31 results about "Corrective contact lens" patented technology

The invention discloses a vision correction lens for an XR product and a manufacturing method thereof.The lens comprises a front surface and a rear surface, the front surface is arranged to be a plane, the rear surface is arranged to be a curved surface, and the manufacturing method specifically comprises the steps that S1, a three-dimensional human eye eyeball simulation model containing human eye structure features is constructed, establishing a lens-eyeball combined optical model; s2, optimizing the integrated structure of the lens and the waveguide; s3, sampling lens grid data points point by point; s4, constructing a target evaluation function MF and optimization parameters; s5, correlation coefficients are calculated, and lens and free ring curved surface profiles are constructed; according to the invention, the difference between the natural light and the light from the XR waveguide sheet in wavelength and light component is particularly distinguished, the problem of image distortion at the edge of the field of view under a large visual angle can be obviously improved, and the image quality and visual comfort of the XR glasses are effectively improved on the premise of ensuring the vision correction function, so that the vision correction effect is improved. And the integrated structure of the lens and the waveguide is simplified.

An object of the present invention is to provide a holding device, a camera unit, and an imaging system capable of capturing an image of a subject with higher image quality than before in water.SOLUTION: A holding device insertable into a transparent tubular member, the holding device comprising: a camera holding section capable of holding an image pickup apparatus including an image pickup optical system and an image pickup device for photographing an outside of the tubular member; a correction lens having a curvature at least in a cross section orthogonal to an extending direction of the tubular member; and a lens holding section capable of holding the correction lens to be located between the tubular member and the image pickup optical system when the holding device is inserted into the tubular member and the image pickup apparatus is held by the camera holding section.SELECTED DRAWING: Figure 13

This application relates to a corrective lens and diopter adjustment method for AR glasses displays, belonging to the field of AR displays. It is used for mounting on AR glasses. The waveguide glasses include a frame and a waveguide lens, including a central beam. A polarizer assembly and a correction assembly are connected to the inner and outer sides of the central beam via clamps. The polarizer assembly and the correction assembly are clamped to the inner and outer sides of the frame via clamps. The correction assembly includes a light-transmitting base and an adjustment component. The light-transmitting base is hollow and contains a liquid light-guiding medium. A planar transparent substrate is located on one side of the light-transmitting base near the waveguide lens, and a transparent elastic layer is located on the other side. The planar transparent substrate, the liquid light-guiding medium, and the transparent elastic layer are stacked together to form a diopter lens with diopter. The adjustment component is configured to adjust the liquid pressure of the liquid light-guiding medium. The pressure difference between the liquid light-guiding medium and the external atmosphere causes deformation of the transparent elastic layer, thereby changing the thickness and surface curvature of the diopter lens.

The utility model discloses a vocal music performance expression auxiliary correction mirror which comprises a base, and an adjusting assembly is arranged on the top of the base. The adjusting assembly comprises a first auxiliary block, one side of the rotating rod is fixedly connected with a second auxiliary block, the adjusting assembly further comprises an electric telescopic rod, one end of the electric telescopic rod is fixedly connected with a protruding block, and the top of the base is fixedly connected with a third auxiliary block. And one end of the convex block is rotationally connected with one end of the third auxiliary block. The utility model relates to the technical field of correction glasses. According to the vocal music performance expression auxiliary correction mirror, by starting an electric telescopic rod, a butt joint block can push a rotating rod to rotate, and finally the correction mirror body can be adjusted to adjust the angle, a triangular structure is formed among the rotating rod, the electric telescopic rod and a base, and all components at the three corners are rotationally connected; and when the length of the electric telescopic rod is changed, the number of angles in the triangle can be automatically and adaptively changed.

This application discloses a near-eye display device and a near-eye display apparatus. The device includes an eye-tracking system, an optical display system, and a corrective lens. The eye-tracking system includes a light source module and an image acquisition module. The light source module emits polarized light. The image acquisition module includes a stray light suppression component, which can suppress at least a portion of stray light from entering the image acquisition module. The stray light is polarized light reflected by the corrective lens. The polarization properties of the light transmitted through the stray light suppression component are different from the polarization properties of the stray light reaching the image acquisition module. This avoids stray light formed after the illumination beam is reflected by the corrective lens from entering the image acquisition module, which helps improve image clarity and thus improves the accuracy of eye-tracking calculations.

The application discloses a kind of corrective lens design equipment, storage medium and lens, it is related to medical equipment field, for solving the problem of existing refractive correction improves visual acuity or the effect of improving visual quality is poor.Refractive lens design equipment includes acquisition device, selection device and design device, acquisition device obtains the central refractive power of target individual eyeball, selection device finds out target refractive topography from refractive topography group, central refractive power is in the central refractive power range corresponding to target refractive topography, and refractive topography describes the retinal refractive power distribution of eyeball with corresponding central refractive power in preset field angle;Design device obtains refractive power distribution correction scheme in conjunction with target refractive topography, to obtain the corrective lens for target individual.The present application combines the peripheral defocus characteristics of human eye retina to design semi-personalized lens for individual, to achieve the purpose of improving visual acuity, improving myopia prevention and control effect or improving peripheral visual quality.

