782 results about "Dioptre" patented technology

There are provided a method for designing a spectacle lens and a related technique thereof, the method including: a modeling step of dividing a pattern into multiple models with a deviation from a normally worn state of the spectacle lens as decentering, in which a reference model, a decenter model, and a tilt model are prepared as the multiple model; a sensitivity calculation step of calculating a decenter sensitivity and a tilt sensitivity; and a design step of using a base curve value in the vicinity of a balance solution as a base curve of the spectacle lens, wherein a base curve value c [unit: diopter (D)] which is a curvature of a surface in a region H where the on-retinal non-convergence region is not provided on an object-side surface is taken as x-axis, and the decenter sensitivity and the tilt sensitivity [unit: diopter (D)] are taken as y-axis, and an intersection of a plot of the decenter sensitivity and a plot of the tilt sensitivity is taken as the balance solution.

The invention belongs to the technical field of fundus imaging, and discloses an ultra-wide-angle ellipsoid confocal laser scanning fundus imaging system, which comprises a light splitting module, a light condensing module, a scanning module, a transmitting mirror group, an ellipsoid reflector and a detection module, wherein the center of the scanning module and the center of the transmitting mirror group are located on the same optical axis A, the pupil of the human eye is located at the first focus of the ellipsoidal reflector, and the entrance pupil of the transmitting mirror group is located at the second focus of the ellipsoidal reflector; and the transmitting lens group comprises a movable focusing lens and is used for changing the position of a first image surface of light reflected by the retina of the human eyes when moving along the optical axis A so as to realize clear imaging of the retina of the human eyes with different diopters. Under the condition that a free-form surface is not introduced, ultra-wide-angle multi-wavelength confocal laser scanning fundus imaging with the single intraocular field angle of 200 degrees is achieved, and the full-field optical resolution reaches 15 micrometers. And by moving the focusing lens, imaging compensation can be carried out on human eyes with diopters of-15D to + 15D.

The invention discloses a multi-point out-of-focus lens design optimization method for refractive error and a lens thereof, and relates to the technical field of optical design, and the method comprises the steps: carrying out the multi-refractive simulation optical test of the structure distribution characteristics of a to-be-optimized multi-point out-of-focus lens, obtaining the out-of-focus filling rate, aberration and astigmatism correction effect, then carrying out the partition aggregation, and obtaining the out-of-focus filling rate of the to-be-optimized multi-point out-of-focus lens. Obtaining a deviation area and a deviation characteristic of each diopter; constructing an optimization parameter library; performing compensation target analysis according to the deviation area and the deviation characteristic of each diopter to obtain an optical target parameter; and performing matching search in the optimization parameter library, determining a compensation parameter strategy, and performing structural design optimization on the structural distribution characteristics of the multi-point out-of-focus lens to be optimized. According to the invention, the technical problems of over-correction or insufficiency caused by defocus design unification in the prior art, serious stray light at the connection position of the edge of the multi-point micro lens and the circle of the lens and insufficient processing and assembling precision are solved, and the technical effect of improving the correction precision and visual stability of the lens is achieved.

The invention provides an optical lens, and the optical lens sequentially comprises a first reflection element with positive focal power from an object side to an imaging surface, the first reflection element comprises an incident surface, a reflection surface and an emergent surface, the incident surface of the first reflection element is a convex surface, and the emergent surface of the first reflection element is a convex surface; included angles of 45 degrees are respectively formed between the reflecting surface of the first reflecting element and the optical axes of the incident surface and the emergent surface of the first reflecting element; the second lens has focal power; the third reflecting element has focal power and comprises an incident surface, a reflecting surface and an emergent surface; included angles of 45 degrees are respectively formed between the reflecting surface of the third reflecting element and the optical axes of the incident surface and the emergent surface of the third reflecting element; and the fourth lens has negative focal power. The optical lens provided by the invention adopts two reflecting elements with diopters as light path turning elements, so that a light path is turned twice to realize periscopic telephoto, and the optical lens has the characteristics of small volume, large aperture, large target surface and good performance.

