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66 results about "Vergence" patented technology
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A vergence is the simultaneous movement of both eyes in opposite directions to obtain or maintain single binocular vision. When a creature with binocular vision looks at an object, the eyes must rotate around a horizontal axis so that the projection of the image is in the centre of the retina in both eyes. To look at an object closer by, the eyes rotate towards each other (convergence), while for an object farther away they rotate away from each other (divergence). Exaggerated convergence is called cross eyed viewing (focusing on the nose for example). When looking into the distance, the eyes diverge until parallel, effectively fixating the same point at infinity (or very far away).
Variable focus stereoscopic display system and method
ActiveUS20120250152A1Increase focal lengthShorten focal lengthSteroscopic systems3D-image renderingDisplay deviceVergence
Owner:HONEYWELL INT INC
Augmented reality display system for evaluation and modification of neurological conditions, including visual processing and perception conditions
ActiveUS20170365101A1Increase alertnessImprove plasticityMedical automated diagnosisMental therapiesWavefrontPattern perception
In some embodiments, a display system comprising a head-mountable, augmented reality display is configured to perform a neurological analysis and to provide a perception aid based on an environmental trigger associated with the neurological condition. Performing the neurological analysis may include determining a reaction to a stimulus by receiving data from the one or more inwardly-directed sensors; and identifying a neurological condition associated with the reaction. In some embodiments, the perception aid may include a reminder, an alert, or virtual content that changes a property, e.g. a color, of a real object. The augmented reality display may be configured to display virtual content by outputting light with variable wavefront divergence, and to provide an accommodation-vergence mismatch of less than 0.5 diopters, including less than 0.25 diopters.
Owner:MAGIC LEAP
Refraction measuring instrument
InactiveUS20060215111A1Small sizeReduce weightRefractometersSkiascopesMeasuring instrumentBeam splitting
A refraction measuring instrument for measuring the refraction of an eye to be examined while the subject is viewing an external object in a more natural posture. A measuring light beam from a light source 21 is reflected from a mirror 25, shaped into a beam with a ring cross section, directed to a free curved surface prism 31 along an optical axis O2, reflected from a surface 31b and a beam splitting surface 31a, guided to an eye E along an optical axis O1 together with the visible light from outside the instrument, and form a ring pattern on the fundus F. The measurement beam reflected from the fundus F is received by a CCD 23 through the free curved surface prism 31 and a prism 22, and a ring pattern is imaged. A calculation control device 4 analyzes the imaged ring pattern and calculates the sphericity, the degree of astigmatism, and the astigmatic axis angle. For measurement, the subject A wears the refraction measuring instrument 1 on the head H through a wearing section 1a.
Owner:KK TOPCON
See-through computer display systems
Aspects of the present invention relate to methods and systems for the see-through computer display systems with focus and / or vergence adjustment systems.
Owner:OSTERHOUT GROUP INC
See-through computer display systems
InactiveUS20160286177A1Spectales/gogglesInput/output for user-computer interactionVergenceComputer engineering
Aspects of the present invention relate to methods and systems for the see-through computer display systems with focus and / or vergence adjustment systems.
Owner:OSTERHOUT GROUP INC
See-through computer display systems
Aspects of the present invention relate to methods and systems for the see-through computer display systems with focus and / or vergence adjustment systems.
Owner:OSTERHOUT GROUP INC
See-through computer display systems
Aspects of the present invention relate to methods and systems for the see-through computer display systems with focus and / or vergence adjustment systems.
Owner:OSTERHOUT GROUP INC
Augmented reality systems and methods with variable focus lens elements
ActiveUS20170293145A1Input/output for user-computer interactionNon-optical adjunctsRefractive errorOphthalmology
An augmented reality display system includes a pair of variable focus lens elements that sandwich a waveguide stack. One of the lens elements is positioned between the waveguide stack and a user's eye to correct for refractive errors in the focusing of light projected from the waveguide stack to that eye. The lens elements may also be configured to provide appropriate optical power to place displayed virtual content on a desired depth plane. The other lens element is between the ambient environment and the waveguide stack, and is configured to provide optical power to compensate for aberrations in the transmission of ambient light through the waveguide stack and the lens element closest to the eye. In addition, an eye-tracking system monitors the vergence of the user's eyes and automatically and continuously adjusts the optical powers of the pair of lens elements based on the determined vergence of those eyes.
