645 results about "Eye lens" patented technology

The invention relates to the technical field of spectacle lens processing, in particular to optical spectacle lens polishing equipment which comprises a bottom plate, a polishing unit and a locking mechanism. The rotating ring and the pushing plates and the clamping blocks on the rotating ring jointly clamp the circumferential face of the spectacle lens and conduct self-locking, so that the rotating ring and the spectacle lens are integrated, in the follow-up polishing face replacing process, the rotating ring is moved upwards and turned over, the spectacle lens is placed on the vertical plate, and the polishing face is replaced. In the process, the reference of the rotating ring is always taken as the reference of the spectacle lens, so that the problem that the processing time and the processing error are increased due to the fact that the reference of the spectacle lens needs to be repositioned in the process of replacing the polished surface is solved; the polishing device is suitable for the polishing machining process of two spherical surfaces of the spectacle lens, the swing path of the polishing plate is limited in the polishing process, and the polishing precision and stability are improved.

Disclosed is a display system for compensating a blind area of a field of view in a rearview mirror of a tractor-trailer. The system includes an acquisition apparatus, a sensing apparatus, a display control apparatus, and a display apparatus. The acquisition apparatus includes a left front camera, a right front camera, a left rear camera, and a right rear camera. The sensing apparatus is an angle sensing sensor arranged on a tractor-trailer, and the angle sensing sensor is used to obtain the angle by which the axis of a trailer deviates from the axis of a vehicle head. The display control apparatus is connected to the acquisition apparatus and the sensing apparatus. The display apparatus is a display arranged in a cab and is used for displaying to the driver an image output by the display control apparatus. By means of the multi-camera configuration, during turning, picture compensation is performed on an area in the rearview mirror that is blocked by the trailer, thereby effectively solving the problem of the trailer blocking field of view for observing. Compared with an ordinary panoramic image spliced when use a fish-eye lens, a driver can more intuitively perceive the position at which a risk factor is located, thereby reducing thinking time and reducing accidents.

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 application discloses a microstructure lens and glasses, comprising: a lens body having an optical center; the first microstructure unit is connected with the lens body, the first microstructure unit surrounds the optical center, and the geometric center of the first microstructure unit coincides with the optical center; the plurality of second microstructure units are connected with the lens body, and the plurality of second microstructure units are arranged around the first microstructure unit; the geometric center of any one of the plurality of second microstructure units does not coincide with the geometric center of the first microstructure unit, and the geometric centers of any two of the plurality of second microstructure units do not coincide. According to the micro-structure spectacle lens, the first micro-structure unit and the second micro-structure unit have the function of not focusing light on the retina, and the eccentric asymmetric layout can introduce stimulation signal micro-fluctuation of the micro-structure area on the surface of the lens, so that the time of a high-intensity stimulation effect can be kept; and the durability of the lens in intervening the refractive error development is improved.

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 present application provides a defocused eyeglass with a microlens array, a design method and eyeglasses. The defocused eyeglass with a microlens array comprises a first surface and a second surface opposite to the first surface, a regular polygonal grid area is set outside the clear vision area of ​​the first surface, and a microlens is arranged in each regular polygonal grid. The defocused eyeglass is designed according to the preset energy ratio of the human eye, which can greatly improve the wearer's experience.

A spectacle lens is provided for a display device (1) which can be placed on the head of a user and generates an image, wherein the spectacle lens (3) has a front side (23) and a back side (11), an inlet section (12) and a deflection section (18) spaced from the inlet section (12), and a light guide channel (21) which guides light beams (L1) of the generated image, which are coupled into the spectacle lens (3) via the entrance section (12) of the spectacle lens (3), in the spectacle lens (3) through at least one reflection to the deflection section (18), from which they are deflected to exit the spectacle lens (3) via the rear side (11), wherein the light guide channel (21) has a base body (13) and a first channel boundary layer (16), wherein the base body (13) comprises a first interface (14) and a second interface (15), one of which faces away from the front side (23) and the other away from the rear side (11), wherein the first channel boundary layer (16) is applied directly to the first boundary surface (14) and is designed as an angle-dependent reflection layer which reflects the light beams (L1) only if their angle of incidence is greater than a predetermined first critical angle, and wherein a first colored layer is applied to the first channel boundary layer (16), which is designed as an adhesive layer or as a lacquer layer.