The invention provides a visual system, which comprises an element group and a lens cone group, when the diopter of the visual system is from + 2D to-5D, the moving distance delta L of the second element group along the optical axis, the combined focal length fz1 of the reflective polarizing element, the first quarter-wave plate and the first lens, and the combined focal length fz2 of the second lens, the second quarter-wave plate and the polarizing film meet the condition that delta L * (fz1 / fz2) is greater than or equal to 0.90 mm and less than or equal to 1.82 mm; and the maximum thickness Lb from the first side surface of the second lens barrel to the second side surface of the second lens barrel along the direction of the optical axis, the outer diameter Dbs of the first side surface of the second lens barrel and the inner diameter dbs of the first side surface of the second lens barrel meet the condition that Lb / (Dbs-dbs) is more than or equal to 0.56 and less than or equal to 2.36. The problem that smooth zooming and image quality improvement of a visual system in the prior art are difficult to consider at the same time is solved.

It is proposed a lens intended to be worn in front of or on an eye of a wearer and to provide a first refractive power (Rx) for correcting an abnormal refraction of the eye of the wearer; wherein the lens comprises a refractive area configured to provide the first refractive power (Rx) and a functional area configured to provide an optical function; and wherein on a first zone defined on the lens, more than 5% of the surface of said first zone has a local refractive power ranging from the first refractive power (Rx) minus 0.25 diopter and the first refractive power (Rx) plus 0.25 diopter, and more than 25% of the surface of said first zone covers the functional area.

The invention provides a VR visual system, the VR visual system comprises an element group and a lens cone group, the element group sequentially comprises a first element group and a second element group from a first side to a second side along an optical axis of the VR visual system, the second element group can move along the direction of the optical axis, the combined focal length fz1 of the reflective polarizing element, the first quarter-wave plate and the first lens and the inner diameter dam of the second side surface of the first lens barrel meet the condition that fz1 / dam is more than or equal to 1.60 and less than or equal to 2.66; and the outer diameter Dbs of the first side surface of the second lens cone, the inner diameter dbs of the first side surface of the second lens cone and the distance delta L of the second element group moving along the optical axis when the diopter of the VR visual system is from + 2D to-5D meet the following condition: (Dbs-dbs) / delta L is greater than or equal to 2.63 and less than or equal to 7.45. The VR visual system solves the problem that a VR visual system in the prior art is large in diopter adjustment range and is difficult to consider the structural stability at the same time.

The microstructure lens comprises a substrate, the substrate is provided with a bright vision area, a first optical area and a second optical area, and the first optical area and the second optical area are arranged around the bright vision area; the first optical area is located between the bright visual area and the second optical area and connected with the bright visual area and the second optical area. The bright vision area is used for generating a clear vision signal; the first microstructure array is arranged in the first optical area and is used for being matched with the substrate to provide a visual signal for stimulating the periphery of the retina; and the second microstructure array is arranged in the second optical area and is used for being matched with the substrate to provide at least two different visual signals for stimulating the periphery of the retina. The first optical area provides single-effect stimulation to compensate relative peripheral diopter close to the center of the retina macular, and lens wearing adaptability of a patient is considered; the second optical zone provides multiple-effect stimulation to compensate for gradually increasing relative peripheral diopter around the retina and delay the time of drug resistance generation of the product, thereby enhancing myopia management efficacy and prolonging efficacy time.

The invention discloses an intelligent zooming system and method for visual adjustment function training, and relates to the technical field of medical auxiliary equipment and visual health. The system comprises an intelligent zoom terminal and a control platform, and the control platform generates a training instruction set containing modulation parameters and task parameters and sends the training instruction set to the terminal; the modulation parameter controls the diopter modulator to generate a specific diopter change mode, and the task parameter controls the AR display module to present an interactive visual training task; the terminal controller synchronously executes diopter modulation and task presentation; the control platform further analyzes and optimizes modulation parameters to update subsequent training based on user interaction data collected during the training process. According to the invention, through cooperation of diopter change and visual training and parameter adaptive optimization based on user feedback, closed-loop personalized training of a visual adjustment function is realized.

