179 results about "Wide-angle lens" patented technology

A real-time badminton action detection system, consisting of: a video recording module configured to continuously record video images at a frame rate of at least thirty frames per second; a pose estimation processing unit configured to detect and output two-dimensional skeletal landmark coordinates for a variety of body joints, including at least wrists, elbows, shoulders, hips, knees and ankles, from each video frame; a Motion Bidirectional Encoder Representation Transformer (Motion-BERT) configured to receive sequential skeleton landmark coordinates over a defined time window and encode motion trajectories using multi-head self-attention mechanisms across past and future frames; and a classification controller module operationally coupled to the Motion-BERT, wherein the classification controller module comprises a dense neural network with a softmax output layer configured to generate real-time probability distributions over a variety of badminton-specific action classes, the end-to-end system being configured to produce recognition results with a processing latency of less than 100 milliseconds; and wherein the video recording module comprises a high-speed digital camera with a wide-angle lens positioned at a point on the perimeter of the court, the camera being calibrated with intrinsic and extrinsic parameters for perspective correction, and wherein the system includes a calibration routine that aligns detected skeletal landmarks with a reference badminton court coordinate system.

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.

A target object tracking method, a camera, and a computer-readable storage medium are provided. The camera includes a telephoto lens and a wide-angle lens. The camera captures a telephoto image by the telephoto lens, and captures a wide-angle image by the wide-angle lens. When a target object is detected in the wide-angle image, a first zoom magnification of the wide-angle image and a zoom magnification of switching lenses are obtained. The wide-angle image is digitally zoomed according to the first zoom magnification if the first zoom magnification is less than or equal to the zoom magnification of switching lenses. Otherwise, if the first zoom magnification is greater than the zoom magnification of switching lenses, the telephoto image is digitally zoomed to output a tracking image of the target object when the target object is detected in the telephoto image.

The application discloses a two-axis holder, the connecting arm can rotate relative to the rotor end of the first motor to switch the holder between the storage state and the use state; the clamping part comprises a first clamping jaw and a second clamping jaw, when the holder is in the storage state, the clamping part faces the handheld part; when the holder is in the use state, the clamping part is located above the first motor, the connecting arm is inclined to the axis extension line of the first motor, so that the clamping part is located on the axis extension line of the first motor, the outer ring of the rotor end of the first motor and the connecting arm are provided with matched limiting structures to limit the relative rotation of the rotor end of the first motor and the connecting arm. The two-axis holder disclosed by the application can always balance the gravity center of the two-axis holder, a rotating mechanism is additionally arranged between the first motor and the connecting arm to meet the storage of the two-axis holder, the length after storage is only the length of the handheld part of the holder, and the problem of the motor blocking the wide-angle lens during shooting of the two-axis holder can be solved.

The embodiment of the utility model provides a wide-angle lens, a shooting device and a movable platform. The wide-angle lens comprises a first lens group with negative focal power, a reflection optical element and a second lens group with positive focal power which are sequentially arranged from an object side to an image side along an optical axis, the first lens group comprises at least two negative lenses, the second lens group comprises at least five lenses, and the wide-angle lens satisfies the following conditions: 14lt; tTL / flt; 17; 90 degree lt; omega; wherein TTL is the distance on the optical axis from the object side surface of the lens closest to the object side to the imaging surface when an infinite object is focused, f is the overall focal length of the wide-angle lens, and omega is the maximum angle of the incident light of the lens closest to the object side. According to the embodiment of the utility model, the occurrence risk of ghosting and glare can be reduced, the spherical aberration can be well corrected, the lens size miniaturization can be realized while a larger field angle is ensured, and the imaging quality can be improved.

A method of designing a wide-angle optical system having at least one free-form optical surface without rotational symmetry to create a custom 2D object-image mapping. The method is based on iteratively adjusting the shape of the at least one free-form optical 2D surface to have the desired precise 2D object-image mapping, and then adjusting the surface of the optical element to meet other desired optical specifications. The iterative method is applied until the desired 2D object-image mapping and other desired optical specifications are achieved.

