530 results about "Eye lens" patented technology

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 present invention relates to a snap-fit structure for spectacle lens and temple, which comprises a spectacle lens with a buckle hole on a side thereof, and a temple with a lens assembly element. A latching member is pivotally connected in a groove of the lens assembly element. When the spectacle lens and the temple are assembled, the side of the spectacle lens is correspondingly engaged with an embedded opening of the lens assembly element, so that the buckle hole of the spectacle lens is put between an elastic piece and a pressing piece of the latching member, and is coupled with a block of the elastic piece correspondingly. When the spectacle lens is separated from the temple, the pressing piece of the latching member is pressed to deflect the latching member by an angle, so that the elastic piece is separatable from the buckle hole of the spectacle lens.

The invention discloses a peripheral retina data-based microstructure lens and a design method, and the lens comprises a mother lens which is provided with a first surface facing the retina of a human eye; the first surface comprises a central luminosity area, a luminosity modulation area and a luminosity compensation area which are arranged in sequence; the central luminosity area, the luminosity modulation area and the luminosity compensation area are respectively arranged around the optical center in a concentric circle mode; the luminosity modulation area is provided with a plurality of first areas which are divided into equal areas, the luminosity compensation area is provided with a plurality of second areas which are divided into equal areas, and the first areas and the second areas are adjacent in the first direction and jointly matched so as to be used for intervening the imaging quality of the retina within the pupil range. Peripheral retina data is adopted to carry out design compensation on spectacle lenses, so that a more accurate and more personalized correction mode is realized, and an optimal management method for inhibiting ametropia can be selected according to the actual condition of a wearer.

The invention discloses an LCOS optical illumination system for an AR-HUD projection unit, and belongs to the field of photoelectric illumination and display technologies. The system comprises an illumination light source, a collimating lens, a fly-eye lens, an optical diffuser, a wavelength selective light combination element, a polarized light conversion device, a relay lens, a PBS prism and an LCOS display chip. The illumination light source is a three-color LED light source and is composed of a red light LED, a green light LED and a blue light LED. After red primary light, green primary light and blue primary light are collimated by the collimation system, the light parallelism is optimized, the collimated light sequentially passes through the light diffusion element to optimize the light field uniformity and the fly-eye lens to eliminate the non-uniform illumination, then is unified into a single linear polarization state by the polarized light converter, is shaped by the relay system and keeps the light beam transmission quality, and finally is transmitted to the light source. And polarization state separation and light combination are realized through the PBS prism, and finally, the light is accurately coupled to the LCOS display chip, so that high-efficiency polarization state matching and imaging quality optimization are completed. According to the HUD-PGU system, the illumination brightness of the whole system is improved, the color reducibility of the system is improved, the illumination uniformity of system imaging is improved, the light energy utilization rate of the system is improved, meanwhile, the size of the HUD-PGU is reduced, and the manufacturing cost is reduced.

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 spectacle lens with a hexagonal cylindrical microstructure on the surface, and relates to the technical field of optical lenses, and the spectacle lens comprises a lens main body which is divided into a central optical area, a hexagonal cylindrical microstructure distribution area and a peripheral optical area from inside to outside in sequence by taking the geometric center of the lens main body as a circle point, the hexagonal cylindrical surface microstructure is arranged on the surface of the lens main body and comprises a plurality of regular girdle cylindrical surface microstructures and inverse girdle cylindrical surface microstructures which are concentrically arranged, the regular girdle cylindrical surface microstructures and the inverse girdle cylindrical surface microstructures are alternately arranged in the radial direction, and irregular astigmatism generates high-order disturbance on incident wave surfaces of human eyes. The method is mainly suitable for teenagers with fast myopia development, and low-order and high-order aberrations and myopia defocus can be alternately introduced into the peripheral retina view field, so that the effect of preventing and controlling the myopia of the teenagers is improved.

The utility model relates to a spectacle lens and a pair of frame spectacles. The spectacle lens comprises an optical region and a control region, and the optical area can provide a correction effect on the vision of the ametropia patient. The control area surrounds the central optical area of the spectacle lens and comprises control subunits which are sequentially arranged in the circumferential direction, each control subunit is provided with a plurality of first lens arrays and second lens arrays which are parallel to one another, each first lens array comprises a plurality of first lenses which are attached to one another, and each second lens array comprises second lenses which are attached to one another. And an included angle which is not less than 30 degrees is formed between a straight line section limited by each first lens array and an adjacent side on the triangle. The spectacle lens can achieve a long-term effective ametropia prevention and control effect.

