38 results about "Eye structure" patented technology

The invention discloses a high-vibration-resistant blind hole fisheye structure, and relates to the technical field of connectors, the high-vibration-resistant blind hole fisheye structure comprises a fisheye terminal, the fisheye terminal is provided with an insertion part, a shoulder part, a rod part and a tail part, and the insertion part, the shoulder part, the rod part and the tail part are sequentially arranged in a linear crimping manner along a single direction; wherein the insertion part is sequentially composed of a pre-insertion area, an insertion area, a transition area, a mechanical holding area and a fisheye strength area, the pre-insertion area is used for providing a guiding effect to insert the PCB, the insertion area forms an acting force, the transition area is used for connecting the insertion area and the mechanical holding area, the mechanical holding area forms an anti-vibration effect, and the fisheye strength area is used for providing terminal strength. The insertion area, the transition area and the mechanical holding area form a fisheye groove with an anti-vibration effect; guide grooves are formed in the inner walls of the fisheye grooves, and elastic supporting assemblies for keeping the distance between every two adjacent guide grooves are arranged between the adjacent guide grooves. According to the invention, the blind hole fisheye structure has good guidance quality, forms retention, insertion and anti-vibration acting forces, and is suitable for a high-vibration environment.

A fisheye terminal structure comprises a butt joint piece, a limiting piece and a plug connector. And the butt joint piece is arranged to be electrically connected with a terminal of a counter electric connector. The limiting piece is connected to the butt joint piece, has the width larger than the diameter of the insertion hole and abuts against the circuit board. The plug connector is connected to the limiting piece, is provided with a fisheye structure and is arranged to be inserted into a plug hole of the circuit board, the fisheye structure comprises a plug part, a connecting part and a deformation abutting part, the plug part and the connecting part are arranged at the two opposite ends of the deformation abutting part respectively, the connecting part is connected to the limiting piece, and the deformation abutting part is connected to the limiting piece. The two arc-shaped stress deformation bodies of the deformation abutting part are connected with each other to form a symmetrical structure with a fisheye hole in the center. The joint of the inserting part and the arc-shaped elastic deformation body has a first curvature radius, the part, close to the inserting part, of the arc-shaped stress deformation body has a second curvature radius, the part, close to the connecting part, of the arc-shaped stress deformation body has a third curvature radius, the second curvature radius is larger than the third curvature radius, and the third curvature radius is larger than the first curvature radius.

The present invention provides a cleaning sheet that offers excellent foreign matter removal performance without the concern of adhesive residue. [Solution] In one example, the cleaning sheet 1 has a base material 2 and a resin layer 3 provided on the surface of the base material, and a moth-eye structure is formed in the resin layer 3. The water contact angle of the surface on which the moth-eye structure is formed may be 25° or less, or 110° or more, and is not particularly limited.

In certain embodiments, a system for detecting an intraocular lens (IOL) in an image of an eye includes an imaging system and a computer system. An imaging system generates an image of the eye. The eye has a plurality of structures, including IOLs. The computer system receives an image of the eye from the imaging system and detects one or more Purkinje images in the image of the eye. The Purkinje image includes reflections from the eye structure. The computer system uses the Purkinje image to detect one or more surfaces of the IOL and determines the location of the IOL from the surfaces of the IOL.

To provide an image processing method for analyzing choroidal blood vessels.SOLUTION: The method includes a step of acquiring an OCT image of a subject's eye by optical coherence tomography (OCT), a step of extracting a region other than a structure of the subject's eye in the OCT image, and a step of generating a first display screen in which position information on a scan position for acquiring the OCT image is superimposed on the region.SELECTED DRAWING: Figure 10

