33 results about "Central vision" patented technology

The invention discloses a multi-point defocus management method for intelligent training glasses, and particularly relates to the technical field of defocus management, and the method comprises the following steps: S1, data collection; s2, scene recognition and intention judgment; s3, generating a dynamic defocusing scheme; s4, performing out-of-focus stimulation presentation; and S5, performing effect evaluation and adaptive adjustment. Original isolated eye movement tracking, scene recognition and adjustable optical technologies are organically connected in series through an intelligent decision-making core, an autonomous system capable of managing defocus like automatic driving is formed, the fundamental pain point that a traditional technology is static and rigid and cannot adapt to the dynamic requirement of a user is solved, and the user experience is improved. According to the invention, qualitative change of defocus stimulation from fixing to following is realized, it is ensured that the defocus stimulation can continuously and accurately act on the most critical area of the retina, meanwhile, the definition of the central view is ensured to the maximum extent, the contradiction between the defocus effect and the visual comfort is solved, and accurate intervention is realized.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing symmetric or asymmetric optic with aspheric surface which redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The intraocular lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the intraocular lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the intraocular lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

The invention discloses a scattering lens and a design method thereof, which are applied to the technical field of optical devices and visual correction, and aims to solve the technical contradiction that the traditional myopia control lens is difficult to give consideration to the central visual definition and the effective intervention of peripheral retina. Unit density, size and scattering angle are configured in a differentiated manner, and optical artifacts are suppressed by adopting aperiodic arrangement; a pupil adaptive modulation layer and a task mode switching module are combined to realize dynamic response of illumination and vision tasks; in design, based on individual physiological parameter reverse optimization, a multi-target genetic algorithm is adopted for iterative calibration, the peripheral retina contrast regulation and control efficiency is remarkably improved by more than three times, meanwhile, it is guaranteed that the contrast loss of a central area is lower than 5%, and the high-precision, personalized and all-weather myopia control effect is achieved.

The invention discloses a partitioned scattering optical lens for myopia control and a design method of the partitioned scattering optical lens, which are applied to the technical field of optics, and aims to solve the problem that the central visual quality and the peripheral myopia control effect cannot be considered at the same time in the prior art, the optical lens comprises a central optical region, a peripheral optical region and a smooth transition zone, the central optical area is low in scattering coefficient and high in MTF, a high modulation transfer function and low scattering loss are achieved, the peripheral optical area is high in scattering coefficient and low in MTF, the central optical area is used for inducing peripheral myopic defocus, the smooth transition area is used for achieving continuous gradual change of the scattering coefficient, visual sudden change is avoided, and visual comfort is ensured. The design method comprises the steps of eye parameter acquisition, optical performance target definition, microstructure design and simulation optimization, through the scheme, effective decoupling of central vision and peripheral myopia control is achieved, high-definition vision is ensured, myopia progress is restrained, and wearing comfort is improved.

The application discloses a multifocal lens, which comprises a central region and an overcorrection region surrounding the central region, the multifocal lens has a first preset optical power at a central position of the central region, the first preset optical power is higher than a prescribed focal power; the multifocal lens has a second preset optical power at a first position of the overcorrection region, the second preset optical power is lower than the prescribed focal power. The multifocal lens of the embodiment of the application sets the central region as a high-addition region, so that the central region can generate myopic defocus, and the myopic defocus is generated in a wide area of the retina, which is helpful to control the myopia development of the user's eyes; meanwhile, the overcorrection region is further arranged around the central region, and the overcorrection region is set to have a negative addition, so that the overcorrection region can balance the influence of the high addition of the central region, and clear central vision is generated, thereby the control of the myopic defocus is improved while the central vision is maintained.

A visual signal generation method is performed to improve visibility and readability in a gaze in a central vision of a passenger while the passenger is gazing at an object in a vehicle interior of a vehicle. The visual signal generation method includes detecting acceleration of a vehicle by a sensor; and outputting a visual signal flowing along a direction of the acceleration from an indicator visually recognizable by a passenger of the vehicle based on an output signal from the sensor.

