53 results about "Adaptation (eye)" patented technology

The invention relates to a brightness control method and system for a vehicle-mounted head-up display and the display. A dynamic adaptation model based on ambient light intensity is constructed by combining human eye visual adaptation characteristics and HUD field angle characteristics, visual adaptation behaviors of human eyes under different illumination conditions can be simulated, and the brightness of the HUD is automatically adjusted according to different light intensity changes, so that information display better conforms to the visual comfort of the human eyes. According to the invention, the maximum HUD display brightness acceptable by human eyes under different illumination conditions can be calculated, the brightness adjustment values under different illumination conditions are dynamically calculated by using the De Boer coefficient, and the brightness of the HUD display is adjusted in real time according to the external light environment, so that the brightness adaptive dynamic closed-loop adjustment is realized, the HUD is effectively prevented from being too bright under low ambient light, and the HUD display quality is improved. The visual blinding phenomenon caused by instantaneous strong light reflection or bright element emerging in a dark scene is avoided, the function safety level of the vehicle-mounted HUD system is remarkably improved, and the ISO 26262ASIL-B level safety requirement is met.

The invention relates to the field of intelligent table lamps, and discloses an LED personalized eye protection lighting method based on AI learning, and the method comprises the steps: fusing the myopia degree manually input by a user, real-time ambient light intensity and desktop reflection characteristics, and generating an eye load adaptation matrix; performing cross-domain convolution recursion modeling on the eye load adaptation matrix, and constructing a user personalized visual tolerance tensor; based on the visual tolerance tensor, utilizing an adaptive threshold drift model to extract an illumination comfort trajectory, and identifying potential visual fatigue risk candidate points; mapping the potential asthenopia risk candidate points to an LED dimmable unit cluster, and performing iterative coupling optimization on brightness gradient, color temperature offset and an illumination incident angle to obtain light field adjustment solutions facing different myopia degrees; generating a non-uniform distributed control instruction among the brightness, the color temperature and the refresh frequency based on the light field adjustment solution; the method has the advantage of intelligently adjusting the light brightness and the color temperature by combining the myopia degree of the user and the ambient brightness.

The invention relates to the technical field of intelligent glasses, and discloses an intelligent glasses zooming method for preventing and treating eye fatigue and a related device. The method comprises the following steps: acquiring multi-modal data of a user in real time; extracting visual features of the eye image, extracting time sequence features of the eye movement data and the environment data, and fusing the visual features and the time sequence features to form a user behavior feature vector; performing automatic clustering on the user behavior feature vectors, and identifying a user behavior mode; on the basis of the current user mode obtained through automatic clustering, the visual features and the time sequence features are combined and input to a pre-trained classification model, and accurate visual fatigue classification of the current user state is carried out; and determining and dynamically adjusting the curvature of the liquid crystal zoom layer of the lens in real time according to the asthenopia classification result and the current user use mode. The visual fatigue state of the user is accurately monitored in real time, and the focal length is accurately regulated and controlled according to the visual fatigue state, so that active adaptation and accurate intervention of myopia prevention and control are realized.

The invention relates to the technical field of train operation safety monitoring, and discloses a train obstacle detection method and system based on a four-eye sensor. The method comprises the following steps: constructing a three-dimensional sensing space fusing geometry, texture and temperature information by synchronously acquiring binocular visible light and binocular far infrared three-dimensional image data and carrying out cross validation and spatial association of heterogeneous visual information. And further combining orbit coordinate system constraints, dynamically generating and cutting a sensing space slice accurately corresponding to the rail-mounted area, and inputting the sensing space slice into the network to complete obstacle identification and positioning. And finally, calculating the threat degree based on the context, and generating an obstacle list. According to the method, multi-source heterogeneous information is fused, dynamic adaptation of a sensing space and a running orbit is realized, the robustness, the accuracy and the real-time performance of obstacle detection in a complex environment are improved, and false alarms and missing alarms are reduced.