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.

To simplify processing in imaging systems that use multiple wide-angle lens devices. [Solution] An imaging system comprising a first lens device and a second lens device, each having a half-angle of view exceeding 90° corresponding to the maximum image height when focused at infinity at the wide-angle end, and a first imaging device equipped with a first image sensor that receives the image formed by the first lens device, wherein the imaging areas of the first lens device and the second lens device overlap, and the first imaging device determines the imaging conditions of the first imaging device based on imaging information in the overlapping area.

The utility model provides a kind of monitoring adjustment switching device, first optical lens in first camera, second optical lens in second camera, third optical lens in third camera are all wide-angle lens, fourth optical lens in fourth camera is optical zoom lens, and the collection angle or collection mode of first optical lens, second optical lens, third optical lens, fourth optical lens is different;The lens switching control data output end of control unit is connected with the lens switching control data input end of switching unit, the image data output end of first camera, second camera, third camera, fourth camera is respectively connected with the image data input end of switching unit, the image data output end of switching unit is connected with the image data input end of control unit, can be flexibly switched between first camera, second camera, third camera, fourth camera, reduce monitoring use energy consumption cost.

[Problem] To provide a vision assistance device that does not cause misalignment between a virtual image projected onto a display surface and a real image viewed through the display surface. [Solution] A vision assistance device 100 is configured to project an image captured by a wide-angle camera device 108 onto a right display surface 106R or a left display surface 106L. When a wearer WP wears the vision assistance device 100 on the head HD and faces forward, a camera axis CCL of a wide-angle lens 172 is horizontally disposed. A camera center CC is disposed on a horizontal center line HCL and a vertical center line VCL of the left display surface 106L and the right display surface 106R. Consequently, no misalignment is produced between virtual images projected onto the left display surface 106L and the right display surface 106R and real images viewed therethrough.

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 technical field of optical imaging, and especially relates to a wide-angle lens equipped with a protection structure. The wide-angle lens equipped with the protection structure comprises a lens barrel, a lens, a gland, a sliding frame, a buffer ring and a buffer spring, the left end of the lens barrel is clamped with the lens, the left side of the outside of the lens barrel is provided with external threads distributed in the circumferential direction, the inner side face of the gland is correspondingly provided with matched circumferential internal threads, the external threads and the internal threads are connected through a thread pair, and the sliding frame is clamped with the buffer ring. A sliding frame is slidably connected to the position, close to the lens, of the left end in the lens barrel, and a plurality of buffer springs distributed in the circumferential direction are connected between the sliding frame and the lens barrel. The damping structure composed of the sliding frame, the buffer ring and the buffer spring is arranged in the lens barrel, when the lens is subjected to external impact, the buffer ring drives the sliding frame to compress the buffer spring, and the impact force is absorbed by using the elastic deformation of the spring, so that the risk of damage of the lens due to impact can be effectively reduced, and the reliability and the service life of the wide-angle lens are remarkably improved.

The utility model discloses a half-format wide-angle lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, a ninth lens, a tenth lens and an eleventh lens which are sequentially arranged from an object space to an image space, the object side surfaces and the image side surfaces of the fifth lens, the sixth lens, the seventh lens and the tenth lens are convex surfaces, the object side surfaces and the image side surfaces of the fourth lens, the eighth lens and the ninth lens are concave surfaces, the object side surfaces of the first lens, the second lens and the third lens are convex surfaces, and the image side surfaces of the first lens, the second lens and the third lens are concave surfaces. The eleventh lens element has a concave object-side surface and a convex image-side surface. According to the half-frame wide-angle lens, only 11 lenses are adopted, the effective focal length of the half-frame wide-angle lens is 12mm and the relative aperture of the half-frame wide-angle lens is 2 through the cooperation and mutual cooperation of the 11 lenses, and the cost is reduced under the condition that an ultra-large wide angle and better imaging quality are ensured.

