127 results about "Long-focus lens" patented technology

The invention discloses a target tracking shooting method and device and a storage medium, relates to the technical field of multi-axis pan-tilt cameras, is applied to a pan-tilt control system, and comprises the following steps: if a target tracking process is triggered, selecting a target tracking source according to a priority and target detection result confidence corresponding to each tracking source, the target tracking source is a mobile terminal video source, a telephoto lens video source or a wide-angle lens video source; the position of a tracking object output by a target tracking process corresponding to the target tracking source is read, and the position of the tracking object is the position of the tracking object in a video picture corresponding to the target tracking source; and determining a pose adjustment parameter of the multi-axis holder according to the position of the tracking object, and controlling the multi-axis holder to rotate based on the pose adjustment parameter, thereby solving the technical problem of tracking interruption caused by incapability of effectively switching alternative sources when single tracking source detection is unreliable in the prior art, and improving the tracking precision and the tracking stability.

This invention discloses a large-aperture medium-long focal length day-night confocal lens and electronic device. The lens comprises, from object side to image side, a first lens, a second lens, an aperture stop, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The first lens has positive optical power and has an object-side surface facing the object side and an image-side surface facing the object side; the object-side surface is convex, and the image-side surface is concave. The ratio of the first lens to the lens focal length ranges from 0.961 to 1.280:1. The second lens also has positive optical power and has an object-side surface facing the object side and an image-side surface facing the object side; the object-side surface is convex, and the image-side surface is concave. The ratio of the second lens to the lens focal length ranges from 0.719 to 1.514:1, etc. This invention solves the confocal difference problem of medium-long focal length lenses during day and night use through lens configuration and reasonable optical power distribution.

The utility model discloses a smoke imaging device fusing ultraviolet ray and visible light, which comprises an ultraviolet detection module, a visible light detection module and a signal control module, the ultraviolet detection module comprises an ultraviolet telephoto lens, a shading cylinder, an ultraviolet camera and an optical filter device, and the shading cylinder is arranged at the front end of the ultraviolet telephoto lens; the visible light detection module comprises a visible light telephoto lens matched with the ultraviolet telephoto lens and a visible light camera; the visible light detection module is located on one side of the ultraviolet detection module so that ultraviolet light and visible light can be in the same view field. And the signal control module is respectively connected with the ultraviolet detection module and the visible light detection module and is used for receiving information and processing data. The scheme provided by the utility model can solve the problems of poor portability, poor sensitivity, complex operation, limited precision, high cost, short detection distance and the like of the existing technology for monitoring pollutants such as sulfur dioxide, nitrogen oxide and the like, and has great application prospects and social significance.

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 invention provides an imaging projection device based on galvanometer deflection and a bidirectional cooperative detection method.The imaging projection device based on galvanometer deflection comprises a camera galvanometer module and a laser galvanometer module, and the laser galvanometer module comprises a laser transmitter, a photoelectric detection unit and a second galvanometer; laser is emitted to the to-be-measured workpiece for projection and information output; the camera galvanometer module comprises an area-array camera, a telephoto lens and a first galvanometer and is used for imaging a workpiece to be measured and sensing information. The bidirectional cooperative detection method comprises a detection mode of first imaging and then projection and a detection mode of first projection and then imaging. According to the invention, the camera galvanometer module and the laser galvanometer module can be matched with each other, two detection modes of first imaging and then projection and first projection and then imaging are realized, and detection and projection marking of defect and geometric feature tolerance conformity are supported.

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 utility model relates to the field of camera modules, and discloses a high magnification camera module with a built-in ultra-thin prism, which comprises a support, an anti-shake module, a lens module and a prism, the anti-shake module, the lens module and the prism are fixed on the prism, the prism is trapezoidal and comprises at least two reflecting surfaces, and the anti-shake module and the lens module are positioned on the same side of the prism and are respectively opposite to one reflecting surface. Light entering the lens module enters the anti-shake module through at least two times of reflection through the prism. According to the telephoto lens provided by the utility model, a photosensitive chip with a larger size can be placed and a longer distance can be shot at the same time.

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.

