66 results about "Accommodation" patented technology

The application provides a synergic dynamic lighting method and its adjustable light direct current incandescent lamp, relates to the field of vision and lighting, and aims to ensure that light is uniform and dynamic in the field of vision; the color temperature is strictly imitated candlelight; the core is direct current adjustable light incandescent lamp technology; and the light in the field of vision is mostly non-uniform and static in the present night desktop lighting, and the light quality is never as good as direct current incandescent lamp; this easily leads to eye accommodation laxity and induces axial myopia; the application mainly comprises two direct current incandescent lamp platforms, one of which illuminates a book, and the other of which illuminates a white wall in front of the eyes; the light intensity of each is adjustable to ensure the uniformity of light in the field of vision, so that the fovea and peripheral rod cells of the retina are stimulated at the same time; the two lamps can also realize the synchronous adjustment of illumination according to the program, thereby guiding the dynamic focusing of the eyes and realizing dynamic lighting; the dynamic also reflects the low color temperature mammal lighting imitating candlelight according to the biological clock and the anti-alzheimer's lighting with 40Hz deep frequency flash.

The invention relates to a visual training method, device and equipment based on a dynamic view field, and the method comprises the steps: obtaining detection data and a training time threshold value of a to-be-trained user, and the detection data comprises long-distance data, short-distance data and measurement precision; detecting the to-be-trained user according to the detection data to obtain vision data before training; determining training data according to the vision data; and according to the training data, carrying out distant view field and near view field alternate cycle training on the to-be-trained user until the duration reaches a training duration threshold, and completing visual training on the to-be-trained user. According to the visual training method based on the dynamic view field, vision data detected by a to-be-trained user is obtained to determine training data, and then the to-be-trained user is subjected to far view field and near view field alternate cycle training according to the training data and a training duration threshold value, so that the eyes of the to-be-trained user really move in the training process; therefore, the training effects of eye fusion image and focusing and diverging function adjustment are obviously improved.

The invention relates to the technical field of multi-point defocusing, in particular to an optical stable photochromic multi-point defocusing myopia control lens prescription generation method, which comprises the following steps of: based on eyes of a wearer, scanning cornea by using a non-contact optical device, extracting iris and pupil characteristics, monitoring an adjustment reaction, and performing three-dimensional reconstruction and multi-direction light path tracking analysis to obtain a myopia control lens prescription. And the distribution configuration of the annular belt is optimized, and the overlapping area is adjusted by combining the photochromic requirement, so that the fusion function partition structure is formed. Through collection of multi-source visual parameters and combination of spatial modeling and focusing path analysis, cut-through association of individual visual behaviors and structural attributes in lens customization is realized, functional requirements of different areas and photochromic response are dynamically fused through hierarchical adjustment of the spatial structure of an intervention area, and the visual performance of the lens is improved. And the material and microstructure data are synchronously output to a manufacturing link, so that the collaborative matching capability of the visual area partition is enhanced, and the requirements of a wearer on visual comfort and optical reaction are met.

The invention relates to the technical field of multi-point defocusing, in particular to an optical stable photochromic multi-point defocusing myopia control lens prescription generation method, which comprises the following steps of: based on eyes of a wearer, scanning cornea by using a non-contact optical device, extracting iris and pupil characteristics, monitoring an adjustment reaction, and performing three-dimensional reconstruction and multi-direction light path tracking analysis to obtain a myopia control lens prescription. And the distribution configuration of the annular belt is optimized, and the overlapping area is adjusted by combining the photochromic requirement, so that the fusion function partition structure is formed. Through collection of multi-source visual parameters and combination of spatial modeling and focusing path analysis, cut-through association of individual visual behaviors and structural attributes in lens customization is realized, functional requirements of different areas and photochromic response are dynamically fused through hierarchical adjustment of the spatial structure of an intervention area, and the visual performance of the lens is improved. And the material and microstructure data are synchronously output to a manufacturing link, so that the collaborative matching capability of the visual area partition is enhanced, and the requirements of a wearer on visual comfort and optical reaction are met.

