30 results about "Central field" patented technology

The invention provides a query configuration method and system, and the method comprises the steps: carrying out the personalized processing of a basic query configuration template based on the context information of a first user, and obtaining a target query configuration template; analyzing the target query configuration template into an executable structure through a strategic rendering engine, and driving a front-end component to render and generate a target query interface according to the executable structure; in response to a query request initiated by the first user on the target query interface, assembling query parameters of a uniform structure and initiating the query request to a target service; and receiving a query result returned by the target service, normalizing the query result according to a result mapping rule of the basic query configuration template, and rendering and displaying the query result on the target query interface. Large-scale multiplexing and refined management and control of configuration are realized through separate design of a configuration warehouse and a central field library, and personalized processing of query configuration is realized by combining static context and dynamic context.

This invention relates to the field of vehicle design technology and discloses a method and apparatus for determining the display area of ​​a combination instrument cluster. The method includes: acquiring first simulated data of the steering wheel, second simulated data of the user's eye ellipse, and third simulated data of the combination instrument cluster display surface; determining a central field of view region based on the first simulated data, the third simulated data, and simulated data of the central eye point; translating the central field of view region based on the simulated data of the central eye point, at least one simulated data of an extreme eye point, and the third simulated data to obtain at least one extreme field of view region corresponding to each of the at least one extreme eye point simulated data; and determining the display area of ​​the combination instrument cluster based on the central field of view region and the at least one extreme field of view region. Applying the technical solution of this invention can meet the vision requirements of users of different body types, making the design position of the combination instrument cluster universally applicable.

The application provides a design method of a high-uniformity Bitter coil, belongs to the field of Bitter coils, and calculates the maximum electromagnetic stress of a first Bitter coil; the thickness of a Bitter sheet is gradually increased according to a set increment on the basis of the thickness of the Bitter sheet to obtain the thickness of the Bitter sheet, a second Bitter coil is obtained, the turns of the coil in the central region of the first Bitter coil are replaced by the turns of the second Bitter coil, a new coil is obtained, the number of turns is gradually increased by 1 turn as a step from 1 turn, and the number of turns of the coil with a magnetic field uniformity less than a set value and a coil height less than a set height is obtained; the central field of the coil is calculated, and the number of turns with the highest central field is selected; and the application also provides the Bitter coil; and the workload of processing the annular conductive pad is saved.

The utility model relates to an optical lens with high efficiency and high central field-of-view image resolution and a light-emitting assembly. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens and an image surface which are arranged in sequence, the surfaces of the first lens, the second lens and the third lens are aspheric surfaces, and the Abbe coefficient of the second lens is lower than that of the other three lenses; the first surface and the second surface of the second lens are bent towards one side far away from the image surface; the vignetting diaphragm is arranged on the first surface, far away from the image surface, of the fourth lens; and the aperture diaphragm is arranged on the first surface or the second surface of the first lens, and the distance between the aperture diaphragm and the vignetting diaphragm is 23-50 mm. The lighting efficiency is high; the surfaces of the first lens, the second lens and the third lens are aspheric surfaces, so that the transverse chromatic aberration is optimized, and the abbe coefficients of the other three lenses are higher than that of the second lens, so that the overall transverse chromatic aberration is reduced; by setting the distance between the aperture diaphragm and the vignetting diaphragm, the imaging quality of the central view field can be improved.

The invention discloses a laser communication rapid capturing method, device and equipment and a storage medium, and relates to the technical field of satellite laser communication, and the method comprises the steps: obtaining ground station geographic information, satellite attitude information and satellite orbit information; correcting and compensating a ground offset vector of a target ground station relative to an imaging center point based on the ground station geographic information, the satellite attitude information and the satellite orbit information, and determining a space pointing vector; based on the space pointing vector, mapping an angular offset of a target ground station in a corresponding target coordinate system relative to a camera center view field axis into an initial aiming pointing instruction; and driving an optical axis of the laser communication terminal to directly point to a corresponding initial aiming position according to the initial aiming pointing instruction, so that the laser communication terminal captures beacon light emitted by a ground station by taking the initial aiming position as a center.

