11 results about "Spherical power" patented technology

The utility model discloses a microstructure out-of-focus lens capable of reducing phase mutation at the periphery of a microstructure, which comprises a substrate and a functional area adsorbed on the substrate, the functional area comprises a central area and an out-of-focus functional area, the out-of-focus functional area surrounds the central area, the out-of-focus functional area comprises a plurality of microstructures, and the microstructures are arranged in the central area. The periphery of each microstructure is surrounded by a phase mutation reduction area, the phase mutation reduction areas cover the peripheries of the microstructures and local areas of the microstructures, the phase mutation reduction areas are arranged outwards in the radial direction by taking the centers of the microstructures as original points, the initial positions are not lower than 0.2 times of the diameters of the microstructures, and the final positions are not higher than 3 times of the diameters of the microstructures; and structures for preventing direct transmission of light rays are distributed in the phase mutation reduction area. According to the microstructure out-of-focus lens capable of reducing the peripheral phase mutation of the microstructure, provided by the utility model, the fundus high-frontal spherical power and cylindrical power caused by the peripheral phase mutation of the microstructure can be reduced, the comfort of a wearer is improved, and the myopia management efficiency is improved.

1. Name of the product in this design: Intelligent Surface Measuring Instrument. 2. Purpose of this design: To measure and test the optical properties of lenses, such as spherical power, cylindrical power, and prism power. 3. The key design points of this product are: the shape of design 1, and the shapes, colors, and combinations of design 2 and 3. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design. 6. Other situations requiring explanation: Other explanation: Designs 2 and 3 for which protection is sought include color.

A near-eye display system includes: a first corrective optical element having a first power contribution operable to converge or diverge a real-world image-bearing beam to a first focus distance before an eye box, and a second corrective optical element having a second power contribution operable to converge or diverge the real-world image-bearing beam to a second focus distance before the eye box; and a second correction optical element disposed between the first correction optical element and the eye box. The second corrective optical element has a spherical power contribution operable to converge or diverge the virtual and real world image bearing beams to a second focus distance before the eye box. The first correction optical element has a first correction center, and the second correction optical element has a second correction center.

The optical assembly includes a support structure, several lens elements configured to provide overall cylindrical and spherical power. At least one actuating unit 8 is configured to laterally shift a

The application belongs to the technical field of computers and relates to an intelligent lens data management method, which comprises the following steps: obtaining the unique identification, the degree step unit and the degree range information of a lens to be managed; configuring a two-dimensional rectangular coordinate system with spherical power and cylindrical power as coordinate axes according to preset coordinate axis configuration information; generating a target visualized graph corresponding to the lens to be managed in the two-dimensional rectangular coordinate system according to the degree range information; determining effective degree information corresponding to the lens to be managed according to the degree step unit and the vertex coordinate set of the target visualized graph; and storing the target visualized graph and the effective degree information in association with each other according to the unique identification. The application also relates to an intelligent lens data management system, a computer device and a storage medium. The application defines the available degree combination range of a lens through a coordinate system and a visualized graph, thereby effectively improving the management efficiency of lens data.

An apparatus may include a viewing optic. The viewing optic may include a first rotatable phase plate, a second rotatable phase plate, and an adjustable focus device. The viewing optic may be configured to image light from a display, the imaged light having a spherical power, a cylindrical power, and a cylindrical axis. The spherical power, the cylindrical power, and the cylindrical axis of the imaged light may be controlled by adjusting the adjustable focus device, rotating the first rotatable phase plate, and rotating the second rotatable phase plate. Other devices, apparatuses, systems, and methods of manufacture are also disclosed.

The invention provides an rs10045697 related SNP (Single Nucleotide Polymorphism) marker combination for predicting high myopia risk and susceptibility based on an equivalent spherical mirror and application of the rs10045697 related SNP marker combination, and relates to the field of biological medicines. Specifically, a key SNP marker rs10045697 and a plurality of SNP loci related to high myopia are screened based on equivalent spherical power in a high myopia queue through genome-wide association study (GWAS), and a model constructed based on the SNP marker combination can realize risk stratification and susceptibility detection of high myopia. The method is suitable for ophthalmology screening, high-risk group identification and accurate prevention and control intervention, and has important clinical transformation value.

The system comprises three optical elements arranged along an optical axis, each optical element having a different cylindrical axis and a variable cylindrical power. The three elements together form a composite optical element having an overall spherical power (SPH), a cylindrical power (CYL) and a cylindrical axis (Axis) which can be varied according to a prescription (Rx).

Systems and methods for variable astigmatism correction in a head mounted display are disclosed. An apparatus may include viewing optics. The viewing optics may include a first rotatable phase plate, a second rotatable phase plate, and an adjustable focus device. The viewing optics may be configured to image light from the display, the imaged light having a spherical power, a cylindrical power, and a cylindrical axis. The spherical focal power, the cylindrical focal power and the cylindrical axis of the imaging light can be controlled by adjusting the adjustable focal length device, rotating the first rotatable phase plate and rotating the second rotatable phase plate. Other apparatus, devices, systems, and methods of manufacture are also disclosed.

This invention relates to the field of progressive multifocal lens (PAL) design and manufacturing technology, specifically disclosing a method and system for designing freeform surfaces of progressive multifocal lenses. This method employs a curvature superposition (CS) algorithm instead of the traditional differential geometry (DG) algorithm, resulting in better consistency between the spherical power distribution and the design values. Based on this, a fast Fourier transform (FFT) is used to optimize the initial freeform surface, effectively reducing unwanted astigmatism and expanding the progressive corridor width, significantly enhancing visual function and wearing comfort. The manufactured product successfully replicates the simulated optical performance and maintains optimized characteristics even when combined with standard cylindrical astigmatism correction, proving the method's practicality and feasibility. This design method, combining the CS algorithm and FFT filtering, effectively improves the optical performance and wearing comfort of PAL, providing a new path for PAL design and optimization.

The invention relates to a retina peripheral defocus detection method and system in the technical field of optical detection, and the method comprises the following steps: driving a moving lens to a preset fogging position, and guiding a user to perform fogging relaxation; keeping a fogging relaxed state, and controlling the mobile lens to execute diopter scanning from a preset fogging position according to a preset step length; controlling the movable lens to axially move within the diopter measurement range at a preset step length, acquiring an image stack after each axial movement to obtain a second image sequence, performing registration processing, identifying center coordinates of all projection light spots, and delimiting a region of interest; calculating a definition evaluation value in each region of interest, and calculating a spherical power; according to the method, astigmatism degree calculation and astigmatism angle calculation are carried out to obtain astigmatism degrees and astigmatism axial positions, the astigmatism degrees and the astigmatism axial positions are mapped to a retina coordinate system, a continuous retina peripheral defocus topographic map is output, and the problem that an existing peripheral defocus detection method excessively depends on fundus natural textures, so that peripheral measurement precision is poor is solved.