This invention belongs to the field of bionic robotics technology, specifically disclosing a bionic eye based on a two-degree-of-freedom parallel mechanism driven by artificial muscles. It includes a two-degree-of-freedom flexible driving parallel mechanism with a bionic eye structure on it. The bionic eye structure includes a flexible eyeball. The two-degree-of-freedom flexible driving parallel mechanism includes symmetrically arranged rectus muscle flexible bodies and rectus muscle ties connected to the flexible eyeball. The end of the rectus muscle flexible body has a common tendon ring platform that cooperates with the rectus muscle ties. This invention, by using a ball-joint connected bionic eye structure, combined with the four artificial muscles of the rectus muscle flexible body in the two-degree-of-freedom flexible driving parallel mechanism, enables the bionic eye to possess two movement postures: yaw and pitch. By conforming to the physiological structure and main movement patterns of the human eyeball, and through the stepless adjustment of the rectus muscle flexible body by the rectus muscle ties, precise two-degree-of-freedom adjustment of the bionic eye can be achieved.

This application provides a pupil recognition method, system, medium, product, and terminal based on center localization. It performs a horizontal gradient transformation operation on distortion-corrected human eye image data to generate eye gradient amplitude image data. Through gradient transformation, it extracts edge features of the pupil and iris regions, effectively separating the pupil edge from complex eye structures such as eyelid occlusion, eyelash projection, and iris pigment spots / crypts, avoiding misidentification of these interferences as pupil edges and improving the accuracy of pupil edge feature recognition. Combining the distortion-corrected human eye image data and eye gradient amplitude image data, it performs a pupil template matching operation based on the Hough circle detection algorithm. By leveraging the edge features of the gradient amplitude image, it enhances the matching accuracy between the pupil edge and the template, effectively ensuring the continuity and integrity of pupil contour recognition, further improving the reliability and accuracy of pupil measurement results.

The utility model discloses a kind of integrated air conditioner outdoor unit installation maintenance and safety device of emergency escape, comprising: escape platform, escape platform and structural column anchoring connection;Structural beam, escape platform is set at the just above of structural beam with predetermined distance interval, and the space between structural beam and escape platform forms air conditioner position;Lifting eye, part of lifting eye is embedded in the inside of structural beam, and lifting eye and the corresponding position of lower escape platform position correspond.This utility model sets up escape platform on structural column, and forms sandwich space with structural beam to form air conditioner position, and embeds lifting eye structure on structural beam, and the part of lifting eye that exposes structural beam corresponds with the escape platform position of next floor, so that safety rope can be fixed by lifting eye, which can be used for installation, cleaning, disassembly and other operations of air conditioner outdoor unit, and can be used for refuge and escape in emergency, to provide effective self-help approach for residents, improve rescue rate.

The relative positions of a first low-reflection layer and a second low-reflection layer are variable in a bendable portion. A main low-reflection structure has, on a surface facing a secondary low-reflection structure, an asperity pattern and a moth-eye structure. The asperity pattern has a sine-wave shaped surface in a sectional view. A single period of a sine wave constituting the sine-wave shaped surface is equal to an integral multiple of the width of a single pixel of a display device in a direction where the asperity pattern is arranged.

The invention provides a three-dimensional high-frequency ultrasonic ophthalmic examination device and method, equipment and a medium. The three-dimensional high-frequency ultrasonic ophthalmic examination device comprises a mechanical arm, an ultrasonic probe and a host, wherein the ultrasonic probe is clamped at the tail end of the mechanical arm; in the dragging mode, the mechanical arm moves to adjust the position of the ultrasonic probe; in an imaging mode, the mechanical arm locks the joint so as to keep the position of the ultrasonic probe unchanged; and in the scanning process, the host sends a trigger signal to the ultrasonic probe, so that the ultrasonic probe performs rotary scanning imaging, records the real-time angle of the micro motor, emits an acoustic beam and records an echo signal until the whole scanning process is completed. And after scanning is finished, signal processing and image reconstruction are carried out. According to the invention, scanning and reconstruction of eyeballs are realized by using a linear array ultrasonic probe rotation mode. The result can visually present the spatial form of the eye structure and the relationship between the eye structure and surrounding tissues, the limitation that traditional two-dimensional ultrasound depends on doctor imagination splicing is changed, and the diagnosis precision of diseases such as glaucoma, intraocular tumors and complex retinal detachment is improved.