The present disclosure provides a system for optical detection of an eye, comprising: a light emitting assembly configured to form an incident light ray array comprising a plurality of incident light rays parallel to a chief ray; a half mirror configured to reflect the incident light ray array at an angle to an optical axis of the system for forming a plurality of chief rays parallel to the optical axis of the system; a first objective lens having an optical axis coinciding with the optical axis of the system for converging the plurality of chief rays formed via the half mirror reflection onto a pupil plane of a measured eye so as to form a spot array on a retina of the measured eye; and a photodetector configured to acquire a spot array image corresponding to the spot array for detecting optical performance of the retina of the measured eye. The present disclosure can simultaneously measure optical imaging quality of a central field of view of the retina along an optical axis direction and optical imaging quality of a peripheral field of view of the retina to achieve fast detection of optical quality of the eye for a wide field of view on and off the optical axis.

The invention provides a common-light-path imaging optical system and method based on visible light and infrared light, and belongs to the technical field of optical imagines.The system comprises a common-light-path receiving device, a light splitting light path, an infrared detection light path and a visible light detection light path, the light splitting light path is arranged at the light output end of the common-light-path receiving device, and the infrared detection light path is arranged at the light output end of the visible light detection light path; and the infrared detection light path and the visible light detection light path are respectively connected with the light output end of the light splitting light path. A visible light and infrared light common-path design is adopted, a common lens enables dual-band light to be transmitted along the same light path, imaging differences of a central view field, image height, geometric distortion and the like caused by different parameters of an optical axis, a focal length and the like of a traditional dual-light-path system are fundamentally eliminated, and the consistency of dual-band imaging targets is ensured. And the small focal length and large aperture design is realized through simulation matching of the lenses with different materials and curvatures, the field angle of the optical system reaches + / -30 degrees, a larger and wider irradiation and imaging range can be realized under the same optical path, and the application requirement of large-field imaging is met.

This disclosure pertains to the field of optical devices, specifically relating to eyeglasses, comprising: a frame including a track extending in a predetermined direction; a first stimulation module slidably connected to the track for sliding along the track; the first stimulation module having a first defocus stimulation region; and a second stimulation module slidably connected to the track for sliding along the track; the second stimulation module having a second defocus stimulation region. When the first and second stimulation modules are installed in the same side of the frame, a blank area is formed between the first and second defocus stimulation regions. The first and second stimulation regions correspond to the peripheral field of vision of the human eye, and the blank area corresponds to the central field of vision of the human eye. By sliding the first and second stimulation modules on the track, the positions of the first and second defocus stimulation regions in the field of vision of the human eye are changed, thereby changing the position and extent of the blank area. This is intended to inhibit axial elongation and control the degree of myopia.

The invention provides an optical lens group for improving the resolutions of a central view field and a surrounding view field. The optical lens group is composed of a first lens, a second lens, a third lens, an aperture, a fourth lens, a fifth lens and a sixth lens in sequence from an object side to an image side, the optical lens group satisfies the following conditional expressions: 0.6 lt; aT12 / AT34lt, AT12 / AT34lt; 3.8); wherein AT12 is an air interval between the first lens and the second lens, and AT34 is an air interval between the third lens and the fourth lens; -1.4 lt,-1.4 lt; f5 / EFLlt; 5.7, 5.7; wherein f5 is the focal length of the fifth lens, and EFL is the effective focal length of the optical lens group; -1.7 lt,-1.7 lt; r10 / f5lt; 1.8); wherein R10 is the curvature radius of the image side surface of the fifth lens. Therefore, the resolution of the central field of view and the surrounding field of view can be improved, the refractive power of the lens can be adjusted to correct aberration, and correction of high-order aberration and astigmatism can be facilitated.

