552 results about "Spectacle lenses" patented technology

A method for designing a spectacle lens and a related technique thereof, 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, wherein a reference model, decenter model, and tilt model are prepared as the multiple model; a sensitivity calculation step of calculating a decenter 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 which is a curvature of a surface in a region where the on-retinal non-convergence region is not provided on an object-side surface is taken as x-axis, and the decenter and tilt sensitivities are taken as y-axis, and an intersection of a plot of the decenter sensitivity and the tilt sensitivity is taken as the balance solution.

The present disclosure is directed to methods for manufacturing ophthalmic lenses utilizing a freeform process, the method comprising: machining a lens blank, semi-finished lens blank and / or an intermediate ophthalmic lens precursor to form a surface of the spectacle lens with at least a portion of the surface comprising a curvature for the correction of the myopic prescription of the wearer; machining a pattern of a plurality of optical elements and / or spaces therebetween on the surface of the spectacle lens suitable for delivering an effective optical signal to the retinal receptors of a progressive myope to slow, significantly slow, stop and / or shorten / regress the progression of axial eye length growth; and / or polishing the surface of the spectacle lens; wherein, after polishing the spectacle lens, at least one of the plurality of optical elements may have a relative surface elevation change per millimeter interval substantially greater than at least a portion of the prescription surface over a comparable interval. The present disclosure is also directed devices and systems manufactured using the described manufacturing methods.

The invention relates to the field of optical lens coatings, and particularly discloses a preparation method of an antifouling and antibacterial spectacle lens coating. The preparation method of the antifouling and antibacterial spectacle lens coating comprises the following steps: depositing a silicon dioxide substrate on the surface of a lens through plasma enhanced chemical vapor deposition treatment; the preparation method comprises the following steps: dispersing nano-graphene and nano-silver particles in an ethanol solvent, adding a silane coupling agent to form a homogeneous suspension, loading the suspension on the surface of a silicon dioxide substrate through a spin-coating method, and carrying out heat treatment curing to form an antibacterial layer, with the loading amount of nano-silver being less than or equal to 0.5 wt%; and etching the surface of the antibacterial layer by adopting a reactive ion etching method, and then grafting perfluorooctyltriethoxysilane on the etched surface at 80-100 DEG C by adopting a vapor deposition method to form the hydrophobic layer. The preparation method of the antifouling and antibacterial spectacle lens coating has the advantages of being antibacterial, antifouling and high in durability.

The present disclosure generally relates to a lens that provides a stop signal for myopia over a substantial portion of a spectacle lens that is being used by a viewer. The present disclosure relates to an apparatus, method, and / or system for applying a stop signal for eye development using a spectacle lens in combination with an array of microlenses. The present disclosure also relates to an apparatus, method, and / or system for modifying incident light through a spectacle lens that utilizes color cues to slow the rate of myopia progression. The present disclosure relates to an apparatus, method, and / or system for applying a stop signal for eye development using a spectacle lens in combination with a refractive optical element and / or a diffractive optical element that provides conflicting or opposing optical signals at wavelengths between 510 nm and 610 nm.

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.

A method for designing a digital twin of a coated spectacle lens with a computer for the purpose of a use of the digital twin for manufacturing a coated spectacle lens and a method for manufacturing a coated spectacle lens are provided. The spectacle lens contains a predefined structure or a plurality of predefined structures. The predefined structure or structures are formed by selectively curing the coating composition with a laser beam.

A method for producing spectacles lenses (10), in which method, starting with a blank which has predetermined surface geometries on a front face (12) and a rear face (14) remote therefrom and having a contoured edge (16) therebetween, a finished part is formed by material removal and / or deposition. In a step of generating an optically active shape of the spectacles lens, the semifinished product is shaped, which has an edge region (18) in which an orientation structure (20) is also made. For at least one subsequent step of further machining, the location and position of the semifinished product in space are clearly identified and established with the aid of a positioning receptacle (22) arranged in a defined manner in space.

