36 results about "Liquid lens" patented technology

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 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.

This utility model relates to the field of liquid lens technology, specifically an adjustable focusing lens based on a liquid lens, including a lens mount and a liquid lens module. One end of the lens mount has a docking groove, and the liquid lens module rests against the docking groove. One end of the lens mount has a positioning groove, and the liquid lens module has a positioning box that rests against the positioning groove. The positioning box has an electrode connector, and the positioning groove has an interface. An annular inclined groove is formed on the outer ring of the liquid lens module. The lens mount has a fastening box, and a threaded hole is formed between the top of the fastening box and the docking groove. A fastening groove is formed between the inside of the fastening box and the threaded hole. The threaded post and conical head allow the operator to complete the stable installation or quick disassembly of the liquid lens module simply by rotating the threaded post, without the need for additional tools, greatly improving maintenance convenience.

This invention discloses an autofocus optical imaging system based on a liquid lens, comprising a first lens group, an aperture, a second lens group, a cover glass, and a CMOS photosensitive surface arranged sequentially from left to right along the incident light direction. The first lens group includes lenses one, two, and three; lenses one and two have positive refractive power, are convex on the object side, and concave on the image side; lens three has negative refractive power, is concave on the object side, and concave on the image side. The second lens group includes lenses four, five, six, liquid, seven, and eight; lens four has positive refractive power, is convex on the object side, and convex on the image side; lens five has negative refractive power, is concave on the object side, and convex on the image side; lens six has positive refractive power, is convex on the object side, and convex on the image side; lens seven has positive refractive power, is convex on the object side, and convex on the image side; and lens eight has negative refractive power, is concave on the object side, and convex on the image side. The liquid lens includes a first transparent surface layer, a first liquid region, an elastic film layer, a second liquid region, and a second transparent surface layer. It has a wide operating band, a large field of view, a large target surface, and a small F-number. It can quickly autofocus, is noiseless, has a compact structure, and has stable imaging quality.

This invention provides a scanning probe microscope, including a laser, a probe, a position-sensitive detector, a camera, and a liquid lens. The liquid lens is disposed in the optical path between the camera and the probe. When the liquid lens is in a first state, the camera images the probe arm at least through the liquid lens; when the liquid lens is in a second state, the camera images the object under test at least through the liquid lens. This invention integrates the observation optical paths of the probe and the object under test into a single optical element, greatly reducing the size of the device. It enables switching between imaging of the probe arm and the surface under test without moving the optical element, reducing interference with the imaging effect caused by the movement of the optical element. It can quickly switch the imaging object, improving efficiency. The focal length of the liquid lens can be continuously varied, facilitating matching different surfaces under test and probe arm positions, thereby increasing the applicability of the scanning probe microscope.

This invention relates to the field of optical imaging technology, and more particularly to an adjustable-focus barcode scanning lens, comprising a liquid lens, an aperture stop, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged sequentially along the optical axis from the object side to the image side. A liquid lens is an optical element that dynamically adjusts the focal length by changing the shape of its internal liquid. The adjustable-focus barcode scanning lens combines the liquid lens with six different optical lenses, enabling dynamic adjustment of the focal length for barcode images at different distances and effectively correcting various aberrations, avoiding blurring or distortion caused by focal length changes. Combined with the aperture stop's limitation of light transmission, the optical path structure is further optimized, improving image contrast and clarity. Ultimately, this ensures that the adjustable-focus barcode scanning lens can obtain clear barcode images regardless of whether scanning is at a long or short distance, significantly improving the lens's adaptability and flexibility, and reducing the complexity and cost of use.

The present disclosure relates to a liquid lens zoom device, a control method, a liquid lens and an electronic device, comprising: a first container for containing liquid, the volume of the liquid in the first container corresponding to the focal length of the liquid lens; at least one second container, the first container and each second container being in communication, and the focal length of the liquid lens changing correspondingly when the liquid in the second container flows into or out of the first container. The liquid in the second container can flow into or out of the first container, which causes the focal length of the liquid lens to change correspondingly, and the liquid in the first container does not shake, thereby improving the imaging quality and the imaging speed, and there is no electromagnetic structure to cause magnetic interference.