Different users of head-mounted devices have different needs for vision correction. It can be desirable to provide a system to determine a corrective lens that is most suitable for a given user. A dispenser can include a plurality of different lenses that provide different types of vision correction. The dispenser can provide an appropriate one of the lenses, and the user can use the lens with the head-mounted device during an experience session. During the experience session, the user can verify that the lens is satisfactory.

A unitary lens structure is provided which is employable with spectacles as well as goggles and safety eyewear and AR and VR eyewear. The lens is formed as a unitary structure with a curved first lens having one or a plurality of projections thereon having surfaces which are formable to prescription eyewear providing vertical vision correction and curved horizontal vision correction.

To provide an assembly type binocular surgical magnifier capable of quickly assembling a magnifying lens tube and a fixing frame. [Solution] The collapsible binocular surgical magnifier comprises a bridge (2) for attaching an optical lens, and extensions (14) extending outward from both ends of the bridge, with a fixing ring (3) attached to the other end of the extension, forming a fixed frame (1) with a certain angle formed between the central axis of the fixing ring and the longitudinal axis of the bridge, a magnifying lens tube (5) removably attached to the fixing ring, with a magnifying lens at its front end face and a housing at its rear end having an attachment portion, and a corrective lens ring (10) removably attached to the attachment portion at the rear end of the magnifying lens tube for attaching a myopia lens or a reading glasses lens.

A custom lens device is disclosed as a corrective lens created by a specialized 3D printer. Specifically, a qualified technician working with an ophthalmologist and / or an optometrist combine laboratory measurements of the retina and other eye surfaces, then combine that data with subjective input from the patient's correction to an Amsler grid, to create a custom lens that will un-distort vision which has been distorted (i.e., warped), due to undulations in the retina caused by a number of eye diseases, including, but not limited to, epiretinal membrane and macular degeneration.

Mountable surgical binocular magnifier, characterized in that it comprises the following: a mounting frame comprising a crossbar designed for mounting optical lenses and extension sections extending outwards from both ends of the crossbar, the other end of each extension section being provided with a mounting ring, wherein the central axis of the mounting ring and the longitudinal axis of the crossbar form a defined angle; a magnifying sleeve which is detachably mounted on the respective mounting ring, wherein a front end face of the magnifying sleeve is designed as a magnifying lens and its housing has a mounting section at the rear end area; a corrective lens ring which is detachably mounted on the mounting section of the rear end of the magnifying sleeve; wherein the corrective lens ring is intended for mounting a lens in case of myopia or a lens in case of presbyopia.

A method of using computer-generated holography to determine a corrective lens prescription comprises computing a hologram of an image. An aberration phase map is computed using a set of Zernike pol

An image projection system includes a picture generation unit and a controller. The picture generation unit includes a plurality of monochromatic transmitters configured to transmit light beams corresponding to an image projection plane located at a virtual distance; combining optics configured to combine the light beams into a combined light beam and couple the combined light beam into a combined transmission path; and an ametropia-corrective lens having a configuration corresponding to the virtual distance. The ametropia-corrective lens is configured to receive the combined light beam and transmit the combined light beam further along on the combined transmission path such that the combined light beam renders an image perceived at the image projection plane. The controller is configured to receive ametropia diagnostic information corresponding to an ametropia of an eye, and adjust the configuration of the ametropia-corrective lens in order to adjust the virtual distance of the image projection plane.

The present application provides a variable focus lens element, a corrective lens assembly and an optical display system. The variable focus lens element comprises a lens unit and a polarization controller. The lens unit has different optical powers for light beams with different polarization directions. When a light beam is introduced into the variable focus lens element via the polarization controller in a first state, the polarization direction of the light beam is converted by the polarization controller. When the light beam is introduced into the variable focus lens element via the polarization controller in a second state, the polarization direction of the light beam is prevented from being converted by the polarization controller.

The invention relates to a system for determining the value of a measure associated with subjective values ​​of optical characteristics of at least one corrective lens adapted for an eye of a subject by carrying out a subjective test in which the subject is asked to describe his visual performance under a plurality of real optical conditions by selecting a descriptive answer from a set of possible descriptive answers, the system comprising a computer having one or more memories and one or more processors, wherein: an initial model giving the likelihood of each descriptive answer in the set of descriptive answers for each of a plurality of theoretical optical conditions is stored in one of the one or more memories of the computer, the one or more processors of the computer being programmed to: a) collect (500) the results of the subjective test, the subjective test being carried out in the following manner: the subject is asked to describe his visual performance under each of the plurality of real optical conditions by selecting a descriptive answer from the set of possible descriptive answers for each real optical condition, the results comprising each selected descriptive answer and the corresponding real optical condition, b) determine (800, 900) the value of the measure by taking into account the initial model and each collected descriptive answer.

