32 results about "Visual optics" patented technology

Described herein are digital microfluidic (DMF) devices and corresponding methods for managing reagent solution evaporation during a reaction. Reactions on the DMF devices described here are performed in an air or gas matrix. The DMF devices include a means for performing reactions at different temperatures. To address the issue of evaporation of the reaction droplet especially when the reaction is performed at higher temperatures, a means for introducing a replenishing droplet has been incorporated into the DMF device. A replenishing droplet is introduced every time when it has been determined that the reaction droplet has fallen below a threshold volume. Detection and monitoring of the reaction droplet may be through visual, optical, fluorescence, colorimetric, and / or electrical means.

The invention discloses a cockpit visual work efficiency evaluation method. The method comprises the following steps: establishing a cockpit geometric model according to a real cockpit; establishing a cockpit light environment model according to the cockpit light environment parameters; establishing a cockpit optical material model according to the optical material parameters of the inner and outer surfaces of the cockpit; fusing and establishing a cockpit optical model; a simulation detector is arranged on the cockpit optical model; according to the cockpit optical model and the analog detector, human eye vision optical simulation and dazzle source space tracking and positioning are carried out; according to a glare source space tracking and positioning result, a cockpit structure is optimized; and performing cockpit visual work efficiency evaluation according to a cockpit structure optimization result. According to the cockpit visual work efficiency evaluation method, reasonable evaluation of cockpit visual work efficiency readable visibility in various environments is achieved, simulation is conducted on the cockpit light environment through computer software, and adjustment can be conducted according to the working habit, the vision condition, the age and other factors of each pilot.

A visual optical system comprises a first optical system and a second optical system. The first optical system comprises a first lens having a positive refractive power, a reflective polarizing element, a quarter-wave plate, a second lens having a refractive power and a third lens having a positive refractive power. The second optical system comprises, sequentially along a second optical axis from the first side to the second side, first to sixth lens elements. An effective focal length f3′ of the third lens, a distance TD′ from a first-side surface of the first lens to a second-side surface of the third lens on the first optical axis, an effective focal length f1 of the first lens element and a distance TD from a first-side surface of the first lens element to a second-side surface of the sixth lens element on the second optical axis satisfy: 1.9<(f3′ / TD′) / (|f1| / TD)<5.7.

A visual optical system is provided, including a first optical system and a second optical system, the first optical system sequentially includes: a first element group, a second element group and a third element group, the first element group including a first lens element, a reflective polarizing element and a quarter wave plate; and the second optical system sequentially includes: a first lens, a second lens er, a third lens and a fourth; where, a distance TDm from a first side surface of the first element group to a second side surface of the third element group on the first optical axis and a distance TDe from a first surface of the first lens to a second surface of the fourth lens on the second optical axis satisfy: 5.0<TDm / TDe<15.0.

To provide a suitable tilting array based display.SOLUTION: Various embodiments described herein include an optical system for an augmented reality head mounted display eyepiece lens configured to deliver an image to an eye, where the optical system includes optics. The optics is arranged so as to receive light output from a light source. The optics is further arranged relative to a spatial light modulator array such that light received from the light source passes through the optics and illuminates the spatial light modulator array. Light illuminating the spatial light modulator array is redirected back through the optics and coupled into one of a plurality of waveguides through one of a plurality of in-coupling optical elements. At least a portion of the coupled light is emitted from the waveguide by at least one out-coupling optical element and directed to the eye of a user. A viewing optics assembly comprising the spatial light modulator is configured to rotate the spatial light modulator.SELECTED DRAWING: Figure 26A

The invention provides a machine vision optical system and a camera module applying the same, the machine vision optical system is mainly composed of seven lenses, the object plane side of the first lens is a convex surface, the image plane side of the first lens is a concave surface, the focal power is negative, the object plane side of the second lens is a convex surface, the image plane side of the second lens is a concave surface, and the focal power is negative. The object plane side of the third lens is a concave surface, the image plane side of the third lens is a convex surface, and the focal power is positive; the object plane side and the image plane side of the fourth lens are convex surfaces, and the focal power is positive; the object plane side and the image plane side of the fifth lens are convex surfaces, and the focal power is positive; the object plane side and the image plane side of the sixth lens are concave surfaces, and the focal power is negative; the object plane side of the seventh lens is convex, the image plane side of the seventh lens is concave, the focal power is positive, the number of the lenses is reasonable, the structure is simple, the design requirements for the ultra-wide angle and miniaturization of the optical system are effectively met by reasonably distributing the focal power of the lenses, the high-pixel optical system for machine vision recognition has the design advantages of being high in pixel, high in resolution and ultra-wide angle, and the optical system is suitable for large-scale popularization and application. The structure is compact, processing and installation are convenient, and the imaging effect of equipment matched with the system is further improved.

