138results about How to "Good imaging effect" patented technology

The invention discloses an infrared camera lens based on temperature change compensation and a compensation method. When a temperature change exceeds a certain limit, a mathematical function of the relation between the focus lens group compensation capacity and the temperature difference is called to adjust the position of a focus lens group, the implementation is very simple, and an optimum imaging effect still can be effectively guaranteed to be realized after the temperature changes.

The invention discloses a bracket for a camera die set and the camera die set. The bracket comprises a bracket body; the bracket body comprises a first surface and a second surface which are oppositely arranged; a first concave groove and an annular boss are arranged on the first surface, wherein the annular boss is arranged around the outer side of the first concave groove; a second concave groove is formed in the second surface; through holes which pass through the first concave groove and the second concave groove are formed in the bracket body. According to the bracket for the camera die set, when a lens driving assembly is adhered on the part of the first surface, positioned at the outer side of the annular boss through an adhesive, excessive adhesive is difficult to flow to the first concave groove and a lens, so that the adhering firmness of the bracket and the lens driving assembly can be ensured, the adhesive can be prevented from adhering to a light filter and glass, and as a result, the light filtering performance of the light filter and the light transmission performance of the glass can be ensured, and the good imaging effect of the camera die set can be ensured; in addition, the lens is difficult to be adhered and fixed through excessive adhesive, and the focus of the lens can be normally adjusted.

The invention relates to a stressed liquid crystal transparent projection screen which is composed of two transparent substrates (such as glass or acrylic or film) and a polymer dispersion liquid crystal layer between the two transparent substrates. The polymer dispersion liquid crystal layer is prepared from an ultraviolet light cured pre-polymer, a nematic phase liquid crystal material and gasket material plastic micro-spheres, wherein the ultraviolet light cured pre-polymer is composed of a polymerizable monomer, a chain transfer agent and a photo-initiator; and the mass ratio of the pre-polymer to the nematic phase liquid crystal is 1:1. The production method of the stressed liquid crystal transparent projection screen is an ultraviolet light curing process; ultraviolet lights are used for obliquely irradiating and a polymer is directionally polymerized; and stress is timely applied to directionally arraying and fixing liquid crystal molecules, so that the product has a more transparent appearance. The stressed liquid crystal transparent projection screen prepared by the invention has the advantage of clear projection imaging; glass products are suitable for solid transparent projection screens such as window showcases and the like; acrylic products are suitable for movable or suspended transparent projection screens such as exhibitions, theatre stages, karaoke and the like; and film products are suitable for portable type transparent projection screens and the application range of the film products is wider after the film products are matched with a mini-type projector (liquid crystal on silicon LCOS). According to the stressed liquid crystal transparent projection screen provided by the invention, audiences not only can see projected images but also can clearly see backstage scenes across the screen, so that the stressed liquid crystal transparent projection screen has a magic effect of suspending objects in the air.

The invention is a prestack depth migration method for seismic data processing of a relief land surface, determining an imaging reference plane according to the highest point of a collection region, and projecting the relief land surface to a regular grid to fill a constant speed approaching to the near land surface in the relief land surface; using Fourier finite extrapolation operators of one-way wave equation to make wave field extrapolation on shot seismic source wave fields and detector received wave fields along the depth axis, and keeping the wave field between input and output datum equal to zero; imaging the extrapolated shot and detector wave field record by conjugate related imaging conditions, and stacking the related results of each frequency and processing the imaging result into a section image by routine display software, and the invention has an obvious imaging effect of complex construction on the condition of relief land surface.

The invention belongs to an imaging method for nonlinear frequency modulation label change in the synthetic aperture radar imaging technology, which comprises the steps of two-dimensional frequency domain unfolding, filtering processing, nonlinear frequency modulation label change, distance compression, distance migration correction, rest phase compensation and position compression. In the method of the invention, the characteristics of orthogonality and minimum square error of the Legendre polynomials are utilized for carrying out three-order unfolding on the two-dimensional frequency domain signals of the obtained echo signals according to the Legendre orthogonality polynomials, and then, the focusing imaging on targets is realized through carrying out filtering processing and the like on three-order phase items in echo signal two-dimensional frequency domain expression. When the method of the invention is adopted, the maximum phase error under the same condition is less than 0.2 percent of the maximum phase error in the prior art, so the assurance is provided for the high-precision imaging under the large-inclination view angle condition. Therefore, the method of the invention has the characteristics that the phase error in the imaging process can be effectively reduced, the imaging processing of the large-inclination view angle is realized, in addition, the imaging effect is good, the imaging processing efficiency and the precision are high, and the like.