The utility model discloses a rapid mesopic vision dark adaptation function inspection device, which mainly comprises an eyeshade, a mesopic vision field component, a dark sighting mark component, a front cover and a head-mounted device, and is characterized in that representative parameters such as the maximum brightness of 17 cd / m < 2 >, the wavelength of 540-550 nm and the like are scientifically set during inspection; according to the method, the dark adaptation time after mesopic vision field stimulation can be accurately obtained, so that effective evaluation on the mesopic vision dark adaptation function is realized.

The utility model relates to the field of detection devices, in particular to a liquid immersion type pressure pipeline air tightness detection device, which comprises a liquid immersion box, a corrugated main pipe, a lifting frame and an air tightness immersion mounting pipe, through a separation area formed by the wave impingement plate and the blocking lines, in combination with a built-in infrared sensor, bubble dynamic states are monitored in real time, subjective errors of naked eye observation are eliminated, tiny leakage is effectively recognized, the lifting frame is driven by the air cylinder to ascend and descend, the water pressure in the liquid immersion box can be accurately adjusted, and pressure impacts of different working conditions on a pipeline can be simulated. Meanwhile, the wave impingement plate and the stabilizing plate cooperate to reduce water flow fluctuation interference, the airtight soaking mounting pipe is subjected to steering adjustment and air bag floating ball self-adaptive positioning, rapid adaptation of different pipe diameters and mounting angles is supported, the operation complexity is reduced, an airtight sleeve and a branch sleeve form a multi-layer sealing structure, and the service life is prolonged. The pressurizing box is combined to control the air pump to dynamically compensate air pressure, misjudgment or equipment damage caused by sudden pressure change in the detection process is prevented, and the overall detection effect is improved.

This invention relates to the field of intelligent control technology and discloses a method and system for adaptive brightness adjustment of a display screen. The method includes: acquiring ambient light intensity data and analyzing its changing trends to determine the directional characteristics of light intensity as the basis for adaptive speed adjustment; inputting the adaptive speed adjustment basis into a visual adaptation model to generate smooth curve parameters adapted to human eye characteristics, generating a brightness transition sequence through discretization sampling, and converting the brightness transition sequence into an adjustment instruction set; obtaining a target reference value from the adjustment instruction set, calculating the deviation between the actual brightness and the target reference value through a feedback mechanism to obtain a corrected brightness value; fusing real-time light intensity and historical data to construct a time series set and predicting the expected light sequence to generate a primary and backup adjustment path, adaptively switching based on the light intensity deviation; extracting the current adjustment instruction and transmitting it to the display driver module to achieve gradual brightness adjustment and a visually comfortable state. This method can achieve precise adaptation between human eye characteristics and display device hardware.

A system and method for adjusting brightness level within a vehicle includes supplying, to a processing system, destination brightness data, exterior brightness data, and interior brightness data. At least the destination data, the exterior brightness data, and the interior brightness data are processed in the processing system to: compute an estimated time of arrival (ETA) for the vehicle to arrive at a predetermined mission destination location, compare the computed ETA to a maximum sight adaptation time, and based on the comparison of the computed ETA and the maximum sight adaptation time, selectively implement a first brightness level adjustment process for adjusting the interior brightness level within the vehicle or a second brightness level adjustment process for adjusting the interior brightness level within the vehicle.

This invention belongs to the field of machine vision inspection, specifically relating to a deep learning-based visual defect detection system for injection-molded shells of high-end equipment. The system includes: a biomimetic compound-eye programmable optical imaging subsystem for generating a reverse compensation light field based on surface morphology to achieve feature enhancement and noise stripping; a production process perception module for monitoring environmental parameters and extracting state feature vectors; a cloud-based adaptive learning center for constructing a meta-learning model and generating specific adaptation parameters; and an edge-side multi-task inference terminal for receiving dynamic knowledge distillation results and performing defect localization and pixel-level segmentation. This invention, through physical imaging and algorithmic collaboration and a cloud-edge architecture, suppresses optical overflow and solves the model adaptation problem under production fluctuations, improving processing efficiency while maintaining accuracy, and achieving closed-loop optimization and continuous evolution of the system.

