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14 results about "Visual optics" patented technology
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PCB defect detection method based on surface structure light three-dimensional reconstruction
The application discloses a PCB defect detection method based on a surface structure light three-dimensional reconstruction, belongs to the field of computer vision, optical detection and automation testing, and is used for solving the problem of PCB defect detection based on surface structure light three-dimensional reconstruction, and points are that phase shift codes and complementary gray code gratings are projected to a to-be-detected PCB board to obtain light intensity images of the to-be-detected PCB board; three-dimensional point clouds and shadow area mask images are obtained according to the light intensity images; according to the shadow area mask images, two-dimensional pixel coordinates corresponding to the shadow area are converted into three-dimensional coordinate points; the interpolation fitting method is used to complete the three-dimensional point clouds in the coordinate area of the three-dimensional coordinate points; PCB component point clouds and PCB substrate plane point clouds are separated; the PCB component point clouds are matched with standard point clouds, difference points between the PCB component point clouds and the standard point clouds are calculated under a given distance threshold, and if the number of the difference points is not less than a threshold number, then the component is defective.
Owner:DALIAN NATIONALITIES UNIVERSITY
A device for teaching eye optometry
PendingCN122266217ACosmonautic condition simulationsEducational modelsMechanical engineeringLight hole
The application discloses a kind of for eye visual optics teaching, including the device of inspection and optometry, the front end of inspection and optometry tube is equipped with light hole, bionic component includes the multiple fixed column of the one end of inspection and optometry tube inside near light hole setting, fixed column is evenly arranged along the inside of inspection and optometry tube, rotating and clamping outside meshing gear is equipped on fixed column, outside meshing gear outside fixedly connected with light shield, rotating and clamping inside meshing gear is equipped in inspection and optometry tube, inside meshing gear is engaged with all outside meshing gear;Bionic component can limit the light amount that enters the inside of inspection and optometry tube by the light hole of the front end of inspection and optometry tube, to improve the fidelity of inspection and optometry teaching process, further improve the training effect of device, when using bionic component, light will be irradiated on the lens of convex lens one end clamping, when light intensity is higher, the light shield of outside meshing gear outside fixedly connected will be driven by inside meshing gear and rotate inward, to reduce the aperture size surrounded by light shield center.
Owner:CHONGQING THREE GORGES MEDICAL COLLEGE
A high-resolution self-assembled dual quantum dot / graphene heterojunction broadband memristor, its fabrication method, and its application.
This invention discloses a highly self-assembled dual quantum dot / graphene heterojunction broadband memristor, its fabrication method, and its applications, belonging to the field of inorganic semiconductor technology. The method includes the following steps: mixing highly self-assembled cerium oxide quantum dot ink and PbS quantum dot ink with a graphene dispersion and stirring until homogeneous to form a uniformly loaded quantum dot / graphene dispersion; then using the quantum dot / graphene dispersion to construct a dual quantum dot / graphene heterojunction film on a silicon wafer surface, thus obtaining the dual quantum dot / graphene heterojunction broadband memristor. This invention overcomes the inherent limitations of the photoresponse range of single materials, achieving broadband optoelectronic memristor behavior in the ultraviolet to near-infrared bands. Simultaneously, the memristor of this invention exhibits rich synaptic plasticity under light pulse modulation, providing core support for constructing a novel integrated optoelectronic system for broadband sensing, storage, and processing. It possesses strong technical adaptability and industrialization prospects in cutting-edge fields such as bionic vision, optical neural networks, and intelligent sensing.
Owner:BEIJING TECH & BUSINESS UNIV
Machine vision optical system and camera module using the same
The application provides a kind of machine vision optical system and its application camera module, mainly by 7 lenses, the first lens is convex on object side, concave on image side, and the focal power is negative, the second lens is convex on object side, concave on image side, and the focal power is negative, the third lens is concave on object side, convex on image side, and the focal power is positive, the fourth lens is convex on object side and image side, and the focal power is positive, the fifth lens is convex on object side and image side, and the focal power is positive, the sixth lens is concave on object side and image side, and the focal power is negative, the seventh lens is convex on object side, concave on image side, and the focal power is positive, the number of lenses is reasonable, the structure is simple, by reasonably distributing the focal power of lens, effectively meet the design requirements of ultra-wide angle and miniaturization of optical system, the high-pixel machine vision recognition optical system configured by the application has the advantages of high pixel, strong resolution and ultra-wide angle design, compact structure, easy to process and install, further improve the imaging effect of the system equipment.
