44 results about "Ophthalmic optics" patented technology

The invention relates to the technical field of ophthalmology optics, in particular to a myopia control lens optical system integrating ray tracing and aberration correction, which comprises a wavefront phase acquisition module, a wavefront feature statistics module, a ray tracing simulation module, a microstructure form regulation and control module and a feedback control module. According to the method, accurate identification and datamation description of wavefront change under a dynamic vision condition can be realized by acquiring an eyeball wavefront phase matrix, performing gridding partition analysis and extracting local phase offset amplitude and time sequence characteristics, and a light propagation path model is constructed by combining statistical characteristics of an abnormal wavefront region; the self-adaptive compensation is carried out on the local focus deviation, and the spatial distribution optimization of the refractive index and the curvature is further realized based on the microstructure form regulation and control, so that the real-time matching of the optical parameters and the wavefront state is maintained during the processing and use of the lens, and therefore, the imaging quality is stabilized, the visual definition is improved, and the myopia control reliability is enhanced.

The invention relates to the technical field of ophthalmology optics, and discloses an implantable APD implant for treating presbyopia, and the method comprises the steps: carrying out the focal power mapping of a far-sight diopter component in a target optical parameter, obtaining the basic refraction surface type data, and carrying out the layout of a near-sight diopter component annular structure, and obtaining the diffraction phase structure data; carrying out integrated aberration balance on the two kinds of data to obtain a composite optical surface type data set; converting the phase variation in the composite optical surface type data set into an initial step height by combining a lens material and an environmental medium optical constant; obtaining diffraction structure morphology parameters based on material dispersion attribute optimization; constructing a digital processing map by taking the geometric position of the surface as a processing node and taking a topology and depth evolution relationship as a processing edge; performing microstructure construction on the surface of the optical polymer substrate according to the digital processing atlas to obtain an APD implant; according to the invention, the APD implantation processing efficiency and the optical adaptability efficiency can be improved.

The invention belongs to the technical field of ophthalmic optics, and relates to a design method of a personalized spectacle lens and the spectacle lens. The design method comprises the following steps: constructing a spectacle-eye joint mathematical model based on spectacle frame posture and eyeball rotation, and analyzing and calculating the mathematical model to obtain a theoretical diopter calculation formula of the lens surface under prescription diopter; based on the basic eye model, according to the prescription diopter, the posture of the spectacle frame, and the central diopters, refractive indexes and central thicknesses of the inner and outer surfaces of the lenses, constructing a lens-eye system comprising the lenses to be optimized and eye models with different rotation angles; calculating the actual diopter of the surface of the to-be-optimized lens based on the intersection point of the human eye visual axis of the eye model with different rotation angles and the surface of the to-be-optimized lens; taking the minimum absolute value of the difference between the actual diopter and the theoretical diopter of the surface of the to-be-optimized lens as a target, ensuring the imaging quality and machinability of the lens, and optimizing the parameters of the inner surface of the to-be-optimized lens to obtain the personalized spectacle lens considering the posture of the spectacle frame and the rotation of the eyeball.

The utility model discloses visual function adjustment training appearance and system relates to ophthalmic optics instrument technical field. A kind of visual function adjustment training appearance, including display panel and light stimulation part, the front of display panel includes the display for output visual stimulation information;The light stimulation part includes the light district at the outer periphery of display panel front, and light district is arranged with light emitting piece to radiate the light of preset wavelength for user visual, and the eyes of the user are illuminated. The utility model improves the adjustment and training effect of visual function by the synergistic effect of visual stimulation information and illumination.

This invention provides an ophthalmic optical device that eliminates the need to place a separate lens attachment between the objective lens and the eye under examination by changing the working distance between the objective lens and the eye under examination when observing the posterior segment and when observing the anterior segment. [Solution] In the ophthalmic optical device, when photographing the posterior segment of the eye under examination, a position conjugate to the vertical scanning unit is formed in the anterior segment of the eye under examination, and the scanning beam from the vertical scanning unit is focused on the posterior segment of the eye under examination. When photographing the anterior segment of the eye under examination, the working distance, which is the distance between the eye under examination and the objective lens, is greater than the working distance when photographing the posterior segment, and the scanning beam from the vertical scanning unit is focused on the anterior segment of the eye under examination. The scanning direction of the scanning beam by the vertical scanning unit is the same when photographing the posterior segment and when photographing the anterior segment.

