84 results about "Long-focus lens" patented technology

The invention provides a multi-modal moving target recognition and tracking system and method based on dual-lens cooperation and electronic equipment, and aims to ensure the target recognition accuracy and continuous tracking effect in a complex environment by integrating a YOLOv10 target recognition algorithm, a face recognition algorithm, a DeepSORT multi-target tracking algorithm and a trajectory prediction algorithm. Through A * path planning and a self-adaptive PID controller, efficient path optimization and rapid alignment of the holder are realized, so that the telephoto lens can be rapidly aligned with a target, and the defect that the view field of a fixed lens is limited is eliminated. In combination with face recognition and target trajectory prediction technologies, tracking of the target can be continuously kept when the target is shielded. Through multi-modal data fusion, global coverage and local detail capture of the target are realized, and real-time and reliable data support is provided for autonomous decision making of the unmanned vehicle in a dynamic environment.

The embodiment of the invention relates to a target tracking method and system. The method comprises the following steps: acquiring a first image of a target object shot by a wide-angle lens; determining first position information of a target object in the first image; based on the first position information and a view position relation, whether a target object is located in the second view range or not is determined, a determination result is obtained, and the view position relation represents the position relation between the first view range and the second view range; under the condition that the determination result shows that the target object is located in the second visual field range, obtaining a second image of the target object shot by the telephoto lens; and performing target tracking on a target object based on the second image. Therefore, the accuracy of target tracking can be improved.

The application discloses a long-focus lens module and electronic equipment, the long-focus lens module comprises an imaging lens and a light beam deflection device; the light beam deflection device is arranged in the imaging light path of the imaging lens and is used for optically compensating a residual offset a still existing after compensation by the anti-shake module; the light beam deflection device comprises an angle or face shape adjustable transmission type optical element; the transmission type optical element is configured to switch from an initial state to a deflection state, and an image height change is caused by angle deflection or face shape change, so that an optical compensation amount of size-a is introduced to offset the residual offset a; in the deflection state, the relationship between the center field of view image height change DeltaIHc, the edge field of view image height change DeltaIHe and the lens magnification x satisfies the relationship formula: 0.07 <= DeltaIHe / DeltaIHc / x <= 0.4. The application introduces the image height change by angle deflection or face shape change of the transmission type optical element, so that the image height change corresponds to the change caused by the body shake, thereby weakening the influence of the body shake on the picture.

The embodiment of the application discloses an image acquisition device, a terminal, a method and a storage medium for a video conference, and relates to the technical field of camera terminals. The device comprises: a wide-angle lens for acquiring a first field of view area; a plurality of telephoto lenses symmetrically arranged with respect to the center of the wide-angle lens, the optical axes of the plurality of telephoto lenses intersecting with the optical axis of the wide-angle lens at the same virtual optical center, and the absolute value of the difference between the second field of view area obtained by merging the field of view areas of the plurality of telephoto lenses and the first field of view area being less than a field of view area threshold. The image acquisition device of the embodiment of the application combines the wide-angle lens and the telephoto lens, can improve the field of view coverage rate, can also fuse the telephoto lens and the wide-angle lens to perform lossless magnification on the picture, avoids image distortion caused by different focusing information of different lenses based on the setting of the virtual optical center and the field of view area, and can fuse the telephoto lens to perform magnification close-up in most of the field of view area of the wide-angle lens.

The application discloses a visible light wide-band long-focus lens, a camera module and a terminal device. The visible light wide-band long-focus lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along an optical axis from an object plane to an image plane; one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is an ultra-surface lens, and the rest lenses are all spherical surface lenses; the application combines the five spherical surface lenses with the one ultra-surface lens, and cooperates the lens materials and optical powers, so that the total optical length of the lens is effectively compressed, and the miniaturization and light weight design is realized. Meanwhile, the relationship among the relative illumination RI , the effective area size of the ultra-surface lens D M and the optical distortion value D 0 is optimized, so that the long-focus lens has the ability of high resolution and low aberration, and especially realizes the advantages of high-resolution imaging in the visible light wide-band range.