The invention discloses an ultra-long focal lens. The ultra-long focal lens sequentially comprises a first lens group, a second lens group, a prism, an optical filter and an imaging chip from an object side to an image side, the second lens group moves along the optical axis during focusing; the prism comprises an incident plane, a first reflecting plane, a second reflecting plane, a third reflecting plane, a fourth reflecting plane, a fifth reflecting plane and an emergent plane, and the incident plane, the second reflecting plane, the fourth reflecting plane and the emergent plane are the same plane; the ultra-long focal lens satisfies at least one of 0.273 < = MIC / 2-L4-f '* tan (1 degree) < = 0.338 and 0.103 < = L2-f' * tan (1 degree) < = 0.123, MIC is the maximum imaging circle diameter of the ultra-long focal lens, L4 is the diameter of the excircle of the imaging chip, f 'is the system focal length of the ultra-long focal lens, and L2 is the distance between the lens light and the edge of the prism. According to the ultra-long-focus lens, focusing and better anti-shake shooting can be realized while miniaturization is maintained.

The invention provides a five-piece type ultra-small upright telephoto lens. The five-piece type ultra-small upright telephoto lens comprises a first lens, an aperture diaphragm, a second lens, a third lens, a fourth lens, a fifth lens and an optical filter which are sequentially arranged from an object side to an image side along an optical axis, the first lens is a positive lens, the surface facing the image is a concave surface, and the surface facing the object is a convex surface; the second lens is a negative lens, the surface facing the image is a concave surface, and the surface facing the object is a convex surface; the third lens is a negative lens, the surface facing the image is a concave surface, and the surface facing the object is a convex surface; the fourth lens is a positive lens, the surface facing the image is a convex surface, and the surface facing the object is a concave surface; the fifth lens is a negative lens, the surface facing the image is a convex surface, and the surface facing the object is a concave surface. The five-piece type design of the lens effectively corrects aberration and chromatic aberration, provides clear and sharp images, accurately captures details of distant objects, adapts to small electronic equipment such as smart phones, does not occupy too much space, and improves the long-focus shooting capability of the equipment; subminiaturization of the lens is realized, and more internal space is saved for electronic equipment.

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.

This application discloses a target tracking and shooting method, device, and storage medium, relating to the field of multi-axis gimbal camera technology and applied to a gimbal control system. The method includes: if a target tracking process is triggered, selecting a target tracking source based on priority and the confidence level of the target detection results corresponding to each tracking source, wherein the target tracking source is a mobile terminal video source, a telephoto lens video source, or a wide-angle lens video source; reading the tracking object position output by the target tracking process corresponding to the target tracking source, wherein the tracking object position is the position of the tracking object in the video frame corresponding to the target tracking source; determining the pose adjustment parameters of the multi-axis gimbal based on the tracking object position, and controlling the rotation of the multi-axis gimbal based on the pose adjustment parameters. This solves the technical problem in the prior art where the inability to effectively switch alternative sources when a single tracking source detection is unreliable leads to tracking interruption, thereby improving tracking accuracy and tracking stability.

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 discloses an infrared bi-pass periscopic telephoto lens, and belongs to the technical field of camera lenses. An infrared bi-pass periscopic telephoto lens comprises a first lens, a second lens, a third lens and a fourth lens, object side surfaces and image side surfaces of the first lens, the second lens, the third lens and the fourth lens are aspheric surfaces, the infrared bi-pass periscopic telephoto lens further comprises a diaphragm arranged in front of the first lens, the first lens has positive refractive power, and the second lens has negative refractive power. The second lens element, the third lens element, and the fourth lens element have negative refractive power. According to the invention, the four-lens type design composed of the first lens, the second lens, the third lens, the fourth lens and the diaphragm is adopted, and the surface shape structure of each lens is combined with the optimization range of optical parameters, so that the light weight of the camera by the existing electronic product is met, the price of the plastic lens is lower than that of the glass lens, and the production cost can also be reduced.

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 telephoto 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 from an object plane to an image plane along an optical axis, 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 negative focal power; the fifth lens has negative focal power; the sixth lens has positive focal power; the second lens, the third lens and the sixth lens are glass spherical lenses; the first lens, the fourth lens and the fifth lens are plastic aspheric lenses. According to the telephoto lens provided by the embodiment of the invention, the total optical length TTL is less than or equal to 14.5 mm, the focal length EFL is about 11.5 mm, the maximum image height reaches 7mm, and the telephoto lens with the total length, small size, low cost and large target surface is realized.

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.