599 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.

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 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 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 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.

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.

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).

Provided in the present utility model is a projection lens. The projection lens comprises, in sequence from a first side to a second side, a first lens group having a negative refractive power, a stop, and a second lens group having a positive refractive power, wherein the first lens group comprises a first lens having a negative refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power, the first lens being an aspherical lens; and the second lens group comprises a fourth lens having a positive refractive power, a fifth lens having a negative refractive power, a sixth lens having a positive refractive power, a seventh lens having a positive refractive power, and an eighth lens having a positive refractive power, at least two of the fourth lens, the fifth lens and the sixth lens being cemented together to form a cemented lens. The present utility model solves the problem in the prior art of poor performance of projection lenses.

The invention discloses a large-target-surface high-resolution unmanned aerial vehicle lens and electronic equipment. The lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens from an object side to an image side. The first lens has negative diopter, the object side surface of the lens is a convex surface, and the image side surface of the lens is a concave surface; the second lens has negative diopter, the object side surface of the lens is a concave surface, and the image side surface of the lens is a concave surface. The invention provides an innovative optical design for solving the problem that an existing unmanned aerial vehicle lens cannot give consideration to light weight, high definition, large target surface, large aperture and large field angle. Through the glass-plastic mixed design, the use number of glass lenses is reduced, and meanwhile, the unmanned aerial vehicle lens with a large target surface, a small size and high resolution is realized by matching with a sensor with a 1 / 0.98 inch target surface. The lens can meet the high resolution requirement of more than five million pixels, and the imaging quality is remarkably improved.

The invention provides a near-to-eye display device. The near-to-eye display device comprises a waveguide, a coupling-out grating, a first zoom module and a control module. The waveguide comprises a first surface and a second surface opposite to the first surface, and the waveguide is used for conducting image light. The coupling-out grating is arranged on the first surface and used for receiving and coupling out the image light emitted from the waveguide. The first zoom module is arranged on the second surface and located on the light path of the image light and the ambient light, and the first zoom module is used for receiving the image light and the ambient light and transmitting the image light and the ambient light to human eyes. The control module is used for changing the diopter of the first zoom module so as to adjust the focusing positions of the ambient light and the image light.

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.

The invention relates to the technical field of glasses fitting, and discloses an intelligent AI full-automatic glasses fitting debugging system, which comprises the following steps: a face data acquisition and pupil positioning module, a dynamic optical adjustment module, an AI intelligent decision and adaptive optimization algorithm module, a visual function evaluation and dynamic adjustment module, and a data interaction and user feedback module. An intelligent AI full-automatic glasses fitting and debugging method comprises the following steps: acquiring facial geometric data and pupil positions of a user, and calculating pupil distance and pupil height parameters; the diopter and pupil height are adjusted based on facial data, and a liquid crystal adjustable lens and a mechanical translation prism are adopted for dynamic optical adjustment. The AI full-automatic glasses fitting technical scheme based on multi-modal data fusion is adopted, the real-time high-precision glasses fitting adjustment effect is achieved, the problems of precision deviation and tedious operation caused by manual intervention are solved, and the rapid and automatic whole-process fitting process is achieved.

The invention discloses a spectacle lens and a design method thereof. The spectacle lens comprises a lens body, wherein the lens body comprises a first surface arranged towards the retina of a human eye; the lens body is provided with an optical center which coincides with the geometric center of the first surface. The first surface comprises a retina refraction area, a retina periphery refraction area and a refraction correction area which are sequentially arranged from the optical center to the edge of the lens body; the retinal diopter, the peripheral retina diopter, and the diopter correction region are disposed around the optical center, respectively, and cooperate together to intervene in retinal imaging quality within the pupil range. According to the retina peripheral characteristics of the wearer, the micro-structure lens more adaptive to the retina of the human eye is designed, the retina peripheral diopter of the human eye can be more accurately obtained, and the progress of ametropia is efficiently intervened according to the characteristics of the retina peripheral diopter of the human eye.

The invention discloses a multi-parameter eye axis measurement and data processing system based on a self-mixing vernier effect, and relates to the field of optical fibers. The low-coherence light source is divided into optical fiber reference light and optical fiber measuring light through the first coupler; the optical fiber measuring light passes through a circulator and a collimator to output space measuring light, and different parts of an eyeball are scanned through a zoom lens; the optical fiber measuring light enters the optical fiber delay line through the circulator and the wavelength division multiplexer, and is output from the second circulator after being reflected; the high-coherence light source is reflected by the wavelength division multiplexer and the optical fiber delay line, self-mixing interference is generated at the phase shift grating, and the low-coherence peak spacing is calibrated; the reflected measuring light respectively outputs low-coherence light through a secondary circulator, generates interference in a second coupler and then is sent to a balanced photoelectric detector; and the spatial light reflected by the eyeballs is reflected to the Hartmann micro lens group and then is focused to collect a Hartmann array diagram to calculate the diopter. According to the scheme, the signal-to-noise ratio of data calibrated and measured by using the optical fiber and the self-mixing interference method is higher, and the data is more accurate.