The invention relates to a 3D spectral imaging system and method based on a scattering medium. The system comprises a light source module, a collimation correction module, a to-be-tested object, a scattering medium and a detector that are arranged in sequence along the optical path direction. The light source module is used for generating a light beam with the random wavelength. The collimation correction module is configured to perform collimation correction and impurity astigmatism filtering on the light beam. The beam after the collimation correction and impurity astigmatism filtering irradiates the to-be-tested object. The scattering medium is configured to scatter light passing through the to-be-tested object to form a speckle pattern. The detector is configured to receive the speckle pattern. According to the provided system and method, with the scattering medium for replacing the conventional single lens, a PSF database containing spectral and spatial depth information is established and a target is rebuilt by combining a deconvolution method, so that the spectral information and three-dimensional structural information of the to-be-tested object are simultaneously displayed. Therefore, the 3D spectral imaging system and method have the good spectral resolution and good imaging result.

The invention provides a multielement array electronic scan bio-organization photoacostic layer separating imaging method and the equipment, including the steps: the pulse laser comes into the bio-tissue to produce photoacoustic signal which is collected and stored by computer; use multielement array electronic scan detector receives the photoacoustic signal, synchronously, and at the same time the computer collects and stores the photoacoustic signal; repeat collection until all the group elements are collected once; after finishing collecting, the computer makes filtering and integral processing on the optical-voice signal, and then performs layer separating imaging on the bio-organization by backward projecting algorithm. The equipment includes the laser, the multielement array electronic scan detector, the high-speed collection card and the computer. The equipment's automation level is high, convenient to operate and simpler to control and use.

The invention discloses a modifiable fluorescent compound with the maximum emission wavelength range of 1000-1600nm (the II region of a near infrared window) and a preparation method of the modifiable fluorescent compound. A modifiable group is introduced to a structural compound of a diazosulfide group (D-A-D), the increased modifiable site is connected with a bioactive substance, and furthermore, the water solubility and biological compatibility of the compound are improved. The modifiable fluorescent compound is an organic small-molecular compound and is nontoxic, good in absorbability, extremely good in biocompatibility, extremely high in developing sensitivity, capable of playing an important role in the future medical and optical check, and extremely favorable in application prospect. The compound disclosed by the invention can be used as an infrared window II-region reporter molecule for in-vitro detection and in-vivo imaging and can be used for detecting cell markers and tissue specimens and realizing early diagnosis of diseases, diseases staging, intraoperative navigation treatment, postoperative evaluation of therapeutic efficiency and the like.

The invention relates to a novel multifunctional ultrasound contrast agent and a preparation method thereof. The multifunctional ultrasound contrast agent of the invention is a nanoparticle lipid emulsion containing a core-shell structure, wherein materials of a shell membrane comprise lecithin, cholesterin and magnetic nanometer materials; the center is coated by lqiuid fluorocarbon; and magnetic nanoparticles are inlaid on the shell membrane. The ultrasound contrast agent of the invention is a specificity contrast agent of a reticuloendothelial system, thereby being capable of not only strengthening ultrasonoscopy, but also enhancing CT and MRI development, having good development effects, and having wide application prospects.