The name of the invention is a compound containing a heteroaromatic ring and a keto moiety and application thereof. The invention provides a compound shown in a formula (I-1) or (I-2) in the specification, and the compound is initially a faint yellow substance, can be converted into a colorless compound in a water environment after being illuminated, and can be used for preparing a color-changeable polymer material and / or an intraocular lens material. Further, the invention provides a color-changeable polymer material and an intraocular lens. On the premise that safety and effectiveness are guaranteed, the intraocular lens is light yellow before being implanted into an eye and can be slowly changed into a colorless and transparent material within a period of time after being implanted into the eye, adaptation of a patient to transmitted light is facilitated, and meanwhile the better visual ability of the patient after an operation can be achieved.

The invention discloses a critical focal length active intervention-based myopia correction intelligent glasses system and a training method, and relates to the technical field of vision correction. The system adopts an ultrathin aspherical lens (refractive index 1.74) design, focuses 12-45-year-old 0-600-degree myopic users, and realizes personalized intervention through a degree segmentation training model; the core method comprises the following steps: detecting a real degree D0 for multiple rounds, calculating a critical compensation degree D2 constrained by hardware in combination with a visual object distance L, taking the D2 as a unique reference for visual training and close-range active intervention, dynamically adjusting the training intensity, and carrying out progressive intervention on close-range eye use. According to the method, the scientific theory, the ultrathin lens design and the degree segmentation adaptation are deeply combined for the first time, the core innovation lies in a closed-loop system of critical focal length unified calculation and training and intervention sharing the same reference, the pain points that in the prior art, the theory cannot fall to the ground and the height number wearing experience is poor are solved, creativity and falling performance are achieved, and the method is suitable for large-scale popularization and application. The glasses can achieve degree control and vision recovery, meet daily wearing requirements, and have remarkable practical value and innovation value.

The present invention relates to a method for determining at least one optical parameter of a person's eye, the method comprising: - displaying at least two clear images on the retina of the person's eye, the at least two images including a target and being carried by two light beams substantially focused at at least two different positions in a plane of the pupil of the eye; - adapting a parameter of the target in the image based on the person's feedback related to a change in the parameter of the target in each image; and - determining the at least one optical parameter of the person's eye based on the adaptation of the parameter of the target in each image.

The application discloses a vision protection panel lamp, a panel lamp set and a lighting method thereof. The panel lamp comprises a frame, a diffusion plate and a bottom plate. The diffusion plate is clamped in the frame, and the frame is buckled with the bottom plate. Meanwhile, an LED light source plate, an LED driving device and a female terminal wire are arranged between the diffusion plate and the bottom plate. The female terminal wire is connected with the positive and negative poles of the LED light source plate, and the female terminal wire is connected with the LED driving device. The full-color bionic light source is adopted as the lighting source. By adjusting the cooperation of the lighting color temperature value change and the brightness change, the switching from high brightness to low brightness or the switching from low brightness to high brightness is completed in a specific time during the color temperature gradual change process. The static light is changed into dynamic light, and the visual self-adaptation can be avoided. The bionic change brightness makes people unconsciously blink, and the eye axis is actively adjusted. The technical effects of protecting eyes, reducing eye fatigue, reducing or preventing myopia can be achieved.

The invention relates to the technical field of communication interaction, in particular to a method, a system and a terminal for realizing screen interaction in a video call process. The method comprises the following steps: arranging a near-infrared LED point light source at the edge of a display, collecting an eye image of a user through a camera, obtaining four reflection light spot images formed on the front surface of a cornea, and extracting the pixel coordinate position of each reflection light spot; in a system initialization stage, four light spot reference positions when a user directly views the center of a screen are recorded, and a bidirectional mapping relation between the light spot displacement and the horizontal rotation angle and the vertical rotation angle of an eyeball is established; in the real-time interaction process, the displacement of each light spot of the current frame relative to the previous frame is calculated, and the corresponding eyeball rotation angle is extracted based on the bidirectional mapping relation. Through three-dimensional space modeling and corneal curvature correction, adaptation to eyeball characteristics of different individuals is achieved, and the universality of the system is improved.