1. The name of the design product: mobile phone long-focus lens (Meiya 718Pro). 2. The use of the design product: a mobile phone long-focus lens. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention relates to the technical field of optical lens calibration and testing, in particular to a continuous zoom lens focal length automatic calibration device which comprises a bearing plate, a fixing plate arranged on the surface of the bearing plate and an image sensor fixedly arranged on the surface of the fixing plate. A focal length target adjusting mechanism and a target regulation and control mechanism are arranged on the upper surface of the bearing plate; through cooperation of a plurality of components in the focal length target adjusting mechanism, when the lens continuously zooms, the driving motor is started, so that the driving shaft drives the connecting rod and the lens assembly to move, meanwhile, through meshing of the driving gear, the threaded rod drives the target unit to synchronously move, and therefore the lens assembly and the target unit synchronously move; the long-focus lens is matched with a farther object distance, the short-focus lens is matched with a closer object distance, and based on the trigger switch, when the connecting rod is in contact with the trigger switch, the lens assembly is started to shoot, the shot image is displayed on the image sensor, and the focal length is automatically calibrated.

The invention discloses a motorized high-speed wind tunnel femtosecond laser molecular marker speed measurement system, and belongs to the technical field of femtosecond laser molecular marker speed measurement. The problem of flow field measurement of integral movement is solved. The system comprises a movable femtosecond laser source platform, a plano-convex lens, a telephoto lens, an image intensifier, a high-speed camera and a computer device, femtosecond laser emitted by the movable femtosecond laser source platform penetrates through the plano-convex lens and irradiates a flow field area to be measured, the movable femtosecond laser source platform is connected with the image intensifier and the high-speed camera, the high-speed camera is connected with the image intensifier and the computer device, the image intensifier is connected with the telephoto lens, and the telephoto lens is connected with the computer device. The telephoto lens is used for shooting a to-be-measured flow field area irradiated by the femtosecond laser. According to the invention, the femtosecond laser, the temperature control module, the sequential control unit and the light path shaping component are packaged in the same movable platform in a centralized manner, so that the measurement system has good overall stability and deployment flexibility in a wind tunnel environment.

A telephoto lens with excellent resolution is achieved. In the infrared imaging lens (1), each of a first lens (L1), a second lens (L2), and a third lens (L3) is composed of chalcogenide glass having a refractive index of 2.5-4.0 at a wavelength of 10 [mu] m, the total system focal length is at least two times the diameter of an imaging circle, the first lens and the third lens are meniscus lenses having positive refractive power, and the refractive index of the first lens (L1), the second lens (L2), and the third lens (L3) is at least two times the diameter of the imaging circle. The second lens is a meniscus lens with negative focal power.

The invention relates to a large-aperture high-definition security telephoto lens and an imaging method thereof, and is characterized in that an optical system of the lens has five lenses with focal power, and the five lenses are sequentially a first lens, a second lens, a third lens, a fourth lens and a fifth lens along the incident direction of an optical path; a diaphragm is arranged on the rear side of the first lens; the first lens is a plano-convex positive lens, the object side surface is a convex surface, and the image side surface is a plane; the second lens is a meniscus positive lens, the object side surface is a concave surface, and the image side surface is a convex surface; the third lens is a meniscus positive lens, the object side surface is a convex surface, and the image side surface is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface; the fifth lens is a meniscus positive lens, the object side surface is a convex surface, and the image side surface is a concave surface; wherein the first lens and the third lens are glass spherical lenses, and the second lens, the fourth lens and the fifth lens are plastic aspheric lenses.

Disclosed in the present invention is an optical quasi-three-dimensional space converter, which is capable of converting a three-dimensional space into a large number of position-fixed two-dimensional real images having different object-image distance-related parameters. The optical quasi-three-dimensional space converter comprises a variable-focus telephoto lens, a short-focus micro-lens array and an object-image distance-related parameter adjuster; one of two lenses is used for receiving light from an object side to form an intermediate image, and the other is used for converting the intermediate image into a virtual image or a real image in a three-dimensional space; an intermediate image horizontal flipper performs left-to-right flipping on the intermediate image in a horizontal direction for real-image space conversion; and the object-image distance-related parameter adjuster is used for adjusting the focal length of the variable-focus telephoto lens, the focal length of the short-focus micro-lens array, the focal length of a camera lens, and relative positions between the lenses. The optical quasi-three-dimensional space converter in the present invention can be used for wide-field-of-view three-dimensional photographic cameras, wide-field-of-view three-dimensional projectors for naked-eye observation, three-dimensional optical processing machines, artificial eyes, etc.