The invention relates to a telecentric lens (100; 100a; 100b; 100c) comprising a lens body (20) extending along an optical axis (X). The lens body (20) is provided with a front optical group (2), a rear optical group (5), a stop (4), a sensor plane (6) and a liquid lens (3). The front optical group (2) is configured to receive incoming light rays (R i ) originating from an object (1). The rear optical group (5) is configured to receive light rays (R j ) from the front optical group (2). The stop (4) is arranged between the front optical group (2) and the rear optical group (5). The sensor plane (6) is configured to collect outgoing light rays (R z ) projected by the rear optical group (5). The stop (4) is substantially arranged at a focal point of the front optical group (2). Furthermore, the liquid lens (3) is arranged between the front optical group (2) and the rear optical group (5). The curvature of the liquid lens (3) can be adjusted to translate a focal plane of the object (1) along the optical axis (X).

The application relates to a high-efficiency focusing lens and an endoscope, which sequentially comprise a first lens group, a second lens group, a third lens group, a fourth lens group and a liquid lens from an object side to an image side, wherein the second lens group and the third lens group are movably arranged in the direction of an optical axis, so that the high-efficiency focusing lens has a wide-angle state and a long-focus state; the focal length of the first lens group is f1, the focal length of the fourth lens group is f4, the total optical length of the high-efficiency focusing lens is TTL, and when the high-efficiency focusing lens is in the wide-angle state, the focal length of the high-efficiency focusing lens is f w , which satisfies

The application discloses a line confocal OCT corneal imaging device and method integrated with a liquid lens automatic focusing, a light source module outputs light, the light passes through a line illumination generation module along an optical axis, enters a first beam splitter to form two light beams, and the two light beams enter a sample arm module to be incident to a cornea to form a reflection and scattering light beam carrying corneal information; and enter a reference arm module, pass through a second reflector to form a reference light beam; the reflection and scattering light beam and the reference light beam return to the first beam splitter along the optical axis to interfere to generate a corneal low-coherence interference signal, and sequentially enter an imaging expansion module and a spectrometer module along the optical axis to image; a computer centrally controls a first detector in the spectrometer module, an electrically-controlled displacement table in the reference arm module and a second detector in a liquid lens module; the liquid lens module is optically coupled to the sample arm module through a dichroic mirror to realize real-time measurement of an axial eye movement. The application provides a safer and more reliable inspection tool for early diagnosis and precise evaluation of corneal diseases.

The application discloses a liquid lens device and a control method, a controller and an optical system thereof, and belongs to the technical field of optics. The liquid lens device comprises a shell, a connecting pipe, a controller and an adjusting structure. The connecting pipe is communicated with a first chamber and a second chamber of the shell. The first chamber, the second chamber and the connecting pipe all contain liquid. The controller is used for controlling the adjusting structure to adjust the liquid in the connecting pipe, so as to adjust the volume of the liquid in at least one of the first chamber and the second chamber. The adjusting structure is communicated with the connecting pipe and can absorb the liquid in the connecting pipe and input the liquid into the connecting pipe under the control of the controller. Alternatively, the adjusting structure comprises at least one barrier. The barrier blocks the liquid in the connecting pipe on both sides of the barrier and can move along the extension direction of the connecting pipe under the control of the controller. The application can solve the problems of complex structure and large volume of the optical system, and is used for the optical system.

