11 results about "Lens fitting" patented technology

The utility model discloses a camera lens protection mechanism belongs to camera lens accessories field, including camera main part, one side fixed connection of camera main part has lens body, the outside of lens body is wrapped with protection subassembly, is equipped with connecting assembly on the one side of protection subassembly to camera main part, protection subassembly is including the protection frame of the sleeve setting in the outside of lens body, the inside fixed connection of protection frame has the inside ring of wrapping in the outside of lens body, this camera lens protection mechanism, through setting up by drive motor, transmission screw, moving frame and linkage board constitute transmission system, can automatic control the opening and closing of two baffle, and user need not manual operation, can open baffle quickly when needing shooting, can close again after shooting ends, effectively avoided because manual operation is troublesome and missed the opportunity problem when shooting, greatly reduced the time of lens exposure in the dangerous environment such as dust, water vapor etc.

Computer-implemented tools to assist a clinician in selecting a lens or other optical element for an optimal patient treatment, such as correction, based on both the optical properties of the patient's eye and certain patient-specific use-case information such as viewing behavior or viewing preferences, or to effect treatment such as to control myopia progression. Clinicians, eye care professionals and others can provide patient-optimized lens fitting or design by use of the tools.

The invention discloses a lens fitting device and method, and the device comprises a measurement assembly which is used for obtaining the position data of the fitting surface of an upper lens and a lower lens through a plurality of measurement points; the leveling assembly is used for adjusting the postures of the upper lens and the lower lens; the control assembly is connected with the measuring assembly and the leveling assembly and can control the leveling assembly to act based on the position data so that the attaching surfaces of the upper lens and the lower lens can reach the preset parallelism. Multi-point position data acquisition is carried out on the binding face of the upper lens and the lower lens through the measuring assembly, so that the control assembly can obtain complete surface form information, the parallel state of the current binding face is accurately judged, and the adjustment amount is calculated. And the leveling assembly completes corresponding attitude correction according to the instructions. Through the cyclic process of measurement, calculation and execution, it can be ensured that the fitting surfaces of the upper lens and the lower lens reach the required parallelism, and the problem of insufficient fitting precision caused by incomplete measurement data is solved.

This invention provides a method for rating the corrective effect of corneal topography after orthokeratology. It utilizes a mobile image acquisition system to collect corneal topography images of the user one month after lens wear. In a data segmentation and processing system, a deep learning model segments the effective optical zone and pupil within the corneal topography image. Medical indicators such as eccentricity, defocus, and effective defocus range are calculated and rated according to evaluation criteria. The results are finally output to visual hardware. This invention provides a method for rating the corrective effect of corneal topography after orthokeratology. By leveraging the segmentation capabilities of a deep learning model, the effective optical zone and pupil in the corneal topography image can be accurately segmented, and the corneal topography can be rated based on calculated medical indicators. This avoids subjective interference from the operator during lens fitting, and overall, this invention can significantly reduce the fitting workload of optometrists.

The invention belongs to the technical field of digital lens accessories, and particularly relates to a safety protection device and method for a zoom visual lens. One end of the positioning plate is slidably connected with a linkage plate, an extension spring is arranged between the inner wall of the linkage plate and one end of the positioning plate, the other end of the positioning plate is fixedly connected with a lens protection plate, and the bottom end of the inner wall of the lens protection plate is further provided with a mounting groove. The zoom visual lens of the smart phone is sleeved and protected through the three lens protection assemblies, and then air flow is transmitted to the lens protection assemblies, the supporting assembly and the air bag ring through the air transmission assembly, so that the supporting assembly cleans the environment near the zoom visual lens. The air bag ring forms a buffering effect surrounding the zoom visual lens after being inflated, and then an operator manually rotates a plastic gear, so that the three groups of lens protection assemblies rotate to guide the air flow transmitted by the air transmission assembly, and the mirror surface of the zoom visual lens is cleaned and dried.

The invention is suitable for the technical field of lens matching optimization, and particularly relates to an out-of-focus lens structure parameter optimization method and system fusing eyeball adaptation parameters, and the method comprises the steps: recording the eyeball adaptation parameters of a user and out-of-focus lens structure parameters, and constructing a lens matching database; recording eyeball adaptation parameters according to a time sequence, constructing a change curve of each parameter, and generating a parameter change prediction function; generating a prediction parameter, and comparing the prediction parameter with a recently collected eyeball adaptation parameter to obtain a parameter difference value; constructing a basic lens structure parameter, and correcting the basic lens structure parameter based on the parameter difference value to obtain an out-of-focus lens parameter of the lens fitting. By constructing a systematic basic lens structure parameter generation process, accurate conversion from original eyeball parameters to manufacturable lens structures is realized, the accurate adaptation effect of the lenses in the initial wearing stage is effectively guaranteed, and a solid technical foundation is laid for subsequent dynamic optimization.