The invention discloses a dual-optical-path coaxial transmit-receive system and a laser radar. The transmit-receive system comprises a laser generation module, a silicon optical chip, a short-focus lens, an optical path turning module, a beam splitter prism and a long-focus lens. The silicon optical chip comprises a transmitting waveguide and a receiving waveguide; the laser generation module generates laser; the short-focus lens, the light path turning module, the beam splitter prism and the long-focus lens are sequentially located on a laser light path, the short-focus lens collimates laser passing through the transmitting waveguide, then the laser enters the light path turning module to be subjected to light path turning, and the laser enters the beam splitter prism; the beam splitter prism reflects the laser to an object to be measured; receiving return laser reflected from the object to be measured; and the long-focus lens focuses the returned laser to the receiving waveguide. According to the above structure, through the arrangement of the short-focus lens and the long-focus lens, laser spots are reduced, the light energy density of the spots is enhanced, the light receiving aperture is enlarged, the light receiving energy is improved, it is guaranteed that the emitted laser spots are within the effective receiving view field of the long-focus lens, and the light receiving efficiency and the distance measuring accuracy are improved.

This application provides an optical system and an electronic device. The optical system includes lens groups, comprising a first lens group, a second lens group, and a third lens group. The first lens group includes a first lens, a second lens, a third lens, and a fourth lens; the second lens group includes a fifth lens, a sixth lens, a seventh lens, and an eighth lens; and the third lens group includes a ninth lens, a tenth lens, an eleventh lens, and a twelfth lens. The first and second lenses are cemented together, the sixth and seventh lenses are cemented together, and the ninth and tenth lenses are cemented together, satisfying the following conditions: -16.46 ≤ f9 / CT9 ≤ -13.80; 1.80 < f10 / CT10 < 2.65; 3.20 ≤ FG2 / FG3 < 3.65. This optical system achieves a balance between high image quality, compactness, and environmental reliability for external telephoto lenses.

This invention belongs to the technical field of non-destructive testing in nuclear power, specifically disclosing an infrared non-destructive testing method for weld cracks in sodium-cooled fast reactor pipelines. When an anomaly is detected by thermocouples in the secondary loop pipelines of a sodium-cooled fast reactor, the reactor needs to be shut down. At this time, the liquid sodium in the pipeline will slowly cool down. Due to structural differences, a surface temperature difference will form between defective and non-defective areas during the cooling process. This invention utilizes an infrared thermal imager equipped with a telephoto lens and a laser rangefinder to photograph the weld seam of the cooled pipeline after the insulation layer has been removed. Then, a trained image segmentation network is used to segment and identify the image. Through curve fitting, the pixel length of the segmented area is extracted, and combined with laser ranging information, the true size of the weld crack is determined. This invention overcomes the limitations of traditional methods for non-destructive testing of high-temperature pipelines through non-contact infrared non-destructive testing technology.

The invention provides a visible light continuous zooming super-long focus lens, and relates to the technical field of optical imaging. Comprising a cassette telescope group with positive focal power, a field lens with negative focal length, a collimation group with positive focal power, a front fixing group with positive focal power, a diaphragm, a zoom group with negative focal power, a compensation group with positive focal power and a rear fixing group with positive focal power which are arranged in sequence from an object plane to an image plane along a light incidence direction, wherein the cassette telescope group with positive focal power, the field lens with negative focal length, the collimation group with positive focal power, the front fixing group with positive focal power, the diaphragm, the zoom group with negative focal power, the compensation group with positive focal power and the rear fixing group with positive focal power are arranged in sequence from an object plane to an image plane. The zoom group is mainly used for changing the focal length of the lens, and the compensation group is mainly used for compensating the change of the position of an image plane in the zooming process, so that the aberration such as secondary spectrum can be well corrected through the focal power arrangement form, the length of an optical system is reduced, and the structure is compact. The lens adopts a plurality of glued group lenses, correction of chromatic aberration of an optical system is facilitated, meanwhile, the number of the lenses is small, and the transmittance of the system is improved.