The invention relates to a lens assembly capable of realizing automatic focusing by adopting a fixed focus lens. The lens assembly comprises a main board chip, a lens mounting seat, a lens fixing sleeve, the fixed focus lens, an adjustable ring and an automatic focusing control motor, wherein a radial outwardly-extended guiding nail is arranged on the outer peripheral wall of the fixed focus lens; a guiding sliding groove, matched with the guiding nail in a guiding manner, is formed in the inner peripheral wall of the adjustable ring; a run-through groove is formed in the sleeve wall of the lens fixing sleeve; the automatic focusing control motor is connected with the adjustable ring through a transmission apparatus; the main board chip has an automatic focusing control function; and a control line and a power line of the automatic focusing control motor are connected with an automatic focusing control interface in the main board chip. According to the lens assembly, factors of distance changes, day and night co-focusing, temperature drift and the like of a shot object are not needed to be taken into consideration in lens design, so that the design difficulty and cost of the lens are lowered; in addition, automatic focusing can be realized through the moving of the fixed focus lens in distance changes, day and night switching and high temperature and low temperature changes of the shot object, so as to obtain a clear image.

The invention discloses an X-ray image system. The X-ray image system comprises at least one X-ray image device and at least one server, wherein the servers are connected with the X-ray image devices and are used for updating exposure parameter calculating models according to images uploaded by the X-ray image devices and relevant information corresponding to the images and transmitting the updated exposure parameter calculating models to the X-ray image devices; the X-ray image devices are used for receiving the exposure parameter calculating models from the servers; the exposure parameter calculating models stored in the X-ray image devices are updated according to the received exposure parameter calculating models; exposure parameters are confirmed according to the exposure parameter calculating models stored in the X-ray image devices; exposure is carried out according to the confirmed exposure parameters; and images generated after exposure and corresponding relevant information of the images are uploaded to the servers. Correspondingly, the invention also discloses an X-ray image device, a server, an exposure parameter control method and an exposure parameter calculating model updating method.

The invention discloses a method based on a graphics processor for computing direct pre-stack reverse-time migration based on an irregular topography. Migration imaging is directly performed from the irregular topography by applying a reverse-time migration method, and solving is performed by adopting a finite difference method, and the computation speed and efficiency is obviously improved by utilizing the concurrent computation characteristic of the graphics processor.

The invention discloses an imaging method for an inverse synthetic aperture radar of high-speed moving targets. Aimed at high-speed moving targets, the method firstly estimating target motion parameters by using a least square method and envelope alignment, then performing coherence processing on a dechirping echo signal by using the estimated motion parameters, eliminating phase error caused by the motion parameter estimation through a weighting feature vector self-focusing algorithm, and then correcting range migration by using wedge conversion, and finally obtaining an image result. An existing high-speed moving target imaging algorithm uses a dominant scatter method for self-focusing, and the weighting feature vector self-focusing algorithm used in the method has better focusing effect and anti-noise performance, so the method has better imaging effect.

The invention discloses a panoramic image splicing device. The panoramic image splicing device comprises an image splicing module and at least two image transmission paths, wherein each image transmission path comprises an image collection module, a distance detection module and a switch module, and a threshold distance is preset on each distance detection module. When each image collection module images an external object, each distance detection module detects the distance between each image collection module and the external object. When the distance between each image collection module and the external object is larger than or equal to each threshold distance of each distance detection module, each distance detection module controls opening and closing of each switch module, and an image collected by each image collection module is transmitted to the image splicing module through each switch module, and when the distance between each image collection module and the external object is less than each threshold distance of each distance detection module, each distance detection module controls each switch module to disconnect, and the image splicing module splices the image of each switch module and generates a panoramic image. The invention further discloses a panoramic image monitoring system which can accurately perform panoramic monitoring in real time.

A ferric oxide nucleus-gadolinium oxide shell composite nano particle with the surface modified by polyethylene glycol is 50-300nm in average particle size, and uses ferric oxide as a nucleus and gadolinium oxide as a shell; the surface of a composite nano porous microsphere is modified by polyethylene glycol; the particle is hydrophilic, has better stability in a wide pH (Potential of Hydrogen) scope, and is biocompatible; the surface of the nano particle is regular; a plurality of ducts are formed in a shell wall; and the nano particle has a T1 and T2 dual-mode magnetic resonance imaging function. The ferric oxide nucleus-gadolinium oxide shell composite nano particle with the surface modified by polyethylene glycol has an obvious dual-mode imaging effect; a preparation method is simple, green and environment-friendly; raw materials are cheap; the particle can be inoculated with a target molecule to detect a tumor more accurately; and the particle has high application values and wide application prospects in the fields of materials, biology and medicine. The invention discloses the preparation method of the particle.

A support structure comprises a support body, wherein the support body comprises a first surface and a second surface which is arranged opposite to the first surface, a groove used for placement of an optical filter is formed in the first surface, the side wall of the groove is arranged obliquely relative to the bottom face of the groove, and the orthographic projection in the direction facing the bottom face of the groove is located outside the bottom face of the groove. Therefore, when the first surface of the support body and a shot drive component are attached in a flush mode through adhesive, due to the fact the side wall of the groove is oblique relative to the bottom face of the groove, according to the hydromechanics, the obliquely-arranged side wall of the groove can provide the guide function for the flow direction of the overflowing adhesive; meanwhile, due to the fact that the side wall of the groove is arranged obliquely, a gap is reserved between the first surface of the support body and the shot drive component to form a containing space, the overflowing part of the adhesive between the first surface and the shot drive component can flow to the containing space along the side wall of the groove and is prevented from overflowing to the surface of the optical filter placed in the groove, the optical filtering performance of the optical filter is ensured, and accordingly the imaging effect of a camera module is good.

A method for controlling X-ray crack detector includes adding X-ray dosage detection-control unit on existing X-ray crack detector to let said detector have detection-control function of radiation dosage for displaying dosage rate and accumulation dosage of radiation in real time, enabling to convert accumulation dosage to be blackness value of film for controlling exposure parameters so as to have optimum imaging-result.

The invention provides a preparation method of a carrier free nano drug for chemotherapy / light treatment. The drug is prepared by assembling a hydrophobic anticancer drug, a water soluble target, andan amphipathic photosensitizer through a self-assembly technology. The assembled carrier free nano drug is formed through phi-phi accumulation, hydrophobic force, and electrostatic force, is used forchemotherapy and light treatment, and solves the problems that in the prior art, the action mechanism of an artificially synthesized carrier is undefined, and metabolism and most of tumors cannot be inhibited effectively by a single treatment method and still grows slowly.

The invention relates to the field of optical technology, and provides a focusing device and a focusing method. The focusing device comprises a calibration component, a relay lens component, a focusing component and an image processing component. A calibration assembly for generating light having a calibration pattern; The relay lens assembly is arranged between the calibration assembly and the optical fingerprint module, and the calibration assembly is arranged on the object plane of the relay lens assembly, and the image plane of the relay lens assembly coincides with the object plane of theoptical lens in the optical fingerprint module. The focusing assembly is connected with the optical lens for focusing the optical lens; The image processing module is connected with the optical fingerprint module for analyzing the image of the optical fingerprint module. With the addition of relay lens assembly, the distance between the calibration assembly and the optical lens is greatly increased, and the focusing assembly can precisely focus the position of the optical lens, so that the image can be clearly imaged on the image sensor, and the imaging effect of the optical fingerprint module is effectively improved.

The invention relates to a motion platform for an underwater steep slope and an underwater detection robot based on the motion platform. The motion platform comprises a platform body, a motion mechanism, a driving device and a propeller, wherein the motion mechanism is used for supporting the platform body and driving the platform body to do motion on the slope surface of the steep slope; the driving device is used for driving the motion mechanism; the propeller is arranged on the platform body and is used for exerting downward pressure on the platform body, and an inclined angle of 45-90 degrees is formed between the direction of the downward pressure exerted on the platform body and the slope surface of the steep slope on which the platform body is positioned. Compared with the prior art, the motion platform disclosed by the invention has the advantages that the propeller exerts the definite downward pressure on the platform body, so that the platform body is always pressed on the slope surface firmly when doing motion along the slope surface, the phenomenon that the motion platform slides off from the slope surface is avoided, besides, the phenomenon that underwater gravels are raised is not caused, the situation that the detection robot has favorable motion reliability is guaranteed, and stable carrying conditions are provided for detection tasks.

