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84 results about "Pupils size" patented technology
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System and method for determining human emotion by analyzing eye properties
InactiveUS20070066916A1Cancel noiseEasy to explainLocal control/monitoringComputer-assisted medical data acquisitionPupilComputer science
The invention relates to a system and method for determining human emotion by analyzing a combination of eye properties of a user including, for example, pupil size, blink properties, eye position (or gaze) properties, or other properties. The system and method may be configured to measure the emotional impact of various stimuli presented to users by analyzing, among other data, the eye properties of the users while perceiving the stimuli. Measured eye properties may be used to distinguish between positive emotional responses (e.g., pleasant or “like”), neutral emotional responses, and negative emotional responses (e.g., unpleasant or “dislike”), as well as to determine the intensity of emotional responses.
Owner:IMOTIONS EMOTION TECH
Enhanced electro-active lens system
A lens system and optical devices that provide enhanced vision correction are disclosed. The lens system includes an electro-active layer that provides correction of at least one higher order aberration. The higher order correction changes dynamically based on a user of the lens system's needs, such as a change by the user's gaze distance, pupil size, or changes in tear film following blinking, among others. Optical devices are also described that use these and other lens systems to provide correction of higher order aberrations. An optical guide is also described that guides the user's line of sight to see through a lens region having a correction for a higher order aberration.
Owner:E VISION LLC
System and method for eye tracking during authentication
ActiveUS20140289834A1Digital data processing detailsMultiple digital computer combinationsEyes pupilsComputer science
A system, apparatus, method, and machine readable medium are described for performing eye tracking during authentication. For example, one embodiment of a method comprises: receiving a request to authenticate a user; presenting one or more screen layouts to the user; capturing a sequence of images which include the user's eyes as the one or more screen layouts are displayed; and (a) performing eye movement detection across the sequence of images to identify a correlation between motion of the user's eyes as the one or more screen layouts are presented and an expected motion of the user's eyes as the one or more screen layouts are presented and / or (b) measuring the eye's pupil size to identify a correlation between the effective light intensity of the screen and its effect on the user's eye pupil size.
Owner:NOK NOK LABS
See-through display brightness control
ActiveCN103091843ABrightness adjustableNon-optical adjunctsCathode-ray tube indicatorsComputer graphics (images)Display device
The technology provides various embodiments for controlling brightness of a see-through, near-eye mixed display device based on light intensity of what the user is gazing at. The opacity of the display can be altered, such that external light is reduced if the wearer is looking at a bright object. The wearer's pupil size may be determined and used to adjust the brightness used to display images, as well as the opacity of the display. A suitable balance between opacity and brightness used to display images may be determined that allows real and virtual objects to be seen clearly, while not causing damage or discomfort to the wearer's eyes.
Owner:MICROSOFT TECH LICENSING LLC
System for the physiological evaluation of brain function
ActiveUS20140171756A1Quickly and accurately and non-invasively identifyHealth-index calculationMedical automated diagnosisDiseaseDisplay device
The OculoKinetic Device is used to test an individual to evaluate brain function including, but not limited to, identifying the presence of a traumatic brain injury or central nervous system disease which manifests itself through abnormal ocular responses to stimuli by using the high-speed tracking of an individual's eye movements (monocular or binocular, and either conjugate or disconjugate in horizontal, vertical, or torsional directions or combinations thereof), pupil size and reactivity, eyelid position, and blink parameters, and optionally along with other ocular elements, i.e., eyeball pressure, temperature, blood flow, etc. The eye movement stimulus protocol uses a target that moves in any direction of a two- or three-dimensional plane and may use a color display or geometric shapes. In addition, the stimuli can be used in conjunction with cognitive testing, balance assessment, and other non-eye tests.
Owner:TBI DIAGNOSTICS
Accommodation compensation systems and methods
ActiveUS20080291395A1Improve treatment of patientReduced accommodationLaser surgeryEye diagnosticsAberrations of the eyePupil
Methods and systems for obtaining an ocular aberration measurement of an eye of a patient are provided. Exemplary techniques involve obtaining a first induced metric for the eye that corresponds to a first accommodation state of the eye, obtaining a second induced metric for the eye that corresponds to a second accommodation state of the eye, and determining a natural metric of the eye based on the first and second induced metrics. An induced metric may include a pupil size or a spherical aberration. Techniques can also include determining a target metric for the eye base on the natural metric, determining whether an actual metric of the eye meets the target metric, obtaining an ocular aberration measurement of the eye if the actual metric meets the target metric, and determining a treatment for the eye based on the ocular aberration measurement.