This invention relates to the field of data processing technology, and more particularly to an integrated learning method for orthokeratology lens fitting based on corneal feature attention. The method includes: S100, acquiring raw input data; S200, a feature subset module dividing the raw input data into multiple training subsets using a medical prior grouping strategy or a dynamic importance grouping strategy, and using these multiple training subsets to train a base learner, which then outputs its predicted values; S300, the raw input data entering a feature attention module to obtain a final attention fusion result; and S400, training a meta-learner based on the base learner's predicted values ​​and the final attention fusion result, which then outputs its final prediction result. This invention improves the accuracy of orthokeratology lens fitting.

The utility model relates to a progressive multifocal lens fitting experience frame, and belongs to the technical field of lens fitting. Comprising an interpupillary distance adjusting mechanism used for adjusting the interpupillary distance corresponding to fitting mirror frames on the two sides of the whole fitting experience frame, the two fitting mirror frames are symmetrically and fixedly welded to the two sides of the interpupillary distance adjusting mechanism and used for installing lenses with different luminosities, and a clamping mechanism is further connected to the middle position of the interpupillary distance adjusting mechanism. The clamping device is used for clamping the whole fitting experience frame on glasses of a fitting person; the interpupillary distance adjusting mechanism comprises an adjusting mechanism middle layer clamped in the middle, a metal cover plate and an interpupillary distance marking bottom plate are arranged on the upper surface and the lower surface of the adjusting mechanism middle layer respectively, and the middle layer, the interpupillary distance marking bottom plate and the metal cover plate are fixedly connected into a whole through locking screws.

The utility model relates to the technical field of optometry glasses, in particular to a glasses testing frame and a glasses testing suite. The trial glasses frame comprises a framework, glasses legs, two lens frames and two rotating units; the frame is provided with two spectacle rings, and the spectacle legs are connected with the frame; the two lens frames correspond to the two lens rings respectively, the two lens frames correspond to the two rotating units respectively, and each lens frame is rotationally connected to the corresponding lens ring through the corresponding rotating unit. The lens testing frame is applied to the lens testing suite, is simple in structure and convenient to use, and can be convenient for an operator to rotate and adjust the position of the lens according to requirements in the lens testing process, so that the adaptation degree in the lens fitting process can be improved, and the lens testing efficiency is improved.

The application relates to a 3D lens fitting method, a fitting device and a 3D lens production method. In the 3D lens fitting method, a plurality of first soft glue points are tightly attached to a convex surface, a plurality of second soft glue points are tightly attached to a concave surface, a first fitting area where the plurality of first soft glue points are tightly attached to the convex surface and a second fitting area where the plurality of second soft glue points are tightly attached to the concave surface are taken as visual features and recognized by a visual scanner to obtain a first group of point clouds and a second group of point clouds, fitting path information is obtained after the first group of point clouds and the second group of point clouds are fitted, and the convex surface and the concave surface are adjusted in spatial position and posture and are mutually fitted by using the fitting path information. In this way, the plurality of first fitting areas and the plurality of second fitting areas are used to intuitively reflect the convex surface and the convex surface curved surface form, the effective fitting of the middle curved surface area of the convex surface and the concave surface is preferentially ensured, better fitting effect is achieved, air bubbles are avoided, and the product quality is improved.

This utility model discloses a high-precision lens fitting fixture structure, relating to the field of optical lens processing technology. It includes a support platform and a fixture body. An electric slide rail A is mounted on the upper surface of the support platform. A movable plate is slidably mounted on the outer surface of the electric slide rail A. A connecting plate is mounted on the upper surface of the movable plate, and an electric slide rail B is mounted on the outer surface of the connecting plate. This utility model allows the corresponding fixture body to be quickly pushed out of the placement slot using an electric push rod B, facilitating subsequent replacement operations. The combined use of an electric telescopic rod A and an electric push rod A allows the fixture body to be replaced into the slot, enabling different fixture bodies to adapt to lenses of different specifications, improving processing flexibility and accuracy. The combined use of an electric telescopic rod C and a push block allows the clamping block to stably fix the placed lens, ensuring that the lens does not move during processing, thereby improving processing accuracy and lens quality.