37 results about "Optical space" patented technology

The invention discloses a reflective beam-combining visual field splicing system, a multi-path laser scanning beam-combining system and a laser scanning microscope, and relates to the technical field of microscopic imaging instruments, the reflective beam-combining visual field splicing system comprises at least one reflective beam-combining subunit, and the reflective beam-combining subunit comprises a relay lens group and an adjustable reflector; the relay lens group comprises two 4f systems, pupil conjugate planes of starting points of the 4f systems are different, and a focus conjugate plane exists in an internal optical space between the two 4f systems; the adjustable reflecting mirror is arranged in the internal optical space, receives and reflects the light beam from the first light path, and meanwhile allows the light beam from the second light path to pass through without blocking; wherein the first light path light beam reflected by the adjustable reflecting mirror and the straight-through second light path light beam are subjected to beam combination visual field splicing on a focal point conjugate surface, and are converged on the same pupil conjugate surface. According to the reflection-type beam-combining view splicing system, the light path structure can be simplified, and the transmission loss of laser energy is reduced.

A space-based optical space target detection method fusing track information comprises the following steps: acquiring an image spot position of a point target in a star map of a current position by using a space-based optical camera, and determining a candidate target set according to different motion characteristics of a fixed star and a space target; determining the center-of-mass coordinate and pixel range of the candidate target under the image plane coordinate system according to the orientation of the optical camera, converting the center-of-mass coordinate and pixel range into the sight angle and range under the satellite body coordinate system, carrying out inter-frame trajectory association on the obtained star map sequence, updating the space target library according to trajectory information, and outputting a space target detection result. And repeating the steps to traverse all star maps.

The invention provides an ultra-short and ultra-strong laser pulse measuring device and an optical time-space coupling distortion measuring and data processing method based on the device. The device comprises an ultra-short and ultra-strong pulse laser system to be measured, an attenuation module, a beam splitter, a spectral phase measurement unit, a reflector, a micro-lens array, a binary intensity coding plate, a lens, a precision displacement platform, a dispersion element, an imaging lens and a CCD (Charge Coupled Device). The device and the method can be applied to quantitative measurement of ultrashort pulse light space-time coupling distortion.

[Problem] To control according to the requirements of various communication services and transmit information via an appropriate communication network. [Solution] The present invention comprises: a line measurement unit 11 which measures line measurement information when performing line control based on line route information and line parameters for transmitting and receiving communication service data to and from an optical space communication device 2 which performs optical space communication via one or a plurality of lines mounted on a non-terrestrial node group and an optical ground station, on the basis of a service request and line measurement information on a plurality of lines, received from the non-terrestrial node group; a position calculation unit 13 which calculates position information on the non-terrestrial node group; a line parameter calculation unit 10 which calculates line route information and line parameters on the basis of the position information, a service request, and line measurement information; a line control unit 12 which controls a line on the basis of the line route information and the line parameters, for the optical space communication device 2; and a line information communication unit 14 which communicates the service request, the line measurement information, the line route information, and the line parameters with the non-terrestrial node group.

The application relates to a resource allocation method of a full-optical space division multiplexing elastic optical network, and belongs to the technical field of optical network communication. The method comprises the steps of fiber core grouping and spectrum partitioning, fiber core selection and L-shaped frequency block allocation. The fiber core grouping and spectrum partitioning step divides a seven-core optical fiber into three groups, divides an in-group priority area, and sets a grouping partition weight coefficient. The fiber core selection step arranges the fiber cores in descending order according to the fiber core weight values according to the frequency slot usage, the link length and the number of overlapping frequency slots between the fiber cores on a path, selects the fiber core with the maximum weight value as a transmission fiber core, the L-shaped frequency block allocation step obtains an L-shaped frequency block set satisfying the connection type limitation and the crosstalk threshold limitation according to the remaining unallocated frequency blocks and the frequency block allocation limitation condition, and selects the L-shaped frequency block with the maximum weight value as a transmission frequency block by using an L-shaped frequency block weight calculation formula. The application can balance the number of idle slice machines at each node on the network and guarantee efficient transmission of service requests.

