293 results about "Liquid lens" patented technology

A dynamic vision system includes a variable focus liquid lens optical assembly. The dynamic vision system includes a variable lighting assembly. The dynamic vision system includes a control system configured to adjust one or more optical parameters and data collected from the variable focus liquid lens optical assembly in real time. The dynamic vision system includes a control system configured to adjust the variable lighting assembly. The dynamic vision system includes a processing system that dynamically learns on a training set of outcomes, parameters, and data collected from the variable focus liquid lens optical assembly to train a set of machine learning models to control the variable focus liquid lens optical assembly to optimize collection of data for processing by the set of machine learning models.

A head-mounted device may have lenses. A user may view images through the lenses from eye boxes. The lenses may be tunable liquid lenses. Each lens may have a lens chamber. The lens chamber of the lens may have rigid and / or flexible walls that form optical lens surfaces. Actuators and / or pump and reservoir systems may deform the lens surfaces in response to control signals from a control circuit to tune the lens. Each liquid lens may have oil or other liquid in the lens chamber for that lens. Inorganic dielectric particles or other refractive-index-adjustment particles may be used to adjust the refractive index of the lens. The particles may be subwavelength in size.

This invention provides a liquid lens and a rapid focusing method using the liquid lens, belonging to the field of focusing device technology. The liquid lens includes: a feature determination module for real-time acquisition of the current visibility features of all monitored objects within the current field of view of the liquid lens; a focus determination module for determining the current target focus position of the liquid lens based on the current visibility features and focusing habit data of all monitored objects within the current field of view of the liquid lens; a curvature calculation module for calculating the target curvature of the liquid lens based on the current target focus position; and a curvature control module for setting the output current of the curvature control device of the liquid lens based on the target curvature of the liquid lens to obtain a rapid focusing result of the liquid lens. This allows for the reasonable determination of the focus position based on the user's focusing habits when multiple monitored objects exist within the field of view of the liquid lens, and enables rapid focusing control of the liquid lens.

The invention provides a multi-target adaptive optical tracking method and system for an unmanned intelligent turntable. The method comprises the following steps: acquiring a video stream and turntable attitude data on an unmanned intelligent turntable; carrying out scene understanding operation on the video stream, fusing the dynamic attention area and extracting spatial distribution information of a plurality of moving targets in a rotary table coordinate system; calculating an optical deformation parameter of the liquid lens, and driving the liquid lens to execute non-uniform optical curved surface adjustment, so that a focus area simultaneously covers a plurality of spatially dispersed moving targets; receiving distance data fed back by the distance measuring equipment, carrying out cross validation on the distance data and actual optical parameters of the adjusted liquid lens, and generating a cooperative calibration instruction when the deviation exceeds the tolerance; and synchronously updating the dynamic region of interest identification logic of scene understanding and an optical deformation parameter calculation strategy according to the instruction. According to the invention, the stability and spatial positioning precision of multi-moving-target tracking in a wide-area complex scene are improved.

The invention belongs to the technical field of laser beam expanders, and discloses a self-adaptive zoom laser beam expander based on a liquid lens and a working method of the self-adaptive zoom laser beam expander. The self-adaptive zoom laser beam expanding lens comprises a laser beam expanding lens barrel, an objective lens group, a zoom group, a collimating lens group and a driving module, the objective lens group is used for expanding the incident laser beam and forming a divergent laser beam; the zoom group comprises a plurality of liquid lenses and is used for modulating the divergence angle and the beam direction of the divergent laser beam formed by the objective lens group and forming a modulated laser beam; the collimating lens group is used for collimating the modulated laser beam formed by the zoom group and forming a collimated laser beam; the driving module is used for dynamically changing the focal length of the liquid lens in the zoom group according to requirements. The technical scheme of the invention has the advantages of compact structure, high response speed, no mechanical loss and lower cost, and can realize continuous change of beam expanding multiplying power.