Owner:AMO DEVMENT
Head mounted display using spatial light modulator to move the viewing zone
InactiveUS20170255012A1Shock resistanceInput/output for user-computer interactionGraph readingSpatial light modulatorDisplay device
A wearable device includes a light source and a display unit. The display unit includes an image engine that controls the light source to generate image content for display, and a plurality of optical elements that direct the image content into a viewing zone. An eye monitor measures information pertaining to an eye configuration of a user wearing the wearable device, and the image content is visible to the user when the eye is aligned with respect to the viewing zone. A spatial light modulator (SLM) moves a position of the viewing zone based on the eye configuration information measured by the eye monitor. The eye monitor measures pupil size of the user, and the optical elements direct the image content into the viewing zone that is smaller in at least one dimension than twice the measured pupil size. The light source may include a micro-electro-mechanical systems (MEMS) scanning mirror.
Owner:SHARP KK
Fatigue monitoring method and device for driver
InactiveCN1680779AMeet monitoring requirementsImprove applicabilityImage analysisPicture interpretationDriver/operatorPupil
A method for monitoring fatigue strength of driver includes shining driver eye with infrared ray to obtain multiimage of different retina image at the same time, carrying out difference processing for collected images to obtain pupil images, using kalmen filter to trace pupil in real - time to obtain pupil characteristic parameter, processing the parameter to obtain maximum value of pupil size and real - time coroclisis percentage of pupil, calculating out PERCLOS value f and using BP network sorter to judge fatigue strength of driver based on obtained value f. The monitoring device is also disclosed.
Owner:JIANGSU UNIV
Systems and methods for user authentication using eye movement and pupil size change matching
A system for eye movement and pupil size change matching for user authentication includes an ocular sensor that is configured to sense eyes of a user and collect data indicative of the user's eye movement and pupil size changes. When a user's eyes are detected, the logic analyzes data collected by the ocular sensor in order to determine whether the sensed data match data extracted from a template defined by the eye movement and pupil size changes of an authorized user. If so, the user is authenticated and is permitted to access at least one restricted resource. As an example, the user may be permitted to access an application or sensitive data stored on a computer system or to access a restricted area, such as a room of a building.
Owner:UNIVERSITY OF ALABAMA
Device and method for iris recognition using a plurality of iris images having different iris sizes
ActiveUS20130063582A1Enhancing iris recognition accuracyReduce additional expenseAcquiring/recognising eyesColor television detailsPattern recognitionIris image
The present invention relates to an iris recognition device and method capable of improving iris recognition accuracy. To enhance iris recognition accuracy in consideration of variation in pupil size and iris region due to changes in intensity of lighting, the iris recognition device and method are configured to obtain multiple iris images having different iris sizes by capturing iris images of a person to be enrolled with a camera while adjusting brightness of lighting so that the iris size of the person to be enrolled varies from a maximum size to a minimum size, store the obtained iris images and associated iris size information for enrollment in a database interworking with the iris recognition device, and select enrolled iris images having an iris size most similar to that of an iris image captured by the camera for identification among many enrolled iris images for similarity measurement.
Owner:IRITECH
Eye tracker and pupil characteristic measurement system and associated methods
InactiveUS20060158639A1Equal sizeLaser surgerySurgical instrument detailsEnvironmental effectLight spot
Systems and methods for tracking eye movement includes directing an incident light beam onto each facet of a pyramidal prism to produce a plurality of beams that form a plurality of light spots, at least two of the light spots having different diameters. The prism is translatable to effect a change in spacing of the light spots. Intensities of light reflected from the light spots is used to retain the light spots upon a pupil / iris boundary. A relative intensity of the spots indicates a change in pupil size. A second light spot positioned on a predetermined eye sector can also be used to calculate a pupil characteristic and an environmental effect on light received from the eye.