This invention belongs to the field of biomimetic robot technology, specifically disclosing a three-degree-of-freedom parallel biomimetic eye actuator based on flexible artificial muscle actuation. It includes a hemispherical biomimetic eye structure, on which a three-degree-of-freedom flexible body actuation structure is mounted. At the end of the three-degree-of-freedom flexible body actuation structure furthest from the hemispherical biomimetic eye structure, there is a base platform connected to the hemispherical biomimetic eye structure via a ball joint. A trolley structure that cooperates with the three-degree-of-freedom flexible body actuation structure is mounted on the base platform. This invention uses a universal ball joint to connect the hemispherical biomimetic eye structure to the base platform, and coordinates with the flexible eye muscle of the three-degree-of-freedom flexible body actuation structure for actuation. By adjusting six artificial muscles (rectus and oblique muscles), the biomimetic eye using this actuator can achieve yaw, pitch, and roll motion postures, meeting the requirements of a compact structure, high precision, low noise, and high motion flexibility.

A method for manufacturing anti-reflective optical glass and its products, wherein the method for manufacturing anti-reflective optical glass involves having several diamond-cut lines on a carrier, and then centrifugally and elastically polishing and grinding the surface of the optical glass with the diamond-cut lines to create moth-eye structure grooves on the surface of the optical glass, thereby reducing light reflection and increasing light transmittance.

The application discloses a kind of methods for detecting fatigue state variable using driver eye image, comprising the following steps: S01, construct a kind of priori Gaussian model, for expressing eye structure;S02, the priori Gaussian model in S01, for each eyeball or eye white, set its two-dimensional distribution such as expression;S03, design Gauss EyeNet network;S04, after obtaining segmentation map in S03 step, fatigue state variable is solved.The application proposes a kind of full convolution segmentation network Gauss EyeNet fusing Gaussian distribution according to the characteristics of eye tissue structure distribution, constructs fatigue state variable feature by pixel-level analysis eyeball and eye white relationship, and reduces the influence brought by individual difference by normalization strategy.Gaussian strong priori hypothesis enhances the stability of detection, compared with the means of traditional classifier, the method of the application can accurately express a variety of fatigue state variables, and the extracted index can better distinguish between wakefulness and fatigue.

The utility model relates to a twisting spindle technical field especially a kind of twisting spindle with cat eye support structure, a kind of twisting spindle with cat eye support structure, including plastic yarn tube, the spindle rod that is set in the plastic yarn tube, the spindle base is installed in the lower end of the plastic yarn tube, the motor mounting seat is installed in the lower end of the spindle base, the motor is installed in the lower end of the motor mounting seat, the cat eye structure for supporting and surrounding plastic yarn tube is set in the upper and lower both ends wall of the plastic yarn tube.The utility model is connected with a spring on the side end of upper cat eye seat and lower cat eye seat respectively, a cat eye support is connected in the side end of the spring, cat eye support moves laterally by elastic force, and closely adhere to the inner wall of plastic yarn tube, form support, and make plastic yarn tube and spindle rod be connected, plastic yarn tube and spindle rod are conveniently and quickly disassembled and replaced, plastic yarn tube is replaced.

The utility model belongs to the technical field of robot bionics, and particularly relates to a seven-degree-of-freedom series-parallel bionic eye structure. The series-parallel connection bionic eye structure comprises a base, the neck parallel connection device and the eye movement device are sequentially installed on the base from bottom to top. The neck parallel connection device comprises a neck lower platform installed on the base, a neck rear support installed on the neck lower platform and a neck upper platform rotationally installed at the upper end of the neck rear support. The first muscle mechanism is arranged between the neck upper platform and the neck lower platform; the second muscle mechanism is arranged between the neck upper platform and the eye movement device; the first muscle mechanism drives the eye movement device to rotate up and down and / or swing left and right and / or shake the head, and the second muscle mechanism drives the eye movement device to rotate left and right. According to the utility model, the neck parallel connection device and the eye movement device are connected in series, so that the whole working space is enlarged, namely, a target position is tracked in a maximum range.