The invention discloses a near-infrared confocal microscopic imaging system and a near-infrared confocal microscopic imaging method, and relates to the technical field of optical microscopic imaging. The method comprises the following steps that near-infrared exciting light sequentially passes through a beam expanding system, a liquid lens and a confocal scanning light path to irradiate a to-be-detected sample so as to generate a near-infrared fluorescence signal, and the liquid lens is used for adaptively adjusting the focal length and wavefront morphology according to the depth of the to-be-detected sample; a photomultiplier detects the near-infrared fluorescence signal after non-focus scattered light is filtered out through the confocal scanning light path and the pinhole, and a fluorescence signal image is obtained; and according to the fluorescence signal image, carrying out iterative optimization on the focal length and phase modulation parameters of the liquid lens to maximize the image sharpness or the signal-to-noise ratio and realize the three-dimensional microscopic imaging of the deep tissue. According to the near-infrared confocal microscopic imaging method provided by the invention, deep near-infrared microscopic imaging with low phototoxicity, low cost and high resolution can be realized.

The invention discloses a self-adaptive visual tactile sensor and an adjusting method, the self-adaptive visual tactile sensor comprises a base and a shell, a control panel, a camera and at least one light source assembly are fixedly arranged on the base, a contact assembly is fixedly arranged at the upper end of the shell, and the self-adaptive visual tactile sensor is characterized in that a light source rotation driving mechanism is arranged on the base, and a liquid lens is fixedly arranged on the base; the liquid lens is located between the camera and the contact assembly, the center of the liquid lens and the optical axis of the camera are located on the same straight line, and the local focal length of the liquid lens and the included angle between the light source assembly and the horizontal plane can be automatically adjusted through electric signals sent by the contact assembly. The system has the advantages that imaging of the camera is clear, and the imaging quality is ensured; moreover, the camera achieves secondary focusing through the liquid lens, so that the camera does not need to adjust the position of the lens for imaging of different object distances, the focusing distance between the contact assembly and the camera is greatly shortened, and the overall size of the visual tactile sensor is reduced.

The invention relates to a membrane based fluidic lens (1,1') with a non-circular membrane (3,3') and a non-circular aperture, a partially flexible lens shaper (2, 2') for adjusting a focal length of the lens (1,1'), an actuation assembly to adjust the focal length and a means to inherently adjust for acceleration-induced aberrations.

Disclosed in the present application are a tab detection system and method. The tab detection system comprises: an upper computer, which is electrically connected to a camera provided with a liquid lens, wherein the upper computer is used for outputting multiple voltage signals to the liquid lens and sending an image collection signal to the camera when a battery cell assembly reaches a tab detection station, and the liquid lens is used for adjusting the focal length of the liquid lens on the basis of each voltage signal; and the camera, which is used for collecting, on the basis of the image collection signal and by means of the liquid lens, a first image of a tab of the battery cell assembly after the focal length of the liquid lens is adjusted each time, so as to obtain multiple first images, and sending the multiple first images to the upper computer, wherein the upper computer is further used for fusing the multiple first images into a second image, and performing appearance defect detection on the tab on the basis of the second image to obtain a detection result. Thus, the appearance defect detection of the tab can be realized.

The invention discloses an optical adjustment method, head-mounted display equipment and a storage medium, and relates to the technical field of head-mounted display equipment, the optical adjustment method is applied to the head-mounted display equipment, and the head-mounted display equipment comprises a biological feature acquisition module and a liquid lens array; the method comprises the following steps: acquiring target biological characteristic data of a wearer through a biological characteristic acquisition module; the target biological characteristic data are input into a preset optical parameter prediction neural network model, target optical parameters are obtained through prediction, and the optical parameter prediction neural network model is obtained by taking the biological characteristic data as a sample and taking the optical parameters as label training; and adjusting the control voltage of the liquid lens array based on the target optical parameter so as to adjust the target curvature of the lens in the liquid lens array. The head-mounted display device can adapt to biological characteristic data of different users, the focal length of the head-mounted display device is automatically adjusted, and the VAC effect of the head-mounted display device is reduced.