The invention discloses a hyperopia method and system based on multi-modal scene perception, electronic equipment and a medium, and relates to the technical field of data processing. The method comprises the following steps: acquiring environment illumination data, eye movement data and screen interaction data when a user uses learning equipment; recognizing a learning scene of the user based on the screen interaction data, and calculating a corresponding visual load quantized value based on the recognized learning scene and the eye movement data; according to the visual load quantized value and the continuous eye using duration of the user, predicting a visual fatigue index of the user in a preset time window; performing comparative analysis on the environment illumination data and the screen brightness of the learning equipment, calculating an illumination adaptation coefficient, and correcting the asthenopia index based on the illumination adaptation coefficient; and when the corrected asthenopia index exceeds a fatigue index threshold value, executing a preset far focus training operation on the user. By implementing the technical scheme provided by the invention, the user can be reminded in time, and the efficiency of assisting the user in preventing asthenopia is improved.

The invention relates to the technical field of VR visual health intervention, discloses a VR visual health intervention system and method based on dynamic visual field adaptation, and solves the problem that photostimulation of a retina target area is difficult to be continuous, accurate and free of interference when eyeballs move in a VR scene. The system comprises a VR display device, an eye movement tracking module, a dynamic view division and rendering module and a light stimulation control module. The eye movement tracking module outputs normalized fixation point coordinates in real time, the dynamic view dividing and rendering module receives and converts the normalized fixation point coordinates into real-time fixation point pixel coordinates, and each frame divides a center view, a peripheral view and a transition view with the coordinates as a reference. The photostimulation control module configures stimulation light (460-500nm blue light, 620-750nm red light and the like) based on a known photobiological effect and displays the stimulation light in a peripheral visual field. The method realizes continuous and accurate coverage of the target area through light stimulation, does not interfere with VR core experience, is flexible in parameter configuration, and is suitable for scenes such as circadian rhythm adjustment and retina health maintenance.

The utility model discloses a gradient microstructure optical lens adapted to a simulated outdoor environment, which comprises a substrate and a microstructure layer, the microstructure layer comprises a lower high-density area, a middle transition area and an upper low-density area, the microstructure layer is provided with a plurality of uniformly distributed microstructures, and the microstructures are arranged on the substrate. The density of the microstructures is gradually reduced from the lower part to the upper part along the vertical direction of the lens, and the gradient change range of the density of the microstructures is that 2-5 microstructures are reduced per millimeter. According to the gradient microstructure optical lens adaptive to the simulated outdoor environment, targeted anti-dazzle is achieved, and the dense microstructures on the lower portion effectively restrain ground reflection light which accounts for more than 60% of an outdoor dazzle source; visual field definition optimization: the upper sparse arrangement reduces interference to a long-distance visual field; and ergonomic adaptation: the visual behavior characteristic that the downward watching proportion of human eyes is 70% during outdoor activities is met.

To enable foveal projection in a near-eye light field projection system. The near-eye light field projection system includes a light source (10) that generates an incident light beam (100) and a spatial light modulator (20) that projects a plurality of modulated light beams (110). A first optical element (70) forms a plurality of light source images (28) at a light source image plane (30). A second optical element (32) forms a modulator image (114) at a modulator image plane (115). A third optical element (40) provides a first field of view (FOV) (80) and projects a plurality of projection viewpoints (112) onto an exit plane (125). An active deflection element (60) deflects the modulated light beam (110) based on the orientation of the pupil of a user's eye to provide a plurality of deflected and modulated light beams (110a, 110b). The modulator image (114) is spatially shifted in the modulator image plane (115) to form a second FOV (81a, 81b) larger than the first FOV (80) in the direction of the pupil orientation, and the projection viewpoint (112) forms second exit pupils (121a, 121b) in the exit plane (125).

The application relates to the technical field of contrast auxiliary devices, and discloses an eye fundus imaging device positioning auxiliary device which comprises a supporting base, a guide rod is fixedly installed at the top of the supporting base, a rotating shaft three is driven to rotate through a rotating knob, the rotating shaft three drives an umbrella-shaped tooth two to mesh with a conical tooth two to rotate, the rotating shaft two, the conical tooth one and the umbrella-shaped tooth one are matched with synchronous transmission, power is transmitted to a rotating shaft one, a convex connecting pin is lapped through electromagnetic coil magnetization iron core adsorption, then the double worm gears synchronously mesh with the worm wheel to drive the transmission screw rod, so that the different patient height adaptation requirements are realized, secondly, the rotating knob is matched with another group of electromagnetic coil magnetization iron core adsorption convex connecting pin lapping, the fixed shaft and the gear are driven to rotate, the gear meshes with the rack to drive the inclined block two to slide, the arc-shaped supporting plate is pushed to adjust the posture, then the eye fundus imaging eye position is matched, so that the cumbersome process of multiple operation piece switching is avoided, and the demand of multiple eye position examination is met.

