87 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.

Disclosed is a show case capable of managing and displaying objects stored therein. A show case according to one aspect of the present disclosure is a show case having an accommodation space in which an object is stored, and includes: a body; a moving body configured to form the accommodation space together with the body and including a transparent window; a blowing part configured to circulate air in the accommodation space; a first illumination configured to illuminate an object placed on a bottom surface of the accommodation space; a second illumination configured to illuminate a rear surface of the accommodation space; an input part to which an image of the object accommodated in the accommodation space is input; and a controller configured to recommend a type of second illumination to a user depending on the image input to the input part.

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 camera module according to one aspect of the present invention comprises: a housing including a body unit and an accommodation unit; an outermost lens arranged on the upper part of the accommodation unit; a substrate coupled to the lower part of the housing; a connector coupled to the lower surface of the substrate; a heating member arranged on one side of the outermost lens; and a transmission member for connecting the heating member and the connector, wherein the substrate includes a first groove formed on the side surface thereof so as to be penetrated by the transmission member, and the housing includes a partition wall extending from the lower surface thereof so as to be coupled to the upper surface of the substrate.

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.

The invention discloses an RFPA four-dimensional professional examination method, which comprises a first examination module (referred to as R for short) for examining monocular and binocular near and far vision of a patient in a natural state to obtain a first examination result; the second examination module (Fusion for short) is used for examining the far and near image fusion condition of the patient according to the first examination result to obtain a second examination result; and the third examination module (Phoria for short) is used for examining the far and near eye position conditions of the patient according to the second examination result to obtain a third examination result. The method is reasonable in design, the simple visual function four-step inspection method is used, the situations and problems of the eye ametropia problem, the image fusion function problem, the strabismus and adjusting function of a patient can be rapidly and accurately inspected, and a basis is provided for accurately correcting the visual abnormality problem of the patient.

Provided is an optical system including: a lens group including, in order from an object side of the optical system to an image side of the optical system, first to fifth lenses; in the plurality of spacers, the spacers located between the third lens and the fourth lens and at least partially in contact with the image side surface of the third lens are third spacers, and the spacers located between the fourth lens and the fifth lens and at least partially in contact with the image side surface of the fourth lens are fourth spacers; a lens barrel having an accommodation space in which the lens group and the plurality of spacers are accommodated; an air interval T34 between the third lens and the fourth lens on the optical axis and an air interval T45 between the fourth lens and the fifth lens on the optical axis meet the condition that T45 / T34 is greater than or equal to 4.9 and less than or equal to 6.99; the center thickness CT4 of the fourth lens on the optical axis and the spacing distance EP34 between the third spacer and the fourth spacer in the direction of the optical axis meet the condition that CT4 / EP34 is larger than or equal to 1.47 and smaller than or equal to 2.03. According to the invention, the problem of divergence of an out-of-focus curve of an optical system in the prior art is solved.

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.

A zoom lens (2) capable of telescopic accommodation comprises a first lens group (G1), a second lens group (G2), and a P lens group (G3) arranged in sequence along an optical axis (C) from the object side to the image side; the first lens group (G1) has a negative refractive power; the second lens group (G2) has a reflective optical element that bends the optical axis (C); when telescopically accommodated, the second lens group (G2) moves toward the image side along the optical axis (C), and at least a portion of the first lens group (G1) is telescopically accommodated in a space created by the movement of the second lens group (G2), thereby achieving a wide angle while achieving thinness and miniaturization during telescopic accommodation.

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.

According to an example embodiment, a near-eye display (NED) assembly (200a, 200b, 200c, 200d, 200e) for a stereoscopic NED apparatus including a pair of NED assemblies is provided, the NED assembly comprising: an image projection portion (102) projecting collimated light that represents a preprocessed image5 (Id); an optical waveguide (106) comprising an incoupler (106a) arranged to receive the light projected from the image projection portion (102) and an outcoupler (106b) arranged to release the light received via the incoupler (106a); a diffractive optical element, DOE, (208a, 208b, 208c, 208d, 208e) arranged on a10 first side of the optical waveguide (106) to allow for viewing the light released from the optical waveguide (106) therethrough, wherein the DOE (208 a, 208b, 208c, 208d, 208e) is arranged to apply a phase modulation function that results in a phase delay that varies with a spatial position of an aperture of the DOE (20815 a, 208b, 208c, 208d, 208e); and a preprocessing portion (232) arranged to derive the preprocessed image (Id) based on an input image (I) via application of a preprocessing procedure that is arranged to apply an image-area-position dependent preprocessing in derivation of different image sub-areas of the20 preprocessed image (Id) to account for the variation in the phase delay through spatially corresponding sub-areas of the aperture of the DOE (208 a, 208b, 208c, 208d, 208e), wherein said preprocessing procedure and the phase modulation function are arranged to jointly provide a virtual image for perception through25 the DOE (208a, 208b, 208c, 208d, 208e) substantially in focus over a predefined depth range.

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.

A wearable display system includes a light projection system having one or more emissive micro-displays, e.g., micro-LED displays. The light projection system projects time-multiplexed left-eye and right-eye images, which pass through an optical router having a polarizer and a switchable polarization rotator. The optical router is synchronized with the generation of images by the light projection system to impart a first polarization to left-eye images and a second different polarization to right-eye images. Light of the first polarization is incoupled into an eyepiece having one or more waveguides for outputting light to one of the left and right eyes, while light of the second polarization may be incoupled into another eyepiece having one or more waveguides for outputting light to the other of the left and right eyes. Each eyepiece may output incoupled light with variable amounts of wavefront divergence, to elicit different accommodation responses from the user's eyes.

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.