The invention belongs to the field of NED equipment detection, and particularly discloses an NED equipment detection method and device, and the method comprises the steps: obtaining display pictures of NED equipment in different view fields through an NED detection device, thereby obtaining a modulation transfer function MTF1 in the meridian direction of each view field of the display pictures and a modulation transfer function MTF2 in the sagittal direction of each view field of the display pictures, the NED device comprises a near and far vision correction layer and / or an astigmatism correction layer; at least one of the spherical diopter, the cylindrical diopter and the azimuth angle of the optical axis of the liquid lens is adjusted until the MTF1 and the MTF2 are both not smaller than a preset MTF threshold value, and the NED detection device comprises the liquid lens; determining parameters of a correction layer of the NED based on the adjusted parameters of the liquid lens; and / or obtaining a picture displayed by the NED equipment by using the adjusted NED detection device, and carrying out picture quality detection. According to the invention, the NED equipment can be detected more efficiently and accurately, the production efficiency and the product quality are improved, and the detection cost is reduced at the same time.

The application provides a liquid lens focus stack imaging method, system and electronic equipment, and belongs to the technical field of optical imaging detection. The method comprises the following steps: a power supply module is controlled to provide a driving voltage for a liquid lens to form an image on a CMOS array; an image collected by the CMOS array is acquired, all images are aligned based on the image when the driving voltage is lowest, and an image sequence of a constant magnification focus stack is obtained; a focus state of the image sequence is evaluated, the image sequence is fused based on the focus state evaluation result, and a full-focus image is obtained; the object distance of the collected image is determined, a depth map is generated based on the object distance and the full-focus image, and a target image is generated based on the full-focus image and the depth map. The application aligns all collected images based on the image when the driving voltage is lowest, and solves the technical problem of low imaging accuracy existing in the existing focus stack imaging technology.

The utility model relates to a liquid lens zoom foggy vision system, training instrument and optometry unit, foggy vision system is equipped with eyepiece lens cone, front lens cone, rear lens cone and objective lens cone in proper order along the optical path, the front lens cone is equipped with first lens and second lens in proper order, the rear lens cone is equipped with liquid lens and third lens in proper order, and the objective lens cone is equipped with second lens and third lens in proper order. The front lens barrel and the rear lens barrel form a variable-focus liquid lens telescopic system; a foggy view image display panel is arranged in the objective lens barrel and used for playing foggy view animations. The system further comprises a controller, and the liquid lens, the objective lens cone and the fog view image display panel are electrically connected with the controller. According to the fogging system, the zoom lens can be controlled to zoom through a circuit, video animation is played in combination with the fogging image display panel, switching of different images is achieved, the zoom response is fast, a complex structure and switching images are not needed, the structure is simple and small, the attention of trainees is better attracted, and the fogging effect is improved.

The application discloses a digital slice scanning fast focusing system adopting a liquid lens, wherein a liquid lens, a left focusing camera and a right focusing camera are installed in the optical path of a digital slice scanner; the liquid lens is installed between an objective lens and an image-taking camera; the left focusing camera and the right focusing camera are respectively installed on the left side and the right side of the image-taking camera to collect focal plane images; a computer processing device is connected with the left focusing camera and the right focusing camera respectively to obtain a focal plane signal according to the focal plane images collected by the left focusing camera or the right focusing camera; the computer processing device is connected with a constant current source driver to send the focal plane signal; and the constant current source driver is connected with the liquid lens to send different driving currents to control the liquid lens to focus. The application adds two focusing cameras (the left focusing camera and the right focusing camera) to expand the focusing FOV to quickly obtain the focal plane signal, and then controls the liquid lens to quickly adjust to the focal plane.

An embodiment comprises: a substrate; a sensor base disposed on the substrate; a lens holder disposed on the sensor base; a lens barrel coupled to the lens holder; and a first lens part disposed inside the lens barrel, wherein: the first lens part comprises a holder, a liquid lens disposed inside the holder and including an upper electrode and a lower electrode, and a terminal disposed in the holder and electrically connected to the upper and lower electrodes; the upper electrode comprises a first upper electrode, a second upper electrode, a third upper electrode, and a fourth upper electrode, which are spaced apart from each other; the lower electrode comprises a first lower electrode, a second lower electrode, a third lower electrode, and a fourth lower electrode, which are spaced apart from each other; and the first lower electrode is a first common electrode for the upper electrode, and the second lower electrode is a second common electrode for the third lower electrode and the fourth lower electrode.