Owner:ALCON REFRACTIVEHORIZONS
Presbyopia lens with pupil size correction based on level of refractive error
ActiveUS20140268034A1Minimize the differenceBe consistentEye diagnosticsIntraocular lensRefractive errorPupil
Ophthalmic lenses for the treatment of presbyopia may be improved to enhance the visual experience of the patient. By adjusting the optical design of presbyopic lenses to account for changes in pupil size due to the degree of myopia or hyperopia, an enhanced visual experience may be achieved independent of the level of ametropia.
Owner:JOHNSON & JOHNSON VISION CARE INC
Patient immobilization device with diagnostic capabilities
Owner:TOMCANY BRIAN
System for the physiological evaluation of brain function
The OculoKinetic Device is used to test an individual to evaluate brain functions and to identify the presence of a traumatic brain injury or disease which manifests itself through abnormal ocular responses to stimuli by using the high-speed tracking of an individual's eye movements, pupil size and reactivity, eye lid position and blink parameters and optionally along with other ocular elements, i.e., eyeball pressure, temperature, blood flow, etc. The eye movement stimulus protocol uses a target that moves in any direction of the two-dimensional plane and may use a color display or geometric shapes. In addition, the stimuli can be used in conjunction with cognitive testing, balance assessment, and other non-eye tests.
Owner:TBI DIAGNOSTICS
Aspheric optical lenses and associated systems and methods
ActiveUS20120158131A1Improved near visionIncrease depth of focusOptical articlesEye diagnosticsOptical powerPupil
Aspheric optical lenses (e.g., intraocular lenses and contact lenses) are provided. The intraocular lens includes a body portion defining an anterior optical surface and an opposing posterior optical surface. The anterior optical surface includes a central region surrounded by a first outer region and a second outer region. The central region has a first asphericity profile. The first outer region has a second asphericity profile that is different than the first asphericity profile of the central region. The second outer region has a third asphericity profile that is different than the second asphericity profile of the first outer region. The overall asphericity profile of the optical lens provides different depths of focus for different pupil sizes. The result is an optical lens that provides increased depth of focus or pseudo-accommodation while maintaining desired optical power and performance.
Owner:ALCON INC
Terminal processing method and device, and mobile terminal
InactiveCN106295492AMeets requirementsImprove accuracyCharacter and pattern recognitionCathode-ray tube indicatorsEye stateComputer terminal
The embodiment of the invention provides a terminal processing method and device, and a mobile terminal. The method comprises the steps of starting an iris detector to collect eye image information of a user when the mobile terminal is used by the user; determining whether pupil size information is in a first range or not according to the eye image information; and adjusting screen brightness of the mobile terminal to enable the pupil size information to satisfy the first range when the pupil size information is not in the first range. Pupil sizes can represent user eye states, the screen brightness is automatically adjusted through the pupil sizes, and the brightness adjustment accuracy is improved.
Owner:BEIJING ANYUNSHIJI TECH CO LTD
Online wavefront measurement and display
A fast algorithm is presented which allows for substantially simultaneous acquisition, analysis, and display of a wavefront centroid image, referred to as online aberrometry. A method embodiment involves determination of an average, or most frequently occurring, wavefront aberration over a selected time interval, e.g., 20 sec. Online pupil diameter measurement allows analysis of wavefront aberration as a function of changing pupil size. A wavefront measuring apparatus is disclosed that supports online aberrometry.
Owner:BAUSCH & LOMB INC
Head mounted display apparatus and backlight adjustment method thereof
ActiveUS20150187330A1Cathode-ray tube indicatorsInput/output processes for data processingComputer moduleApplication-specific integrated circuit
A head mounted display apparatus and a backlight adjustment method thereof are disclosed. The head mounted display apparatus comprises a display module, a backlight module, an application processor, an eye image capture apparatus, an infrared (IR) light emitting diode (LED) and an application specific integrated circuit (ASIC). The backlight module provides a backlight to the display module. The eye image capture apparatus captures an eye image. The IR LED provides an auxiliary light source to the eye image capture apparatus. The ASIC calculates a current pupil size according to the eye image. The application processor adjusts the backlight intensity of the backlight module according to the current pupil size in an adjustment mode.