The utility model provides an ophthalmic lens, and relates to the technical field of ophthalmic optics. An optical part of the lens has a geometric center, and the focal power of any point of the optical part and the focal power of the geometric center meet one of the following conditions: the focal power of any point of the optical part is greater than the focal power of the geometric center; the focal power of any point of the optical part is smaller than that of the geometric center; the focal power of partial points of the optical part is greater than the focal power of the geometric center, and the focal power of the rest points is equal to the focal power of the geometric center; the focal power of partial points of the optical part is smaller than the focal power of the geometric center, and the focal power of the remaining points is equal to the focal power of the geometric center. The focal power on the circumference is continuously distributed along the circumference at any radius by taking the geometric center as the circle center, and the distribution trends of the focal power on at least two angles along the radius are different, so that the lens is better matched with the field angle of the lens, and the lens defocusing amounts of different angles in the corresponding field angle range are basically the same.

The invention discloses an optometry method for high-precision multi-type combination, which is characterized by comprising the following steps: S1, acquiring an objective refraction parameter set through an automatic optometry unit; s2, implementing interactive subjective optometry based on a virtual reality interface, and generating a subjective correction parameter set; s3, acquiring high-order aberration data by adopting a wavefront aberrometer; s4, performing a refractive adaptability test in a dynamic visual scene to obtain a dynamic compensation parameter; s5, generating an initial optometry scheme through a multi-modal data fusion algorithm; s6, optimizing a lens parameter combination based on a genetic algorithm; s7, implementing a double-blind verification test and obtaining a visual quality score; and S8, iteratively optimizing the final prescription according to the verification result. The problem of subjective or objective data splitting in traditional optometry is solved through a multi-modal fusion algorithm, accurate adaptation of a dynamic visual scene is achieved through eye movement tracking and virtual reality verification, and safety and efficiency of ophthalmic optical optometry are guaranteed.

The application discloses a kind of optometry methods for high-precision multi-type combination, it is characterized in that, including the following steps: S1, by automatic optometry instrument obtains objective refraction parameter set;S2, based on virtual reality interface implements interactive subjective optometry, generates subjective correction parameter set;S3, using wavefront aberration instrument collection high-order aberration data;S4, carries out refraction adaptability test under dynamic visual scene, obtains dynamic compensation parameter;S5, by multimodal data fusion algorithm generates initial optometry scheme;S6, based on genetic algorithm optimization lens parameter combination;S7, implements double-blind verification test and obtains visual quality score;S8, according to verification result iteration optimization final prescription.It is solved that traditional optometry is in the problem of subjective or objective data split, dynamic visual scene is accurately adapted using eye movement tracking and virtual reality verification, and the safety and efficiency of ophthalmic optical optometry are guaranteed.

The utility model provides a toric ophthalmic lens, and relates to the technical field of ophthalmic optics. The toric ophthalmic lens is used for correcting astigmatism of human eyes; an optical part of the lens is provided with a geometric center, in a circular or annular range with the geometric center as a circle center, the focal power distribution trends in two radial directions on the same diameter are symmetrical about the geometric center, and the focal power distribution trends in the radial directions corresponding to any two different angles are the same. According to the toric ophthalmic lens provided by the utility model, the distribution trends of the focal powers in the two radial directions on the same diameter are symmetrical about the geometric center, and the distribution trends of the focal powers in the radial directions corresponding to any two different angles are the same; while astigmatism correction is achieved, it is guaranteed that functionality in any radial direction is the same, and the overall optical performance of the lens is more accurate.

The invention belongs to the technical field of ophthalmic optics, and relates to a microstructure myopia prevention and control lens and a design method thereof.The microstructure myopia prevention and control lens comprises a mother lens and a negative microlens array, and the mother lens comprises a central bright vision area and a regulation and control area; the negative micro lens array is arranged on the surface of the regulation and control area of the mother lens and comprises a plurality of even-order aspheric negative lenses arranged in an array mode, and the main curvature of each even-order aspheric negative lens changes from a negative value to a positive value from the center to the edge. According to the micro-structure lens with the even-order aspheric negative lens with the main curvature changing from the negative value to the positive value from the center to the edge, the light deflection angle of most of the area surrounding the center on the micro-structure can be increased, so that the aberration of medium-aperture and small-aperture light passing through the micro-structure is increased; the inhibition effect of the lens on the retina imaging contrast in a low-frequency band is further improved, the retina imaging contrast is reduced to be maximized under the condition of the same microstructure rise, and therefore the optimal effect of inhibiting the myopia progress is achieved.