The invention discloses a pulse laser-based myopia prevention and control lens processing method and system. The method comprises the steps of planning distribution and morphology of micro-optical structures on a lens according to user parameters; fixing the lens on a processing system; the method comprises the following steps of: selectively processing a microstructure array of a transition area and a peripheral functional area on the surface or inside a lens by adopting pulse laser through cooperative control of a galvanometer and a displacement platform, wherein the transition area is positioned on the outer side of a central non-processing area; wherein the structural size of the transition area is distributed in a gradual change mode, so that visual buffering is achieved. According to the invention, the cold processing characteristic of the pulse laser is utilized, the construction of a die-free and high-precision three-dimensional micro-optical structure is realized, the prepared lens can form an effective myopic defocus signal at the periphery of the retina while the central vision is ensured to be clear, and the lens has the advantages of high light transmittance, good visual comfort, high individuation degree and the like.

The present application relates to the technical field of myopia prevention and control lenses, and particularly relates to a double-curved surface defocus composite lens and a double-curved surface defocus composite glasses. The double-curved surface defocus composite lens comprises a central clear vision area, a discrete defocus area and an annular defocus area. The annular defocus area of the back curve generates a persistent optical defocus stimulation, the discrete defocus area of the front curve provides a high-intensity discrete stimulation, and the spatial superposition of the discrete defocus area of the front curve and the annular defocus area of the back curve forms a multi-dimensional stimulation, thereby breaking through the limitation of neural adaptability and maintaining a long-term prevention and control effect. The radial width of the annular defocus area of the back curve can accurately cover the peripheral sensitive visual field area of the retina, and in combination with the lenticule distribution of the discrete defocus area of the front curve, a persistent defocus intervention on the key area is formed. By synchronously correcting central vision and regulating the peripheral defocus state, the double effect inhibits the rapid growth of the eye axis and improves the efficiency of myopia prevention and control.

The invention relates to the technical field of myopic lenses, and discloses a first-order differential offset-free concentric ring alternating type outer ring defocusing method and a myopic lens. The method comprises the following steps: establishing a radial coordinate system by taking the center of a lens as an original point, and dividing the surface of the lens into a central visual area and an outer ring defocus area; the M concentric rings of the outer ring defocus area are divided into odd rings and even rings to form a ring belt structure with alternating wide and thin rings; and at the boundary position rm, establishing constraint conditions of the mth ring and the (m + 1) th ring in the ring belt structure, and solving a curved surface function of the (m + 1) th ring to form a first-order differential offset-free annular out-of-focus curved surface. The problem of optical aberration caused by first-order differential offset at the junction of the ring belt in the prior art is solved, the first-order differential offset-free design is adopted, and the optical performance and wearing comfort of the lens are improved.

Lenses and methods are provided for improving peripheral and / or central vision for patients who suffer from certain retinal conditions that reduce central vision or patients who have undergone cataract surgery. The lens is configured to improve vision by having an optic configured to focus light incident along a direction parallel to an optical axis at the fovea in order to produce a functional foveal image. The optic is configured to focus light incident on the patient's eye at an oblique angle with respect to the optical axis at a peripheral retinal location disposed at a distance from the fovea, the peripheral retinal location having an eccentricity between −30 degrees and 30 degrees. The image quality at the peripheral retinal location is improved by reducing at least one optical aberration at the peripheral retinal location. The method for improving vision utilizes ocular measurements to iteratively adjust the shape factor of the lens to reduce peripheral refractive errors.