Method for checking the centration of at least one spectacle lens, comprising the steps: - arranging the at least one spectacle lens in a recording field of an image recording device (2); - recording at least one image of the spectacle lens by means of the image recording device (2); - Determining positions of functional engravings (11) of the spectacle lens in the recorded image, wherein, in order to determine the position of the functional engravings (11), a structure is created on a side of the spectacle lens facing away from the image recording device (2), which structure is at least partially imaged through the spectacle lens in the recorded image; - Determining at least one lens contour of the spectacle lens in the recorded image; and - Check the centration of the lens taking into account: - the determined position of the functional engravings (11), - the determined glass contour and - a previously known, user-dependent target geometry of the centering.

The invention relates to an electrochromic lens manufacturing method and an electrochromic lens, and aims to solve the problem of complex manufacturing process of an electrochromic AR spectacle lens and improve the service life and durability of the electrochromic AR spectacle lens. The manufacturing method comprises the steps that dense penetrating cutting holes are formed in a base material in a cutting mode, then the base material is tempered, etching and thinning can be conducted before tempering, then a functional layer is plated on the surface of the whole base material through evaporation coating or sputter coating, and the functional layer comprises a first conductive layer, an electrochromic layer, an ion conduction layer, an ion storage layer, a second conductive layer and the like. And then splitting at the position of the cutting hole to form small mirror surface pieces, and finally performing electrode connection and assembling to form the lens. The functional layers can be formed into different types, so that flexible matching during assembly is facilitated. The invention also provides the electrochromic lens obtained by the method. The manufacturing process is simplified, the production efficiency is improved, and the cost is reduced; the lens strength and impact resistance are enhanced, and the weight is reduced; and the functional layer is flexible in design, so that the photochromic performance and the reliability of the lens are improved.

The present invention provides a multi-aperture lobster-eye optical system. Compared with the traditional lobster-eye optical system, the new lobster-eye optical system significantly increases the number of light spot arms. This improvement significantly reduces the difficulty of imaging positioning in the edge field of view and improves the accuracy and reliability of positioning. In addition, a central aperture optical subsystem is placed in the center to image the target object, which can improve the problem that the lobster-eye optical system itself cannot clearly image the target. Overall, the diamond-shaped lobster-eye lens of the present invention shows obvious advantages in both imaging performance and practical applications. It not only significantly reduces the difficulty of imaging positioning in the edge field of view and improves the accuracy and reliability of positioning, but also can maintain the original imaging clarity and detail performance when the angle between the diamond-shaped lobster-eye lens and the detector changes, and the imaging quality is highly stable.

The embodiment of the application discloses a video display method, a display device, a storage medium and a television. The video display method comprises the following steps: acquiring a target 3D signal, wherein the target 3D signal comprises a left eye frame and a right eye frame; controlling a 3D glasses to cyclically open a left eye lens and a right eye lens; when the left eye frame in the target 3D signal is displayed on a display screen, the 3D glasses is controlled to open the left eye lens; when the right eye frame in the target 3D signal is displayed on the display screen, the 3D glasses is controlled to open the right eye lens; and the opening frequency of the left eye lens and the opening frequency of the right eye lens are equal to half of the current refresh rate of the display screen. On the one hand, the television has a higher refresh rate, supports a larger size display, has a larger visual angle, and thus the 3D visual experience of a user can be improved; on the other hand, a user only needs to wear 3D glasses to better experience the 3D stereoscopic display effect through the television without spending a high cost to purchase a VR hardware device.

A head-mounted device may have eyeglass lenses. Each eyeglass lens may have an optical system with inner and outer lens elements and a waveguide and light modulator between the inner and outer lens el

Methods of reducing oxidative damage to an eye of a subject are provided. Aspects of the method include intravitreal injection an antioxidant composition consisting essentially of a non-reducing sugar or a hydrate thereof. In some embodiments, the non-reducing sugar is trehalose. The methods can further include surgical removal of at least a portion of the subject's vitreous humor during a vitrectomy. Also provided are ophthalmic compositions, kits and pre-loaded injection devices for use in vitrectomy surgery which find use in the subject methods.

The invention provides a method for applying a pattern (2) on an ophthalmic lens substrate (1). The method comprises: creating a low contact angle surface on a preselected portion (4) of the surface of the ophthalmic lens; and providing the ophthalmic lens substrate (1) with a hard coating composition (70) and optionally a primer coating composition.

The present invention provides an eyeglass lens and its related techniques, the eyeglass lens including: a base region that causes a light flux that has entered from an object-side face to exit from an eyeball-side face, and to enter an eye and converge at a position A on a retina; and a plurality of defocus regions that are in contact with the base region, in which a light flux that passes through at least part of each defocus region is incident on the position A as diverging light, wherein a refractive power in the defocus regions increases in a direction from a center portion to a peripheral portion.