The invention relates to the field of bionic vision, in particular to a visual observation image quality evaluation device and method based on a visual bionic structure, and aims to accurately simulate the independent refraction adjustment process of left and right eyes and truly restore imaging changes under refraction abnormities such as myopia / hyperopia. The consistency and fusion quality of binocular preconceived acquisition are improved by establishing an image fusion model, an evaluation system based on a deep integrated multi-modal fusion network model is established, a binocular vision bionic structure of a human eye refraction state is effectively simulated, focusing, image acquisition and fusion processing of left and right eyes are realized, and the human eye refraction state is effectively simulated. Therefore, the real evaluation of the visual bionic structure viewing effect by the human visual characteristic difference is realized.

A vision screening device displays visual stimuli and captures image(s) of the eye while the visual stimuli is changing over a period of time. The vision screening device uses the images to determine and monitor refractive error, ambient light level(s), pupil size, and gaze angle as the visual stimuli changes over the time period. Based on the refractive error, a determination of hyperopia and / or presbyopia is made. Based on the gaze angle and / or the pupil size, a confidence metric is determined. Based on the confidence metric and / or the determination, a recommendation for the patient is generated and displayed.

The application provides an optical system for fundus imaging of an eye to be tested, comprising: a fundus illumination light path for providing a light source to illuminate the fundus of the eye to be tested; a fundus imaging light path comprising an accommodating lens for fundus imaging of the eye to be tested; a fixation light path for providing a fixation target to enable the eye to be tested to fixate; and an auxiliary accommodating light path, the auxiliary accommodating light path sharing the accommodating lens with the fundus imaging light path to improve the accuracy and reliability of the accommodation. By sharing the accommodating lens between the auxiliary accommodating light path and the fundus imaging light path, the complicated linkage adjusting mechanism is avoided, the accuracy and reliability of the accommodation alignment are improved, the device cost is saved, and the purposes of economy, high efficiency, accuracy and convenience are achieved. Further, the fundus imaging of the eye to be tested is realized by combining the iris split imaging and the fundus illumination technology, and whether the accommodation imaging light path of the fundus imaging optical system is adjusted to the clearest according to the refractive power of different eyes to be tested is objectively evaluated, so that the clearest fundus color photograph is obtained.

The invention discloses a pair of circle-of-vision far-end Panum myopia prevention and control glasses and a manufacturing method, and relates to the technical field of myopia prevention and control glasses. Comprising the following steps: carrying out adjustment function and phoria measurement on the comprehensive optometry unit; under the guidance of Sheard accurate measurement, near-end orientation determination of myopia measurement and a Panum fusion region is completed; aC / A measurement is carried out; performing binocular depth sense measurement based on the polarized light stereoscopic vision picture; measuring the myopia level and the adjusting intensity; quantifying a non-cross parallax position; determining a corresponding area boundary of the myopia prevention and control glasses; the non-cross parallax far-end position and the vision field circle position are the bottom edge thickness of the prism, and the Bernoulli myopia prevention and control glasses are customized according to the width of the fusion rupture point. According to the method, myopia prevention and control can be completed under the conditions that the reading amount is not reduced and outdoor activities are not demanded, the method is a practice process of a far-end effect of non-cross parallax in a Top-down visual process, and the degree reduction of the myopia can be really realized.

An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye; an objective measurement optical system configured to measure objective refractive characteristics of the subject eye; and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to perform measurement of the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during a weakest power test in which a weakest point is being obtained by the subjective measurement optical system, a maximum visual acuity value or a set predetermined visual acuity value being readable from the weakest point.

A cosmetic eye mask used by being brought into contact with an area around eyes, includes a mask body including accommodations, the accommodations being disposed at positions corresponding to positions around respective eyes, and stimulators accommodated in the respective accommodations. Each stimulator includes a first electrode disposed at a position corresponding to a position on a lateral side of a corresponding eye and at an outer part of a face, and a second electrode disposed at a position corresponding to a position on a lower side of the corresponding eye in such a manner that a longitudinal direction of the second electrode elongates along the corresponding eye. Each stimulator is configured to apply electrical stimulation to a human body by passing electricity between the first electrode and the second electrode. The second electrode includes a conductive second electrode body and a conductive thin sheet accommodated along a longitudinal direction of the second electrode body.