Adaptive fashion glasses with universal vision correction, characterized by: - a liquid lens (1) with an adjustable diopter range from -6 to +4 - a rotatable astigmatism correction ring (4) with an adjustment range from 0° to 180° - a fashion eyeglass frame (2) made of acetate - an adjustment mechanism (3) for manual diopter adjustment - a touch sensor (5) in the bridge area - Multi-user capability through individual adjustability

The present disclosure relates to a liquid lens, an optical curve adjusting method thereof, a camera module and a terminal device. The liquid lens comprises a light-transmissive groove-shaped component, a liquid medium contained in the groove-shaped component, and an elastically deformable film encapsulating the groove-shaped component. The encapsulating part of the film corresponding to the groove of the groove-shaped component is a light-transmissive structure with unequal thickness. In use, the thickness of the local position of the deformable film is adjusted according to the required target optical curve, so as to be configured into a qualified structure with unequal thickness. Under the driving of external force, the film can be deformed to press the liquid medium, so as to obtain the same optical curve as the required target optical curve, thereby meeting the optical requirement.

The application discloses an optical adjustment method and device, a head-mounted device and a storage medium, and relates to the technical field of head-mounted devices. The optical adjustment method is applied to a head-mounted device, the head-mounted device comprises a liquid lens array and a scoring module, and the method comprises the following steps: after the curvature of the liquid lens array is adjusted based on target optical parameters of the head-mounted device, determining a target comfort score of a wearer by using the scoring module, wherein the target optical parameters are obtained by predicting a light parameter prediction model based on target biological feature data of the wearer, and the light parameter prediction model is obtained by training biological feature data as a sample and optical parameters as a label; and based on the target comfort score, the curvature of the liquid lens array is calibrated. The application can reduce the VAC effect of the head-mounted device.

The present invention provides a high-speed visual scanning system and method based on a liquid lens, belonging to the field of visual scanning technology. The system includes: a relationship determination module, which is used to obtain multiple images of a scene to be scanned at the same time based on a liquid lens, and determine the mapping relationship between the actual shooting range and depth data of each image; a scene fusion module, which is used to perform scene fusion on all images based on the mapping relationship of each image, and obtain a fused image and a scene fusion strategy; a sequence generation module, which is used to generate a high-frame image sequence of the scene to be scanned based on the fused image and the scene fusion strategy; and a visual scanning module, which is used to determine the high-speed visual scanning results of the scene to be scanned in the high-frame image sequence based on deep learning; and is used to achieve high-speed and accurate scanning of objects contained in the scene to be scanned.

The system comprises a light splitting module, an imaging module and an automatic focusing module, the light splitting module is used for splitting light reflected by a sample into a main light path and a light splitting path, the imaging module is used for obtaining a full depth-of-field image corresponding to the main light path, and the automatic focusing module is used for focusing the full depth-of-field image. The automatic focusing module comprises a liquid lens and an automatic focusing sensor, the liquid lens is located between the imaging module and the light splitting module and is coaxial with the imaging module and the light splitting module, and the automatic focusing sensor is used for obtaining light on a light splitting path and calculating the defocusing amount of the sample; and the control module is used for storing a calibration mapping relation between the driving parameters of the liquid lens and the defocusing amount of the automatic focusing sensor, and is also used for calling the mapping relation table to adjust the driving parameters of the liquid lens according to the defocusing amount. Dynamic electric signals can be generated according to feedback data of the automatic focusing sensor, the liquid lens is driven to achieve millisecond-level focal length switching, high-speed focusing is achieved, and a clear panoramic depth image of a sample is shot.

The present invention discloses a focusing mechanism, a photographing module and an electronic device for a liquid lens. The focusing and anti-shake mechanism of the liquid lens includes: a liquid lens; an SMA actuator, the SMA actuator includes two first contact plates, an SMA wire and a driven member, the first contact plate is a conductor, both ends of the SMA wire are electrically connected to the two first contact plates respectively, the driven member contacts one side of the SMA wire and bends the SMA wire into a V shape, the SMA wire can slide on the surface of the driven member while maintaining contact with the driven member, when the SMA wire contracts, the included angle of the bent SMA wire increases and drives the driven member to move; a focusing ring, connecting the driven member, the SMA wire can drive the driven member and the focusing ring to move through contraction, and the movement of the focusing ring can contact and squeeze the liquid lens. The present invention can make the structure of the focusing and anti-shake mechanism of the liquid lens simple, compact and easy to manufacture, and is beneficial to reducing the risk of abnormal deflection of the driven member and the focusing ring, and is beneficial to improving the imaging quality.