The invention discloses an all-in-one eyeball comprehensive parameter measuring instrument and a method for measuring eyeball parameters by using the same. The measuring instrument comprises a signal light source, a signal light source sample arm, a signal light source reference arm, a scale light source, a scale light source sample arm, a scale light source reference arm, an annular light source, a telecentric lens, a zoom lens group and the like, the instrument can measure biological parameter information of human eyes, corneal curvature and eyeball diopter at the same time. The device is scientific and reasonable in design, and has the advantage that the curvature, the diopter and the biological parameters of the human eyes can be simultaneously measured at one time under the non-contact and non-invasive conditions.

The invention belongs to the technical field of refraction detection, and particularly relates to a human eye dynamic refraction detection method based on a three-dimensional phase deflection method. The method comprises the following steps: S1, based on a three-dimensional phase deflection imaging system and an iterative representation integral algorithm, obtaining a 3D shape of a to-be-detected human eye in place in real time; s2, on the basis of the 3D shape of the to-be-detected human eye, the current staring direction of the to-be-detected human eye is obtained in real time in place by combining a ray tracing method; s3, establishing a refractive imaging system, and obtaining a diopter value of the to-be-measured human eye in the current staring direction in real time in place based on the refractive imaging system; and S4, fitting different staring directions of the to-be-detected human eyes and the dynamic numerical curve of the diopter values in the corresponding staring directions to realize human eye dynamic refraction detection. According to the method, an accurate treatment scheme can be accurately provided for the ametropia patient in a real scene, and guidance can be provided in the aspect of personalized customization of the spectacle lenses.

The utility model discloses a lens for delaying eye axis growth by using a negative defocus technology, particularly relates to the field of optical spectacle lenses, and aims to solve the problems that myopia of children and adolescents in China is severe, low-age and severe, existing common methods include angle molding, defocus and foggy vision (point diffusion), and the prevention and control efficiency is declined due to the large use of the methods. According to the utility model, myopia can be better prevented and controlled, and the prevention and control efficiency is improved. A composite ring belt design is adopted, the defocusing amount of an aspheric micro lens in a composite ring belt structure is negative defocusing, and the range of the defocusing amount of the aspheric micro lens is-5.0 D-(-6.5 D). While clear vision correction is ensured in an optical central area, the defocusing amount of a ring belt outside the central area is in an asymptotically increasing trend, so that continuous defocusing is formed in a peripheral area, and the visual acuity is improved. And personalized compensation is carried out on the defocusing amount of the field angle to form a continuous myopia defocusing state, so that excessive increase of the ocular axis and the diopter is delayed, and the purpose of controlling myopia is achieved.

The invention discloses a projection lens and a projection illumination system. The projection lens comprises a first lens, a second lens, a third lens and a fourth lens which are coaxially arranged in sequence from an image side to an object side, the diopter of the first lens is negative, the diopter of the second lens is negative, the diopter of the third lens is positive, and the diopter of the fourth lens is positive. By limiting the ratio of the focal length of an optical system to TTL * F.NO, the projection lens can be ensured to have the characteristic of large aperture, the size of the lens is effectively reduced, the ultrathin characteristic and miniaturization of projection are realized, the total length of the projection lens along the optical axis direction is reduced to be less than 23mm, the size of the projection lens is reduced, and the size of the projection lens is reduced. Therefore, the lamp is more suitable for the welcome lamp of the vehicle.

The invention belongs to the technical field of regenerative medicine, and provides a circular cornea embedded micro lens, which comprises two areas, namely a first correction area and a plano area, preferably comprises three areas, namely two vision correction areas and a plano area, the two vision correction areas have the vision correction effect, the diopter of the plano area is 0D, and the diopter of the first correction area is 0 D, and the diopter of the plano area is 0 D; wherein the flat light area is provided with a through hole, and the applicant summarizes and finds that the through hole is formed in the center of the cornea embedded microlens, so that the phenomena of nebula and turbidity of the cornea after operation can be reduced. After the cornea embedded microlens provided by the invention is implanted, a patient can clearly see near objects and distant objects, so that clear vision is realized. The invention further provides a preparation method and application of the cornea embedded microlens.

