during said measurement session, and to provide measured target-related data indicative of a relative target location relative to the eyes; and a memory and processing circuitry configured and operable to analyze the measured eye-related data and the measured target-related data and determine a relation between a change in the data indicative of the visual axes and data indicative of a change of said distance to the target during movement of said target during the measurement session, and to extract data indicative of said NPC and / or CRP from said relation.

Visual vergence determination is disclosed. In one embodiment, an artificial reality system determines that a performance metric of an eye tracking system is below a first performance threshold. The eye tracking system is associated with a head-mounted display worn by a user. The artificial reality system receives a first input associated with a body of the user and, based on the received first input, determines an area that the user is looking at within a field of view of the head-mounted display. The system determines a visual vergence distance of the user based on at least the first input associated with the body of the user, the area that the user is looking at, and a location of one or more objects in a scene displayed by the head-mounted display. The system adjusts one or more configurations of the head-mounted display based on the determined visual vergence distance of the user.

The application provides a display method of a head-up display device, a head-up display system and a carrier. The display method comprises the following steps: obtaining a gaze point position of both eyes in a virtual image display area; determining a gaze area in the virtual image display area according to the gaze point position; and performing blur processing on at least part of a target 3D information image if the target 3D information image is located outside the gaze area. The embodiment of the application can reduce the vergence-accommodation conflict and the visual separation of a user, thereby improving the visual comfort of the user and reducing the fatigue of the user.

A method of determining binocular alignment includes measuring an uncoupling phoria of a patient at a first simulated distance by: presenting a fusible image including a target having a first disparity corresponding to the first simulated distance using a stereoscopic display of a head-mounted device at a screen distance; presenting the target having the first disparity for a first eye and presenting an uncoupling null target image for a second eye to present a non-fusible image, and measuring an uncoupling phoria in response to the presentation of the non-fusible image using an eye tracker of the head-mounted device; and including determining a vergence of the patient at the first simulated distance by: presenting a fusible image having the first disparity corrected for the measured uncoupling phoria for the first and second eyes; measuring a coupling phoria in response to the presentation of the fusible image; and determining the vergence as a combination of the uncoupling phoria and the coupling phoria.

Eyewear such as a head-mounted device may include adjustable prescription lenses and / or displays. The eyewear may include gaze tracking circuitry that tracks a gaze direction of a user. A depth sensor may measure a depth map of an environment that is viewed through the lens. Using the principals of vergence, a fixation distance may be determined based on the binocular gaze directions of the user. The estimated fixation distance may be cross-checked with the depth map to obtain a more accurate fixation distance estimate. For example, when the gaze tracking circuitry detects a change in gaze direction that exceeds a threshold, a depth map may be analyzed to determine where the new gaze position intersects with the depth map. If desired, depth data may only be gathered and / or analyzed for a subregion of the environment surrounding the measured gaze position.

The invention discloses a method and equipment for inducing and analyzing a convergence-divergence related potential, relates to the technical field of computer display, electroencephalogram, event related potential and eye vision optics, and aims to provide a user with an electroencephalogram cap for performing a binocular split vision test, presenting a group of dot matrixes in front of each eye, obtaining a complete image through binocular image fusion, and displaying the complete image on the basis of the binocular split vision test. Image observation is carried out twice in a fixed time, if the images of the two image observation are different, a judgment key is pressed down, and the key judgment time and the electroencephalogram signals of the second image observation from beginning to end are recorded. According to the invention, more objective inspection index data is provided for research of the gathering and diverging function.

Aspects of the disclosure provide methods and apparatuses for gaze matching. In some examples, processing circuitry determines a position of an object of interest for a first user, and receives first one or more images of the first user that is taken by a camera at a camera position different from the position of the object of interest. The processing circuitry detects a first vergence of eyes of the first user, calculates a mismatch of the first vergence for viewing the object of interest, and performs a gaze correction of the first one or more images based on the mismatch of the first vergence for viewing the object of interest.