The invention provides an optical lens, and relates to the field of ophthalmic optics, the optical lens comprises a lens body, the lens body is provided with a central optical area and a middle peripheral optical area which are sequentially distributed along the radial outward direction, and the focal power of the central optical area is D0; the middle circumference optical area is provided with a plurality of microstructures arranged in an array mode, the focal power of part of the microstructures is Da, the focal power of part of the microstructures is D0, and Da is larger than D0; and the rise differences of different points on the edge of the microstructure with the focal power of Da relative to the vertex of the geometric center surface type of the microstructure are the same. According to the invention, the rise differences of different points on the edge of the microstructure with the focal power of Da relative to the vertex of the geometric center surface type of the microstructure are the same, so that the optical smooth connection of the microstructure is realized, the introduction of interference such as dispersion and stray light of the lens body is reduced to a certain extent, and the visual quality is effectively improved.

The present disclosure is directed to lens, methods of making, designing lens and / or methods using lens in which performance may be improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In some embodiments, such lens may be useful for correcting refractive error of an eye and / or for controlling eye growth.

The present disclosure is directed to lens, methods of making, designing lens and / or methods using lens in which performance may be improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In some embodiments, such lens may be useful for correcting refractive error of an eye and / or for controlling eye growth.

An ophthalmic optical system for observing an subject eye, including: an objective optical system that forms a pupil that has a conjugate relationship with a pupil of the subject eye, wherein, given that a distance from a pupil position that has a conjugate relationship with the pupil of the subject eye to the pupil of the subject eye is L, and a sum of central thicknesses of lenses included in the objective optical system is D, a conditional expression expressed by0.1≤D / L≤0.25is satisfied.

An optical system is capable observing a peripheral field away from a visual axis and includes a reflection mirror unit forming an image of an examined eye with two concave mirrors in an opposing arrangement facing each other at the examined eye side, this being the upstream side, of a first optical unit and a second optical unit. In the reflection unit there is a conjugate relationship between one focal point thereof and another focal point thereof. By forming an image of the examined eye using the reflection unit a distance can be secured between the examined eye and the optical system and a wide range of the examined eye can be observed.

An optical lens to slow down the progression of vision impairment An optical lens intended to be worn in front of an eye of a wearer to correct a vision impairment and to slow down the progression of said vision impairment of an eye of a wearer, said ophthalmic optical lens having a substrate, a front surface and a back surface, said ophthalmic optical lens comprises a plurality of optical elements, wherein: at least one light ray passing through the optical lens over a pupil having at least a 4 mm diameter passes through at least one of the plurality of optical elements, wherein over the said pupil the optical lens produces a first optical path map (OPD1), a best atorical form fitting of the first optical path map (OPD1) produces a second optical path difference map (OPD2), a differential optical path map (DOP) being composed as the difference between said first optical path difference map (OPD1) and said second optical path difference map (OPD2), each optical element produces constant phase shifting so that the differential optical path map (DOP) is a piecewise constant surface of at least two levels and at least part of the at least two levels is spatially randomly distributed.

The present invention relates to the technical field of ophthalmic detection instruments, and particularly to a fully automatic ophthalmic optical biometer, which includes an optical path system for measuring the human eyeball. The optical path system includes a pupil imaging optical path for eyeball tracking; a Y-direction movement mechanism, on the top of which the optical path system is installed, and the Y-direction movement mechanism is used to drive the optical path system to move along the Y-axis direction; a Z-direction movement mechanism, above which the Y-direction movement mechanism is arranged, and the Z-direction movement mechanism is used to drive the optical path system to move along the Z-axis direction; an X-direction movement mechanism, above which the Z-direction movement mechanism is arranged, and the X-direction movement mechanism is used to drive the optical path system to move along the X-axis direction.

1. Name of the designed product: biometer (ophthalmic optics). 2. Use of the designed product: biometer for ophthalmology. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention discloses a method and equipment for inducing and analyzing a convergence-divergence related potential, relates to the technical field of computer display, electroencephalogram, event related potential and eye vision optics, and aims to provide a user with an electroencephalogram cap for performing a binocular split vision test, presenting a group of dot matrixes in front of each eye, obtaining a complete image through binocular image fusion, and displaying the complete image on the basis of the binocular split vision test. Image observation is carried out twice in a fixed time, if the images of the two image observation are different, a judgment key is pressed down, and the key judgment time and the electroencephalogram signals of the second image observation from beginning to end are recorded. According to the invention, more objective inspection index data is provided for research of the gathering and diverging function.

