67 results about "Corrective 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.

A display and vision correction system includes a head-mounted display unit, a glasses 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 glasses frame is configured to be worn on the head of the user. The removable lens assembly is removably coupleable to the head-mounted display unit and to the glasses frame. The removable lens assembly includes a corrective lens element.

A method for optimizing an ophthalmic treatment, comprising: measuring a patient's eye with an ophthalmic measurement instrument, fabricating a trial correction lens and testing it on the patient's eye, determining a score or success criteria for the trial correction, using the score or success criteria to provide training information to a machine-learning algorithm, and using the machine-learning algorithm to determine an optimal ophthalmic correction.

The present invention provides a spectacle lens and a therapeutic apparatus for preventing refractive deterioration and visual fatigue caused by visual field asymmetry, belonging to the technical field of spectacle lenses and therapeutic apparatuses for eye care and treatment. The visual area is located above the center of the spectacle lens, and the horizontal distance from the geometric center or theoretical geometric center of the visual area to the lower edge of the peripheral visual area is greater than the horizontal distance from the geometric center or theoretical geometric center of the visual area to the upper edge of the peripheral visual area; a defocusing lens is provided on the peripheral visual area; the visual area is a hole or is provided with a non-defocusing correction lens, and the non-defocusing correction lens includes a myopic non-defocusing correction lens or a hyperopic non-defocusing correction lens, and also an astigmatic non-defocusing correction lens; an astigmatic lens with the same or substantially the same astigmatic power as the above astigmatic non-defocusing correction lens is further compounded on the peripheral visual area. The present invention can effectively prevent fatigue and refractive error deterioration caused by the deterioration of eye asymmetry, and has a good effect.

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.

The invention discloses a red light amblyopia therapeutic apparatus with a reverse beat function, and relates to the technical field of red light amblyopia therapeutic apparatuses, the red light amblyopia therapeutic apparatus comprises a mounting shell, a therapeutic device is arranged on the mounting shell, and the therapeutic device comprises a mounting part. According to the invention, the LED light-emitting plate, the second lens, the milky-white diffusion plate, the second support, the internal fixation lens group, the third support, the correction lens, the fourth support, the reflector, the first semi-transparent and semi-reflective plane mirror, the fifth support, the third lens, the first support, the first lens, the fixing plate, the fixation screen and the second semi-transparent and semi-reflective plane mirror are arranged, so that the LED light-emitting plate emits red light; the first lens, the second lens, the third lens, the second semitransparent and semi-reflective plane mirror and the correction lens are arranged in sequence, light of the fixation screen enters the left eye and the right eye through the spectroscope and the reflector after passing through the internal fixation lens group, a neural foundation is laid through passive stimulation, functional application of active training and enhancement is achieved, and the device is particularly suitable for older children or patients needing to improve training efficiency.

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.

The invention provides a near-to-eye display lens without a light machine and a near-to-eye display system, and relates to the technical field of near-to-eye display. Through the innovative architecture of the self-luminous light source, the polarized light path and the light splitting film reflection, the implementation optimization comprises the steps that a traditional light machine is canceled, the self-luminous light sources such as Micro-LED / Micro-OLED are adopted to directly emit light, and the size of the optical module is reduced; by utilizing an X-cube prism and polarization conversion, a compact light path design is realized, the lighting effect is improved, and stray light interference is reduced; the light splitting film array expands the eye box and improves the watching comfort of a user; and a refractive lens is compatible and is directly attached to a myopia / hyperopia correction lens, so that the user suitability is improved. According to the scheme, the volume and the weight of the AR glasses are remarkably reduced while high image quality is maintained, and the AR glasses have higher commercial potential.

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.