The utility model discloses a lens for correcting hyperopia defocus and providing local defocus optical signal stimulation, which comprises an annular focal plane substrate and a defocus signal stimulation area, the defocus signal stimulation area is positioned on the surface of the annular focal plane substrate, and an optical refraction area of the annular focal plane substrate comprises a central equal diopter area, a middle correction area and an edge foot correction area; the out-of-focus signal stimulation area is composed of micro-lens structures which are distributed in an annular mode. The utility model has the beneficial effects that the ring focus curved surface is adopted to correct the hyperopia defocus, the harm of the hyperopia defocus to the deepening of the myopia of human eyes is relieved, and meanwhile, the edge position of the lens is fully corrected, so that the observation of the human eyes is clearer; the out-of-focus signal stimulation area can provide positive or negative out-of-focus optical signal stimulation and is used for stimulating the forward or backward movement trend of the retina, four types of out-of-focus amounts are adapted according to human eye adjusting force, more people are adapted, and myopia can be managed more effectively.

The invention provides an optical lens and near-to-eye display equipment. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from a human eye entrance pupil side to an image source side along the reverse direction of light transmission, the first lens has negative focal power, the light-out surface of the first lens is a convex surface, and the light-in surface of the first lens is a concave surface; the second lens has positive focal power, the light-out surface of the second lens is a convex surface, and the light-in surface of the second lens is a convex surface; the third lens has focal power; the fourth lens has positive focal power; the fifth lens has negative focal power, and the light emitting surface of the fifth lens is a concave surface; and the range of the distance CTW between the light incident surface of the fifth lens and the image source on the optical axis is adjustable. The optical lens provided by the invention has the advantages of adjustable diopter and excellent imaging quality.

The invention discloses a piezoelectric film partition dynamic focusing system and method for intelligent glasses. The piezoelectric film partition dynamic focusing system comprises an optical modulation layer, a sensing layer, a control engine, a hybrid driving layer and a closed loop verification module. The optical modulation layer is integrated with an N * M piezoelectric film array, each subarea is provided with an independent electrode and a gradient thickness structure, and intervals are filled with low-modulus insulating polymers. The sensing layer is used for acquiring fixation point, diopter, temperature and head movement information of a wearer; and the control engine executes voltage mapping, temperature drift compensation and resonance suppression according to the sensing data, and drives the hybrid driving layer to complete deformation and displacement compensation. And the closed-loop verification module outputs a defocusing error in real time and feeds back a correction voltage. According to the invention, high-response, low-power-consumption and stable dynamic focusing is realized, and the visual adaptability is improved.

The invention provides an optical lens and near-to-eye display equipment. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens along the reverse direction of light transmission, the first lens has positive focal power, the light-out surface of the first lens is a convex surface or a plane, and the light-in surface of the first lens is a convex surface. The second lens has focal power, and the light emitting surface of the second lens is a convex surface; the third lens has positive focal power, the light-out surface of the third lens is a convex surface, and the light-in surface of the third lens is a convex surface; the fourth lens has negative focal power, and the light incident surface of the fourth lens is a concave surface; the fifth lens has positive focal power, and the light-emitting surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the light incident surface of the sixth lens is a concave surface; the seventh lens has focal power, the emergent surface of the seventh lens is a convex surface, and the incident surface of the seventh lens is a concave surface; and the range of the distance CTW between the light incident surface of the seventh lens and the image source on the optical axis is adjustable. The optical lens provided by the invention has the advantages of adjustable diopter and excellent imaging quality.

A wide angle zoom projection lens, which from the magnifying side to the narrowing side of the lens sequentially comprising: a first lens group with negative diopter, a second lens group, a third lens group with positive diopter, a fourth lens group with positive diopter, a fifth lens group with positive diopter, a sixth lens group with positive diopter, and an aperture in the lens; during the zooming, the first lens group and the sixth lens group are fixed, the second to fifth lens groups move along the optical axis to achieve changes in focal length; The front lens of the first lens group closest to the magnifying side of the lens is an aspherical lens with negative diopter to achieve a wide angle effect.