The utility model relates to the technical field of large-breadth infrared telecentric lens scanning, and discloses a large-breadth flange type telecentric field lens, and the main body of the field lens comprises a lens barrel and five lenses which are sequentially arranged along the light beam propagation direction. The first lens is of a biconcave structure, and the focal length is negative. The second lens is of a meniscus structure, and the focal length is positive. The third lens is meniscus-shaped, and the focal length is positive; the fourth lens is in a large-aperture plano-convex shape, and the focal length is positive; the fifth lens is a protective window lens and is in a large-aperture biplane shape, and the focal length of the fifth lens is infinite. And each lens is fixed in the lens cone through a threaded pressing ring. The focal length of the field lens main body is F420, the processing breadth is 200 * 200 mm, the central field angle is less than 0.5 degree, and the edge field angle is less than 3 degrees. Through reasonable optical design, combination of long focal length and large breadth processing is realized, the problems that an existing field lens is short in applicable focal length range and can only be used for small breadth processing are solved, and applicability and flexibility of the field lens in an industrial processing scene are effectively improved.

The utility model discloses a laser transmit-receive system of a laser radar and the laser radar thereof, and the system comprises a rotating mirror which rotates around a rotating shaft; the emission unit array emits M emission light beams and emits the M emission light beams to the environment through the first mirror surface of the rotating mirror, the emission unit array comprises N emission unit sub-arrays, and the N emission unit sub-arrays are arranged in the extension direction of the rotating shaft; the N groups of transmitting lenses are in one-to-one correspondence with the N transmitting unit sub-arrays, and the N groups of transmitting lenses are arranged along the extension direction of the rotating shaft; the receiving lens is used for receiving M echo light beams of the M emission light beams through the second mirror surface of the rotating mirror; and the receiving unit array is arranged corresponding to the transmitting unit array and is used for receiving the M echo light beams. According to the utility model, aberration can be improved, the size of a laser transmit-receive system is compressed, the adjustment efficiency of transmit-receive laser signal alignment is improved, and the heat dissipation efficiency is improved. The resolution ratio of the central field of view of the laser radar is doubled by means of the arrangement of the photoelectric detection array.

To provide an optical system with high light utilization efficiency. [Solution] The optical system includes a projection unit (120) that projects light from a display element (190) to form a first pupil (130), and a light guide element (110) that guides light from the projection unit to the eye point. The light guide element has a reflecting unit (150) that forms a second pupil (171) at the eye point. The reflecting unit comprises a plurality of pairs of reflecting surfaces (210), each consisting of a first and a second reflecting surface. In a first cross-section including the normals of the first and second reflecting surfaces, when the angle between the light incident on the first reflecting surface and the second reflecting surface is α(°), and the angle between the light reflected by the second reflecting surface and the first reflecting surface is β(°), with respect to the principal ray of the central field of view, 0 ≤ |α| ≤ 20 0 ≤ |β| ≤ 20 The conditions are met.

The utility model provides an irrigation drainage channel suitable for a high-standard farmland in a hilly area. The irrigation drainage channel comprises a channel bottom, channel surfaces on two sides of the channel bottom and a channel top on the top of the channel surfaces, the channel bottom is a cast-in-place concrete bottom plate, the channel surfaces are composed of multiple layers of prefabricated concrete bricks, the channel top is a prefabricated concrete brick coping, and the prefabricated concrete bricks are arranged on two sides of the cast-in-place concrete bottom plate along side slopes; a middle field ridge is arranged on the side of the irrigation drainage channel, at least one drainage opening is formed in the channel surface of the irrigation drainage channel and located at the upstream of the middle field ridge, and at least one irrigation opening is formed in the channel surface of the irrigation drainage channel and located at the downstream of the middle field ridge; a side ditch is arranged on the outer side of the water pipe of the irrigation opening, and a stilling pool is arranged at the bottom of the side ditch. The channel structure combining the prefabricated concrete bricks and the concrete cast-in-place bottom plate is adopted, the construction technology is optimized, the construction period is shortened, the construction cost is low, the roughness of a water passing section is low, the water conveying and drainage effects are obvious, and good irrigation benefits are achieved; the stilling pool is arranged to prevent water from scouring the outer slope of the field ridge and the downstream field during irrigation.

The application discloses a kind of spaceborne sensor optical imaging simulation method, device, equipment and medium to space target, method includes: constructing field of view model, the visibility screening is carried out to the star and all space targets detected in field of view model, along with the direction of observation satellite central field of view, establish reference plane, field of view model is transferred to reference plane;All visible stars and space target J2000 position is converted to reference plane;According to the star value of space target and star, the equivalent pixel point size and brightness are calculated, and simulation image is drawn.The application is processed by adopting field of view model construction and visibility analysis, the visibility judgment of super large scale star and space target is handled, and the calculation speed is improved, the calculation efficiency is greatly improved, effectively supports the real-time demand of large-scale space situation simulation system.