Owner:GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD
Zero-adjustment near vision optical system and method based on dynamic far point matching
The invention discloses a zero-adjustment near vision optical system and method based on dynamic far point matching, and relates to the technical field of visual optics and visual health. Through a quantitative formula F1 = F (infinity) + 1 / d, the near lens power F1 is customized for a user at a specific near working distance d, so that the eyeball adjusting load is zero when the user uses eyes at the distance. The system comprises a switchable optical lens group which is used for switching between the near correction state and the conventional foot correction far state. Meanwhile, a binocular alternate vision suppression module is integrated, and non-gazing eyes are out of focus through optical interference, so that the assembly load is eliminated. Further, the system may integrate an intelligent control unit, automatically switch optical states based on sensor data, and manage alternate suppression rhythms. According to the method, the visual state of zero adjustment load is introduced into the near-vision scene from the far-vision scene for the first time, and the problems of asthenopia and myopia progress caused by high-intensity short-distance eye use in the digital era are fundamentally solved.
Owner:SHANGHAI RUISHENG BIO-MEDICAL CO LTD
Camera calibration method and device, electronic equipment and storage medium
The invention discloses a camera calibration method, and belongs to the technical field of computer vision optical imaging. Obtaining a dense data set corresponding to each relative pose of the to-be-calibrated camera according to the stripe images collected by the plurality of relative poses; according to the dense data set corresponding to each relative pose, determining a re-projection error of the pixel of each relative pose; constructing a global objective function of the to-be-calibrated camera, and solving the dense data set corresponding to each relative pose through the global objective function to obtain a calibration result; according to a calibration result, determining a mixed weight of the pixel of each relative pose, and obtaining correction corresponding data of the to-be-calibrated camera; according to the correction corresponding data of the to-be-calibrated camera, distortion correction is carried out on the image collected by the to-be-calibrated camera, so that the generated correction field is continuous, smooth and free of splicing traces in the whole image range, and correction jump possibly occurring at the boundary of the fixed partition model is avoided.
Owner:BEIJING YICHEN TIMES TECH CO LTD
Movable visual optical lens fixing device
Owner:XINJIANG UYGUR AUTONOMOUS REGION INST OF MEASUREMENT & TESTING
Visual optical system and virtual reality device with visual optical system
Disclosed are a visual optical system and a virtual reality device with the visual optical system. The visual optical system includes a first lens, a composite film layer, a second lens, and a partially reflective film in sequence from a first side to a second side along an optical axis; where each of the first lens and the second lens has a positive refractive power; the composite film layer is arranged on the second side surface of the first lens, the composite film layer includes a polarizing reflective film and a quarter-wave plate, and the polarizing reflective film is located between the first lens and the quarter-wave plate; and the partially reflective film is arranged on the second side surface of the second lens, and the second side surface of the second lens is a convex surface and also a Fresnel surface.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD
Optical optometry system and subjective optometry unit
An optical optometry system belongs to the field of optometry and comprises a spherical lens A, a spherical lens B, a cylindrical lens A and a cylindrical lens B which are sequentially arranged along an optical axis from an object side to an image side, the spherical lens A is movably arranged along the optical axis, the cylindrical lens A and the cylindrical lens B are rotatably arranged by taking the optical axis as an axis, an intersection point of an axial position of the cylindrical lens A and an axial position of the cylindrical lens B is positioned on the optical axis, and the cylindrical lens A and the cylindrical lens B are positioned on the optical axis. The axial position of the cylindrical lens A and the axial position of the cylindrical lens B are both perpendicular to the optical axis, the image-side focal power of the spherical lens A is phi 1, the image-side focal power of the spherical lens B is phi 2, the image-side focal power of the cylindrical lens A is phi 3, the image-side focal power of the cylindrical lens B is phi 4, and phi 1, phi 2, phi 3 and phi 4 meet the following relations that phi 1 is larger than 0 and equal to phi 2 + phi 3, phi 3 is equal to phi 4, and individual independent and rapid optometry can be achieved.