The invention belongs to the technical field of telescope manufacturing, and discloses a large-view-field telescope optical system which is characterized in that a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentaprism, a roof prism, a first eyepiece lens, a second eyepiece lens and a third eyepiece lens are sequentially designed from the object side to the image side in the optical axis direction. According to the optical system, only the ten lenses have diopters, the requirement for the field of view of 6.7 degrees under the 8-fold condition is met, and the exit pupil distance reaches 22.6 mm.

The invention provides a VR visual training method and system based on dynamic refraction adjustment, and is applied to the technical field of VR visual training, and the system comprises a display module, a focusing mechanism, a hybrid optical system and a main controller. The main controller generates a target diopter sequence changing along with time according to the training mode, and drives the optical lens group to move along the optical axis direction, so that the focal power of the system is physically changed; meanwhile, the virtual image depth is updated according to the diopter, and perspective parameters are adjusted and rendered, so that the position of the presented virtual image is consistent with the optical focus in real time; in the training process, the adjusting reaction speed and the adjusting lag amount are obtained through the clear recognition performance of the user on the sighting mark, the main controller conducts self-adaptive adjustment on the follow-up refraction change track based on feedback, and training stimulation is made to be matched with the instant adjusting ability of the user. A real, continuous and individualized adjusting stimulation environment can be constructed, and the effectiveness and safety of ciliary muscle training are improved.

The invention discloses a small vision detection device for eye examination, and particularly relates to the technical field of vision detection devices.The small vision detection device comprises a device bottom plate, a vision detection mechanism is arranged at the top of the device bottom plate and comprises a first moving plate, and the first moving plate is arranged at the top of the device bottom plate; the top of the first moving plate is fixedly connected with a moving mounting plate, and a display screen is mounted on the front side of the moving mounting plate. By arranging the vision detection mechanism and the adjusting mechanism, the comprehensiveness of vision detection is improved, the vision definition is detected, the type and degree of refractive errors such as myopia, hyperopia and astigmatism can be accurately diagnosed through a diopter test, whether a vision problem exists or not is determined, and the vision detection accuracy is improved. Meanwhile, some eye diseases possibly influencing vision can be indirectly found through intraocular pressure testing, retina injury and vision loss caused by too high intraocular pressure can be prevented by monitoring changes of the intraocular pressure, the examination effect is good, and vision detection is more comprehensive.

The invention belongs to the technical field of regenerative medicine, and provides a circular partitioned micro lens for cornea implantation, which comprises two areas, namely a first correction area and a plano area, preferably comprises three areas, namely two vision correction areas and a plano area, the two vision correction areas have the vision correction effect, and the plano area has the vision correction effect. The diopter of the plano area is 0D, the plano area is provided with a through hole, and the applicant summarizes and finds that the through hole is formed in the center of the micro lens for the partitioned cornea implantation, so that the phenomena of nebula and turbidity of the cornea after operation can be reduced. After the partitioned micro lens for cornea implantation provided by the invention is implanted, a patient can clearly see near objects and distant objects, so that clear vision is realized. The invention further provides application of the partitioned micro lens for cornea implantation in vision correction.

In some embodiments, a display system comprising a head-mountable, augmented reality display is configured to perform a neurological analysis and to provide a perception aid based on an environmental trigger associated with the neurological condition. Performing the neurological analysis may include determining a reaction to a stimulus by receiving data from the one or more inwardly-directed sensors; and identifying a neurological condition associated with the reaction. In some embodiments, the perception aid may include a reminder, an alert, or virtual content that changes a property, e.g. a color, of a real object. The augmented reality display may be configured to display virtual content by outputting light with variable wavefront divergence, and to provide an accommodation-vergence mismatch of less than 0.5 diopters, including less than 0.25 diopters.