The invention discloses an optical lens combined with a heterogeneous scattering unit array and a design method of the optical lens, which are applied to the field of optical elements, and aims to solve the technical problem that the existing optical lens is difficult to consider both central vision definition and peripheral defocus intervention efficiency. A personalized optical model is constructed according to the eye axis length, pupil dynamics and eye using behaviors of a user, a center area, a transition area and a peripheral area are divided, a sparse scattering unit, a gradient transition unit and a high-density strong scattering unit are configured respectively, the form, the size and the arrangement of the units are reversely deduced through a multi-target optimization algorithm, and a multi-target optimization model is constructed. Cooperative optimization of central high-contrast imaging and peripheral myopia signal enhancement is realized, intervention efficiency and wearing comfort are remarkably improved, a pupil adaptive adjustment layer is introduced, a scattering path is dynamically modulated to adapt to different illumination and visual tasks, and the performance of the lens can be dynamically adjusted according to the physiological state and eye use scene of a user.

The invention relates to the technical field of myopia control lenses, in particular to a multi-partition differentially regulated heterogeneous scattering unit array myopia control lens system which comprises a light energy analysis module, a scattering optimization module, an environment judgment module, an array regulation module and a configuration optimization module. According to the invention, through real-time acquisition and fitting of multi-partition incident reflection transmission light energy, dynamic analysis of partition light energy characteristics is realized, and adaptive association is established among partition scattering parameters, ambient brightness and pupil changes, so that the scattering angle and spacing adjustment of each area can be corrected in time along with light energy difference; therefore, the energy distribution from the central visual area to the peripheral control area is kept stable, the optical path difference and the energy difference are synchronously balanced, the retina irradiation mode is more constant, and the out-of-focus distribution precision and the overall imaging stability are improved.

The invention discloses an intelligent garbage collection device, and belongs to the technical field of garbage collection devices. An intelligent garbage collecting device comprises a main body frame and further comprises four independent box doors and an electric throwing door which are arranged on the main body frame and correspond to four garbage recycling boxes of kitchen garbage, recyclable garbage, other garbage and harmful garbage respectively. An electric sealing cover is arranged at the top of each garbage recycling bin; the two sets of independently operating moving mechanisms are arranged on side plates of the main body frame; the two common trays are respectively driven by the two sets of moving mechanisms; the central visual identification unit is arranged above the top plate of the main body frame and covers the areas of the four garbage recycling bins; the control system of the integrated edge computing unit is fixed in a protection box at the top of the main body frame and is connected with each execution component through a CAN (Controller Area Network) bus; according to the invention, through central visual identification and mixed garbage grading disposal protocols, the error throwing rate is obviously reduced.

Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing a piggyback lens which in combination with the cornea and an existing lens in the patient's eye redirects and / or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The piggyback lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the piggyback lens can be configured to improve or reduce peripheral errors at the location on the peripheral retina. One or more surfaces of the piggyback lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles.

A display device include a lens, a light source, a display panel including normal pixels and sensor pixels numbering less than the normal pixels to display an image, a reflective member reflecting display light emitted from the display panel toward the lens, and a processor. The processor controls the light source to emit near-infrared light, receive the near-infrared light reflected by a user's eye, converts information input to the sensor pixels into image data, generates eye feature models similar to the image data using a learning algorithm, determines an eye feature model most similar to an eye area of the image data among the generated eye feature models, tracks movement of a pupil center based on the determined eye feature model, and displays the image in high-resolution in a central vision area and the image in low-resolution in a peripheral vision area, using spatial coordinates of the tracked pupil center.

A lens element adapted to a wearer and intended to be worn in front of the wearer's eyes under standard viewing conditions, comprising: - a refractive region including a distance vision region having a first refractive power, a near vision region having a second refractive power, and an intermediate vision region extending from the distance vision region to the near vision region and having a refractive power that varies continuously from the first refractive power to the second refractive power; - at least a first group of optical elements having at least a third refractive power, the at least first optical element group being superimposed on at least one of the distance vision, intermediate vision, and near vision regions of the refractive region, characterized in that the combination of the first optical element group and the refractive region to which it is superimposed provides an optical function adapted to the wearer that focuses an image of an object on the wearer's retina in central vision when the wearer gazes at the object through the at least one first optical element group.