The utility model discloses a kind of miniature wide-angle lenses, it includes first lens, second lens, third lens, fourth lens, fifth lens, sixth lens and seventh lens sequentially distributed from object side to image side along optical axis, wherein: first lens is the convex-concave lens with negative optical power, wherein, the first surface of first lens close to object side is convex, and the second surface close to image side is concave;Second lens is the double convex lens with positive optical power;Third lens is the double concave lens with negative optical power;Fourth lens is the convex-concave lens with positive optical power;Fifth lens is the double convex lens with positive optical power;Sixth lens is the convex-concave lens with positive optical power;Seventh lens is the flat lens with positive optical power.In the utility model, the optical structure of seven glass lenses is used in the miniature wide-angle lens, to reduce the overall volume of miniature wide-angle lens.

An optical system of the wide-angle lens is composed of a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens, the first lens is a meniscus concave negative lens, the second lens is a meniscus concave negative lens, the third lens is a biconvex positive lens, and the sixth lens is a biconvex positive lens. The fourth lens is a biconvex positive lens, the fifth lens is a meniscus concave negative lens, the sixth lens is a biconvex positive lens, the fourth lens and the fifth lens form a bonding lens, the first lens and the third lens are glass spherical lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are all plastic aspheric lenses. The two glass spherical lenses are matched with the four plastic aspheric lenses for use, compared with an all-glass system, the system mass is lighter, compared with an all-plastic system, the optical performance stability is higher, and meanwhile the cost is reduced while the system adapts to the environment; and the imaging angle of an object is greater than 130 degrees.

An optical lens (10), a camera module (200) and an electronic device (1000). The optical lens (10) comprises a first lens group (G1), a second lens group (G2) and a third lens group (G3) which are arranged from an object side to an image side. The first lens group (G1) comprises at least one lens having a negative focal power. The second lens group (G2) comprises at least two lenses, and at least one lens of the second lens group (G2) has a negative focal power. The third lens group (G3) comprises at least one lens having a negative focal power. The first lens group (G1) and / or the second lens group (G2) are / is a zoom lens group. The optical lens (10) satisfies 0.1 ≤ fw / ImgH ≤ 1.1, where fw is the focal length of the optical lens (10) at a wide-angle end, and ImgH is half of a diagonal length of an effective pixel area on an imaging surface of the optical lens (10). The optical lens (10) can realize integration of a main camera lens and a wide-angle lens, and has a good imaging quality at both a main camera end and the wide-angle end.

A stovetop camera application device is disclosed, which is a stovetop Wi-Fi enabled camera system and corresponding software application. The stovetop camera application device comprises a heat-resistant camera component with a wide-angle lens that operates in a normal image mode or a heat camera mode. The camera component is installed above a stovetop hood or is wall mounted via magnets and angled brackets. The camera component includes sensors to detect methane gas or smoke. The corresponding software application has customizable features, such as alarms for flame detection, steam alerts, boiling notifications, and timers to enhance functionality and safety.

The invention discloses a wide-angle lens for a motion camera, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens from an object side to an image side along an optical axis, and is characterized in that the first lens has negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the fourth lens has positive focal power, the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive focal power, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; the seventh lens has positive focal power, the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a convex surface; the eighth lens has negative focal power, the object side face of the eighth lens is a concave face, and the image side face of the eighth lens is a concave face. The wide-angle lens is used for solving at least one problem that a motion camera is too long in total length, too heavy in weight, high in cost, too small in aperture, too small in target surface, too small in field angle, large in field edge resolution, too fast in illumination reduction and the like.