The application relates to the technical field of optical lenses, in particular to an optical lens for a video displacement meter, which comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, a sixth lens and a seventh lens arranged in sequence along the light incidence direction, that is, a six-group seven-piece structure is adopted to meet the use requirements. The central field MTF value of the optical system is greater than 0.2 at 250 lp / mm, the edge field MTF value is greater than 0.2 at 200 lp / mm, the Fno is 2.6, the relative luminance is greater than 50%, the total optical length is less than 15 mm, the use object distance is short, is 20 mm, the horizontal object height is 35 mm, the optical distortion is 15%, and the optical lens is suitable for a 1 / 2.7 chip used by the video displacement meter.

An imaging optical system lens, an image capturing device and an electronic device are disclosed. The imaging optical system lens includes six lenses. The six lenses are sequentially arranged from an object side to an image side of an optical path as a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. Each lens has an object side surface facing the object side and an image side surface facing the image side. The first lens has negative refractive power. The object side surface of the first lens is concave near an optical axis. The image side surface of the first lens is convex near the optical axis. The second lens has positive refractive power. The object side surface of the second lens is convex near the optical axis. The image side surface of the second lens is concave near the optical axis. The fifth lens has positive refractive power. When certain conditions are met, the spherical aberration of the central field of view can be reduced.

This invention discloses a device and method for calibrating the focal plane assembly position of an off-axis reflective collimator, solving the problem that existing technologies cannot achieve accurate calibration of the focal plane position of an off-axis reflective collimator. The calibration device includes an autocollimation component, an angle measuring component, a translation stage calibration component, and a digital microscopy system. The autocollimation component and the angle measuring component work together to calibrate the actual central field of view of the off-axis reflective collimator; the translation stage calibration component is used to calibrate the movement direction of the translation stage; the autocollimation component, the angle measuring component, and the digital microscopy system work together to calibrate the position of the target plate, ensuring that it is parallel to the focal plane of the off-axis reflective collimator and that its center coincides with the actual central field of view of the off-axis reflective collimator. This calibration device can quickly and optimally adjust the principal ray direction of the central field of view of the off-axis reflective collimator and the relative position between the focal plane and the target plate and translation stage, thereby improving calibration accuracy.

This invention provides a design method for a magnetic resonance double-loop resonant self-decoupling coil based on multi-objective optimization, comprising the following steps: Step 1, constructing a physical model of the magnetic resonance double-loop resonant self-decoupling coil; Step 2, establishing an electromagnetic model based on coupled-mode theory to solve for the system's characteristic modes; Step 3, determining the solution method for complex current distribution; Step 4, determining the spatial magnetic field distribution index; Step 5, constructing a multi-objective optimization function, including: a field strength gain term, aiming to maximize the central field strength; and a uniformity penalty term, calculating the difference ratio between the central field and the edge field; Step 6, setting physical constraints; and Step 7, performing nonlinear global optimization.

The invention discloses a sampling-matched full-aperture long-distance Fourier laminated imaging device and a sampling-matched full-aperture long-distance Fourier laminated imaging method, and belongs to the technical field of Fourier laminated imaging. The device comprises a laser light source, a spatial filtering device, a focusing lens, a two-dimensional electric control translation stage, a camera assembly and a sample stage, and an aperture diaphragm of a camera is set to be the maximum aperture of the system and is matched with sampling parameters of a CCD detector; the method comprises the steps of low-resolution intensity image acquisition, image preprocessing and iterative phase restoration and reconstruction: acquiring low-resolution images at different positions, after registration and interpolation preprocessing, restoring a high-resolution frequency spectrum through an iterative process of sub-aperture frequency spectrum interception, amplitude replacement and frequency spectrum updating by taking the frequency spectrum of a central field-of-view image as an initial value, and performing phase restoration and reconstruction on the high-resolution frequency spectrum. And finally obtaining a high-resolution complex amplitude image of the sample. The system imaging capability is fully utilized, frequency spectrum aliasing is avoided, high-resolution imaging of a far-field diffuse reflection target is achieved, the resolution is improved by 2.5 times, and the method can be applied to scenes such as remote sensing and long-distance imaging.