An apparatus for treating refractive error of an eye includes one or more optical elements configured to project a stimulus including a defocused image onto a peripheral retina outside the macula. While the stimulus can be configured in a variety of ways, in some embodiments the stimulus is arranged to reduce interference with central vision, such as macular vision. The stimulus can be a defocused image, can include an amount of defocus in a range of about 3 diopters ("D") to about 6 D. In some embodiments, the stimulus is of a brightness that is a suitable amount greater than the brightness of background illumination, such as at least 3 times the background brightness. In some embodiments, each of a plurality of stimuli includes a spatial frequency distribution having an amplitude profile, the spatial frequency distribution having a spatial frequency in a range of about 1 x 10 ‑1 cycles per degree to 2.5 x 10 1 cycles per degree.

The invention discloses a random grouping method for large-scale fMRI data coupling tensor decomposition, and belongs to the field of biomedical signal processing. The method comprises the following steps: firstly, randomly scrambling the sequence of all subjects, then carrying out equal-size sub-tensor division, and carrying out first-round decomposition by adopting a space coupling Tucker decomposition method; next, circularly moving left for several subjects, performing equal-size sub-tensor division again to form a new subject group, and performing a second round of space coupling Tucker decomposition; and analogy is carried out in sequence until displacement, sub-tensor division and space coupling Tucker decomposition of a predetermined round are completed, and decomposition results of group common and individual specific characteristics are obtained. According to the method, the adverse effect of the initial arrangement sequence of the large-scale subjects on feature extraction is weakened, the overall performance of the coupling tensor decomposition method is remarkably improved, especially the noise of networks such as central vision is reduced, and better feature support can be provided for brain function research and objective marker extraction of neuropsychiatric brain diseases.

The invention discloses a progressive multi-focus lens for controlling eye axis growth. The progressive multi-focus lens comprises a far-use area, a progressive channel and a near-use area which are sequentially arranged in the vertical direction. At least the peripheral area of the lens body is processed by laser to form a plurality of optical scattering microstructure points, and the microstructure points are uniformly distributed on the surface of the lens in an equiangular spiral manner according to a Fermat spiral distribution rule, so that multi-layer and multi-direction optical scattering is formed in the peripheral retina area of a wearer, the peripheral imaging contrast ratio is reduced, and the imaging quality is improved. Excessive growth of the ocular axis can be inhibited, and central vision is kept clear. The invention can be used in the field of juvenile myopia prevention and control.

An imaging device according to the present invention includes a gradation pixel unit and an EVS pixel unit. The gradation pixel unit acquires a partial captured image selectively including central vision. The EVS pixel unit acquires event data indicating movements in peripheral vision.

An optical element and imaging intervention device for eye axis development regulation, the optical element comprising a lens base body, the lens base body having a radial direction and a thickness direction perpendicular to the radial direction, a central vision area and a light field regulation area being formed on the lens base body, the central vision area being formed in the middle of the lens base body, the light field regulation area being annularly arranged outside the central vision area, a first surface away from the user's eye and a second surface opposite to the first surface being formed on the base body, a plurality of pyramid prism-shaped hollow structures being arranged in the light field regulation area, the pyramid prism-shaped hollow structure having an apex and a bottom surface, the bottom surface being directed towards the first surface, and the apex being directed towards the second surface. The optical element can reduce the transmission ratio of light passing through the light field regulation area, and improve the regulation effect of eye axis development.