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

A multi-focus adjustable lens-based dynamic visual perception training device disclosed by the present invention comprises a rear supporting shell and a mounting shell, the rear supporting shell is connected with the mounting shell through a connecting assembly, two mounting frames are symmetrically and fixedly mounted on the inner wall of the mounting shell, rotating shafts are rotatably mounted in the mounting frames, and the rotating shafts are connected with the rear supporting shell through a connecting assembly. A sliding table is movably mounted between the mounting frames and the rotating shaft, two mounting frames are arranged on the side wall of the sliding table, and two multi-focus inner lenses are arranged at the bottom of the mounting shell; through the combined action of the high-precision stepping motor, the rotating shaft, the sliding table, the first mounting hole and the second mounting hole, the multi-focus inner lens can be mounted at the bottom of the sliding table through the first mounting hole, the second mounting hole and a bolt, the rotating shaft is driven by the high-precision stepping motor to rotate, then the sliding table can be driven to move, and then the multi-focus inner lens is driven to move. Therefore, the total diopter of the superposition of the multi-focus inner lens and the multi-focus outer lens is adaptive to the myopia degree of the child.

Vehicle window glass and a vehicle. Vehicle window glass (100) comprises an information acquisition area (101); the information acquisition area (101) comprises an optical transmission area (103) and a shielding area (104); a first shielding layer (20) and at least one second shielding layer (30) are arranged in the shielding area (104); the material of the second shielding layer (30) is different from that of the first shielding layer (20); at least one transition area (105) is arranged between the first shielding layer (20) and the optical transmission area (103); and one part of each second shielding layer (30) covers the corresponding transition area (105), and the other part of each second shielding layer (30) covers part of the surface of the first shielding layer (20). The vehicle window glass not only can ensure the size range of an optical transmission area necessary for a sensor, but also implement isolation of optical distortion outside the optical transmission area, such that the diopter of the optical transmission area satisfies the use requirements of the sensor, the image acquisition quality of the sensor is effectively improved, the detection quality of the sensor is improved, and the use requirements of a camera having high precision and a narrow horizontal field of view can be satisfied.

Disclosed in the present invention is a single-display binocular diopter-adjustable near-eye display system, comprising a display, a beam splitter prism, a first imaging display unit, and a second imaging display unit. The display is used for emitting imaging light and moving relative to the beam splitter prism to achieve diopter adjustment. The beam splitter prism is for splitting the imaging light emitted from the display into two paths to be incident on the imaging display units in a one-to-one correspondence manner. The imaging display units have one-to-one correspondence to human eyes, and each comprise a first imaging lens unit, a planar reflector, and a curved mirror, wherein the planar reflector is inclined relative to an optical axis of the first imaging lens unit, the mirror surface of the curved mirror away from the human eyes is coated with a light splitting film, and the mirror surface of the curved mirror close to the human eyes is coated with an anti-reflection film. According to the system, binocular viewing is achieved using a single display, helping to reduce the costs, achieve miniaturization and light weight, and achieve a larger eyebox range and field of view angle; in addition, the imaging quality is excellent, and the requirements of people with different vision can be met.

A method for characterizing optical elements of a lens element adapted for a person is presented, the lens element including: a holder including a refraction area having a refractive power based on a prescription for correcting an abnormal refraction of an eye of the person; and a plurality of optical elements configured so that at least one of slow down, retard or prevent a progress of the abnormal refraction of the eye of the person. A two-dimensional representation of the local optical power of the lens element is obtained using a fringe deflectometry method and the images used for the fringe deflectometry method consist of pixels smaller than or equal to 0.05 mm×0.05 mm.

The invention provides a fundus OCT imaging diopter adaptive matching method and device, and relates to the technical field of retina imaging, and the method comprises the following steps: detecting pupil positions in real time, automatically tracking pupils, and controlling a reference arm motor and a sample arm motor to move to initial positions; a reference arm motor is controlled to move, meanwhile, a retina structure in an OCT image is detected through a deep learning algorithm, and the eye axis length of the testee is automatically matched; the reference arm motor and the sample arm motor are controlled to move synchronously, the retina focusing position is found by calculating the composite information entropy of the OCT image, and the diopter of the testee is automatically compensated; and detecting and adjusting the position of the retina in the image by using a deep learning algorithm to cover retina imaging with a large view. According to the method, the OCT imaging device is automatically controlled, an automatic solution is provided for eye ground screening of people of multiple age groups and various ametropia groups, the overall image quality collected by OCT is improved, and the operation simplicity and the imaging speed are remarkably improved.

The invention provides a dynamic diopter detection method and system based on a wearable module, and relates to the field of myopia prevention and control, and the method comprises the steps: exciting light rays through a light source part of the wearable module to enable the light rays to enter eyeballs of a wearer, and obtaining first reflection light rays through diffuse reflection and refraction of the light rays through a retina and a crystalline lens; acquiring first video information including the first reflected light through an optical axis of a camera module of the wearable module; the first video information is uploaded to a server for training, a target model is obtained, second video information is collected and uploaded to the server, and a crystalline lens image is segmented from the second video information; and analyzing the crystalline lens image based on the target model to output diopter change trend information. After the target model corresponding to the wearer is obtained, the second video information continues to be collected, the crystalline lens image is segmented, diopter change trend information can be obtained by analyzing the crystalline lens image through the target model, and therefore the myopia condition of the wearer is obtained.