The invention provides a staring direction determination method and system, augmented reality equipment and a storage medium, and the method employs an angle multiplexing coupling microstructure to achieve the coupling of a plurality of groups of near-infrared echoes of different incident angles and the output of a plurality of paths of distinguishable waveguide views, and combines the sub-aperture views collected by a light field camera in parallel. The number of views and angle diversity are effectively increased. Through joint calibration and registration, unification of a view coordinate system and determination of view calibration parameters, the accuracy of the geometrical relationship between different views is ensured, the parallax calculation precision is improved, and the depth estimation error is reduced. And based on pixel axial depth calculation of view calibration parameters and projection of eye image points to a three-dimensional space to generate a point cloud model, three-dimensional reconstruction of an eye structure is realized. On the basis of pupil boundary detection and ellipse fitting, geometric parameters of pupils are obtained, gaze resolving and normalization are carried out according to the geometric parameters, gaze vectors are obtained, and the recognition accuracy of the eye gaze direction when a user wears augmented reality equipment is remarkably improved.

The application discloses a haze-adjustable super-wear-resistant composite structure optical film and a preparation method thereof, and the method comprises the following steps: S1, preparing a moth-eye template with a moth-eye structure; S2, preparing a moth-eye-grid composite structure master plate with a grid structure and a moth-eye structure; S3, obtaining a sub-plate of the moth-eye-grid composite structure master plate through a chemical electroforming process; S4, preparing a moth-eye-grid composite structure film with the same structure as the moth-eye-grid composite structure master plate; S5, obtaining the haze-adjustable super-wear-resistant composite structure optical film through surface plating; and S6, process optimization and adjustment. The micro-nano size composite structure optical film is constructed by using ultraviolet light curing nano-imprinting technology and physical / chemical vapor deposition, the moth-eye structure is used to replace the multilayer anti-reflection film, good optical anti-reflection effect can be obtained, and the preparation of the wide-range haze-adjustable super-wear-resistant anti-reflection film product can be realized.

Systems, devices and methods for performing deep learning process to determine the characteristics of structures of the eye. Deep leaning, imaging devices and methods for laser and phacoemulsification operations. An integrated imaging device, laser-ultrasound, including femto-phaco, system and a computer vision device. Methods of training and using computer vision devices in ophthalmic treatment systems and therapies.

This invention provides an all-sky polarization sensing device and heading calculation method based on a curved surface biomimetic compound eye, relating to the fields of biomimetic navigation and optical sensing technology. The device includes: a curved substrate; several polarization imaging units fixedly arranged in a close-packed hexagonal array on the outer surface of the curved substrate; and a processing unit electrically connected to all polarization imaging units. The curved substrate includes first-level, second-level, and third-level sub-surfaces, each with a textured layer, forming a fractal moth-eye structure. The method employs an online self-calibration method based on field-of-view overlap constraints to correct the original image data acquired by each polarization imaging unit; maps all corrected image data to a virtual celestial coordinate system to generate an all-sky polarization angle distribution map; when some units are obstructed, the polarization information of the obstructed area is reconstructed using an interpolation algorithm, thereby calculating the absolute heading angle of the carrier. This invention achieves highly robust and high-precision all-weather autonomous navigation.

Systems and methods for performing laser cataract surgery, for using a biometric system to determine a material property of a structure of the eye, laser pulses in a laser shot pattern having different powers. A therapeutic laser, and laser delivery system having the capability to vary the power of the laser beam.