The invention provides an out-of-focus lens microlens diopter measurement method, system, medium and device, and relates to the technical field of optical measurement, and the method comprises the steps: placing a to-be-measured out-of-focus lens on a rotary table; controlling a Z-axis motion guide rail to drive a line measurement sensor to move, and determining a path scanning zero point; the rotary table is controlled to rotate at a constant speed, and the X-axis movement guide rail and the Z-axis movement guide rail drive the line measurement sensor to move so as to obtain point cloud data of the upper surface of the to-be-measured out-of-focus lens; performing conversion, fitting and data extraction on the point cloud data to obtain a two-dimensional profile curve of each micro lens unit included in the to-be-measured defocus lens; and calculating the diopter of each micro-lens unit according to the two-dimensional profile curve of each micro-lens unit. According to the method, independent quantitative evaluation of the additional diopter of the microstructure is realized, and the defects that the macroscopic diopter and the microstructure diopter cannot be separated by a lensometer and the macroscopic diopter and the microstructure diopter are difficult to accurately disassemble in an existing non-contact technology are overcome.

The invention provides a miniature large-depth-of-field wide-angle high-definition lens, which relates to the technical field of miniature imaging and comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged from an object side to an image side. The first lens has positive diopter, an object side surface is a plane, and an image side surface is a concave surface. The second lens has negative diopter, and the object side surface and the image side surface are convex surfaces; the third lens has positive diopter, the object side surface is a concave surface, and the image side surface is a convex surface; the fourth lens has positive diopter, the object side surface is a concave surface, and the image side surface is a convex surface; the fifth lens has positive diopter, the object side surface is a concave surface, and the image side surface is a convex surface; the surface type of the second lens is an aspheric surface, and the surface types of the first lens, the third lens, the fourth lens and the fifth lens are spherical surfaces; according to the invention, high resolution can be realized, the imaging quality is good, the cost is low, miniaturization is realized, the depth of field of the lens is expanded, and the image definition in an effective depth of field range is improved.

The invention relates to the field of optical waveguide lenses, in particular to a universal AR optical waveguide lens which comprises a waveguide substrate and resin, the waveguide substrate is embedded in the resin, the waveguide substrate comprises a waveguide layer, a coupling input area and a coupling output area, and the coupling input area and the coupling output area are both connected to the outer wall of the waveguide layer. The coupling input area is arranged on the edge of the waveguide layer, and the coupling output area is arranged in the middle of the waveguide layer. The coupling input area guides a display light source into the waveguide layer, the waveguide layer guides light through transmission, refraction, reflection or diffraction, and the coupling output area guides the light to human eyes from waveguides to realize imaging. The resin plays a role in buffering and protecting the waveguide substrate, the waveguide substrate is implanted into the resin, standard optical waveguide lenses with various gradient diopters can be made, optical waveguide sheets can be customized according to personal eyesight conditions, and the optical waveguide lens is suitable for users with various eyesight.

In some embodiments, a display system comprising a head-mountable, augmented reality display is configured to perform a neurological analysis and to provide a perception aid based on an environmental trigger associated with the neurological condition. Performing the neurological analysis may include determining a reaction to a stimulus by receiving data from the one or more inwardly-directed sensors; and identifying a neurological condition associated with the reaction. In some embodiments, the perception aid may include a reminder, an alert, or virtual content that changes a property, e.g. a color, of a real object. The augmented reality display may be configured to display virtual content by outputting light with variable wavefront divergence, and to provide an accommodation-vergence mismatch of less than 0.5 diopters, including less than 0.25 diopters.

Systems include three optical elements arranged along an optical axis each having a different cylinder axis and a variable cylinder refractive power. Collectively, the three elements form a compound optical element having an overall spherical refractive power (SPH), cylinder refractive power (CYL), and cylinder axis (Axis) that can be varied according to a prescription (Rx).

The invention provides an optical lens and near-to-eye display equipment. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from a human eye entrance pupil side to an image source side along the reverse direction of light transmission, the first lens has positive focal power, and the light emitting surface of the first lens is a convex surface; the second lens has focal power, and the light emitting surface of the second lens is a convex surface; the third lens has negative focal power, the light-out surface of the third lens is a concave surface, and the light-in surface of the third lens is a concave surface; the fourth lens has positive focal power, and the light incident surface of the fourth lens is a convex surface; the fifth lens has positive focal power; and the range of the distance CTW between the light incident surface of the fifth lens and the image source on the optical axis is adjustable. The optical lens provided by the invention has the advantages of adjustable diopter and excellent imaging quality.