A contact lens, which can be any of a conventional hard contact lens, a corneal corrective lens, a scleral lens, or a soft contact lens, has one or more peripheral annular zones adjacent to and radially outward from a central optical zone of the contact lens. The peripheral annular zones include an alignment zone for directional control, upright control, or peripheral alignment to improve the molding effect of a corneal corrective lens, the comfort or vision quality of a conventional RGP, a scleral contact lens, or a soft contact lens. The elevation of the lens along one sub-axis in the alignment zone is different than the elevation of the lens along at least one other sub-axis.

The invention relates to a device for determining a final value of a vision correction power of a final correction lens to be placed in front of an eye of an individual, the device comprising a computer having one or more memories and one or more processors, wherein:-an initial measurement representative of a size of a refractive characteristic of an eye of an individual measured using a first optometry instrument,-an estimate of said size calculated using a predetermined model of a second optometry instrument,-said one or more memories storing therein:-an initial measurement representative of the size of the refractive characteristic of the eye of the individual measured using the first optometry instrument; determining a current value of the size based on a current corrective lens previously worn by the individual, the one or more processors being programmed to implement the steps of: a) comparing a difference between the measured value of the size and the current value with a first threshold value, and b) comparing the difference between the measured value of the magnitude and the estimated value with a second threshold value when the difference between the measured value of the magnitude and the current value is greater than or equal to the first threshold value, c) determining the final value of vision correction power based on the comparison.

This invention discloses a corrective lens belonging to the field of lens technology, comprising: a first region, a second region, a third region, a fourth region, a fifth region, a sixth region, a seventh region, an eighth region, and a ninth region; the first region is the central area, composed of a basic spherical lens and a cylindrical lens, used for precise refractive correction; the lens adopts a nine-square grid layout, which prevents reversal naturally and has a significant effect on myopia correction.

The present application relates to lens module, glasses and wearable device. The lens module comprises a frame, a first corrective lens, a second corrective lens and an adjusting device. The frame defines a receiving cavity, the first corrective lens and the second corrective lens are located in the receiving cavity, and the second corrective lens is arranged opposite to the first corrective lens. The adjusting device comprises a driving mechanism and an elastic member provided with a cavity. The elastic member is arranged on the frame and connected to at least one of the first corrective lens and the second corrective lens. The driving mechanism is used to drive the medium to flow into or out of the cavity to deform the elastic member, so as to change the distance between the first corrective lens and the second corrective lens. The lens module can be adjusted adaptively for users with different vision degrees, meeting the use requirements of different users or different scenes. The elastic member can also play a buffering role to prevent the lens module from being damaged when falling or hitting.

The utility model discloses a pair of goggles convenient to maintain and overhaul, which relates to the field of goggles and comprises a goggle frame, goggle lenses are arranged on the inner side of the goggle frame, a placement block is arranged at the upper ends of the goggle lenses, a lens assembly is arranged on the inner side of the goggle frame, and first magnetic rings are symmetrically arranged on one side of the lens assembly. A second magnetic ring is arranged on one side of the first magnetic ring, a correction lens is arranged on the inner side of the second magnetic ring, fixing columns are arranged on the two sides of the glasses frame, glasses legs are arranged on the outer sides of one ends of the fixing columns, and an installation auxiliary mechanism is arranged on one side of each glasses leg. The parts can be replaced more flexibly, the parts can be maintained and overhauled quickly and conveniently, customized customization can be carried out according to different crowds, and replacement can be carried out according to different requirements, for example, sunglasses and goggles lenses are replaced, or myopia correction lenses are installed.

This is a system and method for determining a patient's prescription for corrective lenses using predictive calculations and corrected-eyesight simulation. Together, these technologies act as a digital substitute for phoropter testing, thus reducing the cost, time, and human error associated with an eye exam. Based on age, gender, autorefractor readings, and environmental factors, a patient specific model is calculated and fed into a visual simulation tool. From this simulation, an eye care professional is able to determine the patient's corrective lens prescription.

Apparatus and methods are described including a progressive lens (20) that is configured to provide a far-vision correction and a near-vision correction. The progressive lens includes a single-focus, far-vision corrective lens (22) that is configured to provide only a portion of the far-vision correction, and a film (24) coupled to the single-focus, far-vision corrective lens (22). The film (24) defines a far-vision corrective portion (26) that is configured to provide the remainder of the far-vision correction, a near-vision corrective portion (28) that is configured to provide additive near-vision correction, and an intermediate portion (30) in which the film transitions between the far-vision corrective portion and the near-vision corrective portion. Other applications are also described.

