31 results about "Corrective lens" patented technology

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.

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.

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.

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.

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

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 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.

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 invention relates to a waveguide correction lens manufacturing method and intelligent glasses, and the method comprises the steps: providing a correction lens and a waveguide sheet, arranging a cylindrical convex part on the binding surface of the correction lens, arranging a first barb on the peripheral region of the cylindrical convex part, arranging a cylindrical concave part complementary with the cylindrical convex part on the binding surface of the waveguide sheet, and arranging a second barb on the binding surface of the waveguide sheet; second barbs are arranged in the circumferential area of the inner wall of the columnar concave part; the waveguide sheet and the correction lens are arranged in an aligned manner, pre-pressure is applied, and the columnar convex part and the columnar concave part form positioning abutting; the double-laser heat source is started and focused on the columnar convex part and the columnar concave part respectively, the columnar convex part and the columnar concave part are guided to generate elastic deformation through photo-thermal treatment, and the columnar convex part is slowly embedded into the columnar concave part; and after cooling, the columnar convex part and the columnar concave part are elastically deformed to restore the original shape, and the first barb and the second barb are mutually buckled to form a mechanical interlocking structure for limiting relative displacement, so that the reliability of structural connection can be ensured without an adhesive, the bonding efficiency is high, and the yield is high.

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 apparatus includes a sample stage area, an optical assembly, and a camera assembly. The optical assembly includes an objective element, an imaging lens, and a corrector element. The objective element provides a field of view, and at least a portion of the sample stage area is within the field of view. The objective element has variable astigmatism. The imaging lens is configured to receive light transmitted through the objective element and further transmit that light into image space. The corrector element is in image space. The corrector element is configured to induce a second astigmatism. The second astigmatism is configured to offset the variable astigmatism. The camera assembly is configured to receive light transmitted from the corrector assembly.

Systems, methods, and software are described which enable robust measurement of distances between 3D points, such as for pupillary distance (PD) of a wearer of corrective lenses that are known to be coplanar from a color-and-depth camera, e.g., a red-green-blue-depth (RGB-D) camera. Examples can provide a late fusion pipeline that first detects and tracks 2D landmarks in color imagery, projects those detections (detected 2D landmarks) into the depth frame, and discards measurements that appear noncoplanar and nonparallel. A user can be directed to change poses to precisely correct for nonparallel camera poses. Temporal filters can be used for the resulting distance measurements.

This invention belongs to the field of smart glasses technology, specifically relating to a magnetic lens structure for smart glasses. It includes a glasses body and an adjustable nose pad assembly connected to the glasses body. A refractive lens assembly is detachably connected to the nose pad assembly, allowing the refractive lens assembly to move synchronously with the adjustment of the nose pad assembly. By directly mounting the refractive lens assembly to the nose pad assembly, this invention ensures that when the nose pad assembly is adjusted, the refractive lens assembly moves with the nose pad assembly, rather than with the smart glasses body, thus maintaining the interpupillary distance of the refractive lens and improving wearing comfort.

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.

The utility model discloses a vision correction lens which is provided with a lens body, and a central area, a defocus area and a point diffusion area are arranged on the lens body. The central area comprises a front central area and a back central area which are respectively located at the central position of the front of the lens body and the central position of the back of the lens body, and the front central area and the back central area are oppositely arranged; the defocus area is located on the lower half portion of the front face of the lens body, a plurality of adjusting cones are arranged on the defocus area, and the tops of all the adjusting cones incline towards the center of the lens body. The point diffusion area is at least located at the lower half part of the lens body back; except the adjusting cone, other parts of the lens body have a first diopter for correcting vision, and the adjusting cone has a second diopter different from the first diopter. The utility model also discloses corresponding glasses. According to the utility model, eyes can be adjusted, eye axis growth can be inhibited, the contrast ratio can be reduced, and a user can see a distance easily.

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.

According to one or more embodiments, an automated system for performing precise eyewear measurements necessary for the fitting and manufacturing of corrective eyewear may be provided. The automated system may enable the measurement of interpupillary distances for distance and near vision, pupillary heights, reading distance, pantoscopic tilt, vertex distance, and frame curvature. These measurements may ensure that the corrective lenses are centered and adjusted to the visual needs of the wearer.

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.

This system for assisting in determining a final optical prescription for a subject, includes:— at least one measurement device, intended to measure a set of refraction data;— an evaluation device, configured to propose at least one set of evaluation corrective lenses corresponding to an evaluation optical prescription, for the determination, by the subject, of the final optical prescription; the evaluation device determining the at least one proposed set of evaluation corrective lenses according to the set of measured refraction data. The measurement device includes the unit for producing an image encoding the set of measured refraction data, the evaluation device including the unit for reading the image, configured to obtain the set of measured refraction data from the read image.

According to one or more embodiments, an automated system for performing precise eyewear measurements necessary for the fitting and manufacturing of corrective eyewear may be provided. The automated system may enable the measurement of interpupillary distances for distance and near vision, pupillary heights, reading distance, pantoscopic tilt, vertex distance, and frame curvature. These measurements may ensure that the corrective lenses are centered and adjusted to the visual needs of the wearer.

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.