1. Name of the product in this design: Adjustment Inspection and Training Auxiliary Device. 2. Purpose of this design: An auxiliary tool for training and examining eye accommodation ability. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

Various implementations disclosed herein include devices, systems, and methods that track an eye characteristic (e.g., gaze direction, eye orientation, etc.). For example, an example process may include producing light that reflects off a retina of an eye, receiving an image of a portion of the retina from an image sensor, the image corresponding to a plurality of reflections of the light scattered from the retina of the eye, obtaining a representation of the eye corresponding to a first accommodative state, the representation representing at least some of the portion of the retina, and tracking an eye characteristic based on a comparison of the image of the portion of the retina with the representation of the eye.

Some implementations disclosed herein provide systems, methods (200) and devices (10) that use a retinal imaging technique to assess a user's eye (45) accommodation (i.e., focusing) during use of an electronic device (10), e.g., in real-time. One or more light sources (322a-d, 1022a-d) produce one or more illuminated spots (320, 420, 520, 620) on the retina that are detectable via a sensor (324, 1024). The size and shape of the spots (320, 420, 520, 620) depend on the eye accommodation / focusing, and thus are used to identify accommodation / focusing changes or measure the eye's accommodation / focusing. Eye accommodation can be determined in real-time while a user is viewing, interacting with, or otherwise experiencing electronic content via the electronic device.

The application discloses a spectacle lens of continuous high-order phase modulation and a phase modulation method thereof. The application mainly solves the problem that the micro-lens array and the micro-cylindrical lens array form a circular diffraction spot and a radial diffraction spot respectively in imaging, and meanwhile, a defocus surface is formed. The appearance of the defocus surface brings about the imaging ghost phenomenon in near use of the lens, and easily causes wearing discomfort, which is the disadvantage of the myopia prevention and control frame lens based on the array type micro-lens or micro-cylindrical lens structure. Different from the design scheme of the micro-lens array and the micro-cylindrical lens array, the application adopts a phase type device structure with high-order phase delay or high-order aberration generation effect to design a frame spectacle lens with potential myopia progression control effect, and the spectacle lens and the frame spectacle with the spectacle lens can ensure to provide full field of view vision correction in the dynamic field of view range of the eye. Meanwhile, through high-order phase modulation of an imaging wave surface, high-order aberration is used to actively inhibit the imaging information of high-frequency spatial frequency, so that a blurred image surface is generated in a peripheral field of view area, and the stimulation to the eye accommodation is weakened.

The invention relates to a method for determining an ophthalmic lens intended to be worn by an individual, said ophthalmic lens being adapted to provide a visual correction to the individual in at least one given visual gaze direction, said visual correction being based on wearer data comprising prescription data of the individual, wherein the method comprises the steps of: - determining a parameter related to the accommodation dynamics of the eye of the individual, - determining said ophthalmic lens based on said wearer data and the parameter related to the accommodation dynamics of the eye of the individual. The invention also relates to a device for determining a parameter related to the accommodation dynamics of the eye of an individual in a method according to the invention.

This invention relates to the field of lens technology, particularly to a progressive multifocal ring-focusing and defocusing converging lens, comprising: a lens matrix, a distance vision ring-focus area, a near vision ring-focus area, a progressive area, and an outer vision area. The ring-focusing and defocusing converging microstructure is as follows: in the distance vision ring-focus area corresponding to the main optical area, a single ring-shaped cylindrical convex microlens generates a defocus amount C1, which is then converged by all the ring-shaped cylindrical convex microlenses in the upper distance vision area to generate a first converged defocus amount C11. In the near vision ring-focus area, a single ring-shaped cylindrical convex microlens generates a defocus amount C2, which is then converged by all the ring-shaped cylindrical convex microlenses in the lower near vision area to generate a second converged defocus amount C11. This invention achieves a smoother change in defocus amount at mid-to-long distances, reducing visual fatigue. It solves the problem in existing technologies where some lenses exhibit unstable defocus amounts at mid-to-long distances, resulting in unstable defocus amounts even with accommodation, thereby preventing and controlling the progression of myopia in children and adolescents.

