85results about How to "Improve imaging effect" patented technology

The invention discloses a large-image-plane video small lens and a camera, and relates to the technical field of optical lenses, and the large-image-plane video small lens is provided with an object side and an image side which are oppositely arranged along the optical axis direction. The small video camera with the large image plane 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 which are sequentially arranged from the object side to the image side. Wherein the first lens, the second lens, the fourth lens, the fifth lens, the seventh lens and the eighth lens are plastic aspherical lenses, and the third lens and the sixth lens are glass aspherical lenses; the resolution ratio of the large-image-plane video small lens is greater than or equal to 12M, the image plane height of the large-image-plane video small lens is phi, and the total optical length of the large-image-plane video small lens is TTL, 1lt; tTL / phi < = 1.5. The technical effects of large imaging surface, good imaging effect and small size are achieved through arrangement and combination of the eight lenses, material selection, surface type distribution and parameter design of the lenses.

The application discloses a kind of wide temperature range stable copper cluster scintillator and its preparation method and application, the scintillator chemical general formula is Cu4X4 (dppyme) 2, by introducing methyl in pyridine ring 6 position structure space constraint, induce to form long-range ordered crystal packing phase, significantly enhance the lattice rigidity.This material has the microcosmic energy level structure of thermal activation delayed fluorescence (TADF) and self-trapped excitor (STE) light emitting mechanism synergism, in-190 ℃ to 150 ℃ extremely wide temperature range, excellent radiation luminescence stability is shown.The application is prepared by room temperature solution method, and process is simple.The flexible film constructed using the material improves the mechanical stability by polymer embedding process, and the spatial resolution reaches 27.8 lp / mm, which is suitable for X-ray detection and imaging in extreme environments such as deep space exploration, polar scientific research and high-temperature industrial detection.

This application relates to a marine vortex SAR imaging simulation method, comprising: acquiring marine environmental data of a target marine vortex region; generating a first geostrophic velocity field based on the sea surface dynamic height data, and generating a second geostrophic velocity field based on the three-dimensional temperature data and three-dimensional salinity data; performing a weighted summation of the first and second geostrophic velocity fields according to their respective weight values ​​to generate a composite geostrophic field corresponding to the target marine vortex region; and performing SAR simulation imaging on the target marine vortex region based on the composite geostrophic field to obtain a simulated SAR image of the target marine vortex region. Based on the above method, the problem of unclear details due to resolution limitations in sea surface dynamic height data can be improved; and the characteristics of vortices can be more fully represented, increasing the imaging effect of SAR in marine vortex imaging simulation applications.

This invention provides a cathode-unitized X-ray source, a static CT imaging system, and an image enhancement method, comprising: a vacuum tube; a cathode end for emitting electron beams, the cathode end including an exposure control module and multiple electron emission units arranged in a matrix on the same side of the exposure control module, all electron emission units being independent and electrically connected to the exposure control module; an anode target bombarded by the electron beam, the anode target including an anode body and a target surface formed on the anode body, the target surface being located on the emission path of the electron emission units; when the exposure control module receives an external control signal, it establishes a voltage line between the selected electron emission unit and the exposure control module, the electron emission units emitting electrons one by one or row by row toward the target surface, and the target surface reflecting X-rays to a window under the bombardment of electrons. This invention can increase the scanning range, improve the image quality of static CT, and extend the lifespan of the X-ray source.

This utility model relates to the field of semiconductor manufacturing technology. The technical problems it addresses are large size, large space occupation, low space utilization, high labor costs, and low efficiency. To solve these problems, this utility model provides a system for semiconductor electronic components. The utility model includes: a conveying assembly comprising two conveying tracks, a driving component, and two conveying elements; the two conveying tracks are arranged in parallel; the two conveying elements are symmetrically arranged on the two conveying tracks; the driving component is connected to the two conveying elements; a detection position is located on the conveying assembly; a detection module is located above the detection position; the detection module includes a projector, a camera, and a reflection component; the projector is located to the side of the camera and perpendicular to the electronic component; the camera is perpendicular to the electronic component; the reflection component is located at the bottom of the projector. This utility model reduces size, increases space utilization, lowers labor costs, and improves efficiency.

The application provides a detection system and a control method thereof, and relates to the technical field of semiconductor detection. The detection system comprises an illumination module and an imaging module arranged in sequence. A product to be detected is arranged between the illumination module and the imaging module. The illumination module and the imaging module respectively comprise a first time sequence diaphragm and a second time sequence diaphragm arranged in rotation. The first time sequence diaphragm is used for obliquely irradiating the product to be detected with illumination light generated by the illumination module. The second time sequence diaphragm is used for filtering or weakening low-frequency diffraction light from the product to be detected and retaining high-frequency diffraction light. The first time sequence diaphragm and the second time sequence diaphragm are synchronously arranged in time sequence, so that the illumination light incident on the product to be detected and the diffraction light from the product to be detected to the imaging module cross at an optical axis. The high-frequency diffraction light is prevented from being shielded while the 0th-order diffraction light is filtered. The final image is formed by fitting different images with reduced 0th-order diffraction light, the imaging effect is improved, the contrast of the system is improved, and high-pass filtering is realized.

The invention discloses a multi-bit quantum image sensor based on single photon detection and a hardware system, and belongs to the technical field of quantum image sensors. The quantum image sensor comprises a photon detection array; each pixel in the photon detection array corresponds to one quantum response unit; an avalanche trigger circuit in the quantum response unit is used for detecting avalanche current caused when a photon detection unit detects photons and outputting a digital trigger signal; the quenching circuit is used for quickly terminating current after avalanche; the photon counting unit is used for counting the number of photon events within specified exposure time; and the multi-bit quantization unit is used for performing quantization coding on the photon count value based on the statistical characteristics of the photon events. According to the scheme, a hardware integrated processing architecture from quantum image acquisition to image reconstruction is formed, and the imaging effect of image reconstruction based on data acquired by the quantum image sensor is improved.

The invention discloses a zoom projection optical system, and relates to the technical field of projection systems.The zoom projection optical system is provided with an object side and an image side which are correspondingly arranged in the optical axis direction, and the zoom projection optical system comprises a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group and a light-emitting chip which are sequentially arranged from the object side to the image side; the first lens group, the second lens group, the third lens group and the fourth lens group are movably arranged along the optical axis direction, the second lens group, the third lens group and the fourth lens group are used for zooming, and the first lens group is used for focusing. Through the arrangement, the imaging quality of the zoom projection optical system can be ensured, the characteristics of small size and low cost of the zoom projection optical system are met, the zoom projection optical system has excellent thermal stability, the thermal virtual focus phenomenon of the whole zoom projection optical system in a high-temperature state is reduced, and the service life of the zoom projection optical system is prolonged. The zoom projection optical system can still keep good imaging performance on the premise that the temperature deviation is not larger than 20 DEG C.

The invention discloses an optical imaging device, the optical imaging device comprises a lens barrel, a lens group and a spacing element group, the lens group and the spacing element group are assembled in the lens barrel, the lens group comprises a first lens, a second lens, a third lens, a fourth lens and an eighth lens which are sequentially arranged from an object side to an image side along an optical axis, and an air gap is formed between every two adjacent lenses on the optical axis; the spacing element group comprises a first spacing element positioned between the first lens and the second lens and contacted with the image side surface of the first lens; the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging device satisfy 1.6 lt; f1 / flt; 3; the aperture value fno of the optical imaging device is not less than 1.50 and not more than fnolt; 1.6); the distance EP01 from the object side end surface of the lens barrel to the object side surface of the first spacing element on the optical axis, the center thickness CT1 of the first lens on the optical axis and the refractive index N1 of the first lens satisfy 0.75 lt; eP01 / (CT1 * N1) lt; and 1.4.

The embodiment of the application discloses a fixed focus lens, which 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 arranged in sequence along an optical axis from an object plane to an image plane; the first lens is a negative focal length lens, the second lens is a negative focal length plastic aspheric lens, the third lens is a positive focal length plastic aspheric lens, the fourth lens is a positive focal length glass lens, the fifth lens is a positive focal length plastic aspheric lens, the sixth lens is a negative focal length plastic aspheric lens, the seventh lens is a positive focal length plastic aspheric lens, and the eighth lens is a positive focal length plastic aspheric lens. By adopting the technical scheme, the fixed focus lens comprises eight lenses, the focal lengths and surface shapes of the lenses are reasonably distributed, the design of the fixed focus lens with excellent comprehensive performance which takes into account imaging requirements and compact structure is finally realized, and the comprehensive performance meets the use requirements of a general sensor of security monitoring.

This disclosure pertains to the field of exploration geophysics and presents a method and system for combined active and passive source reverse time migration imaging of metallic minerals. The method includes: performing time difference correction on active and passive source seismic data from the same subsurface structure; performing wavefield separation on the time-aligned active and passive source seismic data to reconstruct the P-wave and S-wave fields of the active source and the passive source; performing active and passive source wavefield extrapolation based on the two-way wave equation; obtaining active and passive source PS-converted wave imaging results using cross-correlation imaging conditions; and performing weighted superposition and fusion to obtain the combined active and passive source imaging results. This disclosure leverages the high resolution advantage of active sources combined with the deep detection capability of passive sources, replacing the limitations of single-source detection and achieving high-precision deep reverse time migration imaging.

This application discloses a microscope objective optical system, relating to the field of optical instrument technology. The system includes a first lens group, a second lens group, and a third lens group. The three lens groups are configured such that the first lens group has positive refractive power, the second lens group has positive refractive power, and the third lens group has negative refractive power. Furthermore, the composition of each of the first, second, and third lens groups is defined, and their focal distances are defined and satisfy preset conditions. Based on this design, the microscope objective optical system has a long working distance, large aperture, high resolution, good imaging performance over a wide wavelength range, and well-corrected chromatic aberration.

The embodiment of the utility model provides a camera device, which comprises a light-transmitting body, a light-transmitting lens and a light-transmitting lens, under the condition that the light shielding body is attached to the light transmitting body, the light shielding body is located on the light entering face of the light transmitting body and used for restraining light rays entering the light transmitting body from the target angle; and the sensor is arranged on the light emitting side of the light-transmitting body and is used for receiving the light passing through the light-transmitting body and imaging. Therefore, the problem of poor imaging effect of the camera device in the prior art can be solved, and the technical effect of improving the imaging effect of the camera device is further achieved.

This invention discloses a roughness testing device and method for plastic-coated steel pipes, belonging to the field of steel pipe testing technology. It includes an operating table, with an equipment box bolted to its upper surface. A wide-angle high-definition camera is mounted on the lower surface of the equipment box. A fixing plate and a connecting plate are bolted to the upper surface of the operating table. A motor is bolted to the outer wall of the fixing plate. During operation, the device transfers the workpiece to the operating table using a robotic arm. An electric telescopic rod then drives a clamping plate to hold the workpiece. The motor then rotates the connecting plate and the clamping plate, allowing the wide-angle high-definition camera to perform a comprehensive inspection of the workpiece. A cleaning roller cleans the workpiece, removing particulate impurities from its surface, thus improving the accuracy of the wide-angle high-definition camera's results.

This application provides an ultrasound imaging method and apparatus, which emits a mixed sequence of ultrasound waves including a first sequence of ultrasound waves and a second sequence of ultrasound waves. The first sequence of ultrasound waves is used to detect the motion velocity of a target tissue and calculate the motion velocity of the target tissue at each beam combining point. The second sequence of ultrasound waves is used to image the target tissue. The motion velocity of the target tissue at each beam combining point is calculated based on the first sequence of ultrasound waves. Then, the beam combining data at each beam combining point of the second sequence of ultrasound waves is compensated, or the beam combining parameters at each beam combining point of the second sequence of ultrasound waves are determined, or the number of times the second sequence of ultrasound waves is combined is determined. Finally, combined imaging is performed. In this way, ultrasound imaging is directly or indirectly compensated based on the motion velocity of the target tissue, thereby improving the imaging effect.

This invention relates to a hypoxia-responsive T2-T1 switchable MRI contrast agent, its preparation method, and its application. The hypoxia-responsive T2-T1 switchable MRI contrast agent comprises iron oxide nanoclusters and polyethylene glycolamine and / or ethanolamine modified on the iron oxide nanoclusters. The iron oxide nanoclusters are obtained by cross-linking iron oxide nanoparticles via hypoxia-sensitive azo bonds. The MRI contrast agent of this invention can specifically respond to the hypoxia environment of the tumor microenvironment, thereby achieving a change from aggregation to dispersion of extremely small iron oxide nanoclusters, thus enabling the switching from T2-type to T1-type contrast signals. Furthermore, after dissociation in response to the hypoxia environment, the re-formed extremely small iron oxide nanoparticles are more readily metabolized, increasing biocompatibility.

The invention provides an ultrasonic microbubble-chlorprazole-loaded nanoparticle composite drug delivery system as well as a preparation method and application of the ultrasonic microbubble-chlorprazole-loaded nanoparticle composite drug delivery system. Specifically, the drug loading system can directionally realize targeted delivery, and meanwhile, harsh storage and transportation conditions, strict preparation formula control and advanced release in non-target tissues are avoided through an optimized preparation method, so that the drug accessibility and the targeted drug loading efficiency are greatly improved.

The invention discloses a structure for improving the sensitivity of an EBAPS cathode and an EBAPS device thereof. The structure comprises a cathode lens, an inverted pyramid micro-nano array structure, a filling diffraction material layer, a composite metal conductive film, a composite metal sealing film and a photoelectric cathode, an inverted pyramid micro-nano array structure is arranged on one side surface of the cathode lens; and a filling diffraction material layer is arranged on the inverted pyramid micro-nano array structure. The cathode lens with the inverted pyramid array microstructure is adopted, and the cathode lens has multiple structural modes, so that sealing of a vacuum cavity is facilitated, and the excellent conductivity of the photoelectric cathode is guaranteed.

The invention discloses a heart CT imaging method and device, electronic equipment and a storage medium. The heart CT imaging method comprises the steps of obtaining a plurality of reconstructed images corresponding to a plurality of periods based on original heart scanning data; determining an initial motion field of scanning angles corresponding to the plurality of reconstructed images based on a motion field estimation model; fitting the initial motion field to obtain a target motion field of all scanning angles; and performing motion compensation on the heart images corresponding to the plurality of scanning angles based on the target motion field to obtain a plurality of compensation images, and fusing the plurality of compensation images to obtain a target image. According to the heart CT imaging method, the deep learning network is combined with the multi-phase image to estimate the operation field, the heart motion field can be estimated more accurately, and the imaging effect is better.

The utility model discloses a zoom projection lens which comprises a first lens assembly, a second lens assembly, a third lens assembly, a diaphragm, a fourth lens assembly and a fifth lens assembly which are sequentially arranged along a direction from an object space to an image space. A full-group linkage zoom design is adopted, and the first lens assembly is set as a zoom group for changing the focal length of the projection lens; the second lens assembly, the third lens assembly, the fourth lens assembly and the fifth lens assembly are arranged to be a compensation group used for offsetting the image surface position change caused by the movement of the zoom group. When zooming is carried out from the telephoto end to the wide-angle end, the distance between the second lens assembly and the third lens assembly is gradually increased. According to the utility model, the space occupied by the lens is reduced, so that the lens can adapt to the working condition of a compact installation space, the lens can maintain excellent imaging performance at different focal lengths within the working temperature range of a special application scene, and the flexible adaptability of the zoom projection lens is improved. The utility model also provides a projection system.