The utility model discloses an optical machine module and a near-to-eye display device. A lighting assembly and a lighting and imaging multiplexing assembly of the optical machine module are located on the two sides of a waveguide sheet. Illuminating light emitted by the illuminating assembly is transmitted in the first direction, transmitted through the waveguide sheet, the fly-eye lens, the first polaroid and the lens set in sequence, then incident to the surface, close to one side of the lens set, of the light modulator and modulated into imaging light through the light modulator to be reflected, and the imaging light is transmitted through the lens set and the second polaroid in the second direction and then emitted to the other side of the light modulator. And after total reflection transmission in the waveguide sheet, the light is emitted from the exit pupil area of the waveguide sheet to the human eyes, and the included angles between the first direction and the normal of the light modulator and between the second direction and the normal of the light modulator are the same. According to the optical machine module provided by the utility model, the volume of the optical machine module can be reduced on the premise of ensuring the performance of the optical machine.

A computer-implemented method generates design data for manufacturing a single vision spectacle lens having a prescribed power and an edge contour fitted to a predefined spectacle frame. Prescription information regarding the prescribed power for the spectacle lens and geometrical information regarding the predefined spectacle frame is provided. Moreover, a geometrical profile of at least one surface of the spectacle lens is optimized. Further, a spatial variation of a refractive index of the spectacle lens is optimized, wherein optimizing the geometrical profile of the surface of the spectacle lens and optimizing the spatial variation of the refractive index of the spectacle lens are carried out such that an optical power of the spectacle lens corresponds to the prescribed power and an edge thickness of an edge contour of the spectacle lens fitted to the geometrical information regarding the predefined spectacle frame varies by 0.5 mm or less over the edge contour.

The invention discloses a method for designing a mixed type boundary contour line of a progressive multi-focus ophthalmic lens, and belongs to the field of design of progressive multi-focus ophthalmic lenses. The method comprises the following steps: constructing a Laplacian equation, and selecting a mixed rectangular boundary as a boundary of the Laplacian equation; two nodes with adjustable positions are arranged on the right side edge of the second rectangular boundary; solving a Laplacian equation for the second rectangle by adopting a finite element method, and carrying out interpolation to obtain a contour line numerical matrix solution of the second rectangle; and combining the contour line numerical solutions of the first rectangle, the second rectangle and the third rectangle to obtain a contour line function numerical matrix solution of the hybrid rectangular region. According to the invention, the contour line mixed type boundary design method is utilized to greatly improve the use range of the far vision area and the near vision area of the ophthalmic lens again, reduce the astigmatism area and improve the optical performance of the lens; the contour line mixed type boundary design method provided by the invention can also be applied to the personalized design aspect of progressive multi-focus spectacle lenses.

1. Name of the product in this design: Eyeglasses frame. 2. Purpose of this design: For human wear or installation of eyeglass lenses. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to a method for calculating a digital twinning of an ophthalmic lens having a curved lens surface in order to manufacture the ophthalmic lens using the digital twinning, said digital twinning of an ophthalmic lens comprising a layer stack having individual layers, characterized by the following steps:-determining said layer stack, such that the form of an interface of individual layers replicates the curved lens surface of the digital twin.

The utility model provides an eye crystal personal dosimeter which comprises a clamping ring used for clamping a head, the clamping ring is provided with two end portions, at least one end portion is connected with a rotating handle in a rotating mode, an installation groove is formed in the outer side of the free end of the rotating handle, the installation groove is detachably connected with a sealing cap, and the sealing cap is fixedly connected with the clamping ring. The thickness of the inner side of the end, connected with the clamping ring, of the rotating handle is reduced at the end, a rotating shaft is arranged on the inner side of the end, a limiting piece is arranged at the end of the rotating shaft, a flange protruding outwards is arranged at the end of the clamping ring, and a bayonet allowing the rotating shaft to enter and rotate is formed in the flange. The problems that in the prior art, wearing experience is poor, falling off is prone to occurring, sight is affected, wearing of the protection device is hindered, and wearing steps are tedious are solved.

Self-administered tests for a broad range of visual functions use angular indications on a peripheral structure selected by the test subject to indicate the position of a visible feature of a stimulus. The tests are performed on a computer and use artificial intelligence to adapt and personalize the range of difficulty and type of test to the subject's vision issues. The tests can be used for diagnosis in the fields of optometry, ophthalmology, neurology, psychology, and psychiatry. The technology also can be used to determine a subject's optical prescription in combination with the use of ophthalmic lenses that are provided to the test subject.