Devices and / or systems are used to modify the incoming light through spectacle lenses that utilize at least one auxiliary or regional optical element, to provide extension or elongation of the depth of focus for a myopic eye. Methods are used to correct myopia and control or reduce the rate of myopia progression utilizing extension of the depth of focus provided by the at least one auxiliary or regional optical element configured within, or in conjunction, combination, or juxtaposition with spectacle lenses. An axicon, a light sword element, or a peacock eye element is provided within the regional optical element or a sub-lens. A plurality of axicons, light sword elements or peacock eye elements may be configured within, or in conjunction, combination, or juxtaposition with spectacle lenses.

The invention relates to a lens element (10), in particular for a spectacle lens, a contact lens or an intraocular lens, intended to be worn by a wearer, comprising:-at least a first zone (12) having a dioptric region having a front face and a rear face, the dioptric region having a refractive power based on a prescription of the wearer's eyes; -at least one microstructured second zone (13) outside said first zone (12) and configured for myopia or hyperopia control, said microstructured second zone (13) being characterized by a measurable surface spatial power spectral density PSDmeasure (f) such that, within a spatial frequency range between 0.3 mm-1 and 10 mm-1, formula (I), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula (II), formula PSDnom is a nominal function defined by a Hann window, and f is spatial frequency. # imgabs0 #

The invention relates to the technical field of VR glasses, and discloses a pair of head-mounted VR glasses, which comprises a glasses body, a fixed frame is arranged on the glasses body, a partition plate is arranged in the glasses body, the top of the partition plate is connected with the fixed frame, glasses lenses are fixed on the partition plate, a movable cavity is formed in the fixed frame, and the movable cavity is internally provided with a movable cavity. A demisting assembly is arranged in the movable cavity, and the demisting assembly is used for carrying out demisting treatment on the spectacle lenses by blowing air; the demisting assembly comprises a positioning seat, the positioning seat is fixed on the fixed frame, a first sliding groove is formed in the fixed frame, a movable seat is connected to the first sliding groove in a sliding mode, and a supporting plate is arranged on the movable seat; according to the technical scheme, by arranging the demisting assembly, when the VR glasses are used, the surfaces of the glasses lenses can be subjected to demisting treatment, and the transparency of the glasses lenses can be kept, so that the watching effect is improved, and the user experience is improved.

To provide technology in spectacles with spectacle lenses that exhibit a myopia progression inhibiting effect or a hyperopia mitigating effect, for ensuring peripheral vision while inhibiting habituation of upward or downward gazing, thereby facilitating attaining the myopia progression inhibiting effect or hyperopia mitigating effect.SOLUTION: Spectacles have spectacle lenses that exhibit a myopia progression inhibiting effect or a hyperopia mitigating effect. The spectacle lenses each have: a central clear region which achieves prescribed refractive power for a wearer and includes an eye point of the spectacle lens; an annular functional region which has a portion having different refractive power than the prescribed refractive power and surrounds the central clear region; and an annular peripheral clear region which achieves the prescribed refractive power and surrounds the functional region; where, on the vertical straight line passing through the eye point, the width of the peripheral clear region in the vertical direction is smaller than the circle equivalent diameter of the central clear region.SELECTED DRAWING: Figure 1

The invention provides a method 100 for separating different polymeric spectacle lens materials in a mixture comprising at least two different polymeric spectacle lens materials by separating at least one polymeric spectacle lens material of the at least two different polymeric spectacle lens materials by using their different physical behavior and / or chemical behavior, wherein the at least two different polymeric spectacle lens materials are selected from the group consisting of polyallyl carbonate, polyurea, polyurethane, polyurethane / polyurea, polycarbonate, polyepisulfide and polythiourethane. The invention further provides a method for separating at least one polythiourethane from a mixture comprising at least two different polythiourethanes by thiolysis.