The invention relates to an optometry system comprising a computer having one or more processors, the one or more processors are programmed to: a) control the optometry device to determine a photopic vision value of the vision correction power of the correction lens for each eye of the individual by implementing a photopic vision subjective refractive test in photopic vision, or to retrieve an initial vision correction value stored in a memory of the optometry system, or collecting initial vision correction values, b) a step of verifying the placement of the eye of the individual under light conditions ensuring scotopic vision of the eye of the individual for an amount of time, c) a step of verifying the placement of the eye of the individual under light conditions ensuring mesopic vision of the eye of the individual, and d) a step of controlling the optometry device to achieve a mesopic vision subjective refractive test, the meso-vision subjective refractive test comprises: blurring the eyes with a predetermined clouding spherical power, iteratively adding to the eyes a predetermined spherical power negative value identical to the clouding test value and determining the meso-vision binocular visual acuity of the eyes until a maximum value of the meso-vision binocular visual acuity is reached, and determining the meso-vision binocular visual acuity of the eyes until the maximum value of the meso-vision binocular visual acuity is reached. A mesopic raw value of vision correction power is determined for each eye, e) determining a mesopic value of vision correction power based on the mesopic raw value of vision correction power.

The present disclosure relates to display systems and, in particular, to head-mounted display systems.SOLUTION: A display and vision correction system includes a head-mounted display unit, an eyeglass frame, and a removable lens assembly. The head-mounted display unit is configured to be worn on a head of a user and includes a display for providing graphical content to the user. The eyeglass frame is configured to be worn on a head of a user. The removable lens assembly is removably coupleable to the head-mounted display unit and the eyeglass frame. The removable lens assembly includes a corrective lens element.SELECTED DRAWING: Figure 18B

A refraction-corrective lens detection method and an electronic device. The method comprises: when it is detected that a head-mounted display device is worn, photographing in a direction towards the eye on the basis of a photographing assembly, to obtain an eye image; matching edge information of an eye region in the eye image with preset edge information, the preset edge information being edge information of an eye region in a reference eye image, and the reference eye image being obtained by photographing on the basis of the photographing assembly in the direction of the eye when the head-mounted display device is not provided with a refraction-corrective lens; if the edge information does not match the preset edge information, determining that the head-mounted display device is currently provided with a refraction corrective lens.

An apparatus uses optical components arranged as a telescope to simulate the optical effects of intraocular lenses on images viewed in the presence of scattering light and glare sources. By simulating a view of a real image through an intraocular lens and projecting the simulated view into a patient's eye, the patient can view the quality of vision that may result from use of a particular lens as a corrective tool. The intraocular lens is placed within the fields of view of peripheral optical components having prescribed operating parameters that allow for projecting a simulated image through an intraocular lens into a patient's eye before the intraocular lens is implanted. The patient can perceive the results of a corrective lens before that lens is attached to or implanted within the patient's eye.

A head-mounted device can have a head-mounted housing. The head-mounted housing can have a display that displays images for a user through a lens. The display and lens can be mounted in left and right optical modules. Attachment structures, such as magnets, can be used to removably attach left and right vision correction lenses to the left and right optical modules, respectively. When the user wears the head-mounted device, the images can be viewed from an eyebox through the vision correction lenses. The vision correction lenses and head-mounted device can be provided with near field communication antennas. The antennas can be formed from coils that surround corrective lens elements in the vision correction lenses. In the head-mounted device, the antennas can be formed from coils that surround lenses in the optical modules and / or can include other coils.

A head-mounted device may have a head-mounted housing. The head-mounted housing may have displays that display images for a user through lenses. The displays and lenses may be mounted in left and right optical modules. Attachment structures such as magnets may be used to removably attach left and right vision correction lenses to the left and right optical modules, respectively. The images may be viewed from eye boxes through the vision correction lenses while the head-mounted device is being worn by the user. The vision correction lenses and the head-mounted device may be provided with near-field communications antennas. The antennas may be formed from coils that surround corrective lens elements in the vision correction lenses. In the head-mounted device, antennas may be formed from coils surrounding the lenses in the optical modules and / or may include other coil(s).

A method of fabricating a lens element for an adjustable power lens of the kind comprising two lens elements that are slidable relative to one other in a direction transverse the optical axis of the lens and have respective lens surfaces that are shaped to act together to form a corrective lens, the power of which varies according to the relative disposition of the two lens elements, the method comprising the steps of forming a lens puck having two opposite faces, which are shaped to form opposite lens surfaces of one of the lens elements of the adjustable power lens, the puck having at least one alignment feature, and thereafter edging the puck to a desired eye shape with reference to the alignment feature.