The invention discloses an adult rat fine eye model and dose calculation method based on Monte Carlo. The method comprises the following steps: acquiring eye structure information of an adult rat; comparing and integrating the structure information and the literature data, and performing experimental verification on data with differences to obtain verified structure parameters; in Monte Carlo simulation software, an adult rat eye three-dimensional geometric model is constructed, and material parameters are set for different eye tissues in the three-dimensional geometric model; setting the type, energy, direction and spatial distribution of an incident particle beam in Monte Carlo simulation software, establishing a coordinate system by taking an eye axis of the three-dimensional geometric model as a reference direction, and executing particle transport and interaction simulation to track the transport process of primary particles and secondary particles thereof in the three-dimensional geometric model; a dose sensitive unit is provided, recording energy deposits within the volume of the lens, and normalizing the energy deposits based on the total mass of the lens to obtain an average absorbed dose of the lens.

The invention provides an ICL post-implantation structure prediction system based on 3D reconstruction. A 3D model of an eye structure of a patient can be reconstructed through OCT examination and UBM examination results before an ICL implantation operation. On the basis of a database and an algorithm in the system, ICLs of different shapes / sizes and implanted eye structures according to different operation schemes are simulated; the prediction result is analyzed, bad postoperative eye structures are avoided, and the optimal ICL shape and operation scheme in the prediction result are selected; after ICL implantation, 3D model reconstruction of the eye structure after ICL implantation is carried out through UBM examination and OCT examination results, the 3D model reconstruction and the 3D model of the eye structure of a corresponding patient before ICL implantation are jointly incorporated into a database, a prediction algorithm is corrected, and the accuracy of 3D reconstruction and prediction is further improved. The prediction system can help a surgeon to perform optimal selection of the operation mode according to different patient conditions before an operation, so that the operation effect is improved, and postoperative complications are avoided.

The utility model discloses an eye mat convenient to fix and install, which comprises an adhesion fixing structure, an eye mat structure is fixedly installed inside the adhesion fixing structure, the adhesion fixing structure comprises a flexible concave frame with a hollow structure inside, and adhesive glue is fixedly installed on the surface of the flexible concave frame. Meanwhile, through holes are formed in the surface of the flexible concave frame and the surface of the adhesive in a penetrating mode, pressing nails are installed in the through holes in a matched mode, the pressing nails and the through holes are arranged in an inserted and matched mode, and the eye rough mat structure comprises a first eye rough mat, a second eye rough mat, a third eye rough mat and an eye rough mat. The first eye webbings, the second eye webbings and the third eye webbings are arranged in the flexible concave frame, the first eye webbings, the second eye webbings and the third eye webbings are woven in a crossed mode to form an integral eye webbings body, and meanwhile the eye webbings body is fixedly installed in the flexible concave frame. Therefore, the problems that when the eye webbings are decorated or installed, the eye webbings need to be fixedly installed in an auxiliary fixing mode, and when the eye webbings are fixedly installed in a binding fixing mode, installation is troublesome are solved.

The utility model discloses a modularization firebrick mortise and tenon structure of splicing, concretely relates to firebrick technical field, including firebrick body, wherein, two outer walls of firebrick body are all provided with two mortise eyes, and two tenon heads are fixedly installed to the other two outer walls of firebrick body, and the tenon head is matched with mortise eye structure. The utility model discloses a tenon head and mortise eye cooperation, and the double reinforcement of positioning groove and positioning reinforcing strip, bevel tooth groove and bevel tooth block is combined, realizes steady splicing, and is convenient for construction installation and post -maintenance, reduces cost, can improve the heat -insulating and oxidation -resistant performance of firebrick simultaneously, reduces heat transfer and oxidation erosion, prolongs the service life of firebrick significantly, improves industrial production efficiency.

The utility model discloses a non -contact fundus mirror relates to non -contact fundus mirror technical field, and its technical scheme is: including the frame, the frame one side fixedly equipped with the connecting block, the connecting block one side fixedly equipped with the fixed axle, and the fixed axle outside is equipped with the connecting frame, and the connecting frame bottom is fixedly equipped with the sliding rod, and the sliding rod one side is fixedly equipped with the fixed plate, and the fixed plate is connected with the connecting frame between bearing and has the screw rod, and the screw rod outside fixedly is equipped with the rotating wheel, and the screw rod outside is equipped with the sliding frame through the thread, and the sliding rod is through the sliding frame and is connected with the sliding frame sliding, and the sliding frame one side is equipped with the connecting rod, and the connecting rod one side is fixedly equipped with the L type board, and the L type board one side is fixedly equipped with the fundus wide -angle mirror, and the utility model has the beneficial effect: user can easily adjust the distance between fundus wide -angle mirror and frame, and easily adjusts the focal length to adapt to the eye structure and the examination demand of different patients, and this design not only has improved the flexibility of examination, also greatly simplified the operation of adjusting the focal length.