Owner:VISION TEST (WEIFANG) HEALTH TECH CO LTD
Quick connection and positioning construction technology of prefabricated components of fabricated building
The application discloses a quick connection and positioning construction process of prefabricated components of fabricated buildings, which takes a building information model as the only data source and sequentially executes the following steps: digital pre-matching and dynamic instruction generation, component state synchronization and on-site coordinate calibration, dynamic hoisting and multi-stage positioning under real-time guidance, self-adaptive connection and state self-locking, and installation quality online sensing and closed-loop verification. Through multi-stage intelligent positioning of fusion of vision, optics and non-contact force field, the components are precisely positioned at the millimeter level. By using the self-adaptive connection node of the built-in sensing and driving element, the error is automatically compensated and high-strength locking is completed. Based on the real-time acquisition of multi-dimensional physical quantity data, the quality is determined online and a traceable digital file is formed, and all data are gathered into a project digital twin for overall performance simulation and construction dynamic optimization. The application realizes full-process digitalization, and significantly improves the installation precision, operation efficiency and quality controllability of fabricated buildings.
Owner:TIANJIN TIANZHU HAOPENG IND CONSTR CO LTD
Visual Optical Lens Assembly and VR Eyepiece System
The disclosure provides a visual optical lens assembly and a Virtual Reality (VR) eyepiece system. The visual optical lens assembly sequentially includes, along an optical axis from an object side to an image side: a first lens having a refractive power, a reflective polarizing element, a second lens having a negative refractive power, a quarter-wave plate, a third lens having a negative refractive power, and a partially-reflective element. An image-side surface of the first lens is a convex surface; object-side surfaces and image-side surfaces of the second and third lenses respectively are concave surfaces and convex surfaces; the first lens to the third lens are sequentially glued, and the visual optical lens assembly meets a relational expression:1<TTL / (ImgH×tan (Semi-FOV))<2.3; and 0.9<∑CT / TD<1.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD
Machine vision optical systems and their applications camera modules
This utility model provides a machine vision optical system and its camera module, mainly composed of 7 lenses. The first lens has a convex object side and a concave image side, with negative optical power. The second lens has a convex object side and a concave image side, with negative optical power. The third lens has a concave object side and a convex image side, with positive optical power. The fourth lens has convex object and image sides, with positive optical power. The fifth lens has convex object and image sides, with positive optical power. The sixth lens has concave object and image sides, with negative optical power. The seventh lens has a convex object side and a concave image side, with positive optical power. The number of lenses is reasonable, and the structure is simple. By reasonably allocating the optical power of the lenses, the design requirements of ultra-wide-angle and miniaturization of the optical system are effectively met. The high-pixel machine vision recognition optical system configured in this application has the advantages of high pixel count, strong resolution, and ultra-wide-angle design. It has a compact structure, is easy to process and install, and further improves the imaging effect of the equipment paired with the system.
Owner:GUANGDONG HONGJING OPTOELECTRONICS TECHONLOGY CO LTD
Medical insurance reimbursement automatic auditing system and automatic auditing method based on same
The invention discloses an automatic auditing system for medical insurance reimbursement, and the system comprises a multi-mode bill intelligent recognition module which is used for receiving a medical bill image, and outputting a structured claim data object through the fusion of computer vision, optical character recognition and natural language processing technologies; the three-layer AI intelligent risk control module is connected with the identification module and is used for carrying out image authenticity detection, semantic logic consistency verification and user behavior anomaly analysis on the structured claim settlement data in sequence and outputting a comprehensive risk assessment result; a dynamic claim settlement rule engine module which is connected with the risk control module and is used for carrying out automatic claim payment calculation and audit decision making on the claim settlement application passing the risk examination based on a configurable business rule base; and the decision execution and feedback module is connected with the rule engine module, is used for executing an auditing decision, collecting manual auditing data and feeding back the manual auditing data to the identification module and the risk control module, and is used for continuously optimizing the AI model. The medical insurance reimbursement automatic auditing system can realize full-process, intelligent and automatic processing of medical insurance reimbursement auditing.
Owner:ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
Visual optical system
A visual optical system is provided. The visual optical system includes a first optical system and a second optical system. The first optical system includes, sequentially from the first side to the second side along a first optical axis, a reflective polarizing element, a quarter wave plate, and a positive first lens piece. The second optical system includes, sequentially from the first side to the second side along a second optical axis, a positive first lens and a second lens. A radius of curvature R1m of the first-side surface of the first lens piece, a radius of curvature R2m of the second-side surface of the first lens piece, a combined focal length f12e of the first lens and the second lens, and a distance TDe on the second optical axis from a first-side surface of the first lens to a second-side surface of the second lens satisfy: 0.8<(R1m / R2m) / (f12e / TDe)<2.0.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD