12results about How to "High resolution imaging" patented technology

The embodiment of the invention discloses a microscope objective optical system, a microscope objective and a wafer detection microscope, and relates to the field of optics. The system is sequentially provided with a first lens group, a second lens group and a third lens group along the same optical axis from an image space to an object space; wherein the third lens group has positive focal power and is used for collecting light beams; the second lens group has negative focal power, the first lens group has positive focal power, the second lens group and the third lens group are used for correcting and compensating the optical system, and the second lens group comprises at least two lenses made of materials with different dispersion coefficients. The second lens group and the third lens group with correction and compensation functions are arranged, so that the optical system can meet the microscopic requirement of an ultra-wide working spectrum range, and the imaging quality is ensured.

The invention discloses a micro-area scanning imaging device and a measuring method. The micro-area scanning imaging device comprises a laser, a double-axis scanning galvanometer SM, a cubic beam splitter CB and a microscope objective OB, wherein the double-axis scanning galvanometer SM gathers laser on a sample S. The cubic beam splitter CB splits signal light reflected after the laser irradiates the sample S to a sample signal detector SD; a plate-shaped beam splitter PB is also arranged between the cubic beam splitter CB and the sample signal detector SD, so that the signal light is further split to the laser detector PD; in the measurement process, a two-dimensional characteristic optical signal graph of the surface of a sample S is obtained based on a sample signal detector SD, then a blank substrate is placed in a to-be-measured area, a two-dimensional reflected light signal graph in the same area as the sample S on the substrate is obtained based on a laser detector PD, the two-dimensional characteristic optical signal graph is subjected to normalization processing based on the two-dimensional reflected light signal graph, and the normalized two-dimensional characteristic optical signal graph is obtained. And obtaining a normalized two-dimensional characteristic optical signal graph, and further drawing a two-dimensional space scanning graph of the physical properties of the sample S. The device and the method are suitable for signal acquisition of fluorescence spectrum, Raman spectrum, second harmonic and the like, and high-resolution imaging of various material microcells is realized by performing two-dimensional laser scanning on the surface of a sample.

The application relates to a multi-aperture imaging space remote sensing target positioning optical system and a calibration method, and relates to the field of remote sensing and aerospace imaging optical instruments. The application solves the contradiction between the requirements of a large field of view and high resolution imaging of a traditional single-aperture optical imaging system, and realizes accurate positioning of a target to meet the intelligent requirements of a multi-aperture optical imaging system. The multi-aperture imaging space remote sensing target positioning sub-aperture imaging optical system comprises an electromagnetic vibration mirror, a beam-reducing telescope group, a fast reflection mirror and a rear focusing mirror group. The beam-reducing telescope group and the rear focusing mirror group are connected through the fast reflection mirror, and the light beam is connected with an imaging branch through the electromagnetic vibration mirror. After the imaging light beam passes through the telescope system, the imaging light beam is reflected by the fast reflection mirror and focused on a detector to form an image. The application is also suitable for a mobile platform for fast positioning and high-precision capturing of a dynamic target in the field of industrial precision machining and space remote sensing.

The embodiment of the invention discloses a plane X-ray imaging detection method and system. The method comprises: irradiating a plurality of regions of a human body with planar X-rays; acquiring energy projection data of a plurality of energy windows of a plurality of areas of the human body by using a photon counting detector; obtaining image information of a corresponding human body area according to the energy projection data of the plurality of energy windows; and splicing the multiple pieces of image information to obtain a detection image. According to the planar X-ray imaging detection method and system disclosed by the embodiment of the invention, abundant detection information can be conveniently and accurately obtained under the combined action of the planar X-ray and the photon counting detector.

This invention relates to the field of marine engineering and geological science experimental technology, specifically to a real-time visualization observation device and method for fine-grained sediment flocculation. The device includes a water tank and a sand discharge box disposed within the water tank. The sand discharge box contains a sand discharge trough, which is arc-shaped. This real-time visualization observation device for fine-grained sediment flocculation, equipped with multi-directional sand discharge components, effectively adapts to the differentiated sand discharge needs at different flocculation stages. It solves the shortcomings of traditional sand discharge methods, which have fixed heights and angles and cannot simulate complex flocculation environments. The arc-shaped sand discharge trough guides the direction of sediment discharge. The lifting component achieves gradual adjustment of the sand discharge height through the cooperation of the squeezing ring and squeezing plate. The locking component securely fixes the sand discharge height. The overall structure has strong linkage and is easy to operate, allowing for flexible adjustment of sand discharge parameters to simulate fine-grained sediment flocculation scenarios under different natural conditions. This expands the applicability of the device, reduces the difficulty of experimental operation, and improves experimental efficiency.

The invention discloses a microwave correlated imaging method and device based on frequency and phase joint modulation, and relates to the technical field of radars. The method comprises the following steps: acquiring radar parameters; performing grid division on the target imaging scene; constructing a random radiation field of frequency and phase joint modulation based on radar parameters, a grid division result and a frequency and phase modulation function; receiving an echo signal of the target by using the random radiation field, and obtaining a distance pulse pressure envelope based on the received echo signal; and on the basis of the sub-optimization problems of the random radiation field, the distance pulse pressure envelope and the noise variance, the sub-optimization problem of the target sparse characteristic parameter and the sub-optimization problem of the super-resolution image reconstruction, the super-resolution image of the target is determined by alternately estimating the noise variance, the target sparse characteristic parameter and the super-resolution image. The method can effectively solve the problems that a random radiation field is single in construction mode and insufficient in flexibility, the image super-resolution capability is remarkably reduced under the condition of a low signal-to-noise ratio, and the imaging quality is limited.