Owner:QUANTA COMPUTER INC
Iris pattern recognition and alignment
An improved aberrometer is disclosed having a variable visible illumination fixation target for controlling pupil size for the diagnostic images.
Owner:BARCLAYS BANK PLC AS SUCCESSOR AGENT
Artificial eye for medical simulator
The invention discloses an artificial eye for a medical simulator, wherein drive motors and bracket plates for a winking transmission mechanism and a pupil changing mechanism are fixed on a base. The winking drive motor drives eyelids to wink by a crank rocker transmission mechanism. The pupil drive motor is arranged on the pupil changing mechanism inside an eyeball to achieve pupil change; a pupil size position judging mechanism is connected on the pupil changing mechanism; and a pupil light sensitive mechanism is further connected inside the pupil changing mechanism. The eyeball is connected with the base by the bracket plates. The artificial eye integrates a winking function with a pupil changing function, has a simple and compact structure, and reliable transmission effects; and a control system for controlling the motor to rotate is added on the subsequent part, so as to achieve simulation effects including a function of winking according to different frequencies, and a function of changing the size of the pupil according to interferences of external factors. The artificial eye can be used as an artificial eye for the medical simulator, or an artificial eye for a human-like robot.
Owner:SHANGHAI JIAO TONG UNIV
Light guide device and virtual image display apparatus
ActiveUS20170059868A1Suppress color unevennessReduce color unevennessMechanical apparatusPlanar/plate-like light guidesLight guidePupils size
A light guide device may be incorporated into a virtual image display apparatus, and functionally includes a light-incident part for entrance of picture lights, a light guide part that guides the picture lights via the light-incident part, and a light-exiting part that outputs the picture lights from the light guide part to a position of an eye. In the light guide device, light guide that enables non-diffraction virtual image formation is performed with respect to lateral first directions and a pupil size is enlarged by first and second diffraction optical elements with respect to longitudinal second directions.
Owner:SEIKO EPSON CORP
Method for controlling luminance of terminal screen and terminal
ActiveCN106445151AExtend battery lifeImprove experienceInput/output for user-computer interactionPower supply for data processingPupilRunning time
The embodiment of the invention discloses a method for controlling the luminance of a terminal screen and a terminal. The method includes the steps that after the terminal determines that the luminance value of the screen of the terminal is a first screen luminance value, the information of eyeballs of eyes in a preset range is detected, and the size of pupils of the eyes is determined according to the detected information of the eyeballs of the eyes; then after the terminal determines that the size of the pupils of the eyes is larger than or equal to a pupil size threshold value, the luminance value of the terminal screen is set to be a second screen luminance value. According to the method and the terminal, the terminal obtains the size of the pupils of the eyes by detecting the information of the eyeballs of the eyes, then whether the terminal screen is watched with the eyes or not is determined, and under the condition that the screen is not watched with the eyes, the luminance of the terminal screen is reduced with the method of setting the luminance value of the terminal screen into the second screen luminance value, so that the power consumption of the terminal screen is effectively reduced, and the running time of the terminal is prolonged.
Owner:GREE ELECTRIC APPLIANCES INC
Techniques for adaptive brightness control of a display
Techniques for adaptive brightness control of a display are described. A apparatus may comprise a display and a display control module communicatively coupled to the display. The display control module may be arranged to modify brightness levels for the display based on ambient light level measurements and changes in pupil size of a human eye. Other embodiments are described and claimed.
Owner:QUALCOMM INC
Method of adjusting parameters of virtual-reality device and virtual-reality devices
ActiveCN107491166APhysical health effectsImprove experienceInput/output for user-computer interactionGraph readingElectrical resistance and conductanceHuman body
Owner:SHENZHEN GRANDSUN ELECTRONICS
Retinal reflection generation and detection system and associated methods
A system for generating a beam for retinal reflection detection includes a beam processor positioned to receive an illumination beam having a first spot size from a light source. The beam processor can alter the illumination beam to form a beam having a second spot size. Focusing optics focus this altered beam onto an eye, causing a spot to be formed on the retina. A detector receives reflected radiation from the retina passed through the pupil, and generates data indicative of a spatial extent of the eye pupil and an intensity map of the reflected radiation. A software package can determine from the data a pupil size and an intensity level in the intensity map. A controller in communication with the software signals the beam processor to vary the second spot size to optimize an accuracy of the determined pupil size and the intensity level.