This invention provides a method for constructing a high-precision three-dimensional model of a microscopic sample, comprising the following steps: S1 Obtaining an image sequence to be processed: acquiring a set of image sequences of the microscopic sample at different focal lengths using a microscopic imaging system; S2 Magnification correction processing: processing each image in the image sequence using a magnification correction algorithm based on a high-precision calibration plate to ensure accurate pixel correspondence and constant magnification for each image; S3 Constructing a three-dimensional model: constructing a three-dimensional model of the microscopic sample using a focused three-dimensional reconstruction method for the magnified and corrected image sequence. This invention, by employing liquid lens technology, enables focusing or zooming functions, thereby avoiding the use of complex mechanical zoom systems or inefficient Z-axis movement focusing systems, reducing hardware complexity and cost in industrial production. It also improves the stability of the imaging system, effectively reduces noise interference, and enhances the stability of the reconstruction results.

The application relates to a resin material, a liquid lens and a preparation method and application thereof. The preparation raw material of the resin material comprises dihydroxy-p-phenylenedimethylene formadehyde, an aliphatic diamine and a modifier; the modifier comprises a fluorine-containing silane compound. The liquid lens of the application comprises a film material which is hydrophobic and superoleophilic under water, can realize long-term liquid lens zooming in a high-temperature environment, and thus guarantees high reliability of the liquid lens technology application.

The invention relates to an accommodative intraocular lens comprising: - a fluid lens with an optical axis, wherein the fluid lens comprises: ◯ a first lens ring with a top, a bottom, and a lens outer wall, wherein a first cavity filled with fluid is located between the first lens ring and the lens outer wall; ◯ a first lens component comprising a first lens membrane and a second lens membrane enclosing a second cavity at least partially filled with fluid, wherein a third cavity is provided between the first cavity and the second cavity, connecting the first cavity to the second cavity; - an actuator formed in a ring shape around a central axis, wherein the actuator comprises: ◯ a first contact element configureda first proximal end of a contact element is configured to exert an axial pressure parallel to the optical axis on the upper surface of the first lens ring; a second contact element is configured to exert an axial pressure parallel to the optical axis on the underside of the first lens ring with its second proximal end; a third contact element is configured to exert a radial pressure on the outer surface of the lens with its third proximal end, depending on the position of the first and second contact elements.

The utility model provides a kind of front joint and light curing machine, it is related to medical instrument field.The utility model provides a kind of front joint and light curing machine, by setting light source assembly, light emitted by light source assembly works through light transmission port, light beam is emitted from light outlet and effectively irradiates to photosensitive resin material, so that it solidifies;By setting liquid lens, the focal length of liquid lens is changed under the condition of additional voltage, the diameter of light beam emitted by light source assembly is adjusted, and then the spot diameter formed after the light beam emitted from light outlet is emitted for a distance is adjustable;The application is continuously adjusted by the above design in the case where not depending on mechanical movement, the spot diameter formed after the light beam emitted from light outlet is emitted for a distance in limited space is continuously adjusted, so that doctor can select the diameter of spot according to actual operation condition to select different voltage, and the whole machine structure of light curing machine is optimized.

This invention discloses a microscopic imaging focusing method and an automatic focusing device, belonging to the field of microscopic optical imaging technology. The microscopic imaging focusing method sequentially includes: preparation, coarse focusing, and fine focusing; the preparation includes calibrating the relationship between the image sharpness of chip markers and the driving current of the liquid lens. This invention is applied to the imaging focusing of complex biological samples containing a large number of impurities, solving the technical problem that existing automatic focusing methods cannot achieve fully automatic, high-speed focusing on complex biological samples within microfluidic chips, enabling fully automatic and rapid focusing for highly complex biological samples.

The utility model relates to circuit technical field especially, and more particularly to a kind of laser control circuit of code scanning equipment, comprising: total power supply connection end, rear power supply connection end, CPU connection end, camera module connection end, power switch module, laser control module, laser module;Wherein, the total power supply connection end is connected with power switch module, laser control module respectively, the rear power supply connection end is connected with power switch module, laser module respectively, the camera module connection end is connected with power switch module, laser control module respectively, the CPU connection end is connected with power switch module, laser control module respectively, the power switch module is also connected with laser control module, laser module respectively.By the logic control between JK latch and triode, it is realized that code scanning equipment measures distance when taking picture, and adjusts liquid lens posture, and control laser mark blanking when decoding, eliminates the interference of laser mark to decoding process.