The utility model relates to the technical field of engineering machinery, in particular to an excavator balance iron back-up image anti-collision installation structure which comprises balance iron, a containing cavity is formed in the rear end face of the balance iron, a groove module is fixedly connected in the containing cavity, an installation structure is fixedly connected to the groove module, and the installation structure is fixedly connected to the back-up image of the balance iron. The mounting structure is provided with a welding nut, the mounting structure is detachably connected with the camera through the welding nut, the camera is mounted on the mounting structure in a specific shape, the whole camera can be hidden in the containing cavity, meanwhile, a good visual field can be obtained, and the camera cannot be damaged due to collision of obstacles.

A method for displaying virtual content to a user, the method includes determining an accommodation of the user's eyes. The method also includes delivering, through a first waveguide of a stack of waveguides, light rays having a first wavefront curvature based at least in part on the determined accommodation, wherein the first wavefront curvature corresponds to a focal distance of the determined accommodation. The method further includes delivering, through a second waveguide of the stack of waveguides, light rays having a second wavefront curvature, the second wavefront curvature associated with a predetermined margin of the focal distance of the determined accommodation.

A lens device includes a housing, a lens module, a cover, and an elastic member. The housing includes an opening and an accommodation space communicated with the opening. The lens module is disposed in the housing and is located in the accommodation space. The cover is disposed in the opening and is located above the lens module. The elastic member includes a first annular section and a second annular section. The first annular section is disposed between the cover and the housing and contacts the cover and the housing, and the second annular section contacts a peripheral side of the lens module, so that a sealed area is formed between the cover, the elastic member, and the lens module.

The multi-modal visual stimulation and intelligent adaptive combined myopia prevention and control system based on AR glasses realizes all-weather, personalized and full-scene myopia inhibition through the cooperation of multiple modules such as sensory visual stimulation, visual function training, AI scene dynamic identification and directional intervention, adaptive closed-loop feedback and cloud / offline deployment. Through multi-dimensional visual stimulation and real-time physiological monitoring, the growth of the eye axis is accurately controlled, the precision of myopia prevention and control is improved, the off-focus and contrast setting is automatically optimized based on instant refraction and accommodation feedback to strengthen personalized intervention, light-weight AI and cloud pre-computation are introduced to effectively extend the device endurance, the existing AR platform is compatible, the development process is simplified, and the user compliance is enhanced.

The embodiments of the present invention provide an anti-shake driving device and lens module, the anti-shake driving device include a housing having an accommodation space, an anti-shake movable portion received within the accommodation space, an optical element having an optical axis and fixed to the anti-shake movable portion, an elastic support assembly movably suspending the anti-shake movable portion within the accommodation space, a driving assembly configured to drive the anti-shake movable portion to move relative to the housing in a plane perpendicular to the optical axis and an anti-collision assembly disposed between the anti-shake movable portion and the housing. The configured damping gel package effectively prevents the damping gel from deforming or rupturing when subjected to external impact, thereby ensuring stable performance.

An ophthalmologic apparatus capable of suppressing the occurrence of diplopia in an eye to be examined and more efficiently and appropriately measuring the eye characteristics of the eye to be examined is provided. [Solution] The ophthalmologic apparatus 1 includes a pair of measurement optical systems 25 provided corresponding to the left and right eyes E to be examined, each having a target projection system 44 that presents a target at a predetermined presentation distance to the eye, a focusing lens 44e that applies an accommodation stimulus to the eye E, a drive unit 23 that applies a convergence stimulus to the eye E, and a control unit 50. The control unit 50 controls the pair of target projection systems 44 to present a fixation target to be fixated by the eye E while changing the presentation distance from a first test distance to a second test distance, and controls the focusing lens 44e and the drive unit 23 to apply an accommodation stimulus to the left and right eyes E to prevent diplopia from occurring while the presentation distance is being changed.