The embodiment of the utility model discloses a switchable eyepiece assembly and an observation instrument, relates to the technical field of cameras, and is convenient for the observation instrument to be connected with a target component. The eyepiece assembly comprises a shell and a first eyepiece. The shell is provided with a cavity with two through ends, the shell is provided with a first connecting structure used for being connected with a machine body of the observation instrument at the first end of the shell, and the shell is further provided with a second connecting structure used for being connected with a target component at the second end of the shell; the first eyepiece is arranged in the cavity of the shell. The eyepiece assembly can be installed on a machine body of the observation instrument, and the shell can conveniently connect a target component with the eyepiece assembly, so that the connection convenience and the adaptation capability of the observation instrument to the target component are improved. The method is suitable for the scene of improving the connection adaptation capability of the observation instrument.

The utility model discloses a point diffusion out-of-focus multi-effect lens, and relates to the technical field of vision prevention and control lenses. The point diffusion out-of-focus multi-effect lens is provided with the central optical area, the out-of-focus area and the light diffusion area, the out-of-focus area is located on the periphery of the central optical area, the light diffusion area comprises the diffusion point array to change light scattering so as to adjust the contrast ratio, the point diffusion area is matched with the out-of-focus area, and the vision delay effect is better; meanwhile, a plurality of out-of-focus rings are arranged to construct a plurality of out-of-focus areas, a microstructure array of the out-of-focus areas is arranged in a radial array mode, a structure with dense middle out-of-focus structures and sparse out-of-focus structures is formed, the physiological structure of human eyes is met, vision impediment is reduced, and the astigmatism problem of a wearer is solved; moreover, the out-of-focus zones in the adjacent out-of-focus annular zones are staggered in the circumferential direction, and the intervals between the out-of-focus zones in the adjacent out-of-focus annular zones are also staggered in the circumferential direction, so that the anisotropy of the out-of-focus zones is increased, the adaptation of a visual receptor is reduced, and the tolerance phenomenon is delayed.

A multilayer optical sheet has multiple polygonal grid cells 20 and includes a substrate 10, a multilayer film 30 and two anti-fouling and water-repellent layers 40. The multiple polygonal grid cells and multilayer film are formed through vacuum coating on one surface of the substrate and by alternately stacking multiple high refractive index materials and multiple low refractive index materials. The multiple polygonal grid cells resist glare and block scattered light and also provide a light supplementing effect to shorten light and dark adaptation periods for eyes. The multilayer film is formed on a surface of the substrate opposite to that of the multiple polygonal grid cells and blocks ultraviolet, violet and blue light of 280-500nm and near infrared light in the waveband of 760-2000nm. The two anti-fouling and water-repellent layers are formed through vacuum coating by attaching a water-repellent agent to the outside of the multiple polygonal grid cells and the multilayer film. The multiple polygonal grid cells are therefore enclosed by one of the anti-fouling and water-repellent layers. The substrate and multilayer film is then sandwiched between another one of the anti-fouling and water repellent layers and the substrate. [Figure 1]

Examples are disclosed that relate to a mixed-reality device having improved dark adaptation to see in dark ambient lighting conditions. In one example, a mixed-reality device includes an eye tracker, a near-eye display, a logic subsystem, and a storage subsystem. The eye tracker is configured to determine a position of an eye. The storage subsystem holds instructions executable by the logic subsystem to generate an image frame including a plurality of pixels, wherein each pixel has a native luminance level, map the position of the eye to the image frame, adjust luminance levels of pixels of the image frame as a function of angle relative to the position of the eye mapped to the image frame and based at least on a rod and cone anatomy of the eye to generate a luminance-adjusted image frame, and render, via the near-eye display, the luminance-adjusted image frame.