The utility model discloses a spectacle lens chamfering mechanism, which belongs to the technical field of spectacle lens processing and comprises a shell, a turntable is rotatably mounted on the inner top wall of the shell, sleeves are uniformly arranged at the bottom of the turntable, springs are fixed in the sleeves, sleeve rods are fixed at the bottom ends of the springs, abutting blocks are hinged to the bottom ends of the sleeve rods, and the abutting blocks are hinged to the inner top wall of the shell. A motor is installed on the inner bottom wall of the shell, a tray is fixed to an output shaft of the motor, and a supporting rod is fixed to the middle of the top of the tray. Through cooperative use of the shell, the rotating disc, the sleeve, the spring, the sleeve rod, the abutting block, the motor, the tray, the supporting rod, the supporting block, the hydraulic rod, the reinforcing block, the hydraulic cylinder and the grinding machine, the placement angle of the spectacle lens can be adjusted according to different use requirements, the purpose of conveniently chamfering the spectacle lens at different angles is achieved, manual adjustment is not needed, time and labor are saved, and the working efficiency is improved. The operation is convenient, so that the practicability of the spectacle lens chamfering mechanism is improved.

The invention discloses a glasses lens edge grinding machine and belongs to the technical field of edge grinding machines, the glasses lens edge grinding machine comprises a machine body and a connecting piece, an operation cavity is formed in the machine body, the connecting piece comprises a connecting block, a mounting groove is formed in the inner wall of the operation cavity, a mounting rod comprises a fixing rod fixed in the mounting groove, and a movable sleeve is hinged to the end, close to a clamping rod, of the fixing rod; a moving rod is arranged in the moving sleeve in a penetrating mode, and a clamping block used for being connected with the connecting block is installed at the end, close to the clamping rod, of the moving rod; the machine body is slidably provided with a mounting sleeve in the length direction of the machine body through the mounting groove, the mounting sleeve is arranged on the periphery of the mounting rod in a sleeving mode, an ultrasonic cleaning box is installed on the inner bottom face of the operation cavity, and a rotating assembly used for driving the moving rod to rotate downwards and a driving assembly used for pushing the moving rod to move downwards are arranged in the machine body. The lenses enter the ultrasonic cleaning box to be cleaned after edge grinding is completed, the possibility that chippings are attached to the lenses is reduced, and therefore the possibility that the lenses are scratched and abraded is reduced.

A coating composition for an optical article containing a photochromic compound and two or more (meth)acrylates, the two or more (meth)acrylates containing a non-cyclic difunctional methacrylate having a molecular weight of 500 or more and a non-cyclic tri- or higher functional (meth)acrylate.

The utility model relates to the field of spectacle lens coating, and discloses coating equipment for spectacle lenses, which comprises a main body, a mounting cavity is formed in the main body, a rotary drum is rotatably arranged in the mounting cavity, and cleaning liquid is placed in the rotary drum; a power mechanism is mounted in the mounting cavity and is in transmission connection with the rotary drum; a fixed plate is in sealed running fit in the rotary drum, the fixed plate is coaxially and fixedly connected with a fixed column, and the fixed column penetrates through the rotary drum and is fixedly connected with the main body; the rotary drum is rotationally arranged on the fixed column; a rotating shaft is rotationally arranged on the fixing plate, a storage box is installed on the rotating shaft, and a clamping piece is arranged in the storage box and clamps a lens; the rotary drum and the rotary shaft are in transmission connection through a linkage assembly. The rotary drum can be driven to rotate through the power mechanism and the linkage assembly, the rotary shaft can also be driven to rotate, one driving source is dual-purpose, the structure is simple, the manufacturing cost is greatly reduced, and the economic benefit is improved.