This utility model discloses a detection device for negative electrode cap damage using a line scan camera, comprising a base, a stand, a line scan camera, and a surface light source body. The lower end of the stand is slidably and adjustablely connected to the base. The line scan camera is slidably connected to the stand via a camera frame, and the surface light source body is slidably connected to the stand via a light source frame. The line scan camera is positioned below the surface light source body. The light source body and the line scan camera are arranged parallel to each other, resulting in a simple mechanical structure that facilitates adjustment of the positions of the light source and camera. This device is universally applicable to the detection of negative electrode caps of different models and sizes. The tilted shooting method of the line scan camera improves the imaging effect of negative electrode cap damage and increases the detection rate of negative electrode cap damage. The tilted lighting of the surface light source body ensures uniform illumination in the imaging.

The utility model discloses an optical imaging system and an endoscope. The optical imaging system comprises a first lens, a second lens, a third lens, a triple cemented lens group, a double cemented lens group and a steering prism which are sequentially arranged from an object side to an image side. Wherein the object side surface of the first lens is a convex surface at the optical axis, and the image side surface of the first lens is a concave surface at the optical axis; the second lens is a 30-degree steering prism; the object side surface of the third lens is a plane, and the image side surface of the third lens is a convex surface; the object side surface and the image side surface of the fourth lens in the triple cemented lens group are convex surfaces, the object side surface and the image side surface of the fifth lens are concave surfaces, and the object side surface and the image side surface of the sixth lens are convex surfaces; the object side surface of the seventh lens in the doublet lens group is a plane, the image side surface of the seventh lens is a convex surface, the object side surface of the eighth lens is a concave surface, and the image side surface of the eighth lens is a convex surface. According to the optical imaging system and the endoscope, at least the problems that an optical imaging system of the endoscope is large in aperture and large in imaging distortion can be solved.

Provided is a drug useful for photoimmunotherapy. Specifically, provided is a conjugate including an antibody molecule, a particle having an average particle diameter of 100 nm or less, and a photosensitive portion. In the conjugate, the particle having an average particle diameter of 100 nm or less is linked to the antibody molecule, and at least one of the antibody molecule or the particle is bound to the photosensitive portion. The photosensitive portion is a portion showing increase of hydrophobicity when irradiated with a light beam having a wavelength of from 500 nm to 900 nm or a portion containing a phthalocyanine skeleton.

The utility model provides a position adjusting mechanism and a camera device using the same. The position adjusting mechanism comprises a camera mounting base arranged on a floating substrate; the horizontal adjusting assembly is arranged on the floating substrate, abuts against the camera mounting base and is used for driving the camera mounting base to move in the horizontal direction relative to the floating substrate by adjusting the horizontal adjusting assembly; the floating substrate is arranged on the bottom plate through the vertical adjusting rod and the vertical guide rod; the vertical adjusting rod is rotatably arranged on the bottom plate, is matched with the threads on the floating substrate and is used for driving the floating substrate to move in the vertical direction relative to the bottom plate by rotating the vertical adjusting rod; the vertical guide rod is arranged on the bottom plate and used for guiding the vertical movement direction of the floating substrate. The position adjusting mechanism and the camera device applying the position adjusting mechanism realize integral sliding of the camera and bidirectional fine adjustment of the lens, and ensure accurate centering of the lens and the light shielding plate.

The invention belongs to the technical field of medicinal chemistry and nuclear medicine, and particularly relates to a PET probe based on radioactive metal labeling and a preparation method and application of the PET probe. Comprising a compound with a result shown in a formula (I). The radioactive probe disclosed by the invention has an obvious target to non-target ratio, can be used as a candidate probe for targeting CDK4 / 6, realizes precise positioning of tumors, and provides visual guidance for subsequent targeted therapy; due to the high specificity of the CDK4 / 6 gene, the CDK4 / 6 gene is expected to be developed into an accompanying diagnosis medicine, a clinical medication scheme is guided by quantitatively analyzing the CDK4 / 6 expression level in tumor tissue, and personalized treatment is achieved; and meanwhile, a new drug screening means and an analysis approach are provided for revealing the drug resistance mechanism of piperisib, ribociclib or abelsib and the like in breast cancer treatment.