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.

An aerosol delivery or electronic nicotine delivery systems (“ENDS”) device may include smoking articles that produce aerosol. The device may operate upon authentication. The authentication may first include an age verification before an authentication allows for operation of the device. The authentication may include a control signal communication to the device. The control signal communication may include an audio signal, such as an authentication tone that is detected by a microphone or pressure sensor on the device. The control signal communication may include a visual, optical, or light signal that is detected by a light sensor or photodiode on the device.

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.

The invention provides a machine vision optical system and a machine vision lens using the same, the machine vision optical system is mainly composed of seven lenses, the object plane side of the first lens is a convex surface, the image plane side is a concave surface and has focal power, the object plane side of the second lens is a convex surface, the image plane side is a concave surface and has negative focal power, and the object plane side of the second lens is a convex surface. The object plane side of the third lens is a concave surface, the image plane side of the third lens is a convex surface, and the focal power is negative; the object plane side and the image plane side of the fourth lens are convex surfaces, and the focal power is positive; the object plane side of the fifth lens is a convex surface, the image plane side of the fifth lens is a concave surface, and the focal power is positive; the object plane side of the sixth lens is a convex surface, the image plane side of the sixth lens is a concave surface, and the focal power is negative; the object plane side and the image plane side of the seventh lens are both convex surfaces, the focal power is positive, the number of the lenses is reasonable, through reasonable distribution of the focal power of the lenses, the image quality of the lens is improved, meanwhile, the lens is made to be lighter, the design requirements for high image quality and light weight in the field of industrial automatic online recognition and detection can be effectively met, and the application range is wide. And the device is suitable for being used in environments with ultra-short object distance of 100mm and multiple object distances.

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.

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.

The invention discloses an out-of-focus far-image imaging system based on light field regulation and control, which relates to the field of visual optics and comprises a curved-surface reflector, a curved-surface spectroscope and an out-of-focus module. In the vertical direction, the curved-surface reflector is located above an observed object, and the curved-surface spectroscope is located between the curved-surface reflector and the observed object. In the horizontal direction, the defocus module is located on the outer side of the curved-surface spectroscope, and the curved-surface reflector and the observed object are located on the inner side of the curved-surface spectroscope. According to the invention, the thickness and weight of the optical system are greatly reduced, and a defocus signal with a large defocus amount can be realized under the condition of low complexity.

The invention discloses a moving target real-time omnidirectional three-dimensional identification and distortion correction system based on a deep knowledge prior diffraction neural network. The system relates to the cross technical field of computer vision, optical imaging and artificial intelligence, and comprises a deep knowledge priori generation network module, a diffraction neural network module and a dynamic monitoring module. The deep knowledge prior generation network module generates metasurface phase regulation and control parameters based on the input scattered field and Gaussian noise and inputs the metasurface phase regulation and control parameters into the diffraction neural network module; the diffraction neural network module processes the phase regulation and control parameters, realizes light velocity level signal processing, obtains electric field distribution, and inputs the electric field distribution into the dynamic monitoring module; the dynamic monitoring module analyzes output electric field distribution in real time, and reversely optimizes parameters of the deep knowledge priori generation network module and the diffraction neural network module through a loss function in training.

The invention provides a machine vision optical system and a camera module applying the same, the machine vision optical system is mainly composed of seven lenses, the object plane side of the first lens is a convex surface, the image plane side is a convex surface, the focal power is positive, the object plane side of the second lens is a convex surface, the image plane side is a concave surface, the focal power is negative, the object plane side of the third lens is a concave surface, the image plane side is a convex surface, and the focal power is positive. The object plane side and the image plane side of the fourth lens are both convex surfaces and have positive focal power, the object plane side of the fifth lens is a concave surface and the image plane side of the fifth lens are both convex surfaces and have positive focal power, the object plane side and the image plane side of the sixth lens are both concave surfaces and have negative focal power, and the object plane side and the image plane side of the seventh lens are both convex surfaces and have positive focal power. By reasonably distributing the focal power of the lens, the image quality of the lens is improved, meanwhile, the lens is lighter, and the design requirements for high image quality and light weight in the field of industrial automatic online recognition and detection can be effectively met.

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.

