27 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.

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.

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.

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.

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.

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.

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 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.

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 application discloses an AR optical system, AR glasses and a zoom control method, wherein the AR optical system comprises an optical machine, a lens and a focusing assembly, the optical machine is used for emitting image light, the lens is used for receiving the image light and ambient light and emitting the image light and the ambient light to a human eye, an image light light path is formed between the human eye and the optical machine, and an ambient light light path is formed between the human eye and the ambient light, at least the image light light path is provided with the focusing assembly, the focusing assembly comprises a zoom element and a super-structure lens used for achromatization, and the super-structure lens is located at a rear end of a light path of the zoom element. The technical scheme is aimed at zooming a virtual image through the focusing assembly, so as to relieve the focusing and vergence conflict of AR display.

Embodiments of the present application disclose a display method, device, electronic equipment and computer readable storage medium, the method can be applied to the virtual reality / augmented reality device provided with a zoom lens group. The method can comprise: obtaining a human eye gaze area of a user; then obtaining depth information of the human eye gaze area; then the focal length value can be determined according to the depth information of the human eye gaze area, and the focal length of the zoom lens group is adjusted to the focal length value; finally, the multimedia information can be scaled based on the focal length value, and the scaled multimedia information is displayed. Embodiments of the present application can solve the problem of visual vergence accommodation conflict by dynamically adjusting the focal length of the zoom lens group.

Systems, methods, and computer program products for displaying virtual contents using a wearable electronic device determine the location of the sighting centers of both eyes of a user wearing the wearable electronic device and estimate an error or precision for these sighting center. A range of operation may be determined for a focal distance or a focal plane at the focal distance based at least in part upon the error or the precision and a criterion pertaining to vergence and accommodation of binocular vision of the virtual contents with the wearable electronic device. A virtual content may be adjusted into an adjusted virtual content for presentation with respect to the focal plane or the focal distance based at least in part upon the range of operation. The adjusted virtual content may be presented to the user with respect to the focal distance or the focal plane.

The present application relates to a metalens array-based binocular near-eye integral imaging three-dimensional (3D) display system, comprising: a first micro-display screen arranged within a right-eye field of view and a second micro-display screen arranged within a left-eye field of view. A first metalens array is arranged on the side of the first micro-display screen where an image is displayed, and a second metalens array is arranged on the side of the second micro-display screen where an image is displayed; the first micro-display screen and the second micro-display screen are used for providing image source light having binocular disparity, and the first metalens array and the second metalens array are used for modulating the image source light having binocular disparity to generate two 3D images having binocular disparity and depth information. Compared with conventional technologies, the present application can simultaneously achieve adjustment of the focal positions and the vergence angles of the left and right eyes of a viewer, bringing more realistic and accurate spatial 3D perception to users, and better conforming to natural viewing habits of the human body.

A method to determine a binocular alignment includes measuring a disassociated phoria of a patient at a first simulated distance by presenting fusible images including targets with a first parallax corresponding to the first simulated distance, using a headset stereo display at a screen distance; presenting non-fusible images by presenting the target for a first eye with the first parallax and presenting a disassociated targetless image for a second eye, and measuring the disassociated phoria in response to the presenting of non-fusible images, using an eye tracker of the headset; and determining a vergence of the patient at the first simulated distance by presenting fusible images for the first and second eyes with the first parallax, corrected with the measured disassociated phoria; measuring an associated phoria in response to the presenting of fusible images; and determining the vergence as a combination of the disassociated phoria and the associated phoria.

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 embodiment of the present application relates to myopia prescription fitting technical field, discloses a kind of myopia prescription giving method, device, electronic equipment and storage medium.The method comprises: receiving myopia examination data;Determine prescription suggestion according to the myopia examination data, and it specifically includes: S1, determine the dominant eye of patient and the size of v2 and v6;S2, determine prescription parameter when the dominant eye is left eye;S3, determine prescription parameter when the dominant eye is right eye;S4, determine the age of patient;S5, judge whether there is presbyopia;S6, judge the relationship of far convergence, near convergence, far eye position and near eye position;S7, the value of X and Y is directly output, as the right eye prescription degree and left eye prescription degree of myopia prescription fitting suggestion.The embodiment of the present application considers the case of dominant eye, adjustment, eye position, convergence, etc., not only guarantees the accuracy on degree, can also meet the comfort requirement of eye department persistence.

The invention relates to a method (50) for defining a focal plane (40) of a stereoscopic virtual image representation of an optical arrangement (20) which can be worn in front of an eye (1) and has at least one optical device (25) for entering the stereoscopic virtual image representation. The method comprises the steps of: determining an associated stephoria (52) of a person; measuring a dependency relationship (9) (53) between the convergence offset and the focus offset on the basis of the measured associated stephoria; measuring a curve (54) of the minimum relative convergence (11); determining a focal depth range (43) (55); determining a first focus offset (41) and a second focus offset (42), the diopter value of the second focus offset (42) being higher than the diopter value of the first focus offset (41), the focus offset between the first focus offset (41) and the second focus offset (42) corresponding to the determined focal depth range (43), the definition mode of the first focus offset (41) is that the convergence value of an intersection point formed by the first focus offset and the curve of the minimum relative convergence (11) does not exceed 1 diopter (56); and a focal plane (40) (57) defining a stereoscopic virtual image representation in a region between the second focus offset (42) and the first focus offset (41).

The application discloses a kind of self-adapting naked eye 3D display system and method based on physiological parameter real-time feedback, comprising: a naked eye 3D display panel, multiple display parameters thereof are configured to be dynamically adjustable;A multi-modal physiological monitoring module is integrated in the display system, for non-contact real-time acquisition of the physiological data of viewer, and the physiological data at least includes heart rate variability, blood pressure fluctuation and pupil dynamic parameter;A processing unit is configured to generate visual load index representing visual discomfort level based on the physiological data.The application can realize real-time sensing of the physiological state change caused by visual vergence adjustment conflict of viewer, and dynamically optimize display parameters according to individual differences, thereby significantly reducing visual fatigue and dizziness, improving the comfort and immersion experience of naked eye 3D viewing, and effectively solving the technical problems that existing naked eye 3D display technology cannot adapt to individual physiological differences due to the use of fixed parameter setting.

An automatic disparity adjustment system, including a pair of cameras and a controller. The pair of cameras are configured to photograph an object, so as to obtain a first image and a second image. The pair of cameras include two lenses with a distance therebetween. The controller is signally connected to the pair of cameras, and configured to execute the following steps. The first image is corrected with a first correction matrix, and the second image is corrected with a second correction matrix. A first corrected image and a second corrected image are cropped. A comfortable range of a binocular vergence distance is defined according to a viewing distance from a stereoscopic display to eyes of a user. A corrected binocular disparity is calculated according to the comfortable range, a first cropped image, and a second cropped image. An automatic disparity adjustment method is also provided.