The present application relates to the technical field of optical fiber design, and particularly relates to an optical fiber arrangement optimization method, device, equipment and storage medium, the method corrects the offset angle by correcting the optical cone parameter to correct the angle of each optical fiber, can realize the accurate matching of the optical fiber array and the optical cone distribution of each point of the image plane, makes a single optical fiber capture the echo signal of a specific field of view, without relying on the increase of the number of detectors to expand the field of view range, thereby ensuring the wide field of view detection capability while significantly reducing the size of the detector array; in addition, by differentiating the correction of each optical fiber, the field curvature and distortion of the optical system can be systematically compensated, ensuring that the edge field of view fiber coupling efficiency is maintained at a high level of the central field of view; at the same time, the fusion correction mechanism of the software simulation data and the measured data can effectively reduce the alignment deviation of the optical fiber central axis and the optical cone center, greatly improve the optical fiber coupling efficiency and reduce the optical energy loss, and then improve the detection signal-to-noise ratio of the weak echo signal.

This application provides an optical system and a lidar. The optical system includes: a light source comprising multiple light-emitting units; a microlens assembly comprising at least one microlens array, wherein the microlenses in the microlens array correspond to the light-emitting units, and the light-emitting units are located at the focal points of the microlenses; a microprism assembly comprising a light-transmitting substrate and a microprism array formed on the light-transmitting substrate, wherein the microprism array faces the microlens array, and the microprisms in the microprism array correspond to the microlenses in the microlens array; and an aperture stop, wherein light emitted by the light-emitting units is collimated by the microlenses and then incident on the microprisms, and exits from the aperture stop after being refracted by the microprisms. This optical system enables light spots at the edge of the field of view to have almost the same quality as the light spots in the central field of view, thereby improving the point cloud quality of the edge field of view.

To provide a small light guide element capable of reducing ghosting. [Solution] The light guide element (12) has an magnifying section (121) that magnifies incident light from the projection section (11) and a light guide section (122) that guides the light magnified by the magnifying section to the eye point. The magnifying section has first and second reflecting sections (1211, 1212), each of the first and second reflecting sections having multiple reflecting surfaces. In a first cross-section including the first and second reflecting sections, the first and second reflecting sections are at angles of different signs with respect to a first axis corresponding to the principal ray in the central field of view of the incident light. In each of the first and second reflecting sections, the reflecting surface closest to the light guide section among the multiple reflecting surfaces is a partial reflecting surface, and light that has been reflected multiple times by at least one of the first and second reflecting sections reaches the light guide section.

The application provides a lens group, an optical system, a head-mounted display device and a display system. The lens group of the application can be applied to image image light. An image source is arranged on the light inlet side of the lens group, and a human eye is located on the light outlet side of the lens group. Image light emitted by the image source is incident on the human eye for imaging after being shaped by the lens group. The first aspheric surface part of the first lens can meet the high resolution requirement of the human eye for the central field of view. The annular convex parts around the first aspheric surface part in sequence can be equivalent to a Fresnel lens. The first array annular convex part can collect a larger range of image light, that is, a larger range of image light can be collected and focused by the first array annular convex part, and the thickness of the lens is ensured to be not too thick. The lens group of the application can focus the central field of view without losing the resolution of the central field of view, and can collect image light of a larger range of edge fields of view outside the central field of view.

The application discloses a closed-loop ultrasonic synergic device, a coal chemical industry wastewater treatment system and method, which comprises a discharge device and a vibration device; the vibration device comprises a vibration generator and a vibration rod; the vibration rod is connected with the vibration generator, and a vibration ring is arranged on the vibration rod; the discharge device comprises an electromagnetic pulser and a discharge electrode; the discharge electrode penetrates through the center of the vibration ring, and the central axis of the discharge electrode coincides with the central axis of the vibration ring. Ultrasonic waves can generate vibration and cavitation effect, and generate heat energy inside pollutant particles, so that a part of pollutants can be directly removed. The closed-loop structure of the vibration ring can make vibration waves superimposed in the central field, and the superimposed ultrasonic vibration waves can make molecular-level organic matters in water and water molecules collide fiercely, so that solvent effect and ionization phenomenon occur; at this time, the discharge device in the central field can directly decompose ionized substances in the central field, so that the water quality is purified.