The invention relates to the technical field of cooling of optical equipment in a high-energy laser system, in particular to a water-cooling optical mirror bracket, which is characterized in that an annular or spiral annular water channel matched with the circumferential heat dissipation characteristic of a lens is arranged in a mirror bracket body, and two ends of the water channel are communicated with the outside through connecting ports in the side wall of the mirror bracket. Coolant flows through the water channel to efficiently take away heat. The design does not need an additional water cooling plate, reduces the weight of the mirror bracket, saves the optical space, can be compatible with various coolants such as liquid and gas, is adaptive to the temperature range from the liquid nitrogen temperature to 600 DEG C and the pressure environment from low vacuum to 10 atmospheric pressures, and can be made of alloys such as aluminum, steel and copper. The machining modes comprise 3D printing, casting, friction welding and the like, and the method is suitable for spectacle frames with different thicknesses. The design is uniform in cooling, can guarantee the optical property of the lens and stable light spot quality, and is wide in application range.

An optical space communication device includes a transmitter for transmitting a first signal for optical axis alignment with another optical space communication device including a reflector, the first signal being modulated using a first spreading code, and a receiver for detecting, from a received optical signal, a reflected signal of the first signal reflected by a reflector of the other optical space communication device using the first spreading code, and detecting, from a received optical signal, a second signal for optical space communication transmitted from the other optical space communication device using a second spreading code different from the first spreading code.

Provided is a novel optical space communication apparatus which is capable of inferring a hindrance factor to communication carried out with laser light. An optical space communication apparatus includes light receiving sections that each receive laser light and at least one processor, the at least one processor carrying out: a measurement process of measuring light receiving states of laser light at the respective light receiving sections; a determination process; and an inference process of inferring, based on the light receiving states of laser light, a hindrance factor to communication carried out with laser light.

The application belongs to the technical field of photonic artificial micro-nano structure design and image processing, and discloses an optical spatial differential device for target extraction, a reverse design method and application. The method comprises the following steps: setting a target transfer function according to the functional requirement of an optical device; establishing an optimization model according to the design parameters of a super surface, the design parameters being dielectric constant distribution, and performing certain constraint and binary processing on the design parameters in each iteration process; judging whether the loss function converges or not, outputting an optimization scheme if the loss function converges, and otherwise, performing gradient calculation and continuing the next iteration optimization process. The optical spatial differential device is based on the diffraction optical angular spectrum theory and the Fourier transform property, directly acts on an incident light field image, realizes spatial frequency regulation of the light field image in the wave vector space, and thus achieves the purpose of processing the image in the optical domain. The obtained patterns of the application can be directly applied to a double photopolymerization 3D printing technology, so as to prepare a sample.

The invention discloses a load effect prediction method and device, a medium and a product, and relates to the technical field of semiconductor etching. The load effect prediction method comprises the steps that an optical space image corresponding to a first neighborhood of a to-be-predicted graph and a partial graph distribution density image corresponding to a second neighborhood are acquired, to-be-simulated etching input information of the to-be-predicted graph is determined, and the coverage range of the second neighborhood is larger than that of the first neighborhood; and inputting the to-be-simulated etching input information into a pre-trained etching prediction model to obtain an etching simulation result of the to-be-predicted graph under the action of the load effect. By inputting the optical space image into the etching prediction model, the etching prediction model can capture the characteristics related to the optical proximity effect affecting etching from the optical space image, then the initial condition of etching is predicted, a more accurate etching simulation result is obtained according to the predicted initial condition of etching, and the etching simulation accuracy is improved. And the accuracy of load effect prediction is improved from the side.

The utility model discloses AR dynamic interactive device based on holographic projection technique, including interactive device ontology, the upper portion of interactive device ontology is provided with main projection mouth, and the upside of main projection mouth is installed with compound projection support mechanism, and compound projection support mechanism includes the chassis, and the fixed setting of chassis has acrylic sheet, and the top fixed mounting of acrylic sheet has the positioning frame. This AR dynamic interactive device based on holographic projection technique, and the upper and lower sides of four acrylic sheets are fixedly provided with positioning frame and chassis respectively, form a stable holographic projection curtain wall, will not happen " collapse waist " condition, avoid destroying the symmetry light path required for holographic projection, guarantee holographic projection work normal progress, and four acrylic sheets are combined together and show the pyramid shape, can accurate construction meet the optical space of holographic projection principle, make the light form symmetrical reflection in it, let the observer can clearly see the complete three -dimensional holographic image from multiple angles.