The invention discloses a hybrid star sensor daytime star measuring device, which relates to the technical field of celestial navigation, and comprises a star measuring assembly, a two-dimensional fast reflector, a control circuit board and a shell, all the parts are integrally installed on the shell, the satellite measuring assembly is arranged in the shell and comprises a telephoto lens, a multi-band-pass satellite observation window and a satellite measuring camera, reflected light rays are converged on the satellite measuring camera arranged behind the telephoto lens through the telephoto lens, the multi-band-pass satellite observation window is arranged between the telephoto lens and the satellite measuring camera and divided into a plurality of areas, and the satellite measuring camera is arranged in the shell. Only light of different specific wavebands can pass through each region, and the light is moved to the optimal region of the multi-band-pass star observation window by combining small-angle adjustment of the reflector, so that rapid selection of the wavebands is realized; the two-dimensional fast reflecting mirror and the satellite measuring assembly are coaxially arranged, the projection position is rotated and offset through two-axis control, and the small view field is expanded into the large view field by fast rotation and image splicing. The device solves the problem of background saturation of satellite measurement in the atmosphere in the daytime, and improves the signal-to-noise ratio and the adaptability.

The invention relates to the technical field of lens focusing, and particularly provides a self-adaptive image focusing projection lens, which comprises a lens body used for projecting to a screen, and further comprises a self-adaptive focusing module integrally mounted on the side surface of the lens body, the self-adaptive focusing module comprises a shell, a TOF distance measuring sensor, a camera module, a focusing motor and an MCU processor, the shell is connected with the lens body, the shell is used for protecting the TOF distance measuring sensor, the camera module and the MCU processor, the MCU processor is connected with the TOF distance measuring sensor, the camera module and the focusing motor, and the focusing motor is connected with the shell. The lens body can integrate the function of automatic focusing, and under different projection application scenes, different lenses such as a long-focus lens, a short-focus lens or an ultra-short-focus lens can be selected and matched to realize the function of adaptive picture focusing.

The invention discloses a small-size long-focus optical lens, a camera module and electronic equipment. The small-size long-focus optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged from an object plane to an image plane along an optical axis; the first lens is a prism, and the object side surface or the image side surface of the prism is provided with a super lens or a super surface layer; the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are all aspheric lenses. By introducing the super-lens or the super-surface layer and utilizing the plane structure and the phase regulation and control capability of the super-lens or the super-surface layer, the required focal power is realized, meanwhile, the axial size of the lens is remarkably reduced, the chromatic aberration is effectively corrected through the special dispersion characteristic of the super-surface, and full-view-field high-resolution imaging is realized in the visible light wave band. According to the invention, the problem that the volume limitation and the image quality of the telephoto lens in miniaturized equipment are difficult to consider at the same time is solved, and the telephoto lens is suitable for the imaging fields with thickness requirements, such as smart phones and vehicle-mounted cameras.

The invention provides an optical telephoto lens, a camera module and terminal equipment, the optical telephoto lens sequentially comprises a lens assembly and a refraction and reflection prism from an object side to an image side, the lens assembly sequentially comprises a first lens, a second lens, a third lens and a fourth lens from the object side to the image side, the first lens has positive focal power, and the second lens has negative focal power; the first lens has positive focal power, the second lens has positive focal power, the third lens has negative focal power, the fourth lens has positive focal power, and the optical telephoto lens meets the following conditions: 3.32 lt; f / IHlt; f represents the effective focal length of the optical telephoto lens, and IH represents the radius of the maximum effective imaging circle of the optical telephoto lens. The optical telephoto lens provided by the invention has the characteristics of large image surface, long focal length, large aperture, low height and excellent imaging performance.