The invention discloses a gold nanorod / silicon dioxide / carbon point nanometer hybrid material. The nanometer hybrid material comprises a gold nanorod as a core, a silicon dioxide layer as a shell, and carbon points distributed on the outer surface of the silicon dioxide layer; and the nanometer hybrid material is obtained by a coupling effect between the silicon dioxide layer coating the outer surface of the gold nanorod and silane functional carbon points containing amido. The invention further discloses a preparation method of the gold nanorod / silicon dioxide / carbon point nanometer hybrid material. The preparation method of the gold nanorod / silicon dioxide / carbon point nanometer hybrid material is simple and controllable. The gold nanorod / silicon dioxide / carbon point nanometer hybrid material realizes application to diffuse reflection imaging through the gold nanorod, realizes application to fluorescent life imaging through the carbon points, realizes non-intrusive multi-mode imaging, and is excellent in application prospect in the cancer diagnosis.

The invention discloses an SAR imaging method including: dividing received first full-aperture SAR echo data into more than two sections of sub-aperture SAR echo data in a azimuth direction and carrying out distance-direction processing on the more than two sections of sub-aperture SAR echo data; combining the more than two sections of sub-aperture SAR echo data which undergo the distance-direction processing into second full-aperture SAR echo data; dividing the second full-aperture SAR echo data into more than two SAR echo-data blocks in the distance direction and processing the more than two SAR echo data blocks in the azimuth direction; and combining the more than two SAR echo-data blocks which undergo the azimuth direction processing into an SAR image. The invention also discloses an SAR imaging device and system. Through adoption of the scheme, high-speed and high-quality imaging processing on the SAR echo data in a large scale is realized with an excellent imaging effect and GPU speed-up ratio.

The invention discloses a microwave photon ISAR (Inverse Synthetic Aperture Radar) imaging method, which comprises the steps of: modulating a single-frequency optical carrier by using an intermediate-frequency linear frequency modulation signal to generate a modulated optical signal, and then converting the modulated optical signal into an electric signal and transmitting the electric signal to atarget through a transmitting antenna; dividing a beam splitting signal of the modulated optical signal into two paths of orthogonal signals with the same polarization state; by taking the two paths of orthogonal signals as reference, respectively performing optical domain chirp removing processing and photoelectric conversion on a reflection signal received by a receiving antenna to obtain two paths of chirp-removed detection signals carrying target information; and finally reconstructing a radar image of the target based on the two paths of chirp-removed detection signals. The invention alsodiscloses a microwave photon ISAR imaging device. In comparison with the prior art, the microwave photon ISAR imaging method can realize complex signal processing of a microwave photon radar echo signal with low cost and high adaptability, and further improve a radar imaging effect.

The invention provides a prism device applied to a periscopic lens module and the periscopic lens module. The prism device comprises a bearing frame, a supporting reset component, a prism and a plurality of shape memory alloy wires, wherein the bearing frame comprises a base with a concave cavity and a supporting table arranged in the concave cavity; the shape memory alloy wires include a first shape memory alloy wire, a second shape memory alloy wire, a third shape memory alloy wire and a fourth shape memory alloy wire; and the first shape memory alloy wire and the second shape memory alloy wire are used for driving the supporting reset component to drive the prism to rotate around a first rotating central axis, the third shape memory alloy wire and the fourth shape memory alloy wire areused for driving the supporting reset component to drive the prism to rotate around a second rotating central axis, and the first rotating central axis is perpendicular to the second rotating centralaxis. The lens module is provided with the prism device. Through the scheme, the prism can rotate towards the two perpendicular central axes, stability is high, the structure is simple, and miniaturization is realized.