A variable focal length lens device includes: a liquid resonant liquid lens unit having a refractive index changeable in response to an inputted drive signal; a scanning range setter setting a predetermined standard frequency band as a scanning range of a frequency of the drive signal; a resonance frequency detector scanning the frequency of the drive signal over the scanning range and detecting a resonance frequency of the liquid lens unit based on an oscillation state of the liquid lens unit; and a resonance frequency estimator calculating an estimated value of a target resonance frequency based on a standard resonance frequency detected from the standard frequency band by the resonance frequency detector, the scanning range setter further setting a target frequency band including the estimated value of the target resonance frequency as the scanning range.

The present application relates to a kind of code scanning imaging components, specifically, a kind of large target surface diaphragm front code scanning imaging component based on liquid lens adjustable focus, comprising: liquid lens, wire, diaphragm, first meniscus lens, first planoconvex lens, double concave lens, planoconcave lens, double convex lens, second planoconvex lens, second meniscus lens, the refractive power between each device meets the following conditions simultaneously:‑3<(φ1+φ3) / (φ2+φ4)<‑1;‑3<(φ3+φ5) / (φ4+φ6)<‑1;‑2<(φ1+φ2+φ5+φ6) / (φ3+φ4+φ7)<‑0.5.Double convex lens, second planoconvex lens, second meniscus lens play a good role in eliminating aberration and correcting field curvature;First meniscus lens and first planoconvex lens are matched to eliminate wavefront aberration generated by liquid lens;Double concave lens and planoconcave lens effectively modulate the dense light at the front diaphragm of imaging component, so that the situation that large-angle light grazing incidence lens does not appear in large target surface imaging imaging component with diaphragm front.

The present invention provides a liquid lens device capable of controlling the focal position without the need for mechanically moving parts. [Solution] A liquid lens device 1A comprising a case 2 having a cylindrical side wall portion 2a, a liquid lens 3 having liquid contained inside the side wall portion 2a, an annular ultrasonic transducer 4 positioned on the upper end side of the side wall portion 2a, and a drive control unit 5 that applies a voltage signal to the ultrasonic transducer 4, wherein visible light is transmitted through the case 2 and the liquid lens 3, the ultrasonic transducer 4 includes a plurality of transducer portions 4-1 to 4-8 divided in the circumferential direction, the drive control unit 5 applies voltage signals with different phases to the plurality of transducer portions 4-1 to 4-8, generates a traveling wave of flexural vibration propagating in the circumferential direction on the side wall portion 2a, propagates ultrasonic waves from the traveling wave into the liquid, and generates a swirling flow that flows in the circumferential direction in the liquid.

The application discloses a kind of digestive tract optical coherence tomography and endoscope dual-mode imaging device and detection system;The device includes OCT in-vitro optical path module and dual-mode capsule probe.Dual-mode capsule probe is connected with OCT in-vitro optical path module by signal transmission line with optical fiber core line inside.Dual-mode capsule probe includes capsule shell, dichroic mirror, OCT acquisition module, endoscope imaging module and rotating drive component.OCT acquisition module includes lens support, beam collimator, achromatic lens, liquid lens and aspheric lens.The application is tilted in the inner cavity of capsule probe Middle part dichroic mirror, the near-infrared light and visible light reflected in the same position in digestive tract at the same time are separated after being separated respectively to OCT acquisition module and endoscope imaging module;So that the OCT image and endoscopic image of the same position in digestive tract are simultaneously collected, to facilitate the comprehensive analysis of digestive tract pathological condition.