The application discloses a virtual-real fusion image matting method and device, electronic equipment and storage medium. The method comprises the following steps: collecting an ultra-long-focus lens image of a current scene, and extracting pixel features of a specified part region of an object subject and a green screen region on the ultra-long-focus lens image to obtain a part standard feature set and a green screen standard feature; collecting a to-be-processed lens image of the current scene, and mapping coordinates of each pixel of the part standard feature set to a coordinate system of the to-be-processed lens image to obtain a part feature mapping region; performing image matting on the to-be-processed lens image to obtain an initial mask; matching the pixel features in the part feature mapping region with the part standard feature set, correcting the gray values of the pixels in the initial mask, and obtaining an optimized mask; matching the pixel features of the green screen region of the to-be-processed lens image with the green screen standard feature, performing color compensation on the green screen region of the to-be-processed lens image, and obtaining an optimized lens image; and performing image matting on the optimized lens image based on the optimized mask to obtain a final image matting image.

The utility model relates to the technical field of optical lenses, and discloses an optical lens fixing structure which comprises a first fixing plate and a camera body, the top of the first fixing plate is fixedly connected with a quarter bolt, the quarter bolt is in threaded connection with the interior of the camera body, one side of the first fixing plate is fixedly connected with a supporting rod, and the supporting rod is in threaded connection with the interior of the camera body. A fixing assembly is arranged at the top of the supporting rod; and the fixing assembly comprises a second fixing plate, the bottom of the second fixing plate is slidably connected into the supporting rod, and a worm wheel is rotationally connected into the second fixing plate. According to the utility model, the second fixing plate sleeves the outer wall of the lens, and the worm gear drives the cam to rotate through the rotating shaft, so that the rotating shaft slides and is limited in the first limiting block through the second limiting block at one end of the connecting rod, and then the lens is fixed through the cam, thereby achieving the effect of adapting to and fixing lenses with different sizes, and solving the problems of long size and poor stability of long-focus lenses. Therefore, the convenience of the lens fixing structure is improved.

The embodiment of the utility model provides a telephoto lens, a shooting device and a movable platform, the telephoto lens comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from an object side to an image side along an optical axis, and the telephoto lens satisfies the following three expressions: 4.1 lt; omega < lt >; 9.0, 1.9 lt, 9.0, 1.9 lt; f / Diamlt; 3.4, 60 lt, 3.4, 60 lt; vdF and omega are the maximum angle of the incident light of the first lens, f is the overall focal length of the telephoto lens, Diam is the larger outer diameter of the first lens and the second lens, and vdF is the larger Abbe number of the first two lenses with positive focal power close to the object side. According to the telephoto lens provided by the embodiment of the utility model, the size miniaturization of the telephoto lens can be realized, especially the length size of the lens along the optical axis direction can be reduced, and the imaging quality of the telephoto lens can be improved.

The embodiment of the invention provides a bar code reading engine, code reading equipment and a bar code reading method. The bar code reading engine comprises a first imaging unit, a second imaging unit, an aiming unit and a control unit, wherein the first imaging unit comprises a variable-focus short-focus lens assembly, the back focal length of the first imaging unit can be changed, clear imaging of bar codes at different distances is achieved, and the depth of field of the bar code recognition engine is enlarged. Meanwhile, the second imaging unit comprises a telephoto lens assembly with a fixed focal length, and the second imaging unit is configured to be capable of clearly imaging at a preset distance, so that when the user positions the target bar code at the preset distance based on the aiming unit, the bar code can be read based on the image acquired by the second imaging unit; therefore, accurate reading of the minimum code is ensured.

The invention provides a lens switching method and device, electronic equipment and a storage medium, and relates to the technical field of shooting equipment. The method comprises the following steps: acquiring an image shot by a first lens; when it is detected that the electronic equipment moves according to a preset mode, predicting a target shooting distance; based on the predicted target shooting distance, determining a first visual angle mapping relation so as to display an image shot by the first lens at a visual angle mapped by the first visual angle mapping relation; when it is detected that the lens used for shooting the image is switched from the first lens to the second lens, determining a second visual angle mapping relation; and obtaining an image shot by the second lens, and switching the currently displayed image shot by the first lens into the image shot by the second lens based on the first visual angle mapping relation and the second visual angle mapping relation. According to the embodiment of the invention, the process of switching the short-focus lens to the long-focus lens is smoother, and the image jump in the switching process is reduced.