Microlens peripheral defocus eyeglasses belong to the technical field of eyeglasses. The eyeglasses of the present invention are arranged as a central correction area, a nasal microlens area, a temporal microlens area, and a lower microlens area. The nasal microlens area and the temporal microlens area are each provided with two gradient microlens areas with different refractive powers and a full-quantity microlens area. Or the eyeglasses are arranged as a central correction area and an annular microlens area. The annular microlens area is provided with two gradient annular microlens areas with different refractive powers and a full-quantity annular microlens area, or the lower area of ​​the annular microlens area is provided with an annular lower microlens area. The microlens area is composed of a plurality of independent microlens arrays, and at least two or more microlenses in the microlens array area have different refractive powers, shapes, and diameter lengths. The independent microlens is arranged as a convex lens relative to the central correction area, with a diameter length of 0.2 mm to 4.5 mm, and a distance between two adjacent microlenses of 0.1 mm to 0.4 mm.

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 invention provides a low-light-level enhancement camera imaging enhancement method and system, and the method comprises the steps: obtaining a target video shot by a microarray fly's-eye lens camera, carrying out the frame-by-frame splitting processing of the target video, so as to obtain a plurality of target video frames, and carrying out the preprocessing of the corresponding target video frames, so as to obtain a plurality of target images; establishing an initial filter, performing updating processing on the initial filter to obtain an updated filter, and performing adaptive filtering processing on the target image based on the updated filter to obtain a filtered image; identifying a noise level of the filtered image, and determining a low-light image frame based on the noise level; gaussian filtering processing and detail enhancement are carried out on the low-light image frame; according to the method, the corresponding low-light-level image is determined according to the noise level of the image, enhancement processing is carried out on the low-light-level image, the calculation complexity is remarkably reduced, and super-resolution enhancement of the low-light-level image is achieved.

The utility model relates to efficient contact lens polishing equipment which comprises a base, a motor is arranged on the right side in the base, a rotating disc is fixedly connected to the right side of an output shaft of the motor, an eccentric rod is fixedly connected to the right side of the rotating disc, and a first driving arm is movably connected to the outer portion of the eccentric rod. A rotating rod is fixedly connected to the left side of the first driving arm, a second driving arm is fixedly connected to the top of the rotating rod, and a third driving arm is hinged to the second driving arm. According to the efficient polishing equipment for the contact lenses, the rotating direction of the polishing block is the same as that of the contact lens body, the rotating speed of the polishing block is larger than that of the contact lens body, the rotating speed difference value of the polishing block and the contact lens body is the polishing speed of the contact lens body, and the polishing speed of the contact lens body is adjusted by adjusting the rotating speed of the second motor and the rotating speed of the third motor. And the polishing speed of the contact lens body can be accurately regulated and controlled.

The embodiment of the invention provides a laser illumination module, an optical projection system and intelligent head-mounted equipment. The laser illumination module comprises a first lens group, a fly eye lens, a second lens group, a reflector, an internal total reflection prism and a DMD chip. The first lens group comprises at least one of a first lens and a second lens and a diffusion sheet; the fly-eye lens is located on the light emitting side of the first lens group; the second lens group comprises a third lens and a fourth lens; the reflecting mirror is positioned on a light path between the third lens and the fourth lens; the internal total reflection prism is positioned on the light emitting side of the fourth lens; the DMD chip and the internal total reflection prism are arranged adjacently; the fourth lens can move along the optical axis of the fourth lens so as to change the interval between the fourth lens and the third lens and the interval between the fourth lens and the internal total reflection prism, and therefore zooming is achieved. And the DMD chip receives the zoomed illumination light, so that the laser illumination module can be matched with DMD chips with different sizes.

The embodiment of the invention provides an optical test method and device for identifying fly-eye lens defects and a medium. The optical test method for identifying fly's-eye lens defects comprises the following steps: enabling parallel light to pass through a fly's-eye lens to be tested and then to be projected to a lens group; focusing the light emitted by the fly's-eye lens through the lens group, so that the light forms a light spot of the fly's-eye lens on a preset imaging surface; comparing the light spot of the fly-eye lens with a standard light spot; and according to a comparison result, identifying whether the fly's-eye lens has defects or not.

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 finish machining device for spectacle lenses comprises a machine head part, a groove depth control part, a grooving control part, a grinding wheel part and a longitudinal and transverse moving part. The machine head part is used for clamping a to-be-processed lens; the groove depth control part and the grooving control part guide and limit the lens to be machined through ingenious mechanical structure design, and the lens is promoted to move to the correct position to wait for machining. The grinding wheel part is used for processing a lens; and the longitudinal and transverse moving part has a guiding effect and is used for resetting the whole machine. In the lens machining process, the machine head part clamps a lens to be machined and falls under the control of the longitudinal and transverse moving part till the lens makes contact with the grooving control part, at the moment, the lens smoothly moves to the grinding wheel part under the mechanical guide of the grooving control part and begins to be machined, and at the moment, the machining effect, namely the lens grooving depth and the chamfering width, is controlled through software. The operation difficulty is greatly reduced in the whole machining process, the design is ingenious, the practicability is extremely high, the labor cost is greatly reduced, and the requirements of the spectacle lens machining field are better met.

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.