This invention provides a liquid lens and its manufacturing method. The liquid lens includes a first electrode, which comprises a first housing and a top cover disposed at one end of the first housing. The top cover is elastic and its thickness is less than that of the first housing. A through hole is provided on the top cover, and a first light-transmitting plate corresponding to the position of the through hole is disposed within the first housing. The liquid lens also includes a second electrode, one end of which is nested within the first housing. A receiving space is formed between the first and second electrodes, and an optical liquid is disposed within the receiving space. This invention enhances the deformability of the first electrode by reducing the thickness of the top cover of the first electrode and using an elastic top cover. While meeting the requirements for large-aperture light transmission, the thickness of the liquid lens is reduced, solving the reliability problem caused by the thermal expansion and contraction of the optical liquid within the liquid lens, and reducing the manufacturing difficulty and cost of the liquid lens.

The utility model discloses a kind of liquid lens focusing miniature microscope, including first lens, second lens, field stop, third lens, fourth lens, fifth lens, sixth lens and seventh lens sequentially arranged from object plane to image plane along optical axis, wherein, first lens and second lens are glued into glued lens, glued lens has positive focal power;Third lens is liquid lens, including two pieces of window sheet and two kinds of liquid, focusing is realized by changing the curvature of liquid surface;Fourth lens, fifth lens and sixth lens have positive focal power, and seventh lens has negative focal power.The system has 500 μm wide field, and numerical aperture is 0.6, while meeting high-resolution wide-field imaging performance, 100 μm axial detection depth is realized by liquid lens focusing, can be focused to different depth tissue information, and small in size, light in weight, can be used with fiber bundle, with wide application prospect.

This invention discloses a close-up focusing system and lens, belonging to the field of optical imaging technology. It includes a first lens, a first cemented film, a liquid lens, a second lens, a third lens, and a second cemented film. From the object plane side to the image plane side, the first lens, the first cemented film, the liquid lens, the second lens, the third lens, and the second cemented film are arranged sequentially along the optical axis. This invention achieves rapid focusing at shorter object distances by placing the liquid lens between the first lens, the first cemented film, the second lens, the third lens, and the second cemented film, meeting the high-speed requirements of modern close-up photography. Simultaneously, the use of the liquid lens makes the lens lighter, optimizing portability, and avoiding the physical and energy losses and mechanical deformation of traditional mechanical modules, thus improving the lifespan of the device.

The application provides a head-up display device and a control method thereof. The head-up display device comprises: an image generation unit internally provided with a liquid lens array, configured to generate a light beam of a target image and emit the light beam after refraction by the liquid lens array; an eye position monitoring unit configured to collect current eye position information of a user; and a controller connected to the image generation unit and the eye position monitoring unit respectively and configured to adjust a focal length of the liquid lens array based on the current eye position information so that a virtual image of the target image formed in front of the user's eyes is focused on the same focal plane.

The utility model discloses a piezoelectric liquid lens zoom periscopic lens, including the prism subassembly, liquid lens subassembly and lens assembly that set gradually along the light path, the lens assembly can move along the light path before and after under the drive of drive mechanism to adjust the interval between liquid lens subassembly to realize zoom, or, the liquid lens in liquid lens subassembly is extruded to change the curvature of liquid lens and realizes focusing. The utility model discloses through liquid lens curvature regulation and lens assembly interval control, realizes long focus and macro function integration, replaces traditional multi -mode group switching, avoids focal point deviation and light loss. Through the integration of zoom module and focusing module, the module thickness can be greatly compressed, and is suitable for mobile phone, unmanned aerial vehicle and other ultrathin equipment.

This invention discloses a tunnel crack inspection system and method based on a scene camera and a liquid lens. The tunnel crack inspection system mimics the human eye's "first gaze, then fixation" mechanism, constructing a two-stage collaborative detection system consisting of a large-field-of-view scene camera and a liquid lens camera. It achieves automatic focusing and high-precision crack imaging of the target area through electronic control. The first stage, a scene perception module composed of a large-field-of-view scene camera and a depth camera, performs global scanning and spatial ranging to quickly locate suspected defect areas and their depth information. The second stage, a high-resolution liquid lens camera, automatically focuses based on the depth information to perform fine imaging and crack quantification analysis of suspected crack areas.