The invention discloses a liquid lens wavefront detection device and method based on a background schlieren method. The detection device comprises a first reference wavefront beam generation assembly, a double-side telecentric lens and a camera, and a reference wavefront beam emitted from the first reference wavefront beam generation assembly enters a liquid lens to be detected, enters the double-side telecentric lens after being transmitted by the liquid lens to be detected, and is collected by the camera after being transmitted by the double-side telecentric lens. The detection device is used for collecting a reference image and a dynamic image of the to-be-detected liquid lens, so that background displacement is obtained, wavefront slope distribution is further obtained, and finally wavefront distribution and wave aberration of the to-be-detected liquid lens are obtained after integral reconstruction is conducted on the wavefront slope distribution. The telecentric background schlieren method is adopted for liquid lens wave aberration detection, and the problems that in a traditional Shack-Hartmann wavefront detection technology, a microlens array needs to be used for dividing wavefront to be detected into a plurality of wavelets, and the spatial resolution is limited by the microlens size and the duty ratio are solved.

The application provides a liquid lens with a buffer structure and a preparation method and application thereof, the liquid lens comprises an upper electrode, an assembly hole is arranged in the upper electrode, a first light-transmitting plate and a buffer structure are arranged in the assembly hole; a lower electrode, a through hole is arranged in the lower electrode, a second light-transmitting plate is arranged in the through hole; a sealing ring is arranged between the upper electrode and the lower electrode and is used for sealing liquid; by arranging the buffer structure in the assembly hole of the upper electrode, the buffer structure can play a buffering role when the liquid is expanded due to temperature influence, the structural stability and service life of the lens are greatly enhanced, meanwhile, the preparation process and structure of the liquid lens are very simple, the production cost of the liquid lens can be effectively reduced, the manufacturing precision is increased, consistency is improved, and the liquid lens is more suitable for industrialized batch production.

The invention relates to the technical field of online monitoring of power equipment, in particular to a double-spectrum state monitoring method and device for a control cubicle, and the method comprises the steps: synchronously collecting a visible light image and an infrared thermogram in the control cubicle through beam splitter prisms with the same optical axis, and carrying out the target detection of the visible light image at an edge calculation end, so as to automatically recognize and position the ROI of a circuit breaker and a wiring terminal; the maximum temperature in each ROI is calculated based on the infrared thermogram, correction temperature T is obtained through correction by combining the ambient temperature and the ROI temperature historical average value, and when the correction temperature T exceeds a preset threshold value or the temperature rise rate exceeds a set limit value, graded early warning is triggered, and a visible light image superposed with a temperature identifier is transmitted. And periodic automatic focusing operation can be executed through the liquid lens to maintain the image definition within the depth of field of 50-500mm. According to the invention, continuous and accurate monitoring of the control cubicle can be realized, the timeliness of fault discovery is improved, and the labor cost is reduced.

The invention relates to an artificial eye optical system. The artificial eye optical system comprises an optical acquisition assembly and a signal sensing assembly, the optical acquisition assembly comprises a corneal lens group, an aperture diaphragm and a conventional lens group which are sequentially arranged from an object side to an image side; external light is transmitted to the signal sensing assembly through the optical acquisition assembly; the corneal lens group has negative focal power; the conventional lens group comprises a first lens group, a second lens group, a third lens group, a focusing lens group and a spectroscope group; the first lens group, the second lens group and the third lens group all have positive focal power; the focusing lens group comprises a liquid lens and is used for adjusting focal power; the spectroscope group comprises a beam splitter prism and is used for carrying out beam splitting treatment on incident light; the signal sensing assembly is arranged on a light path formed by the optical acquisition assembly and is used for receiving light transmitted by the optical acquisition assembly; on the basis, not only can the physiological structure of human eyes be simulated, but also the human eyes can be simulated to comprehensively perceive various information in a visual field range, and comprehensive measurement of the display quality of the XR equipment is realized.