A computer-implemented method for generating printing instructions for inkjet printing a spectacle lens, wherein the printing instructions are based on a digital twin of the spectacle lens, the digital twin being sliced into a layer stack. The method includes the steps of 1) positioning a volume element in a discrete xm+1, ym+1, zm+1 . . . xn+1, yn+1, zn+1 position of a layer of the layer stack, based on a positioning of a volume element in a discrete xm, ym, zm . . . xn, yn, zn position of an adjacent layer of the layer stack; or 2) not positioning a volume element in a discrete xm+1, ym+1, zm+1 . . . xn+1, yn+1, zn+1 position of a layer of the layer stack, based on a positioning of a volume element in a discrete xm, ym, zm . . . xn, yn, zn position of an adjacent layer of the layer stack.

A computer-implemented method for determining a refractive error of an eye of a person includes the following steps: a) generating input data containing a distance between the eye of the person and a visual stimulus displayed to the eye of the person and b) generating outcome data containing a refractive error of the eye of the person determined by evaluating the input data. A position of the entrance pupil of the eye of the person is considered when the refractive error of the eye of the person is determined. A computer program, a field device, a remote device, a determining device, a method for producing a geometrical model of a spectacle lens, and a method for producing a spectacle lens are also disclosed. The present disclosure provides a fast, easy, versatile, reliable, and accurate approach for determining a refractive error of an eye of a person.

According to the spectacle lens design method and the spectacle lens provided by the invention, the surface type basic parameters of the spectacle lens are determined by acquiring the spectacle fitting basic parameters and the eyeball morphological characteristic parameters of a spectacle fitting person, and then the contrast ratio of rod cells is reduced by designing a radial inhibition function, so that the visual burden of the peripheral area of macular is relieved; the surface of the spectacle lens is precisely processed through a laser direct writing technology, a complex microstructure is realized, the precise implementation of a designed radial inhibition function is ensured, and the spectacle lens is further coated through a multi-layer coating technology, so that the transmission ratio of short-wavelength light is increased; the S-cone cells are activated, and the cone cell contrast ratio is reduced, so that the eye axis growth is better regulated and controlled, and the myopia progress is slowed down.

Provided are a spectacle lens 1 and related features, wherein the spectacle lens 1 is provided with a lens base material with an optical surface and an anti-reflective film coating the optical surface of the lens base material, the anti-reflective film has a multilayer structure including a low refractive index layer and a high refractive index layer layered on each other, the anti-reflective film is provided with a reactive layer that has relatively higher reactivity to ultrashort pulse laser irradiation than the other layers included in the anti-reflective film, and a marking 2M is applied in a cut lens-like shape in a material removal area formed by at least partially removing one or more specific layers including a topmost layer of the multilayer structure, wherein in the marking, the material removal area is visible due to visible light as a result of exposure of the high refractive index layer below the reactive layer or exposure of the reactive layer having partially remained.

Spectacle lens comprising at least: - a first zone comprising a plurality of micro-optical elements, and - a second zone comprising a plurality of micro-optical elements, wherein the first zone comprising at least one first annular part defined by points of the first zone that are at a first angular distance from the first center of the first zone and the second zone comprising at least one second annular part defined by points of the second zone that are at a second angular distance from the second center of the second zone, a logarithm of an integration of values of the point spread function along the first annular part of the first zone differs by less than 15% from a logarithm of an integration of values of the point spread function along the second annular part of the second zone, the first and second angular distances being equal.

The invention provides a transport case suitable for spectacle lenses, and relates to the technical field of lens transport packaging, the transport case comprises an outer shell, the inner side of the outer shell is provided with a cavity, two groups of symmetrically arranged storage boxes are arranged in the cavity, one end of each storage box is provided with a baffle, the baffle is located on the outer side of the outer shell, and a lower handle is installed above the outer shell. A lower handle is arranged on the outer shell, a locking handle is arranged above the lower handle and connected with the lower handle through a limiting assembly, two sets of symmetrically-arranged positioning openings are formed in the upper end of the outer shell, plug pins are arranged on the inner sides of the positioning openings and connected with the locking handle, the lower ends of the plug pins make contact with the storage box, and two sets of symmetrically-arranged storage cavities are formed in the inner side of the storage box. According to the storage box, the storage box is installed in a pull-out mode, glasses lenses are stored, the integrity of the outer shell is guaranteed, the protection effect is good, the lenses stored in the storage box are independently arranged, and the situation that the lenses collide with one another in the transportation process is avoided.