The invention discloses a living skin light transparentizing reagent and a reversible skin light transparentizing method, and belongs to the technical field of biomedical optical imaging. The living skin optical transparency reagent comprises a first solution and hydrogel containing food coloring, wherein the first solution is prepared from the following components in percentage by volume: 40 to 60 percent of carbohydrates, 1 to 10 percent of penetration enhancer and 35 to 55 percent of alcohol substances; the hydrogel containing the food coloring is prepared by dissolving a high-molecular compound in water and then adding the food coloring, and according to the mass percent, the content of the high-molecular compound is 0.1-1%, the content of the water is 49-89.9%, and the content of the food coloring is 10-50%. The living body skin optical transparency reagent enables skin tissues to become transparent to light, improves imaging depth, can accurately obtain distribution information of skin microvascular structures, blood flow and blood oxygen, and can reduce inflammatory response, so that the living body skin optical transparency reagent has a good application prospect in skin optical imaging.

The application provides a micro-nano optical element, an optical lens and a camera, and relates to the technical field of spectral imaging. The micro-nano optical element comprises oppositely arranged first and second surfaces; the first surface comprises a light filtering film layer, and the light filtering film layer is used for blocking light of a wavelength outside a preset wavelength band; and the second surface comprises a plurality of annular step structures, the height of the step structure is proportional to the wavelength value of the preset wavelength band, so that the light of the preset wavelength band can be effectively collected, the light of other wavelength bands can be filtered, and high-resolution imaging of the preset wavelength band can be realized.

The invention provides a miniaturized ultrathin imaging system based on annular aperture imaging and a preparation method thereof, devices of the system comprise an annular aperture ultrathin lens, an automatic focusing direct drive motor, a CMOS detection chip, a flexible circuit board and the like, and high-resolution imaging under strong volume constraint, wide spectral range and large working distance is realized. The manufacturing method of the annular aperture objective lens can realize high-precision, low-cost and batch production of the ultrathin imaging lens.

The application provides a kind of based on physical drive deep learning's non-diffraction computing ghost imaging optimization method, using the deep learning method of cyclic consistent generative adversarial network model based on physical drive inhibits the image quality degradation caused by quasi-non-diffraction speckle point spread function multi-stage side lobe, improves the imaging quality and depth of field of computing ghost imaging, comprising: using annular phase template generates quasi-non-diffraction speckle;The binary image data set is reconstructed to obtain the initial reconstructed image;The real physical imaging degradation process is embedded into the network as an explicit physical priori, a physical driven double cycle generative adversarial network model is constructed and trained;The transmission light intensity of the actual target is collected by using a single-pixel detection system and is correlated and reconstructed, and the reconstructed image with high-order oscillation is input into the trained network model, and finally a high-quality target image is reconstructed.The application significantly removes the high-order oscillation caused by the side lobe of quasi-non-diffraction speckle point spread function, while maintaining the advantage of large depth of field, realizes high-resolution and high-quality image reconstruction.This also provides a new idea for the subsequent research of long-distance imaging of computing ghost imaging.

The application discloses a kind of full clear high-resolution circuit board image acquisition device and method.The device includes scanning motion mechanism, visual acquisition component installed at its end and control processing unit.The method is first according to circuit board size, field of view range and overlap rate planning scanning path;In mechanism moves to acquisition point position and utilizes continuous frame difference motion score determination stable, multiplex scanning motion mechanism is adjusted height in Z direction to determine target focusing height;Then focus point sequence image is collected near focusing height and is obtained local full clear image by depth of field synthesis;Finally, multiple local images are registered in overlapping area, globally optimized and corrected in brightness consistency, and generate whole board high-resolution image.The application can consider whole board imaging range and local detail resolution, improve the clarity of circuit board image acquisition, splicing accuracy and brightness consistency, suitable for circuit board detection, reverse analysis and quality traceability etc.

The invention belongs to the technical field of nanostructure manufacturing, and discloses a metal nanoarray structure prepared on graphene in an in-situ controllable mode and a preparation method thereof.The preparation method comprises the steps that a silicon wafer serves as a substrate, and a graphene layer is prepared on the silicon substrate through a mechanical stripping method; a silicon cantilever beam containing raw material molecules is installed on an atomic force microscope to scan the prepared substrate, a high-resolution surface topography image is generated, and after a flat position without obvious defects is selected according to the topography image, the tip of the silicon cantilever beam makes contact with the graphene or the surface of the silicon substrate; and then positive voltage is applied to the tip, the retention time and the load are adjusted, so that the metal nanometer material is deposited near the tip, and a metal nanometer array structure is formed. By means of the method, in-situ controllable manufacturing of the size, the morphology, the composition, the structure and the position of the metal particles on the surface of the graphene can be achieved. Therefore, the material can be better popularized and applied in the technical fields of electronics, optics, catalysis, sensing, field emission, display devices and the like.