The utility model discloses a visual center positioning auxiliary laminating device, which comprises a bottom plate, diagonal positioning strips and a positioning film, positioning patterns are arranged on the surfaces of the bottom plate and the positioning film, and accurate center calibration of a film group and an equipment screen is realized through center visual alignment; the two L-shaped diagonal positioning strips are fixed at diagonal corners of the bottom plate to form physical limiting, the release film can be conveniently pulled out through the cantilever structures, and the avoiding grooves can avoid physical keys of equipment. The positioning film is temporarily bonded with the bottom plate through acrylic ester or silica gel-based pressure-sensitive adhesive, the initial bonding force is 100-150g / i n, the positioning film has adjustability and stability, and a folding dotted line, a groove hole and a handle matching structure are designed on a bonding part of the positioning film, so that the bonding operation is convenient and fast. According to the utility model, a double system of visual positioning and diagonal physical positioning is adopted, the laminating deviation rate is reduced to below 1% from 5% in the prior art, and the laminating precision is improved by more than 50%; the application adopts a very simple structural design, accords with the trend of light weight and environmental protection, and has the advantages of high precision and cost.

The invention discloses a scattering optical lens applied to the technical field of optics, the inherent contradiction between the central vision definition and the peripheral myopia control efficiency is successfully decoupled by realizing the spatial programmability of the scattering characteristic on the lens, and the lens can be used for improving the vision definition and the peripheral myopia control efficiency according to the specific vision requirement of a user. Scattering units with low scattering intensity and narrow scattering angle distribution are densely arranged in a central vision area, so that high-resolution visual quality and contrast are ensured, and glare and visual discomfort are avoided. Meanwhile, scattering units with high scattering intensity, wide scattering angle distribution or a specific phase modulation function are arranged in the peripheral area, so that accurate myopia defocus signals are effectively induced on peripheral retinas or the imaging contrast ratio is greatly reduced, the myopia control effect is maximized, a regionalized optical intervention mode is adopted, and the myopia control precision is improved. The optical efficiency and the treatment effect of myopia control are remarkably improved, and meanwhile the visual comfort of a wearer is guaranteed.

The utility model relates to myopia prevention and control lens technical field, especially a double -sided composite prevention and control lens. Double -sided composite prevention and control lens includes lens body, microlens off -focus area and fog view area, and the optical center is formed to the center of lens body, and microlens off -focus area sets up in the first curve of lens body, and fog view area sets up in the second curve of lens body. Because the first curve of lens body sets up microlens off -focus area, and fog view area is arranged in the second curve, microlens off -focus area provides high -intensity off -focus stimulation, and acts on the peripheral imaging of retina, and the fog view area of second curve can reduce the contrast of peripheral retina, and while correcting central vision, under the double -effect mechanism of peripheral off -focus and contrast control, double -action inhibits the too fast growth of eye axis, and improves myopia prevention and control efficiency. Meanwhile, because the projection area of microlens off -focus area and fog view area coincides, the optimization ability to the peripheral imaging of retina is enhanced, and the precise intervention to the peripheral hypermetropia off -focus of retina is realized.

The invention relates to a method for decorating an ophthalmic article (1) comprising the steps of: - providing an ophthalmic article (1) having a substrate (9) having a first outer surface (9F) intended to be oriented towards the visual field (5) of a user and presenting at least one decorative zone (30) outside a central vision zone (35) of the ophthalmic article (1) and having on the first outer surface (9F) at least one topography (40) having a dimensional length greater than or equal to 1 mm for forming a decorative pattern; depositing on said first outer surface (9F) a thin layer (50) having a refractive index different from the refractive index of the substrate (9) to form an interference mirror (52) on top of the first outer surface (9F).

The utility model relates to a lens for correcting vision and controlling myopia development, and belongs to the technical field of ophthalmology and optics. The lens for correcting vision and controlling myopia development comprises a lens body, the lens body is provided with a central optical area, a competitive defocus area and a point diffusion area, and the central optical area is arranged at the central position of the lens body and used for providing clear central vision; the competitive defocusing area is arranged at a position, corresponding to the central optical area, on the lens body, and a competitive defocusing effect is realized through the competitive defocusing area; and the point diffusion area is arranged on the lens body at a position corresponding to the central optical area and the competitive defocus area. The lens for correcting vision and controlling myopia development provided by the utility model is used for correcting vision.

