50 results about "Central vision" patented technology

The invention provides a contact lens with peripheral defocus, and relates to the technical field of optical lenses, the lens comprises a contact optimization core area, a partitioned progressive microprism array area and a dynamic light scattering area, and the specific setting is as follows: the contact optimization core area is located at the geometric center of the lens, the outward extension radius is 1.8-2.2 mm, and the contact optimization core area provides clear central vision; according to the intelligent self-adaptive contact lens, the intelligent self-adaptive contact lens is characterized in that the intelligent self-adaptive contact lens comprises a contact optimization core area and a partition progressive microprism array area, the partition progressive microprism array area is located on the outer side of the contact optimization core area and surrounds the contact optimization core area in a concentric ring shape, and through collaborative design of the partition progressive microprism array area and the dynamic light scattering area, the real-time monitoring and dynamic adjusting capacity of a photoelectric feedback control module is combined; the problem that an optical structure of an existing product lacks dynamic adaptability is effectively solved, and the optical structure can be changed according to different illumination environments and wearing duration.

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.

A method and apparatus for generating a visual field pattern which serves as a subjective test protocol to evaluate central vision using dynamic image generation to prevent the brain from filling-in to provide better results of patient feedback and reporting of locations of visual disturbance. This enables effective central vision testing to detect the presence of visual field disruptions including scotoma, visual-neurological perceptual effects such as filling-in, and Troxler fading. The present method and apparatus can be used for vision monitoring and self-assessment, and more particularly for monitoring vision for damage or disease to the macula or retina.

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 novel corneal contact lens for controlling myopia development and a processing method, the novel corneal contact lens comprises a lens body, and the lens body is divided into a central optical area and an annular light adding area; the central optical area is located in the middle area of the mirror body and is concentric with the mirror body, and the central optical area has accurate diopter and is used for correcting far vision of a wearer and ensuring that the wearer obtains clear central vision; the annular light adding area is located on the outer ring of the central optical area, the annular light adding area is provided with positive spherical lens additional degrees compared with the central optical area, and the positive spherical lens additional degrees are achieved by adding fuzzy patterns to the annular light adding area. And the annular light adding area is used for reducing the definition and contrast of an image formed around the retina by the light passing through the area. According to the corneal contact lens, myopic defocus is generated on the periphery of the retina at the same time, and the imaging contrast ratio and definition are reduced, so that the excessive growth of the ocular axis can be more effectively inhibited.

A lens element suitable for a wearer and intended to be worn in front of the eyes of the wearer under standard viewing conditions, the lens element comprising:-a dioptric region comprising-a long-distance viewing region having a first refractive power,-a short-distance viewing region having a second refractive power,-a middle-distance viewing region,-a first lens element having a first refractive power,-a second lens element having a second refractive power,-a second lens element having a second refractive power,-a second lens element having a second refractive power; a middle-distance viewing region extending from the long-distance viewing region to the short-distance viewing region and having a refractive power continuously changing from a first refractive power to a second refractive power; -at least a first set of optical elements having at least a third refractive power, the optical elements being superimposed on at least one of the long-distance viewing region, the middle-distance viewing region, the short-distance viewing region of the refractive region, characterized in that the optical elements have a second refractive power; the combination of the first set of optical elements and the dioptric region on which the optical elements are superimposed provides an optical function for a wearer such that an image of an object is focused under central vision on the retina of the wearer when the wearer gazes the object through at least one first set of optical elements.

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.

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 an enhanced toric lens 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 relates to a dynamic out-of-focus lens which has a certain diopter at the same time. Each lens comprises a lens frame, a lens body, a thin film, a micro lens and a driving device. A cavity is defined by the glasses frame, the lenses and the thin film, and fluid exists in the cavity. Through special optical design and arrangement, the micro lenses form myopic defocus on the peripheral retina while correcting the central vision. The invention also provides a pair of glasses using the dynamic out-of-focus lens.

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 application discloses a kind of based on biological visual characteristic micrograph optimization method, it is related to microorganism microscopic imaging technical field, comprising: S1, according to the characteristics of input image, the parameter of retinal model is adaptively adjusted;S2, using retinal model to carry out multilevel central vision channel and peripheral vision channel processing to input image;S3, the output data of central vision channel and peripheral vision channel are fused, and optimization image is generated.The application simulates the working principle of human visual system, especially the space-time filtering characteristics of retina, realizes the efficient optimization processing of microorganism microscopic image, solves the problems of low contrast, noise suppression not thoroughly, overlapping area separation difficulty of existing microorganism microscopic image, realizes the high-fidelity imaging of dense microorganism colony.

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.

This invention relates to the field of myopia control technology, disclosing an integrated correction and training lens and glasses based on retinal signal gradient reshaping, including a lens substrate for vision correction. The lens substrate is divided into a central vision correction zone and a multidimensional, three-dimensional, asymmetric optical signal field extending outward from the vision correction zone. The multidimensional, three-dimensional, asymmetric optical signal field includes 10,000-26,000 independent asymmetric signal field units with diameters ranging from 100-300 μm, laser-engraved on the concave surface of the lens substrate, and 400-1,500 three-dimensional structural protrusions with diameters ranging from 0.5-2 mm. Each three-dimensional structural protrusion has 4-12 independent asymmetric signal field units. This lens does not induce or increase astigmatism due to its own structure, and can alleviate the excessive stimulation of the retina caused by prolonged close-range eye use and abnormal environmental lighting signals, thereby slowing down excessive elongation of the axial length of the eye.

A contact lens for use in controlling the progression of myopia has a central optical zone approximating the normal diameter of the pupil of the eye that gives clear central vision at distance for the wearer. An annular peripheral optical zone that is substantially outside the diameter of the pupil is formed around the central optical zone with greater refractive power than that of the central zone so that oblique rays entering the eye through the peripheral optical zone will be brought to focus at a focal plane that is substantially on or anterior to the peripheral region of the retina.

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.

The invention discloses a microscopic image optimization method based on biological visual characteristics, and relates to the technical field of microbiological microscopic imaging, and the method comprises the following steps: S1, according to the characteristics of an input image, adaptively adjusting the parameters of a retina model; s2, performing multi-level central visual channel and peripheral visual channel processing on the input image by using a retina model; and S3, fusing the output data of the central visual channel and the peripheral visual channel to generate an optimized image. According to the invention, the working principle of a human visual system, especially the space-time filtering characteristic of the retina, is simulated, the efficient optimization processing of the microbiological microscopic image is realized, the problems of low contrast ratio, incomplete noise suppression and difficult overlapping region separation of the existing microbiological microscopic image are solved, and the high-fidelity imaging of dense microbiological populations is realized.

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 relates to improving the balance between effectiveness and compatibility of eyeglass lenses in slowing down myopia progression. To this end, the invention notably provides a method for calculating or optimizing an eyeglass lens (10) for at least one eye of an eyeglass wearer, such that the eyeglass lens (10) comprises: - a central vision area (30) having a substantially constant refractive power; and - an action area (32) adjoining the central vision area, which action area induces - at least in part a higher refractive power than the refractive power in the central vision area (30) and / or - at least in part a contrast reduction, wherein the method comprises: - providing user data comprising at least an equivalent sphere of a refractive defect of the at least one eye; - determining a main refractive power as the substantially constant refractive power of the central vision area for correcting the equivalent sphere of the refractive defect of the at least one eye; and - deriving a horizontal extension (r h ) and / or a vertical extension (r v ) of the central vision area (30) as a function of the main refractive power.