85 results about "Corrective lens" patented technology

The invention relates to the technical field of treatment of myopia, and discloses a method and a composition for preventing or treating myopia by adopting vinpocetine, the method comprises vinpocetine, or tropicamide, or phenylephrine hydrochloride, or a combination of these substances as a sole active ingredient for inhibiting or controlling the progression of myopia; the methods in the present application can reduce the dependency of subjects with such visual impairments on corrective lenses. For example, the methods described herein may result in improved vision, including improved visual acuity. Abnormal axial elongation of eyeballs can be avoided, and therefore complications, especially serious retina diseases threatening vision, can be avoided.

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.

The invention discloses a waveguide module and intelligent glasses. The waveguide module comprises a waveguide layer; the first cover plate is located on the side, facing a user, of the waveguide layer, and a lens mounting hole is formed in the first cover plate; and the correction lenses are mounted in the lens mounting holes. The requirement of a user with visual impairment for imaging definition can be met, and the wearing comfort is improved, so that the use experience of the user is improved.

The invention discloses a detection method of a refractive correction lens and electronic equipment, and belongs to the technical field of electronic equipment. The method comprises the steps that under the condition that it is detected that the head-mounted display device is worn, shooting is carried out in the eye direction based on the shooting assembly, and an eye image is obtained; matching the edge information of the eye region in the eye image with preset edge information; the preset edge information is edge information of an eye region in a reference eye image, and the reference eye image is obtained by shooting in the eye direction based on the shooting assembly under the condition that the head-mounted display device is not provided with a refractive correction lens; and if the edge information is not matched with the preset edge information, determining that the head-mounted display device is currently configured with a refractive correction lens.

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.

A corrective lens for correcting of myopia of an eye of a patient includes an internal diffractive region and a concave spherical surface. The corrective lens controls longitudinal chromatic aberration by changing a longitudinal focus of blue and red light relative to a focal point of green light.

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.

The present invention discloses a tilt angle adjustment structure, a lens assembly and a photographic device, wherein the tilt angle adjustment structure comprises a fixed part, a floating part, a plurality of rolling support bodies, a magnetic structure and a height adjustment structure; the floating part and the fixed part are arranged relative to each other, and one of the floating part and the fixed part is a load-bearing mounting part; a plurality of rolling support bodies are arranged on the load-bearing mounting part and are located between the fixed part and the floating part, and are used to support the floating part on the fixed part, and at least part of the plurality of rolling support bodies are arranged as height-adjusting rolling support bodies; the magnetic structure is arranged between the fixed part and the floating part; the height adjustment structure is arranged between the load-bearing mounting part and the height-adjusting rolling support body, and is used to adjust the height of the height-adjusting rolling support body protruding from the load-bearing mounting part; one or more height-adjusting rolling support bodies are adjusted by the height adjustment structure to correct the tilt of the lens, and the correction operation is simple and easy to implement, thereby improving the correction efficiency and thus improving the production efficiency.

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.

The utility model belongs to the technical field of vision correction lens suspension, and particularly discloses a vision correction lens suspension device which is characterized in that a fixed frame is arranged on the outer side of a glasses frame, lenses are arranged on one side of the fixed frame, a movable frame is arranged on one side of the lenses, and limiting grooves are formed in one side of the fixed frame and one side of the movable frame; a groove is formed in the outer side of the glasses frame, and a connecting piece is fixedly arranged in the groove; the grooves are buckled towards the outer side, so that the clamping grooves in the movable frame are separated from the protruding blocks on the fixed frame, lenses needing to be tried on are placed in the limiting grooves, the limiting grooves in one side of the movable frame are aligned with the lenses, the clamping grooves are aligned with the protruding blocks, the movable frame is pressed, and the clamping grooves in the outer side of the movable frame are clamped with the protruding blocks on the outer side of the fixed frame. The problems that lenses need to be replaced repeatedly due to different myopia degrees of people so as to ensure that accurate lenses are used for correction, but time is wasted and customer experience is reduced due to the fact that the lenses are repeatedly mounted and dismounted in the testing process are solved.

A digital camera comprising a digital image sensor and at least one corrective lens element configured to reduce a blurring of an image in a horizontal or vertical dimension on the digital image sensor. The digital image sensor may be larger than a 28 millimeter diagonal.

The embodiment of the invention provides near-eye display equipment, and relates to the technical field of augmented reality. The near-to-eye display equipment comprises a mirror frame, an imaging assembly and a correction structure, the imaging assembly comprises a light machine and a display lens which are arranged on the frame, and the light machine can emit light towards the display lens along a set light path; the display lens is provided with an environment side and a user side which are opposite, and the display lens can obtain light rays from the light machine and can emit light towards the user side along a set light path; the correction structure comprises a mounting frame and a correction lens; the mounting rack is detachably connected with the glasses frame; the correction lens is arranged on the mounting rack, and is positioned on the user side of the display lens when the mounting rack and the lens frame are fixed. According to the invention, the image formed by the near-eye display device on the retina of the user is clearer, and the watching effect of the user wearing the near-eye display device is improved.

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.

The utility model discloses an optical correction lens with an anti-counterfeiting two-dimensional code, which comprises a lens body, at least one anti-counterfeiting two-dimensional code is arranged on the convex surface of the lens body, and an antireflection film layer is arranged on the surface of the anti-counterfeiting two-dimensional code. Compared with the prior art, the surface of the anti-counterfeiting two-dimensional code is provided with the anti-reflection film layer, so that the anti-counterfeiting two-dimensional code has an anti-reflection effect, the anti-counterfeiting two-dimensional code is easier to read under different environment conditions, is not influenced by external factors, is simpler and more convenient to scan, avoids the conditions that the anti-counterfeiting two-dimensional code cannot be scanned and read and the like, reduces the complaint degree of consumers, and increases the satisfaction degree of commodities.

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.

The utility model discloses a lens with an ultrathin anti-ultraviolet high anti-reflection optical film. The lens comprises a lens base material and an anti-ultraviolet film composite layer, a bonding layer is arranged on the convex surface of the base material; an anti-ultraviolet film composite layer is arranged on the bonding layer, the anti-ultraviolet film composite layer is of an eight-layer structure formed by alternately overlapping trititanium pentoxide and silicon dioxide, the eight-layer structure is sequentially arranged from the concave surface of the base material to the convex surface of the base material, the first layer is 21.9 nm, the second layer is 23.88 nm, the third layer is 78.4 nm, the fourth layer is 28.17 nm, the fifth layer is 30.77 nm, the sixth layer is 61.53 nm, the seventh layer is 33.576 nm, and the eighth layer is 119.452 nm; and an oil-proof layer is arranged on the anti-ultraviolet film composite layer. The thin film is stable in optical performance, free of aging and yellowing phenomena, precise and controllable in preparation process, high in yield and short in period from design to production change, and economic benefits are greatly improved. The product can effectively block more than 95% of UVA waveband ultraviolet rays, the transmittance of light waves in other wavebands is up to 90%, and the product is particularly suitable for being made into correction lenses such as myopia lenses, hyperopia lenses and aged lenses.

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