Owner:MAGIC LEAP
Generalized presbyopic correction methodology
An adaptive optics phoropter is aligned with a Badal optometer and an adjustable aperture component to subjectively determine an optimal vision correction as a power profile for an ophthalmic lens or ablating a cornea. The optimal power profile is preferably determined in an iterative process by adjusting the vergence of the Badal optometer and aperture size of the adjustable aperture component for power profiles with presbyopic power zones having different amplitudes, shapes, widths, and / or de-centering. Also included is a method of recursively computing a refractive surface with a regular presbyopic power zone (e.g., according to the optimal power profile) and adding it onto an underlying irregular Zernike-basis-set aberration-corrected surface in a linear fashion for fabricating an ophthalmic lens.
Owner:ALCON INC
Iris image blurring determination method and device
The invention discloses an iris image blurring determination method and device. The method comprises steps of using radial symmetry transform to position pupils in an iris image; capturing an area of interest in the iris image, wherein the area of interest comprises a pupil boundary and pupils and irises at two sides of the pupil boundary; performing Gaussian fitting of the gradient value of the area of interest in the pupil radius direction, so as to obtain a blurring grade which is a divergence parameter of a Gaussian function obtained by fitting; and determining whether the blurring grade is larger than a blurring grade threshold or not, and if so, determining the iris image as a blurring one. Compared with the prior art, the method provided by the invention is higher in determination accuracy and faster in operation speed, and improves the iris identification performance.
Owner:BEIJING EYECOOL TECH CO LTD +1
Eye vergence detection on a display
ActiveUS20150192992A1View effectivelyEffective interactionInput/output for user-computer interactionCathode-ray tube indicatorsDisplay deviceComputer science
One embodiment of the present invention sets forth technique for displaying an image based on eye vergence. The technique includes determining a first distance from one or more eyes of a user to a display location, and determining, based on eye gaze vectors associated with the eyes of the user, an eye convergence distance. The technique further includes causing the image to be displayed when the eye convergence distance is substantially the same as the first distance, or causing a display of the image to be terminated when the eye convergence distance is not substantially the same as the first distance.
Owner:HARMAN INT IND INC
Method for designing multifocal contact lenses
The invention provides methods for designing contact lenses that takes into account pupil size and vergence. The lenses of the invention augment the eye's accommodative gain and take advantage of the eye's residual accommodation amplitude.
Owner:JOHNSON & JOHNSON VISION CARE INC
Method for optimizing slope of open-pit mine
InactiveCN1598857AReduce the amount of rock strippingReduce production stripping ratioUnderground miningSurface miningEngineeringWater table
The invention relates to strip mine's slope beside hill optimization. It belongs to strip mine's slope beside hill engineering technology field. Its steps are: build GIS data module; build side slope stabilization three dimension limit balance analysis module based GIS; realize arithmetic of three dimension module based on GIS and side slope optimization. Adopting GIS space analysis function, engineering geology, geography condition and hydrogeology information relative to side slope stabilization is presented into data structure, database design, space data analysis method etc. in GIS data model. Information relative to side slope of stratum, structure face, water table etc are presented through GIS data layer. All input data are converted in form of grid. The data are ground height, vergence direction, tile angle, ground water, ground floor, slip surface and physical mechanics parameters of space distribution. Each three dimension grid column unit can descript a kind of geography information relative to stabilization analysis of ground, stratum, slip surface etc. Adopting the invention, side slope can be optimized to reduce amount of ripping rock and production shell-exploit rate.
Owner:UNIV OF SCI & TECH BEIJING
Augmented reality systems and methods with variable focus lens elements
ActiveUS20200057309A1Input/output for user-computer interactionNon-optical adjunctsRefractive errorOphthalmology
An augmented reality display system includes a pair of variable focus lens elements that sandwich a waveguide stack. One of the lens elements is positioned between the waveguide stack and a user's eye to correct for refractive errors in the focusing of light projected from the waveguide stack to that eye. The lens elements may also be configured to provide appropriate optical power to place displayed virtual content on a desired depth plane. The other lens element is between the ambient environment and the waveguide stack, and is configured to provide optical power to compensate for aberrations in the transmission of ambient light through the waveguide stack and the lens element closest to the eye. In addition, an eye-tracking system monitors the vergence of the user's eyes and automatically and continuously adjusts the optical powers of the pair of lens elements based on the determined vergence of those eyes.