The utility model discloses an adjustable light-emitting diode (LED) fish gathering lamp with a wide-angle lighting and forced air cooling structure, which comprises a lamp body shell, a lamp arranged in the lamp body shell, a heat dissipation fan, a wide-angle lens arranged at the bottom of the lamp body shell and used for increasing the lighting range, and a light diffusion plate arranged at the bottom of the lamp body shell. A heat dissipation air channel used for enhancing the heat dissipation effect is arranged in the lamp body shell, an adjustable installation part is arranged on one side of the lamp body shell, the illumination intensity and the illumination range are optimized, 165-degree wide-angle illumination is adopted to cover a fishing boat operation area, and the illumination uniformity is greatly improved. And a heat dissipation air channel is optimized, and forced air cooling is adopted, so that the junction temperature of the LED is greatly reduced, and light attenuation is delayed. The fishing boat has the functions of being adjustable in installation and convenient to adjust, adjustment at any time in daily use is facilitated, and various installation modes of the installation part are suitable for various fishing boat scenes.

Fixed focal length, wide angle lens that maintains its effective focal length and imaging quality with change in temperature. First through tenth lenses over three lens groups collaborate to create a fixed effective focal length that fluctuates less than one micron over the temperature range due to thermal stabilization of the lens system.

Anamorphic wide-image lens, characterized in that it comprises, along the light path from the object side to the image side, a first cylindrical lens group (G1), a first spherical lens group (G2), a second spherical lens group (G3), a second cylindrical lens group (G4), a third cylindrical lens group (G5) and a third spherical lens group (G6) in succession; wherein the first cylindrical lens group (G1) has a negative optical focal length, wherein the first spherical lens group (G2) has a positive optical focal length, wherein the second spherical lens group (G3) has a negative optical focal length, wherein the second cylindrical lens group (G4) has a positive optical focal length, wherein the third cylindrical lens group (G5) has a positive optical focal length, wherein the third spherical lens group (G6) has a positive optical focal length; where the total focal length of all lens groups satisfies the following equation: 1.2 < f ( G 1 − G 6 ) X / f ( G 1 − G 6 ) Y < 1.8 ; − 0.9 < f ( G 5 ) X / f ( G 1 ) Y < − 0.3 ; 2.2 < f ( G 5 ) X / f ( G 4 ) Y < 3.2 ; − 5 < f ( G 1 ) Y / f ( G 4 ) Y < − 3 ; 0 < f ( G 2 ) / f ( G 6 ) Y < 0.5 ; − 1.5 < f ( G 2 ) / f ( G 3 ) < − 1 ; − 0.2 < f ( G 3 ) / f ( G 6 ) < − 0.1 ; wherein the curvature directions of the first cylindrical lens group (G1) and the second cylindrical lens group (G4) are the Y direction, with the X direction being perpendicular to the Y direction;where f(G1-G6)X denotes the overall optical focal length from the first cylindrical lens group (G1) to the third spherical lens group (G6) in the X direction, where f(G1-G6)Y denotes the overall optical focal length from the first cylindrical lens group (G1) to the third spherical lens group (G6) in the Y direction, where f(G5)X denotes the overall optical focal length of the third cylindrical lens group (G5) in the X direction, where f(G1)Y denotes the overall optical focal length from the first cylindrical lens group (G1) in the Y direction, where f(G4)Y denotes the overall optical focal length of the second cylindrical lens group (G4) in the Y direction, where f(G2) denotes the overall optical focal length of the first spherical lens group (G2), where f(G3) denotes the overall optical focal length of the second spherical lens group (G3), and where f(G6) denotes the overall optical focal length of the third spherical lens group (G6) is designated.;

The invention provides a projection device, a wide-angle lens thereof and a wide-angle projection method. The wide-angle lens is provided with a collimating lens group, a diffractive optical element and an adjusting lens group. Wherein the collimating lens group, the diffractive optical element and the adjusting lens group are sequentially arranged from the first side of the wide-angle lens to the second side of the wide-angle lens. Therefore, when output light with a large-angle projection range is provided, the overall optical distortion can be controlled within an effective specification.