The application discloses a near-eye display system and a display method based on retinal projection, and belongs to the technical field of display products. The near-eye display system comprises an image generation unit, a waveguide device, a second phase element and a second polarization volume holographic element. The image generation unit is used for generating an imaging beam with image information. The waveguide device is used for receiving the imaging beam of the image generation unit and performing optical path folding on the imaging beam. The second phase element selectively converts the imaging beam into first polarized light or second polarized light. The second polarization volume holographic element is used for receiving the first polarized light or the second polarized light emitted by the second phase element. The second phase element selectively converts the first polarized light or the second polarized light to converge the first polarized light or the second polarized light to different view points through the second polarization volume holographic element. The application can increase the eye movement range and avoid image crosstalk and dark area phenomenon under the premise of solving the vergence accommodation conflict problem.

Methods and systems for assessing and / or treating visual disorders, such as discorder in accommodative ability and / or vergence ability, of a person are provided. Assessment and training exercises can be performed utilizing a computerized system in communication with a head-mountable display (HMD), such as a virtual or augmented reality display, which can display visual targets at various vergence and accommodative demands. Lenses, such as inverted bifocal lenses, may be used in combination with the HMD to mimic natural accommodative demand during viewing or to enable assessment and treatment of accommodation disorders. Corrective factors can be calculated and utilized for generation of visual targets to account for lens characteristics and / or interpupillary distance mismatch. Accommodation and vergence responses can be tracked during display of the visual targets at the various demands, and assessed in comparison to normalized values for assessment of vision disorders or utilized to track progress of user in treatment of a vision disorder.

An object of the present invention is to provide a stereoscopic image display device and a stereoscopic image display method of suppressing vergence accommodation conflict. The stereoscopic image display device of the present includes an image generation unit that generates a light field image at a predetermined viewpoint position; and an image display unit that displays an image having a depth in each of both eyes of a user on the basis of the light field image, in which the image display unit has a plurality of stacked display surfaces, and the plurality of display surfaces includes at least one first display surface and at least one second display surface having a higher light transmittance than the first display surface.

Systems and methods for discovering content and localizing it into an augmented reality space are presented. One method includes forming a three-dimensional (3D) map of a user's surrounding environment of an augmented reality (AR) head-mounted display (HMD), determining a depth directional position of a user's point of gaze based on an eye gaze direction and an eye vergence, determining a visual guide line path in the 3D map, guiding a user's action along the visual guide line path at one or more identified focal points, and rendering a mixed reality (MR) object along the visual guide line path at a location corresponding to the user's gaze direction.

The invention discloses a customized multi-focus lens and a design method thereof, the inner surface of a lens substrate is a free-form surface structure, and the customized multi-focus lens is designed based on personalized parameters of a user and an adjustment space model determined by the personalized parameters. The adjustment space model determines an object distance convergence and divergence range corresponding to a user from a relaxed adjustment state to a maximum adjustment state, and the object distance convergence and divergence range is obtained by iteratively optimizing an evaluation function; the evaluation function integrates the blurring intensity caused by oblique aberration, the adjustment weight associated with the adjustment ability of the user and the area weight for distinguishing the importance of different functional areas. According to the method, the dynamic adjustment space model based on the user adjustment amplitude is introduced, and the inner surface free-form surface iterative optimization and differentiated region weight strategy are combined, so that the precise control and surface smooth transition of the oblique aberration under the full view field and the full object distance are realized; therefore, the visual definition, the wearing comfort and the personalized adaptation capability of the lens are remarkably improved.

An eyewear apparatus includes a sensor for measuring a deformation of an eyewear frame to estimate an interpupillary distance (IPD) of an eyewear user. The sensor is used to determine a head width (HB) of the user and estimate an IPD of the user. The processor displays an image on the display of the eyewear according to the estimated IPD to improve virtual object rendering, thereby improving an augmented reality (AR) viewing experience while reducing variability adjustment conflicts (VAMs). User profile data, such as age and gender, may be used to generate a more accurately estimated IPD of the user.