The invention relates to the technical field of laser fault detection, and discloses a laser light path protection and fault rapid positioning method and device, and a medium. The method comprises the following steps: arranging a thermosensitive optical path optical sensor and a space optical sensor at a preset node of a laser; laser power is gradually increased, and light path optical data and corresponding power are bound and stored to preset power after light emitting; controlling the laser to stop light and acquire the initial temperature, gradually increasing the power, acquiring the temperature at preset time after light emission, calculating the temperature increment and the accumulated increment, and stopping light and cooling until the power reaches a preset value after each time of storage; and reading sensor data, calculating actual power and performing early warning. According to the invention, the temperature-sensitive sensor, the optical path optical sensor, the space optical sensor and the control panel are deployed, early warning is carried out by two parameters of power difference and temperature increment, quick response can be realized, device / optical fiber burnout can be avoided, the maintenance cost is reduced, and large-scale integrated equipment is prevented from downtime due to laser fault.

The invention relates to a rongeur, which comprises a fixed handle, fixing the forceps handles; a movable handle; a movable clamp handle; the rongeur further comprises a navigation terminal, and the navigation terminal comprises an optical positioning system which comprises an optical reference frame; the electromagnetic positioning system comprises a first electromagnetic sensor and a second electromagnetic sensor; the navigation system is used for re-establishing the first coordinate position and the second coordinate position in the electrical space coordinate system in the optical space coordinate system, and calculating and displaying the adjusting angles of the movable clamp mouth and the fixed clamp mouth according to the reference coordinate position and the re-established first coordinate position; and the occlusion depth of the movable jaw and the fixed jaw is calculated and displayed according to the re-established second coordinate position. The problem that the adjusting angles of the movable jaw and the fixed jaw of the rongeur are difficult to obtain can be solved, and the problem that the occlusion depth of the movable jaw and the fixed jaw is difficult to accurately obtain can be effectively solved.

The invention discloses a mixed reality space registration method, apparatus and device, and a storage medium. The method comprises the steps of obtaining a plurality of mark coordinates of a reflective mark arranged on a probe tool in an optical space, and determining a first point cloud coordinate set in an optical positioning space; acquiring a second point cloud coordinate set in the virtual space, and performing coarse registration and alignment on the optical positioning space and the virtual space based on the first feature point cloud coordinate and the second feature point cloud coordinate of the preset feature point; and determining an initial fine registration error and an initial fine registration error weight according to a first point cloud coordinate set coarse registration conversion result and a second point cloud coordinate set in the coarse registration result, and performing iterative fine registration alignment on the optical positioning space and the virtual space based on the initial fine registration error and the initial fine registration error weight. A final precise registration conversion matrix is obtained; and determining a mixed reality space registration result based on the final fine registration conversion matrix, so that the efficiency and accuracy of mixed reality space registration can be improved.

The application provides a measurement method and system of optical spatial coherent structure based on Poisson bright spot experiment. The method does not have requirements on statistical characteristics of random light field, and can accurately calculate the coherent structure in real time only by shooting three groups of light intensity. In addition, the system does not need additional reference light path, and can cope with severe environmental conditions.

The invention relates to the technical field of medical artificial intelligence, and discloses a diopter detection method, device and equipment and a storage medium, and the method comprises the steps: carrying out the quality judgment of a multi-angle eye image sequence, obtaining a qualified image, carrying out the pupil positioning and region extraction of the qualified image through a pupil detection model, and obtaining a diopter detection result; and outputting a fixed-size area image taking the pupil as the center, and processing the fixed-size area image and the physiological features of the user through a diopter prediction model to obtain a diopter detection result. According to the method, the image reliability is ensured through quality judgment, the fixed-size regional image of the qualified image and the physiological features of the user are fused, the problem that the image features are separated from clinical data in a traditional method is solved, the diopter prediction model constructed by combining the optical imaging principle and the self-attention mechanism is adopted for vision prediction, and the accuracy of vision prediction is improved. Therefore, misjudgment of a general attention mechanism on the optical space relation is avoided, and limitation of fixed parameters of existing equipment is broken through.