The utility model relates to medical instrument technical field especially, more particularly to a kind of camera and endoscope system with liquid lens, the camera includes: in incident optical axis direction, first optical lens group, liquid lens, second optical lens group and image sensor are sequentially and interval arranged;Drive circuit, drive circuit is connected in liquid lens, drive circuit is used to output zoom signal to liquid lens;Liquid lens is used to carry out curvature adjustment when receiving zoom signal.Compared with the zoom of the prior art using mechanical mechanism, the utility model can not need to set mechanical mechanism, and then simplify structure, so that user is more portable when holding, improves user experience.

The invention discloses a tab detection system and method, and the system comprises an upper computer which is electrically connected with a camera provided with a liquid lens, and is used for outputting a plurality of voltage signals to the liquid lens and transmitting an image collection signal to the camera under the condition that a cell assembly reaches a tab detection station; the liquid lens is used for adjusting the focal length based on each voltage signal; the camera is used for acquiring a first image of a tab of the battery cell assembly through the liquid lens to obtain a plurality of first images based on the image acquisition signal after the focal length of the liquid lens is adjusted each time, and sending the plurality of first images to the upper computer; and the upper computer is also used for fusing the plurality of first images into a second image, and performing appearance defect detection on the tab based on the second image to obtain a detection result. Therefore, the appearance defects of the tabs can be detected.

The application relates to the technical field of adaptive optics and intelligent material application, and discloses a liquid lens continuous zooming method and system based on programmable control, which comprises the following steps: temperature adjustment is performed on a phase change container to switch the phase change container from a glass state to a high-elasticity state; the volume of an optical medium is adjusted to drive the phase change container in the high-elasticity state to deform until the phase change container reaches a target optical appearance; temperature adjustment is performed on the phase change container to switch the phase change container from the high-elasticity state back to the glass state to lock the target optical appearance, and passive self-locking of the focal length is realized. Through the combination of the glass transition characteristics of the shape memory polymer and the precise regulation and control of the volume of the optical medium, the continuous zooming and passive self-locking of the liquid lens are realized, the problem that the traditional liquid lens needs to continuously consume electric energy to maintain the focal length is effectively solved, and the optical appearance precision and long-term stability of the lens in a complex environment are ensured.

The embodiment of the invention discloses a liquid lens, a lens system and a display device. In the liquid lens, a second substrate is provided with an opening; the elastic film covers the opening and is connected to the second substrate. The first substrate, the side wall, the second substrate and the elastic film define a containing cavity. The light-transmitting liquid is arranged in the accommodating cavity; the extrusion piece is located on the peripheral side of the open hole. The liquid lens has a plane lens state and a convex lens state, and when the liquid lens is in the plane lens state, the elastic film is in a plane shape; when the liquid lens is in a convex lens state, the extruding piece extrudes the light-transmitting liquid, the light-transmitting liquid extrudes the elastic film, and the elastic film protrudes out of the second substrate and is in a convex curved surface shape. According to the liquid lens, the extruding part is adopted to extrude the light-transmitting liquid, so that the light-transmitting liquid extrudes the elastic film to protrude, and at the moment, the light-transmitting liquid is in a convex lens shape. The protruding amount of the elastic film can be adjusted according to the extrusion degree of the extrusion piece on the light-transmitting liquid, and therefore zooming of the lens is achieved.

The present invention belongs to the technical field of industrial surface imaging, and provides an electrically tunable focus OCT scanning probe, which includes an outer shell large sleeve, a lens group sleeve and a lens group. The outer shell large sleeve is the outermost straight tube sleeve, and there is a small hole at the outer circle of the right end. The lens group sleeve is placed inside the outer shell large sleeve, and its length is less than that of the outer shell large sleeve. A lens group is placed inside it. The lens group includes, in the order of the optical fiber from the light incident to the sample to be measured: an optical fiber adapter flange, a collimating lens, a focusing lens, an electrically tunable focus liquid lens and a reflecting prism. The lenses are fastened by means of a threaded pressing piece. The present invention can improve the measurement ability of the probe for samples to be measured with different diameters. By directly changing the measurement focal length, the process of replacing the probe is avoided, and the measurement efficiency is improved.