The invention discloses an imaging device and a vehicle, the device comprises an optical waveguide, an image acquisition module and an image output module, and the image acquisition module is in communication connection with the image output module; the optical waveguide is used for splitting incident light to obtain a first light beam and a second light beam, transmitting the first light beam to a target position and transmitting the second light beam to the image acquisition module, the first light beam being visible light, and the second light beam being invisible light; the image acquisition module is used for imaging and processing the second light beam to obtain a target image; and the image output module is used for projecting the target image to the optical waveguide, and the optical waveguide transmits the target image to the target position. In this way, the imaging effect can be improved.

The application relates to the field of pipeline blockage detection, in particular to a heat supply network building pipeline blockage detection device, which comprises a vision mechanism, the vision mechanism comprises a shrinkage container, the outer wall of the shrinkage container is attached to the inner wall of a pipeline, a camera is arranged inside the shrinkage container and faces the inner wall of the pipeline, at least the part of the shrinkage container facing the camera is a transparent piece, the camera can shoot the inner wall of the pipeline through the shrinkage container, a traction mechanism is connected with the vision mechanism and moves the vision mechanism along the axial direction of the pipeline, through the design of the shrinkage container and the adoption of transparent materials, when detection is carried out, the shrinkage container expands and makes the outer wall attached to the inner wall of the pipeline, water flow can be squeezed to the positions on both sides of the shrinkage container, when the camera shoots and detects the inner wall of the pipeline, there is no water flow between the camera and the inner wall of the pipeline, thereby reducing the influence of water flow and corrosion floating objects on the camera visual line and light supplementing effect, and improving the imaging effect.

This invention relates to a bistatic seabed acoustic imaging method based on pixel statistical distribution weighting. Utilizing the characteristic that the positions of real seabed features in the imaging image are fixed while spurious features vary with the position of the receiving array, a statistical method is used to obtain the pixel distribution characteristics of the acoustic image. The statistical distribution probability of each pixel is then used as the pixel weight to perform weighted stitching of multiple acoustic images. The method includes: bistatic seabed scattering signal modeling and simulation, received signal acoustic imaging processing, pixel statistical distribution processing, and weighted stitching and fusion of multiple acoustic images. Compared with conventional bistatic acoustic imaging methods, the method proposed in this invention can effectively reduce spurious features and random noise caused by the inherent characteristics of the one-dimensional horizontal linear array in the acoustic image, highlighting real features in the acoustic image and achieving imaging and discrimination of significant seabed features.

According to the high-pixel large-target-surface front-view optical system and the camera module applying the same, the optical system is composed of seven lenses, through reasonable matching of shapes and focal power of all the lenses, the optical system has the design advantages of being stable in performance, high in pixel, large in target surface, free of thermalization and free of ghost images; the imaging range and distortion requirements of the foresight intelligent driving optical system are effectively met, and the imaging effect of equipment matched with the system is improved.

The utility model discloses a multispectral face photographing device, which comprises a base provided with a control module; the light supplementing assembly comprises a reflecting cover and light supplementing pieces, the reflecting cover is connected to the base and forms a detection cavity for containing the human face, the light supplementing pieces are installed on the inner wall of the reflecting cover and evenly distributed in the arc-shaped extending direction of the reflecting cover, and the light supplementing pieces are electrically connected with the control module and used for emitting light sources of various wavelengths; and the scanning assembly is mounted on the reflecting cover and extends into the detection cavity, and the scanning assembly is electrically connected with the control module and transmits face detection data. According to the utility model, the problem of non-uniform multi-spectral light supplement during photographing detection is solved.