Owner:MAGIC LEAP INC
Variable focus stereoscopic display system and method
Owner:HONEYWELL INT INC
Predictive eye tracking systems and methods for foveated rendering for electronic displays
ActiveUS20210173474A1Input/output for user-computer interactionImage data processingDisplay deviceEye tracking system
Various aspects of the subject technology relate to prediction of eye movements of a user of a head-mountable display device. Predictive foveated display systems and methods, using the predicted eye movements are also disclosed. Predictive variable focus display systems and methods using the predicted eye movements are also disclosed. Predicting eye movements may include predicting a future gaze location and / or predicting a future vergence plane for the user's eyes, based on the current motion of one or both of the user's eyes. The predicted gaze location may be used to pre-render a foveated display image frame with a high-resolution region at the predicted gaze location. The predicted vergence plane may be used to modify an image plane of a display assembly to mitigate or avoid a vergence / accommodation conflict for the user.
Owner:META PLATFORMS TECH LLC
Display systems and methods for clipping content to increase viewing comfort
ActiveUS20190311527A1Steroscopic systemsInput/output processes for data processingVergenceVirtual reality
Augmented and virtual reality display systems increase viewer comfort by reducing viewer exposure to virtual content that causes undesirable accommodation-vergence mismatches (AVM). The display systems limit displaying content that exceeds an accommodation-vergence mismatch threshold, which may define a volume around the viewer. The volume may be subdivided into two or more zones, including an innermost loss-of-fusion zone (LoF) in which no content is displayed, and one or more outer AVM zones in which the displaying of content may be stopped, or clipped, under certain conditions. For example, content may be clipped if the viewer is verging within an AVM zone and if the content is displayed within the AVM zone for more than a threshold duration. A further possible condition for clipping content is that the user is verging on that content. In addition, the boundaries of the AVM zone and / or the acceptable amount of time that the content is displayed may vary depending upon the type of content being displayed, e.g., whether the content is user-locked content or in-world content.
Owner:MAGIC LEAP
Optical display system, display control device and augmented reality device
The invention provides an optical display system, a display control device and an augmented reality device. The optical display system comprises at least two sets of imaging assemblies; each set of image assembly comprises a display source, a first semi-transmitting semi-reflecting lens and a second semi-transmitting semi-reflecting lens, wherein the display source is used for emitting imaging light according to the image of a visual angle corresponding to a monocular unit, the first semi-transmitting semi-reflecting lens is used for reflecting the imaging light emitted by the display source and transmitting ambient light into human eyes, and the second semi-transmitting semi-reflecting lens is used for reflecting the imaging light reflected by the first semi-transmitting semi-reflecting lens into the human eyes so as to display an image at a corresponding depth of field, and is used for transmitting ambient light to the first semi-transmitting semi-reflecting lens. According to the optical display system, the display control device and the augmented reality device of the invention, the at least two sets of imaging assemblies are adopted; the brightness of the imaging light emittedby the display source is adjusted, so that the depth of field of an imaging surface obtained by means of fitting on the basis of the brightness is corresponding to the depth of field of a stereoscopic image displayed by a binocular unit, and therefore, vergence-accommodation conflict is avoided, a user will not feel fatigue and discomfort, and the definition of the image is improved.
Owner:BOE TECH GRP CO LTD +1
Predictive eye tracking systems and methods for variable focus electronic displays
ActiveUS10871825B1Input/output for user-computer interactionImage data processingDisplay deviceEye tracking system
Various aspects of the subject technology relate to prediction of eye movements of a user of a head-mountable display device. Predictive foveated display systems and methods, using the predicted eye movements are also disclosed. Predictive variable focus display systems and methods using the predicted eye movements are also disclosed. Predicting eye movements may include predicting a future gaze location and / or predicting a future vergence plane for the user's eyes, based on the current motion of one or both of the user's eyes. The predicted gaze location may be used to pre-render a foveated display image frame with a high-resolution region at the predicted gaze location. The predicted vergence plane may be used to modify an image plane of a display assembly to mitigate or avoid a vergence / accommodation conflict for the user.