The present application provides a multi-focal-plane holographic optical waveguide display system, comprising polarized image light sources, a first optical waveguide, and a second optical waveguide. At different moments, a holographic optical element responds to different polarization states, such that an optical waveguide AR display picture is imaged at different distances directly in front of human eyes, thereby forming a plurality of focal planes for display, effectively mitigating the problem of vergence-accommodation conflict of human eyes, and having the advantages such as high transmittance and diffraction efficiency, low process manufacturing cost, and an ultra-slim, lightweight form factor.

Systems and methods for discovering content and localizing it into an augmented reality space are presented. One method includes forming a three-dimensional (3D) map of a user's surrounding environment of an augmented reality (AR) head-mounted display (HMD), determining a depth directional position of a user's point of gaze based on an eye gaze direction and an eye vergence, determining a visual guide line path in the 3D map, guiding a user's action along the visual guide line path at one or more identified focal points, and rendering a mixed reality (MR) object along the visual guide line path at a location corresponding to the user's gaze direction.

The present application relates to a kind of Marfan syndrome lens subluxation eye equivalent intraocular lens position and intraocular lens power prediction method and system, the prediction method and prediction system are based on equivalent intraocular lens position prediction model and vergence formula not based on anterior chamber depth and lens thickness, obtain the equivalent intraocular lens position of patient, recommended intraocular lens power and postoperative actual refraction and target refraction etc. Data such as the selection of intraocular lens power of patient can be used to guide. The advantage of the present application is that, while considering the postoperative equivalent intraocular lens position of Marfan syndrome patient with different axial length and the postoperative refraction prediction error, based on the biological parameters and gender characteristics of Marfan syndrome patient eye, the precise calculation of intraocular lens power is realized, the postoperative refraction error is effectively reduced, the more ideal postoperative refraction state is reached, so as to improve the satisfaction of patient.

The application discloses a HUD display system based on retinal projection, a three-dimensional image display method and a vehicle, and belongs to the technical field of display products. The HUD display system comprises an image generation unit, which is used for generating a periodic left-handed polarization image and a right-handed polarization image; and a polarization volume holographic assembly, which comprises a left-handed polarization volume holographic element and a right-handed polarization volume holographic element arranged in layers. The left-handed polarization volume holographic element is used for receiving and diffracting the left-handed polarization image so that the left-handed polarization image converges to a first observation point. The right-handed polarization volume holographic element is used for receiving and diffracting the right-handed polarization image so that the right-handed polarization image converges to a second observation point. The application combines the retinal projection technology with the polarization volume holographic assembly, projects the parallax image signals into the human eyes without interference, and thus realizes three-dimensional display. The retinal projection technology has a large depth of field, and the human eyes can clearly see the image signals in a large depth range, so that the vergence accommodation conflict is avoided. Meanwhile, since the light path is simple and the optical system only comprises the image generation unit and the polarization volume holographic element, the volume and weight of the HUD display system are greatly reduced compared with mainstream schemes.

Aspects of the present disclosure provide a method and apparatus for gaze matching. In some embodiments, a processing circuit determines a position of an object of interest of a first user and receives a first one or more images of the first user captured by a camera at a camera position different from the position of the object of interest. The processing circuit detects a first convergence of eyes of the first user, calculates a mismatch of the first convergence to view the object of interest, and performs gaze correction of the first one or more images based on the mismatch of the first convergence to view the object of interest.

A computer-implemented system and method for pupil-directed retinal projection in near-eye displays are disclosed. The computer-implemented system provides smart glasses with directed physical pixels that project light beams / signals directly onto user's retina based on pupil position and size. The glasses comprise frame, lenses with directed pixel layers, sensors for tracking pupil movement. Each directed pixel generates multiple virtual pixels by rapidly changing its emission angle. Each directed pixel with pupil's real-time tracking, provides automatic adjustments to virtual contents, ensuring accurate alignment of images with field of view of users while identifying vergence-accommodation conflict. The glasses function as prescription lenses, virtual reality displays, augmented reality devices without traditional optical systems. Additional features include depth sensors, cameras, connectivity to peripheral devices. The glasses enable seamless blend of virtual and real-world experiences, creating immersive "Mixverse" environment. Various input methods, including gesture recognition and brain-computer interfaces, allow for intuitive control and interaction.