The invention discloses a dynamic light field regulation and control contact lens for visual training, and belongs to the technical field of intelligent medical instruments and wearable equipment. Comprising a dynamic variable-focus optical module, a near-infrared nerve stimulation module and a control module which are integrated on a lens. The control module is configured to execute a co-stimulation procedure, so that the dynamic variable-focus optical stimulation and the near-infrared stimulation are in time sequence linkage. The co-stimulation program comprises a split-vision training mode and an alternating stimulation mode. The synergistic mechanism can actively train the eye regulation function, induce subconscious rhythm movement of pupils and promote neuroplasticity, so that the intervention effect superior to that of a single mode is achieved in the aspects of myopia active prevention and control, asthenopia relief and neurovision rehabilitation. According to the invention, all functions are seamlessly integrated in a conventional contact lens.

The present disclosure provides an imaging system. The imaging system may include a detector including a detector including detecting modules arranged along the circumference direction of the imaging apparatus and configured to form the accommodation space; and a collimator including collimating modules arranged along the circumference direction and configured to rotate around the axis of the accommodation space that is perpendicular to the circumference direction. One of the collimating modules may include multiple collimating units in different configurations. The multiple collimating units may be arranged along the circumference direction. Each of the multiple collimating units may be switched between an effective state and an invalid state via a rotation of the collimator around the axis of the accommodation space.

The utility model relates to the technical field of intelligent wearing, in particular to AR (Augmented Reality) glasses. The AR glasses provided by the embodiment of the utility model comprise a glasses frame and dioptric lenses, the glasses frame is provided with an accommodating groove, and the inner side wall of the accommodating groove is provided with a first groove; the refractive lens is detachably arranged in the containing groove, an elastic piece is arranged on the peripheral side of the refractive lens, the elastic piece is used for being clamped into the first groove so that the refractive lens can be fixed in the containing groove, and according to the AR glasses provided by the embodiment of the utility model, the refractive lens can be conveniently replaced, and the structure is simple.

The invention relates to a method (100) for determining a parameter of a progression profile (320, 420, 610, 620) for an eyepiece (710) intended for a user, the method comprising: obtaining (110) a prescription for the user, the prescription being indicative of at least an optical power suitable for far vision, measuring (140) or estimating (160) a remaining accommodation of the user, said remaining accommodation corresponding to the shorter distance for which the user corrected for far vision manages to have a sharp vision, and determining (170) a parameter of the progression profile based on both the prescription and the remaining accommodation.

An optical system to objectively measure accommodation in a patient including an infrared light source configured to provide retro-illumination light to a retina of an eye during a test; a wavefront camera configured to continuously record Shack-Hartmann centroids from the eye during the test providing a wavefront camera output; and an infrared-sensitive pupil camera configured to continuously record video of the eye from the retro-illumination light returned from the eye during the test providing a pupil camera output. The wavefront camera and the pupil camera are operatively coupled to synchronously or near synchronously operate at a sampling rate during the test. Related devices and methods are provided.

This invention proposes a 3D display and visual training device based on a mobile phone, comprising several lenses, a first light valve, a partition, an elastic fixing member, and a mounting slot. The first light valve and the focal plane of the lens form a first angle. The mounting slot is used to mount the mobile phone, and the elastic fixing member is used to ensure that the mobile phone's display screen is tightly fitted to the first light valve. The display screen and the focal plane form a second angle, which is equal to the first angle. The mobile phone display screen displays two corresponding entertainment images. The partition is used to separate the left and right images. Each image has pixels. This invention proposes that the display screen is tilted, and pixels at different heights in the image trigger different eye accommodations. The movement of pixels in different height areas can achieve visual training, combining entertainment and visual training. This invention also proposes to set the distance between pixels at different image heights so that the eye convergence triggered by the pixel distance is equal to the eye accommodation, effectively solving the problems of fatigue and dizziness.

To provide a spectacle lens that can assist both accommodation and convergence in near vision and reduce fatigue and stress of a wearer. [Solution] The eyeglass lens 1 is formed with a distance portion 10 located at the top of the lens for distance vision and a near portion 11 located at the bottom of the lens for near vision. The near portion 11 is provided with a depth of field extension component δ1 whose power changes to the positive side as it moves outward in the direction perpendicular to the optical axis of the lens, and a constant prismatic refractive power with a base direction on the nose side is provided to the entire surface of the lens.