The application belongs to the technical field of bionic robots, and specifically discloses a three-degree-of-freedom bionic eye driven by artificial muscles, which comprises a bionic eye structure, the bionic eye structure is connected with a three-degree-of-freedom flexible driving structure, the bionic eye structure is provided with a trolley structure matched with the three-degree-of-freedom flexible driving structure, and the trolley structure comprises a trolley support, and the trolley support is provided at both ends with a trolley roller matched with the three-degree-of-freedom flexible driving structure. The bionic eye structure and the three-degree-of-freedom flexible driving structure are connected through a spherical hinge, six artificial muscles of a rectus muscle flexible body and an oblique muscle flexible body are matched, and under the adjustment of the trolley structure, the bionic eye has three motion postures of yaw, pitch and roll, not only conforms to the physiological structure and motion form of primate eyeballs, but also can realize the flexibility and stable visual perception ability of primate eyeballs through bionics.

An authentication system may use a frequency modulated continuous wave sensor to send and receive a signal towards an eye of a user. The received signal may include information about the structure and material properties of the eye. The authentication system may use the information that is included in the received signal to determine whether the sent signal is directed to an eye, whether the eye is open or closed, and whether the user corresponding to the eye is a particular previous user.

The invention provides a pupil recognition method and system based on center positioning, a medium, a product and a terminal, and the method comprises the steps: executing a horizontal gradient transformation operation based on distortion-corrected human eye image data, generating eye gradient amplitude image data, extracting the edge features of a pupil and iris region through gradient transformation, and carrying out the recognition of the pupil. The pupil edge is effectively separated from complicated eye structures such as eyelid shielding, eyelash projection, iris pigment spots / crypts and the like, so that the interference is prevented from being misjudged as the pupil edge, and the accuracy of pupil edge feature recognition is improved. In combination with distortion-corrected human eye image data and eye gradient amplitude image data, pupil template matching operation is performed based on a Hough circle detection algorithm, and the matching precision of pupil edges and templates is enhanced by means of edge features of gradient amplitude images, so that the continuity and integrity of pupil contour recognition are effectively ensured, and the recognition accuracy is improved. And the reliability and the accuracy of the pupil measurement result are further improved.

The application discloses an eye imaging adjusting device, relates to the technical field of eye imaging, and mainly comprises an adjusting assembly and an auxiliary imaging device. The adjusting assembly comprises a guide rail, a target fixation object assembly and a convex lens. The target fixation object assembly and / or the convex lens is / are slidably installed on the guide rail. The distance between the target fixation object assembly and the convex lens can be adjusted by sliding the target fixation object assembly and / or the convex lens. The auxiliary imaging device is located on the side of the convex lens which is opposite to the target fixation object assembly. The auxiliary imaging device can reflect the visible light of the target fixation object assembly and allow the infrared rays of an imaging device to pass through. The application further discloses an eye imaging system comprising the above eye imaging device. The application can adjust and control while imaging one eye, so that the change of the eye structure during adjustment can be better explored by using the imaging device.

A surgical lead device, comprising an outer tube having a distal end formed with a needle tip, and a lead needle movably disposed in the outer tube, wherein a needle eye structure is formed at a proximal end of the lead needle; and during use, a suture thread passes through the needle eye structure, and the lead needle moves out from the outer tube toward the distal end, such that the needle eye structure together with the suture thread passes through the outer tube. Further provided in the present invention is a suture fixing system.