An induction coil structure has a bobbin and at least one coil wound thereon using insulated wire. The winding density (or number of turns) of the wire is greater at both axial ends of the bobbin than in its axial middle region. This concentrates conductive material where the magnetic field is strongest (near the poles), reducing material usage and weight in the weaker central field, thereby achieving a lighter structure with lower power consumption and reduced thermal loss. A solenoid pump, a solenoid valve, and a solenoid fluid pump incorporating this improved coil structure are also disclosed.

The utility model discloses an optical system of an optical anti-shake telescope. An objective lens group, a prism group and an eyepiece group are sequentially arranged from an object side to an image side along the direction of an optical axis. Wherein the objective lens group comprises a first objective lens, a second objective lens, a third objective lens, a focusing lens and an anti-shake lens; the prism group comprises a half pentaprism and a roof prism; the eyepiece group comprises a first eyepiece lens, a second eyepiece lens, a third eyepiece lens, a fourth eyepiece lens and a fifth eyepiece lens; target focusing at different distances is achieved by adjusting the focusing lens, when the anti-shake function is started, the anti-shake lens still stabilizes a target which is originally located in the center of a view field at the center of the view field according to sensing of the gyroscope, and by reasonably distributing focal power and aberration of all the lenses, the anti-shake function is achieved. The anti-shake lens compensates picture shake caused by telescope shake through translation, so that an observer can quickly and stably observe, and the observation quality is improved.

Visual effects presented in at least an ultra-far peripheral horizontal static field of the eyes of a user improve or enhance brain function, homeostasis and performance. The visual effects are non-contextual with respect to content appearing in a central field of vision, and do not constitute a cursor, a user input field or other user interface element. The ultra-far peripheral horizontal static field extends rearwardly from a fovea centralis of the eye in a straight ahead static gaze direction to 100 degrees or more rearwardly from the fovea centralis. Such can be used to treat or improve: traumatic brain injury; acuity, focus, visual convergence, visual sustainability, visual processing, visual field, retinal health, brain field health, visual discrimination, visual spatial memory, ocular motility, pursuits and saccades, hold fixation, convergence / divergence, eye alignment, depth perception, Phorias, occipital cortex, blink rate, pain, migraine headaches, and / or balance of the user or human subject.

This invention provides a plan-field superapochromatic microscope objective with a long working distance. From the image side to the object side, along the optical axis, a first, second, third, and fourth optical element and an optical window are arranged sequentially. The first optical element is a lens group with positive optical power; the second optical element is a cemented meniscus lens or a biconcave lens with negative optical power; the third optical element is a biconvex lens with positive optical power; and the fourth optical element includes 1 to 3 cemented meniscus lenses with positive optical power. The optical window is a thick glass plate with two parallel surfaces. The working distance of this microscope objective can reach 15 mm (including the thickness of the observation window). The microscope objective designed in this invention provides good chromatic aberration correction in the wavelength range of 450 nm to 1100 nm and achieves diffraction-limited resolution within a central field of view of φ < 0.2 mm. It can be widely used for observing microscopic samples at the micrometer scale in extreme environments.

A method of image rendering, a device and a storage medium are provided. The method includes: by a render server, receiving texture content of a 2D application sent by a 2D composite display server; determining an overlapping area between a panel of the 2D application and a central field of view of a user; acquiring an image magnification of the overlapping area, where the image magnification is greater than 1; performing image super-resolution processing on texture content in the overlapping area by using an image super-resolution algorithm, according to the image magnification, to obtain a super-resolution image corresponding to the texture content in the overlapping area; and rendering the panel of the 2D application into XR space according to the super-resolution image.

A star sensor optical system comprises a plurality of lenses. A focal length of the star sensor optical system gradually decreases from a central field of view to a peripheral field of view.