The invention relates to the technical field of optical lens design, and discloses a Fermat spiral golden angle offset lens arrangement method and system.The method comprises the steps that lens parameters are obtained, a curved surface polar coordinate system is established, a Fermat spiral model is adopted to generate an initial dot matrix, uniformity is evaluated through Voronoi space subdivision, and a final lens array is obtained. Self-adaptive offset optimization is carried out in a golden angle critical range, a central vision protection area is applied to constrain and restore the uniformity of an inner ring, a pre-distortion compensation mechanism is adopted when curved surface projection mapping is executed, optical parameters of the microstructure are configured according to the radial position, and finally a digital processing file is generated. According to the invention, high-uniformity isotropic arrangement of the microstructures can be realized on the curved surface of the lens, and the technical problems that the existing periodic arrangement generates structured artifacts and the existing non-periodic arrangement lacks adaptive optimization capability are solved.

The application relates to the technical field of myopic lenses, and discloses a concentric ring alternating type outer ring defocusing method with first-order differential without discontinuity and a myopic lens. The method comprises the following steps: taking a lens center as an origin to establish a radial coordinate system, and dividing a lens surface into a central vision area and an outer ring defocusing area; M concentric ring circles of the outer ring defocusing area are divided into odd ring circles and even ring circles to form a ring belt structure with alternating wide and narrow rings; at a boundary position r m , constraint conditions of an mth ring circle and an m+1th ring circle in the ring belt structure are established, and a surface function of the m+1th ring circle is solved to form a ring defocusing surface with first-order differential without discontinuity. The application solves the optical aberration problem caused by first-order differential discontinuity at the junction of the ring belt in the prior art, adopts the design of first-order differential without discontinuity, and improves the optical performance and wearing comfort of the lens.

The application discloses a scattering lens and a design method thereof applied to the technical field of optical devices and vision correction, and aims to solve the technical contradiction that a traditional myopia control lens is difficult to consider central vision clarity and effective intervention of a peripheral retina, the method constructs a central, transition and peripheral three-zone heterogeneous scattering array, differentiates and configures unit density, size and scattering angle, and adopts non-periodic arrangement to inhibit optical artifacts; in combination with a pupil self-adaptive modulation layer and a task mode switching module, dynamic response of light and a visual task is realized; on the design, based on individual physiological parameters, a multi-objective genetic algorithm is iteratively calibrated, and the peripheral retina contrast control efficiency is improved by more than three times, while the central area contrast loss is less than 5%, so that high-precision, personalized and all-weather myopia control effect is realized.

The invention discloses a myopia prevention and control composite out-of-focus lens which comprises a central vision area and a peripheral out-of-focus area. Wherein the peripheral defocusing area comprises a micro lens array layer arranged on the front surface of the lens and an adaptive curved surface layer arranged on the rear surface of the lens; the micro-lens array layer comprises a plurality of micro-lenses which are arranged in an annular array by taking the central visual area as an original point, the defocusing amount of the micro-lenses is gradually increased in a gradient manner from the center to the periphery, and after being refracted by the micro-lenses, defocusing light rays are projected to the peripheral retina at a preset incident angle; the adaptive curved surface layer is an asymmetric free-form surface designed based on the eye nasal side and temporal side retina out-of-focus sensitivity difference and 3D corneal topography data. By controlling the defocusing amount and the light incidence angle of the micro lens, it is ensured that a defocusing signal is accurately projected to an effective area around the retina, and stable myopic defocusing is formed. The asymmetrical free-form surface enables the nose side to obtain more defocusing compensation, thereby being more in line with the physiological characteristics of human eyes, and improving the effectiveness of the defocusing effect and the wearing comfort.