Systems and methods for performing ophthalmic optical coherence tomography with multiple resolutions are disclosed. In some embodiments, a system includes a light source, an output lens, and a set of optical components between the light source and the output lens, the set of optical components including an afocal zoom telescope. The set of optical components is adapted to provide imaging at a first field of view having a first resolution and at a second field of view having a second resolution, where the first field of view is wider than the second field of view and the second resolution is higher than the first resolution. Methods of performing ophthalmic optical coherence tomography with one or more resolutions can be performed using one or more of the systems described herein.

An ophthalmic device for observing a subject eye, including: a light source; a scanning section that scans light from the light source; and an objective optical system configured to form a pupil, which has a conjugate relationship with a pupil of the subject eye, at the scanning section, wherein the objective optical system has, in order from the scanning section toward the subject eye, a first lens group that is positive, a second lens group that is positive, and a third lens group that is disposed between the first lens group and the second lens group, and that includes a concave surface configured to diverge light.

The invention relates to an ophthalmological optical observation apparatus for use during a treatment of the eye by means of laser radiation. It comprises a contactless fundus imaging system having at least one optical element and a laser protection filter with a transmission characteristic suitable for blocking the laser radiation used during the treatment of the eye. In this context, at least one optical element of the contactless fundus imaging system is provided with at least one coating that realizes the transmission characteristic and thus forms the laser protection filter.

The invention relates to the technical field of myopia prevention and control and ophthalmology optics, and discloses a myopia prevention and control optical element with a spectral selectivity contrast adjustment function and an active system. In order to solve the problems of granular sensation, full-spectrum white fog sensation and incapability of accurately utilizing longitudinal chromatic aberration to provide spectral selective contrast regulation signals in the prior art, a nano scatterer of 1nm-150nm is arranged on the inner / surface of an optical substrate, and the contrast of a short wavelength channel is lower than that of a long wavelength channel by utilizing Rayleigh scattering, so that the specific haze difference requirement is met; the active system can dynamically regulate and control the contrast in cooperation with the light-emitting source and the control module. The lens is free of granular sensation, does not sacrifice central visual acuity, is suitable for spectacle lenses, hanging lenses and the like, and can be combined with a defocus lens and a far image screen to realize efficient myopia prevention and control.

An ophthalmic optical system for observing an subject eye, including: an objective optical system that forms a pupil that has a conjugate relationship with a pupil of the subject eye, wherein, given that a distance from a pupil position that has a conjugate relationship with the pupil of the subject eye to the pupil of the subject eye is L, and a sum of central hicknesses of lenses included in the objective optical system is D, a conditional expression expressed by0.1≤D / L≤0.2⁢5is satisfied.

The utility model relates to the technical field of ophthalmic optics, in particular to a bifocal sclera lens structure and a sclera lens thereof, which comprise a central optical area, a transition area and a landing area. The landing area comprises a first contact part integrally connected with the transition area and a second contact part integrally formed with the first contact part. The first contact portion has an outer wall and an inner wall. The second contact part protrudes outwards relative to the outer surface where the first contact part is located to form a protruding outer wall, the outer surface of the protruding outer wall is in a circular arc shape, and the free-form curvatures of the protruding outer wall and the outer surface of the first contact part are different. By arranging the protruding outer wall which is not the same as the first contact part in free-form curvature, a certain angle is formed between the protruding outer wall and the first contact part, so that the second contact part is in better contact with the sclera, meanwhile, the whole sclera lens has good stability, the supporting effect of the landing area is good, and the stability of the whole sclera lens structure is improved.

The present disclosure relates to an ophthalmological optical device for modifying at least one parameter of a treatment laser beam used for treating an eye of a patient and to an ophthalmological laser treatment device comprising the ophthalmological optical device, the ophthalmological optical device comprising a housing, an optical component, which is arranged in an interior of the housing, and which is configured to modify at least one parameter of the treatment laser beam, a support assembly, which is arranged at least partially in the interior of the housing and which is configured to position the optical component in the interior of the housing and a temperature control assembly, which is configured to control the temperature of the optical component.