The invention discloses a small-size high-definition unmanned aerial vehicle lens which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged in the direction from the object side to the image side along the optical axis. The first lens has a positive refractive index, etc. According to the lens, the structural design of seven lenses is adopted, the compact design of an optical system is achieved by reasonably controlling the positive and negative matching of the refractive indexes of all the lenses of the lens, complex and thick optical elements of a traditional telephoto lens do not need to be adopted, the total length of the lens can be effectively shortened, and the overall size and weight of the lens are greatly reduced. The design can fully adapt to the limited load space of the unmanned aerial vehicle, reduces the influence on the flight stability, cruising ability and maneuvering flexibility of the unmanned aerial vehicle, improves the portability and operation efficiency of the unmanned aerial vehicle, and breaks through the application scene constraint of the unmanned aerial vehicle caused by the size limitation of a traditional lens.

The application provides a palm print and palm vein image acquisition device, method, apparatus and electronic device. The acquisition device comprises a short-focus lens, a long-focus lens, a first half-transmission half-reflection mirror, a first reflection mirror, a second half-transmission half-reflection mirror, a second reflection mirror, a visible light photosensitive element and a near-infrared light photosensitive element. When the short-focus lens is turned on, visible light is transmitted from the short-focus lens and the first half-transmission half-reflection mirror in sequence and propagates to the visible light photosensitive element, and near-infrared light is transmitted from the short-focus lens and is reflected by the first half-transmission half-reflection mirror and the second reflection mirror in sequence and propagates to the near-infrared light photosensitive element; when the long-focus lens is turned on, near-infrared light is transmitted from the long-focus lens and the second half-transmission half-reflection mirror in sequence and propagates to the near-infrared light photosensitive element, and visible light is transmitted from the long-focus lens and is reflected by the second half-transmission half-reflection mirror and the first reflection mirror in sequence and propagates to the visible light photosensitive element. By using one short-focus lens and one long-focus lens, the acquisition distance is greatly expanded.

The utility model relates to the technical field of optical imaging, and discloses a telephoto lens which sequentially comprises a lens assembly, a prism and an image sensor from an object side to an image side, the lens assembly comprises a plurality of lenses arranged in sequence, and the prism comprises an incident plane facing the lens assembly, a first reflecting plane, a second reflecting plane and an emergent plane facing the image sensor. The first reflecting surface is used for reflecting light from the incident surface for the first time and reflecting the light to the second reflecting surface, the second reflecting surface is used for reflecting light from the first reflecting surface for the second time and reflecting the light to the emergent surface, the incident surface is perpendicular to the second reflecting surface, and the first reflecting surface and the emergent surface are in the same plane. The emergent surface is obliquely arranged close to the incident surface relative to the second reflecting surface, and the imaging surface of the image sensor is arranged relative to the emergent surface. According to the telephoto lens, the overall height is effectively reduced, and meanwhile, large aperture, large target surface and lens miniaturization are realized. The utility model further discloses the electronic equipment.

Disclosed are a control method, an apparatus, a device for a camera device, and a storage medium, and relates to the technical field of monitoring control. The control method for the camera device includes: after obtaining a captured image taken by the fisheye lens of the bullet camera, identifying a target to be focused from the captured image; controlling the telephoto lens of the dome camera to capture a spatial compression image containing detailed features of the target to be focused; analyzing the motion behavior of the target to be focused based on the spatial compression image; and based on the motion behavior, adjusting the shooting angle of the fisheye lens of the bullet camera, and adjusting the monitoring angle and monitoring width of the telephoto lens of the dome camera.

The utility model discloses a kind of group long focus lens, group long focus lens includes first lens group, turn-back prism, second lens group and chip imaging assembly;Turn-back prism includes light inlet side and light outlet side, and light inlet side and / or light outlet side of turn-back prism is provided filter film;First lens group includes at least three lenses, is arranged before the light inlet side of turn-back prism;Second lens group includes at least one lens, is arranged after the light outlet side of turn-back prism, or is provided immediately adjacent the light inlet side of turn-back prism, and located between first lens group and the light inlet side of turn-back prism;First lens group and / or second lens group move along optical axis direction and focus.The utility model discloses a kind of group long focus lens, satisfy the demand of miniaturization.