Owner:META PLATFORMS TECH LLC
Optical arrangement for varying an imaging ratio or of a refractive power
InactiveUS20120007888A1Improve optical qualityEasy to adjustCharacter and pattern recognitionCathode-ray tube indicatorsOptical axisVergence
Introduced is an optical arrangement for varying an imaging ratio and / or a refractive power including at least one optical axis, having at least two optical elements, which can be pivoted into and / or pivoted to and / or switched into and / or switched to the optical path, which encompass in each case a refractive power and an optical axis and the optical axes of which can in each case be made to be substantially congruent with the optical axis of the arrangement or are substantially congruent with the optical axis of the arrangement. The optical path between the optical elements, which can be pivoted into and / or pivoted to and / or switched into and / or switched to, undergoes at least one change in direction and / or vergence.
Owner:FUTURE OPTICS GBR
Focusing structure of reflector and lamp using same
The invention is applied to the field of focusing structures, and discloses a focusing structure of a reflector, which comprises a guide component fixedly connected to a reflector fixing plate, an eccentric wheel component and a knob component capable of driving the eccentric wheel component to rotate. The guide component comprises a guide sleeve, a guide rod glidingly arranged in the guide sleeve, a connecting rod fixedly connected to the guide rod and an elastic component arranged in the guide sleeve; the eccentric wheel component comprises an eccentric wheel capable of driving the connecting rod to move up and down and a rotary shaft of which one end is fixedly connected to the eccentric wheel; the reflector fixing plate is fixedly connected to the guide rod; and the knob component is fixedly connected with the rotary shaft. The invention also discloses a lamp, wherein the reflector with the focusing structure is fixedly arranged in the lamp. The focusing structure of the reflectorand the lamp using the focusing structure provided by the invention have the advantages of simple structure and strong practicability, and can conveniently adjust the focus and change vergence of light.
Owner:OCEANS KING LIGHTING SCI&TECH CO LTD +1
Ocular parameter-based head impact measurement using a face shield
ActiveUS20200305708A1Effectively mitigate concussionAlleviate concussionInput/output for user-computer interactionEye diagnosticsNystagmus presentVisual perception
A system and / or method for measuring a human ocular parameter comprises a human-wearable face shield which has an eye sensor, a head orientation sensor, and an electronic circuit, and a face shield. The eye sensor comprises a video camera that measures horizontal eye movement, vertical eye movement, pupillometry, and / or eyelid movement. The head orientation sensor measures pitch and / or yaw of the wearer's face. The electronic circuit is response to the eye sensor and the head orientation sensor and measures an ocular parameter such as vestibulo-ocular reflex, ocular saccades, pupillometry, pursuit tracking during visual pursuit, vergence, eye closure, focused position of the eyes, dynamic visual acuity, kinetic visual acuity, virtual retinal stability, retinal image stability, foveal fixation stability, or nystagmus.
Owner:NOVUTZ LLC
Ocular-performance-based head impact measurement applied to rotationally-centered impact mitigation systems and methods
Owner:NOVUTZ LLC
Electronic visual headset
InactiveUS20200275071A1Avoiding vergence-accommodation conflictAdd sceneNon-optical adjunctsSteroscopic systemsDisplay deviceVision tunnel
An electronic visual headset useful for purposes of augmented reality, virtual reality, vision correction, and / or vision enhancement. A variable-magnification lens creates a virtual image of the visual region of interest on the display. This virtual image has variable object distance or depth. It is adjusted so that the depth of the image matches the depth of the corresponding object in 3D space, thus resolving the vergence / accommodation conflict problem. In addition to corneal eye-tracking, the invention uses phakometry cameras to measure the eyes' lenses. This information is used for prescriptive vision correction. The images may be digitally manipulated for correction of night vision, color blindness, or tunnel vision. They may also be enhanced with infrared vision, zoom, etc. An image of the user's eyes is displayed on the exterior of the headset.