The present application belongs to the technical field of visual optics, and particularly relates to a holographic defocus glasses device, which comprises a frame, a lens, a signal source and a plurality of holographic lenses; the signal source is arranged on the frame and used for emitting light containing correction pattern information to the lens; a holographic film layer is arranged on the lens, and a plurality of holographic lenses are formed in the holographic film layer; the plurality of holographic lenses are discretely distributed on the periphery of a central visual field area of the lens and used for reflecting the light containing the correction pattern information so as to form convergent light, thereby forming a plurality of discrete correction pattern virtual images in front of the retina of a user and forming defocus stimulation. In the holographic defocus glasses device, the holographic film layer does not affect the imaging of light in a normal transmission direction, so that the user's retina can normally receive ambient light while converging into a plurality of discrete correction pattern virtual images in front of the retina to form defocus stimulation, thereby inhibiting the growth of the eye axis and realizing myopia control.

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.

The utility model belongs to the field of robot vision optical systems, and discloses an athermalization robot vision optical system with a preposed diaphragm. The lens comprises a diaphragm, a first lens made of a glass material, a second lens made of a plastic material, a third lens made of a plastic material, a fourth lens made of a plastic material, a fifth lens made of a plastic material and a glass optical filter in sequence from an object side to an image side, the first lens is a positive biconvex lens; the second lens is a negative lens, the object side surface is a convex surface and is an aspheric surface, and the image side surface is a concave surface and is an aspheric surface; the third lens is a positive lens, the object side surface is a convex surface and is an aspheric surface, and the image side surface is a convex surface and is an aspheric surface; the fourth lens is a negative lens, the object side surface is a concave surface and is an aspheric surface, and the image side surface is a convex surface and is an aspheric surface; the fifth lens is a positive lens, the side surface of the fifth lens is a convex and aspheric surface, and the image side surface of the fifth lens is a concave and aspheric surface. According to the utility model, clear imaging can be maintained in a temperature range of 0 DEG C to + 40 DEG C, and stable image quality can be ensured.

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.

Optical Vision System The present invention relates to an optical vision system (10) comprising: at least one image projection channel (12), the projection channel(s) (12) comprising an eyepiece (20) defining an exit pupil for the projection channel (12), a device (14) for adjusting the position of the eyepiece(s) (20) relative to the eyes of a user, the adjustment device (14) comprising a unit (22) for generating indicator lights in the projection channel(s) (12) such that the indicator lights are positioned at the edge of the useful image field, and a mechanism (16) for adjusting the position of the eyepiece(s) (20) relative to the eyes of the user based on the indicator lights. Figure for the abstract: 2

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.

The utility model belongs to the technical field of detection equipment, and particularly relates to polyhedral visual optical detection equipment which comprises an equipment front section and an equipment rear section, the equipment front section comprises a front section cabinet, a front section belt line, a plurality of first camera light source components, a second camera light source component and a third camera light source component; one section of the front section belt line is positioned on the upper surface of the front section cabinet; the first camera light source components are arranged on the upper surface of the front section cabinet and are positioned on one side of the front section belt line; the equipment rear section comprises a rear section cabinet, a rear section belt line located on the upper surface of the rear section cabinet, a plurality of mechanical arm assemblies, a plurality of fourth camera light source assemblies, a plurality of fifth camera light source assemblies and a grabbing assembly arranged on the rear section belt line, wherein the mechanical arm assemblies, the fourth camera light source assemblies and the fifth camera light source assemblies are arranged on the upper surface of the rear section cabinet. According to the utility model, the strip-shaped light source and the annular light source are combined to detect a polyhedral product; compared with the prior art of the same kind, the detection tool is convenient for detecting a plurality of surfaces and a plurality of angles of a polyhedral product, and is wide in application range.

The invention discloses a camera lens pollution degree evaluation method and device based on multi-dimensional feature fusion and dynamic weight, and belongs to the cross technical field of computer vision, optical detection and industrial image analysis. The evaluation method comprises the following steps: respectively acquiring a clean image when a lens is not polluted and a polluted image after the lens is polluted; the collected images are preprocessed; performing multi-dimensional index calculation on the pre-processed image; according to the pixel brightness distribution histogram characteristics of the image, dynamic weight distribution is carried out on the multiple indexes in a self-adaptive mode; and performing weighted summation on the standard calculation values of the plurality of indexes in combination with the dynamic weight to obtain the CPI of the polluted image. And according to the range division of the CPI, obtaining the pollution level of the pollution image. According to the method, by fusing the multi-dimensional indexes, introducing the physical model and adopting a dynamic weight distribution mode, the accuracy and the sensitivity of lens pollution degree evaluation can be effectively improved, and the overall operation is relatively simple.

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.

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.

A head-mounted augmented reality stereo vision optical film on glasses, including a light-transmitting display layer, an optical projection layer, and an eyeball tracking layer, is provided. The light-transmitting display layer includes multiple pixel units. The optical projection layer includes multiple lens units. One of the lens units is configured to correspond to at least one of the pixel units. The eyeball tracking layer includes multiple micro-sensing elements.

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.

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.