A method for designing a spectacle lens, said method comprising: an approximate curvature map acquisition step for acquiring a distribution map on xy plane coordinates of an approximate curvature (Cp) for each point on a surface (alpha), which is a design surface; a smoothing processing step of performing smoothing filtering processing on the distribution map; and a design step for designing a new surface (alpha ') on the basis of the distribution diagram of the new approximation curvature (Cp') obtained by the smoothing step.

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.

The invention provides a line-following processing method for contact lens production. Multiple procedures of a female mold shell and a male mold shell are integrated on an automatic production line. Respectively preparing a female mold shell and a male mold shell through an injection molding process, and directly conveying the female mold shell and the male mold shell to subsequent procedures; after the inner surface of the female mold shell is subjected to transfer printing treatment, a mirror making material is injected; then, the female mold shell and the male mold shell are aligned and assembled, and the contact lenses are formed through a thermocuring or photocuring process; and after curing is completed, mold shell removing operation is carried out, and the stripped lens is hydrated and then loaded into a packaging container to be packaged. According to the invention, the production efficiency and the product consistency are improved; an accurate alignment and liquid injection control technology is adopted, so that the stable quality of the lens is ensured; the optimized hydration and packaging process shortens the production period; and meanwhile, part of mold materials can be recycled, so that resource waste and production cost are reduced. The method is suitable for industrial production of large-scale contact lenses.

A method of producing pentaerythritol mercaptocarboxylate including subjecting a mercaptocarboxylic acid and pentaerythritol to a dehydration reaction under solvent-free conditions, a polymerizable composition containing the pentaerythritol mercaptocarboxylate, a resin which is a cured product of the polymerizable composition, an optical material containing the resin, and a spectacle lens containing the resin.

A computer-implemented method suitable for evaluating a progressive spectacle lens and a corresponding computer are provided. Measurement data indicative of at least one of color or transmittance along a plurality of measurement points across at least one line of a spectacle lens is received. The method further includes calculating scalar values representing differences between measurement data of adjacent or overlapping sets of measurement points of the plurality of measurement points. The spectacle lenses are then evaluated based on the scalar values.

The invention belongs to the technical field of intelligent glasses, and discloses intelligent optical zoom glasses which comprise two glasses frames provided with lenses, a nose bridge frame is connected between the two glasses frames, the two glasses frames are provided with nose pads and pile heads, the two pile heads are respectively provided with a left glasses leg and a right glasses leg in a hinged mode, the lenses are optical waveguide glasses lenses, and the optical waveguide glasses lenses are optical waveguide glasses lenses. An electrochromic liquid crystal film is mounted on the front side of the lens; the nose bridge frame is provided with a distance sensor; according to the invention, under the combined action of the lens prism module and the optical waveguide spectacle lenses, rapid long-shot, close-shot, micro-distance and wide-angle zooming is realized, and intelligent zooming can be realized at any time through a distance sensor, a left brain-computer signal sensor and a right brain-computer signal sensor on a spectacle cross beam. Manual focusing can be carried out through a focusing key, and voice focusing can be carried out through a microphone.

A computer-implemented method for calculating a digital twin of a spectacle lens is provided to use the digital twin for a manufacture of the spectacle lens. The digital twin has a predefined power distribution and contains a layer stack with a plurality of individual layers, each layer having a non-uniform layer thickness with a spatial variation and a uniform refractive index. The method includes determining the spatial variation of the layer thicknesses of the individual layers to achieve the predefined power distribution by a spatial control of optical path lengths.