The invention belongs to the technical field of shock tube combustion monitoring, and relates to a shock tube large-size annular visual structure light path correction device which comprises a large-size annular window and a correction lens, the large-size annular window is in a concentric cylinder shape, the correction lens is in a tile shape, and the large-size annular window and the correction lens are both made of high-temperature-resistant transparent materials; the correction lenses are arranged in pairs, the correction lens pairs are axially symmetrically arranged on the two sides of the outer cylindrical surface of the large-size annular window, and the large-size annular window is used for visually monitoring the combustion process in the large-size annular window; according to the invention, the flame light beams diverged in the shock tube are collimated, so that the flame light beams enter the high-speed schlieren camera in parallel, and the transient phenomenon responsiveness and accuracy of camera shooting in the combustion process are improved.

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.

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

A portable apparatus for determining refractive error in the human eye comprises an elongate base rail having a left side base rail portion and a right side base rail portion; a first lens carrier housing mounted on the left side base rail portion, a first lens carrier carrying a plurality of corrective lenses and being substantially housed within the first lens carrier housing so as to expose a corrective lens of the first lens carrier in a test position of the first lens carrier housing; a second lens carrier housing mounted on the right side base rail portion, a second lens carrier carrying a plurality of corrective lenses and being substantially housed within the second lens carrier housing so as to expose a corrective lens of the second lens carrier in a test position of the second lens carrier housing; a first user operable control adapted for moving the first lens carrier relative to the first lens carrier housing and a second user operable control adapted to move the second lens carrier relative to the second lens carrier housing, whereby the first user operable control and the second user operable control are each movable to select a corrective lens to be exposed in the test position of the respective carrier housing. and wherein the portable apparatus includes at least one of (a) the base rail is adapted to be foldable at a middle portion thereof and (b) one of the first lens carrier housing and the second lens carrier housing is detachable from the respective left side base rail portion or right side base rail portion.

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.

The invention discloses a lens based on augmented reality, belongs to the technical field of augmented reality near-to-eye display, and mainly solves the problems of heavy system, large assembly error and optical performance damage caused by split implementation of waveguide display and refraction correction functions in the prior art. According to the lens, the low-refractive-index layer, the high-refractive-index waveguide layer and the diffraction grating structure are directly constructed on the refractive lens, light rays are controlled to be transmitted in the waveguide layer in a total reflection mode, are diffracted by the grating and then penetrate through all the layers to enter human eyes, and the monolithic integration design is achieved. The lens is mainly used in augmented reality equipment, has a vision correction function while providing virtual image display, and is suitable for user groups needing to wear correction lenses.

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.

The invention relates to an intelligent nursing and monitoring device for an orthokeratology lens, which belongs to the technical field of medical instruments and comprises a flexible eyelid attaching ring, and an integrated lens state monitoring module, a biomechanical resetting module, a micro-channel lubricating system, a main control module and a state warning module of the flexible eyelid attaching ring. The lens state monitoring module senses the position of the lens in real time through electromagnetic coupling; the biomechanical resetting module can actively correct lens deviation; the micro-channel lubricating system dynamically provides lubrication; the main control module coordinates all the modules to work according to monitoring signals, and the state warning module responds to abnormal conditions. According to the device, real-time monitoring, active correction and dynamic nursing of nighttime wearing of the orthokeratology lens can be achieved, the wearing safety and comfort are improved, intelligent nursing is assisted, and the correction effect is optimized.

Eyeglasses, such as head-mounted devices, may include adjustable corrective lenses and / or displays. The eyeglasses may include gaze-tracking circuitry that tracks a user's gaze direction. The gaze-tracking circuitry may include a rangefinder that uses phase-based optical coherence tomography to determine interpupillary distance. The rangefinder may include one or more emitters, such as lasers, that emit infrared light into a beam splitter, which splits the light into signal light, which travels a free-space path to the eye, and reference light, which travels a fixed reference path to multiple image sensors arranged around the periphery of the eye.The signal light is specularly reflected from the eye (creating a highlight of the eye), and the reflected signal light is combined with the reference light, creating an interference pattern that can be detected and analyzed by the image sensors to determine the eye distance.

A display and vision correction system includes a head-mounted display unit, a glasses 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 glasses frame is configured to be worn on the head of the user. The removable lens assembly is removably coupleable to the head-mounted display unit and to the glasses frame. The removable lens assembly includes a corrective lens element.