The invention provides a transparent display film with blue-ray protection function and a preparation method thereof and a projection system with the same. The transparent display film with the blue-ray protection function comprises a projection display layer, a base material layer, an adhesive layer and a release type material layer which are sequentially overlapped, wherein the raw material formula of the projection display layer comprises 70-99.4% of resin, 0.1-5% of scattering particle material, 0.3-9% of a blue-ray absorbing agent, 0.1-6% of a dispersing agent, and 0.1-10% of a curing agent; the scattering particle material is a mixture prepared through two or more materials with different refractive indexes, and the scattering particle material is the mixture prepared through two ormore materials with different particle sizes. According to the transparent display film with the blue-ray protection function, the raw material formula of the projection display layer comprises the blue-ray absorbing agent, so that residual high-energy glue rays can be absorbed by the blue-ray absorbing agent, and as a result, eyeballs are protected.

The invention relates to the field of machine vision technology, and in particular to an imaging method and apparatus, and an electronic device. The imaging method is applied to an electronic device provided with a structured light module and a dual-camera module, and the method comprises the following steps: obtaining a first image collected by the structured light module, calculating depth of field data of first pixel points in the first image to select a first pixel point with depth of field data within a preset close shot depth of field range in the first image to serve as a first to-be-fused pixel point; obtaining a second image collected by the dual-camera module, calculating depth of field data of second pixel points in the second image to select a second pixel point with depth of field data within a preset distant view depth of field range in the second image to serve as a second to-be-fused pixel point; and fusing the first to-be-fused pixel point and the second to-be-fused pixel point to obtain a target image. Compared with the prior art, the imaging method and apparatus, and the electronic device have the advantages of ensuring a better imaging effect.

The invention provides a high-precision displacement device for a focal plane of a space-borne imaging instrument. The device is used for displacing a displaced imaging sensor of an imaging instrument for celestial imaging or solar imaging to a focal plane of a camera. The device comprises a stepping motor and is characterized in that the device further comprises a worm, a hollow turbine, a cylindrical hollow internal thread sleeve and a cylindrical hollow external thread sleeve; the upper surface of the cylindrical hollow external thread sleeve constitutes an annular instrument installation platform; the hollow turbine, the cylindrical hollow internal thread sleeve and the cylindrical hollow external thread sleeve are arranged coaxially to form a hollow vertical channel, of which the diameter is greater than 15mm; the stepping motor drives the worm to rotate and the worm drives the hollow turbine engaging therewith to rotate; and the hollow turbine further drives the cylindrical hollow internal thread sleeve fixedly and coaxially arranged inside the hollow turbine to rotate synchronously, and the rotated internal thread sleeve makes the external thread sleeve sleeved on the upper part of the internal thread sleeve shift up and down under the control of a limiting mechanism through thread coupling.

The invention discloses a holographic projection box and an imaging method and an interaction method thereof. The holographic projection box comprises a box body, an imaging film arranged in the box body, and a support cover plate arranged on the top surface of the box body. An opening used for watching imaging pictures is arranged in one side of the box body. A tablet computer is arranged on the support cover plate, and an opening through which a screen of the tablet computer projects the images is arranged in the support cover plate. The tablet computer provides a light source for the imaging film through the opening. A plurality of background plates are arranged in the box body. The imaging method comprises the steps of: combining the holographic projection box and the tablet computer, imaging the images or video of the tablet computer on the background plates in the box body through the imaging film, and forming a stereo picture. The interaction method comprises the steps of: identifying a card through a scanning function of a preposition pick-up head of the tablet computer, and cooperating with an APP application program to realize the data interaction. According to the invention, the imaging and film-watching effects are good, and the operation is convenient and flexible.

The invention discloses a ray chromatography imaging method for refracted waves, belongs to a ray imaging technology, and mainly solves the problem of ray imaging of a refracting layer in an earthquake. The ray chromatography imaging method for the refracted waves comprises the following steps of: (1) performing data acquisition, namely acquiring earthquake travel time tm; (2) establishing a velocity model; (3) establishing a linear equation of inversion of the travel time; (4) solving a velocity increment according to the travel time inversion equation; and (5) modifying the velocity model by using the solved velocity increment, solving a new velocity increment according to a new travel time inversion equation, modifying the currently used velocity model by using the new velocity increment, and repeatedly modifying until the solved velocity increment meets an inversion norm, namely the ray chromatography imaging of the refracted waves is achieved at the moment. The method is simple, easy to operate, and high in imaging quality and efficiency.