Methods, systems, and devices are provided for measuring dark adaptation of one or both eyes of a patient, and more particularly, for measuring dark adaptation with a mobile device application. An exemplary method includes exposing an eye of a patient to a light source to bleach a retinal location of the eye, displaying on a mobile device a figure with a luminance and waiting until the patient communicates with the mobile device to acknowledge that the patient can see the figure, measuring and recording a level of the luminance and a time period between first displaying the figure and the patient communicating with the mobile device, continuing to display additional figures with decreasing luminance one at a time, and determining by a processor dark adaptation measurements of the patent based on the measured and recorded luminance and time periods.

The present invention relates to the field of tunnel lighting technology, and in particular to a tunnel entrance lighting control method and control system, comprising: S1, obtaining a first image in a short exposure time mode; obtaining a second image in a long exposure mode; S2, synthesizing the second image and the first image into a high dynamic range image, dividing the image into a low brightness area, a transition area, and a high brightness area; S3, generating a brightness transition curve for the transition area; S4, determining a brightness adjustment curve for the transition area based on the maximum brightness of the tunnel entrance and the rate of change of the pupil area for light and dark adaptation; S5, determining the target brightness of each part of the transition area based on the brightness transition curve and the brightness adjustment curve; S6, adjusting the brightness of the lighting fixtures in the transition area so that the brightness of each part of the transition area reaches the target brightness. The present invention determines the target brightness based on the brightness transition curve combined with the brightness adjustment curve, fully considering the impact of the rate of change of the pupil area for light and dark adaptation on the line of sight, so that the change in brightness at the tunnel entrance is more adapted to the function of the human eye.

The application discloses a rapid mesopic dark adaptation function examination method, and an examination device mainly comprises an eyeshade, a mesopic visual field assembly, a dark visual mark assembly, a front cover and a headgear. 2 The representative parameters, such as maximum brightness 17 cd / m2, wavelength 540-550 nm and the like, are scientifically set during examination, the dark adaptation time after mesopic visual field stimulation can be accurately obtained, and thus the effective evaluation on the mesopic dark adaptation function is realized.

The invention relates to the technical field of eyesight recovery protection devices for ophthalmology patients, particularly discloses an eyesight recovery protection device for ophthalmology patients, and aims to solve the problems that a traditional medical eye pad is inconvenient to use during examination, and light cannot be finely and gradually adjusted to adapt to postoperative photosensitivity. The device is characterized by comprising an eye protector body, a channel unit, a light adjusting unit and a control unit. Wherein the channel unit provides removal-free convenient operation; the light adjusting unit comprises an electrochromic film, and dynamic light transmittance adjustment is achieved; the control unit supports automatic, manual and progressive adaptation modes. By the adoption of the technical scheme, convenient and sanitary eye local operation can be achieved, fine progressive light management is provided, light sensitivity is effectively relieved, eye light adaptability recovery is promoted, and postoperative rehabilitation comfort, safety and efficiency are improved.

A method of operation of a display device for controlling brightness adaptation comprises (a) receiving a position signal that varies in dependence on a position of a fovea of an eye; (b) receiving a brightness signal that varies in dependence on brightness external to the display device; and (c) projecting a color image into the eye over a range of angles that varies in dependence on the position signal and on the brightness signal, such that when the brightness is below a predetermined threshold the color image is confined to the retinal target area.

The invention discloses a multi-modal sensing Al self-adaptive brightness adjustment low-blue-light head-up display optical system, which is characterized in that a multi-modal data acquisition layer is arranged to fuse environment, vehicle and driver state information, and precise scene recognition is realized through a multi-modal data preprocessing layer and a core AI processing layer; the blue light adjustment decision layer generates an adjustment instruction giving consideration to eye protection, visibility and comfort, and finally the HUD brightness and the blue light content are dynamically adjusted and controlled through the multi-mode execution feedback layer. According to the method, effective suppression of harmful blue light and intelligent adaptation of display brightness in different driving scenes are achieved, the retina injury risk and the human eye adjustment burden caused by long-time use of the HUD are remarkably reduced, and the visual comfort and safety in the driving process are improved.