Owner:ZAVOYSKIKH ANTON
Display supporting mechanism
InactiveCN101097787ASmooth rotationInstrument housingIdentification meansDisplay deviceFriction force
The invention provides a display support mechanism for swimmingly rotating the display. The display support mechanism slantwise moves the display along vergence direction according to the base station, and comprises: axis; first bracket, which is rotationably located on the axis, and is fixed on one of back surface of the display and the base station; second bracket, which is rotationably located on the axis, and is fixed on the other of back surface of the display and the base station; friction force production unit, which produces friction force between the first bracket and the second bracket to keep the display on the preconcerted position of the base station; and falling torque elimination unit, which is located between the back surface of the display and the base station, and eliminates force forward along the axis of the display.
Owner:KATOH ELECTRIC MACHINERY
Three-dimensional display system and display method thereof
ActiveCN106814461AAvoid Focus-Focus ContradictionsThree-dimensional appearance and high friendlinessOptical elementsImaging algorithmPhase modulation
The invention provides a three-dimensional display system. The three-dimensional display system comprises a phase modulation board; a display corresponding to the phase modulation board; a plurality of first sub-element regions disposed on the phase modulation board; and second sub-element regions, which are disposed on the display, and are corresponding to the first sub-element regions. Every first sub-element region is formed by n2 first sub-pixels. Every second sub-element region is formed by n2 second sub-pixels, and every second sub-element is corresponding to the corresponding first sub-pixel, and n2 super pixels are formed. The invention provides the three-dimensional display system and a three-dimensional display method, which have advantages of simple structure, good three-dimensional display effect, high friendliness to three-dimensional impression, and ability of expressing actual depth information. Technical problems of conventional systems such as accommodation-vergence conflict, high hardware requirement, and complicated imaging algorithm are solved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Ocular-performance-based head impact measurement using a faceguard
ActiveUS10602927B2Reduce chanceInertial sensorsPsychotechnic devicesNystagmus presentVisual perception
A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of a faceguard.
Owner:NOVUTZ LLC
Head-mounted display and method for designing wide-focus lens used in same
Provided is a head-mounted display that enables viewing of a stereoscopic image without visual fatigue caused by vergence-accommodation conflict. A head-mounted display 1 includes a display device 3 to display images 3a and 3b for the left eye and the right eye on a screen 3c, virtual image forming optical systems 4a and 4b for the left eye and the right eye, respectively disposed with respect toimages for the left eye and the right eye on the screen, and wide-focus lenses 5a and 5b for the left eye and the right eye having a negative focal length with a range, and respectively disposed withrespect to the virtual image forming optical systems for the left eye and the right eye so as to overlap optical axis directions of the virtual image forming optical systems for the left eye and the right eye. By respectively displaying virtual images of images for the left eye and the right eye formed by the virtual image forming optical systems for the left eye and the right eye in a range witha width extending at a near side by the wide-focus lenses for the left eye and the right eye, a permissible range of vergence and accommodation is expanded to the near side, and in the expanded regionat the near side, a stereoscopic image can be viewed without visual fatigue caused by vergence-accommodation conflict.
Owner:NAT UNIV CORP TOKYO UNIV OF AGRI & TECH +1
Automated variable-focus lens control to reduce user discomfort in a head-mounted display
Systems and methods for controlling variable-focus functionality to reduce user discomfort in a mixed-reality system implement acts of obtaining a vergence depth of a gaze of a user, determining that the variable-focus lens for providing focus on virtual content viewed by the user is currently configured to provide focus at a depth that differs from the vergence depth, detecting that a triggering condition is present, and, in response to so detecting, selectively dampening an adjustment made to the variable-focus lens. In some implementations, the dampening causes the adjustment made to the variable-focus lens to reconfigure the variable-focus lens to provide focus at a depth that differs from the vergence depth.
Owner:MICROSOFT TECH LICENSING LLC
Method and apparatus for controlling focal vergence of optical content
A first optic receives optical environment content for delivery to the see-through display. The see-through display delivers output optical content to the second optic and delivers the optical environment content to the second optic. The second optic delivers the optical output content and optical environment content to a viewing position. The first optic alters the focal vergence of the optical environment content; the second optic alters the focal vergence of the optical environment content and the focal vergence of the optical output content. The focal vergences of the optical output content and optical environment content thus are independently controllable. The first and second optics may render the focal vergence of the optical environment content after first and second optics substantially equal to optical environment content unmodified by either the first or second optics. The focal vergences of optical environment content and output content may be equal after alteration.
Owner:WEST TEXAS TECH PARTNERS LLC
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