Owner:ALCON REFRACTIVEHORIZONS
System and methods for evaluating images and other subjects
ActiveUS20180314327A1Conducive to integrated developmentInput/output for user-computer interactionCharacter and pattern recognitionFeature dataComputer science
Eye movements and / or physiological characteristics of a user viewing a subject are detected and quantified to produce data to determine one or more details that is or was observable in the scene or image of which the user may or may not be consciously aware. Eye movement data includes the number of times a user looks at each area of a subject (“fixation number”), the length or duration of the fixation (“fixation duration value”), the number of times a user returns to look at a particular area (“fixation repeats”), and additionally any changes to pupil size based on dilation / constriction (“pupil size”). Physiological characteristic data includes heart rate, pulse or skin conductance. Advantageously, the system and methods may be used for a variety of purposes including evaluation improvement and training.
Owner:UNIV OF MASSACHUSETTS
Systems and methods of increasing pupil size in a display system
A display system for presenting visual information to a user includes a fast scan mirror, a slow scan mirror, and anamorphic relay optics positioned optically between the fast scan mirror and slow scan mirror. The fast scan mirror has a fast scan arc in a scan direction of a display light provided by a light source. The slow scan mirror has a slow scan arc in a cross-scan direction of the display light that is perpendicular to the scan direction. The anamorphic relay optics are configured to magnify the display light in the cross-scan direction.
Owner:MICROSOFT TECH LICENSING LLC
Unlocking detection method of touch screen terminal, and touch screen terminal
ActiveCN107577930AReduce information lossReduce property damageCharacter and pattern recognitionDigital data authenticationComputer terminalTouchscreen
The embodiment of the invention relates to the technical field of communication, and discloses an unlocking detection method of a touch screen terminal, and the touch screen terminal. The method comprises the following steps that: detecting an unlocking operation which happens on the touch screen of the touch screen terminal, and collecting user feature information, wherein the user feature information comprises human body feature parameters and vital sign parameters; when the user feature information is matched with authorized feature information, through an eye detection device built in thetouch screen terminal, detecting the eye focus point of a user, and collecting the eye image of the user; judging whether the eye focus point of the user is on the touch screen of the touch screen terminal or not; if the eye focus point of the user is on the touch screen of the touch screen terminal, analyzing the eye image of the user to obtain the pupil size of the user; judging whether the pupil size of the user is adaptive to a preset pupil size range or not; and if the pupil size of the user is adaptive to the preset pupil size range, executing an unlocking operation for the touch screenterminal. When the embodiment of the invention is implemented, illegal unlocking and unlocking under the nonvoluntary state of the user are avoided, the information and property loss of the user can be lowered. Furthermore, the mistaken unlocking operation of the user is avoided so as to improve user experience feeling.
Owner:GUANGDONG XIAOTIANCAI TECH CO LTD
Eye fatigue prompting method and user equipment
InactiveCN106971505AEffective eye strain tipsPrevent diseaseCharacter and pattern recognitionAlarmsUser devicePupil
The invention discloses an eye fatigue prompting method and user equipment. The method comprises steps: a camera arranged in front of a display screen is used for acquiring an eye area image of a user; the pupil size is calculated on the eye area image, and a pupil size value is acquired; the eye closing degree corresponding to the pupil size value is determined; and whether the eye closing degree exceeds a preset threshold is judged, and if yes, eye fatigue early warning prompting is carried out on the user. When the embodiment of the invention is executed, eye fatigue prompting can be effectively carried out on the user, and various diseases caused by eye fatigue can be prevented.
Owner:GUANGDONG XIAOTIANCAI TECH CO LTD
Thermal imager with protective grid
ActiveUS20130161513A1Radiation pyrometryMaterial analysis by optical meansGrid patternClassical mechanics
A protective enclosure for a thermal imager having a window and protective grid. The protective grid is designed in relation to the lens of the thermal imaging device such that the grid pattern geometry and size accommodate the thermal imaging device's pupil size.
Owner:JOHN FLUKE MFG CO INC
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