The utility model discloses an ultra-wide-angle lens optical system, which belongs to a lens in the technical field of optical lenses, and adopts the technical scheme that the ultra-wide-angle lens optical system 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; the first lens is a negative lens, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens is a positive lens, the object side surface of the second lens is a convex surface, and the image side surface is a convex surface; the third lens is a positive lens, the object side surface of the third lens is a convex surface, and the image side surface is a convex surface; the fourth lens is a negative lens, the object side surface is a concave surface, and the image side surface is a convex surface; the first lens, the second lens and the third lens are sequentially arranged at intervals, and the third lens is tightly attached to the fourth lens; according to the ultra-wide-angle lens optical system provided by the utility model, the ultra-wide angle, the large view field and the excellent imaging quality are realized with the fewest lenses and the simplest structure.

The invention relates to the technical field of optical lenses, in particular to an athermalized ultra-wide-angle lens, which comprises a lens barrel, and a first lens group, a diaphragm and a second lens group which are coaxially arranged in the lens barrel in sequence, from the object side to the image side, the first lens group comprises a first lens, a second lens, a third lens and a fourth lens which are arranged in sequence, and the second lens group comprises a fifth lens, a sixth lens and a seventh lens which are arranged in sequence. Wherein the first lens is a fisheye-type meniscus negative lens, and the concave surface of the first lens faces the image space; the second lens and the third lens are meniscus negative lenses, and the concave surfaces of the second lens and the third lens face the image space. The fourth lens is a positive lens; the fifth lens, the sixth lens and the seventh lens are all positive lenses. The field angle of the lens provided by the invention reaches 185 degrees, and all objects right ahead can be shot comprehensively without dead angles; the aperture value can reach 1.4, and rapid imaging can be realized; and the lens can adapt to an environment with a temperature range of-40 DEG C to 80 DEG C, and covers most of outdoor temperature environments, so that the adaptability of the lens to the environment is effectively improved.

A wide-angle lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens is with negative refractive power and includes a concave surface facing an image side. The second lens is with refractive power. The third lens is with refractive power. The fourth lens is with positive refractive power and includes a convex surface facing the image side. The fifth lens is with positive refractive power. The sixth lens is with refractive power. The seventh lens is with refractive power. The eighth lens is with positive refractive power and includes a convex surface facing an object side. The first, second, third, fourth, fifth, sixth, seventh, and eighth lenses are arranged in order from the object side to the image side along an optical axis.

The high-definition monitoring camera device comprises a mounting rack and a camera connected to the mounting rack, one end of the mounting rack is connected with a mounting hole, the lower end of the mounting rack is rotatably connected with a monitoring ball far away from the mounting hole, and the camera is mounted at the lower end of the monitoring ball; a connecting plate is arranged at the lower end of the monitoring ball in an outward protruding mode, the camera is rotationally connected with the connecting plate, and a wide-angle lens is further connected into the monitoring ball. The monitoring ball is connected with a first auxiliary imaging assembly in cooperation with the wide-angle lens, and the camera is further connected with a second auxiliary imaging assembly around the lens of the camera. Compared with the prior art, the high-definition monitoring camera device provided by the utility model has the advantages of convenience in application and good monitoring effect.

A wide-angle lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens has refractive power. The second lens has refractive power and comprises a convex surface facing an object side. The third lens has positive refractive power. The fourth lens has refractive power and comprises a convex surface facing the object side. The fifth lens has positive refractive power and comprises a convex surface facing the object side. The sixth lens has refractive power and comprises a concave surface facing an image side. The first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are sequentially arranged from the object side to the image side along an optical axis.

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.

This application provides an ultra-wide-angle lens and an electronic device. The ultra-wide-angle lens includes a first lens, a second lens, a third lens, and a fourth lens arranged sequentially from the object side to the image side along the optical path; the first lens is a positive refractive power lens; the second lens is a negative refractive power lens; the third lens is a positive refractive power lens; and the fourth lens is a negative refractive power lens. The four lenses, through adjustments to their respective structural parameters and / or optical parameters, enable the lens to satisfy the following conditional relationships: TTL ≤ 2.9 mm; FOV ≥ 108°; where TTL is the total optical length; and FOV is the field of view.