The invention provides a method for producing an optical element of a user-customized ophthalmic lens for an image-generating display device positionable on the head of a user, the method comprising the following steps: A) producing a plurality of substrate stacks (25) of a first variant and a plurality of substrate stacks (25) of a second variant, the substrate stacks (25) of all variants comprise in each case a waveguide (11) having a first side (16) and a second side (17) and a first lens (20) connected to the first side (16), the substrate stacks (25) of the same variant have in each case the same optical property, and the substrate stacks (25) of different variants differ in at least one predetermined optical property; b) producing a customized lens (21) for the user based on the visual impairment of the user and based on the selected substrate stack variants; and C) providing a selected variant of the substrate stack (25) and the produced custom lens (21) in order to be able to connect the produced custom lens (21) with the provided substrate stack (25) in order to produce the ophthalmic lens (3) customized for the user.

The invention relates to a spectacle lens for a display device (1) which can be placed on the head of a user and which generates an image, wherein the spectacle lens (3) is of multi-shell construction and has a channel shell (13), in which the light guiding channel (21) extends, and an inner shell (25), wherein the inner shell (25) takes the form of a Fresnel lens (25) with negative refractive power, wherein the Fresnel lens (25) has a first lens (31) with a Fresnel-patterned surface (33), which faces the channel shell (13), and a second lens (32), wherein the Fresnel-patterned surface (33) has alternately curved active surfaces (34) and interfering flanks (35) connecting the curved active surfaces (34), wherein the Fresnel-patterned surface (33) is configured in such a way as to be free of overhang, wherein the second lens (32) fills the Fresnel-patterned surface (33) in a form-fitting manner, and wherein the first lens (31) has a lower refractive index than the second lens (32).

The present invention discloses an anthropomorphic eye lens, comprising: a lens assembly, comprising, from the light information projection end to the image reception end, first through fourteenth lenses, each of which is a spherical lens with optical power; and an aperture, located at the light information projection end of the first lens. The distance between the aperture and the first lens on the optical axis, denoted as ST, satisfies the following conditions: 12 mm ≤ ST ≤ 13 mm. The lens assembly of the anthropomorphic eye lens comprises fourteen lenses, simplifying its structure and reducing its processing complexity, assembly steps, and adjustment difficulty.

Transparent organic light-emitting diodes (OLEDs) can be used as light-emitting pixels in a near-eye display for augmented reality applications. The light from these pixels can be switchably tuned and / or steered with tunable beam-steering and focusing elements, also called tunable micro-lenses. These tunable micro-lenses are arranged in an array and mated to the array of pixels, for example, by embedding in a spectacle lens. The tunable micro-lenses use fast-switching half-wave plates to selectively focus and / or tilt light from the pixels. By switching the light from the pixels between resolvable positions / angles at a rate faster than the flicker fusion threshold (e.g., 60 Hz), the tunable micro-lenses can effectively double the apparent resolution of the near-eye display. And by switching between focusing and non-focusing states at the same rate, the tunable micro-lenses can effectively superimpose the virtual images from the pixels on the real-world image visible through the pixels.

The present invention provides a spectacle lens for regulating the axial growth of adolescents' eyes. The spectacle lens comprises a first refractive area providing a first diopter for correcting refractive errors; and a second refractive area focusing light on a location other than the retina and providing one or more second diopters different from the first diopter. The second refractive area is provided with a plurality of interconnected microlenses. The spectacle lens can effectively regulate the axial growth of adolescents' eyes, thereby inhibiting the progression of refractive errors.

An ophthalmic lens operable to protect the eye from harmful ultraviolet and high energy visible wavelengths of light and methods for producing the same.

The invention relates to a dodging assembly, a laser module and laser equipment. The dodging assembly comprises an installation supporting plate, a support and a fly-eye lens. The bracket is arranged on the mounting supporting plate; the fly's-eye lens is arranged on the support, the support can drive the fly's-eye lens to move relative to the installation supporting plate in the first direction, and the first direction is parallel to the axial direction of the fly's-eye lens. According to the dodging assembly, parameter differences such as light beam divergence characteristics and laser chip spacing of laser assemblies of different specifications can be compensated to adapt to the laser assemblies of different specifications, the adaptability of the dodging assembly is improved, the displacement of the fly-eye lens can be compensated, the light beam convergence or divergence angle is optimized, a flexible debugging means is provided for the fly-eye lens, and the debugging efficiency is improved. And the stability and the light beam quality of the fly-eye lens are improved.