The application discloses a kind of space division optical switching method and system based on optical mode label, the method with optical mode structure distribution characteristics as label (bridge), through optical wavefront phase multi-plane transformation, realize the arbitrary interconnection between multiple input ports / modes and multiple output ports / modes, the optical mode is various space mode, for example, Hermite-Gaussian, Laguerre-Gaussian, vortex, linear polarization, vector and so on mode;The multi-plane transformation can be loaded on spatial light modulator, for the light of each input port / mode is modulated according to the wavefront phase of space / mode phase distribution Multi-level (multiple) transformation, so that the light of each space port / mode is transformed to the space port / mode needed.The system structure is simple, can match various input / output interface, supports wide spectrum communication, compatible with wavelength division multiplexing system, can be used to constitute super large multi-dimensional optical switching system.

The application belongs to the technical field of optical fiber optical space wireless sensing, and specifically discloses a jitter-proof alignment system applied to optical fiber optical space wireless sensing detection. The system is installed at a signal demodulation end, and comprises a holder unit, a piezoelectric ceramic fine adjustment unit, and an alignment control unit. The holder unit adjusts the posture of the signal demodulation end according to a first control signal. The piezoelectric ceramic fine adjustment unit adjusts the posture of a transceiver collimator according to a second control signal. The alignment control unit acquires position coordinate data, attitude data, image data, and reflected light spot coordinate data, and calculates the first control signal and the second control signal. The outgoing light of the signal demodulation end is accurately returned to the signal demodulation end after being reflected by an optical fiber sensing end. The technical scheme of the application improves the optical path alignment accuracy to about 0.01° through holder coarse adjustment and piezoelectric ceramic fine adjustment dual driving, multi-source data fusion, and dynamic reference calibration, significantly improves the accuracy and stability of optical path alignment, and is suitable for dynamic detection scenarios of optical fiber optical space wireless sensing.

A security camera monitoring system includes: a first communication apparatus that is attached to a security camera and can transmit, via optical space communication, image data obtained by the security camera to a second communication apparatus; the second communication apparatus that can receive the image data transmitted from the first communication apparatus; and a monitoring apparatus that can communicate with the second communication apparatus and monitors whether or not there is an interference from outside with respect to the security camera, the monitoring apparatus including at least one first processor which carries out a detection process of detecting a transmission failure of the image data from the first communication apparatus to the second communication apparatus, and a generation process of generating, based on a detection result in the detection process, a signal indicating occurrence of the interference.

The application discloses a reflection type beam combining field splicing system, a multi-channel laser scanning beam combining system and a laser scanning microscope, and relates to the technical field of microscopic imaging instruments.The reflection type beam combining field splicing system comprises at least one reflection type beam combining subunit, and the reflection type beam combining subunit comprises a relay lens group and an adjustable mirror.The relay lens group comprises two 4f systems, the pupil conjugate planes of the starting points of each 4f system are different, and there is a focal point conjugate plane in the internal optical space between the two 4f systems.The adjustable mirror is arranged in the internal optical space, receives a light beam from a first light path and reflects the light beam, and simultaneously allows a light beam from a second light path to pass unobstructed.The first light path light beam reflected by the adjustable mirror and the straight-through second light path light beam complete beam combining field splicing at the focal point conjugate plane and converge at the same pupil conjugate plane.The reflection type beam combining field splicing system can simplify the light path structure and reduce the transmission loss of laser energy.

The invention discloses a heat conduction structure based on a flexible graphene film heat conduction chain and an assembly method, belongs to the technical field of heat conduction, designs a space heat conduction structure based on the graphene film heat conduction chain, and designs an end face connecting structure of the heat conduction chain, a fixing structure of a flexible section and a thermal control state. And according to the characteristics that the graphene film heat-conducting chain is easy to damage in the installation process, the interlayer is easy to loosen, the heat-conducting indium foil is easy to fold, and the pretightening force of a screw under the low-temperature working condition is attenuated, a targeted assembly process method is provided, so that the application requirements of the low-temperature optical space camera are met. The method comprises a graphene film heat-conducting chain end connection form, a graphene film middle flexible section fixing form and a heat-conducting chain thermal control implementation form, and comprises a heat-conducting chain bending and shaping method, a heat-conducting indium foil cutting and mounting method, an end connection screw fastening method, an end sealing method and a heat-conducting chain thermal control implementation method.

The camera lens protection device comprises a fixed part, an outer cover, a movable part and a shape memory alloy wire. The outer cover is provided with a concave structure and an outer cover end face, and the concave structure is concave relative to the outer cover end face. The movable piece is movably arranged relative to the fixed piece and comprises a movable body and a convex structure. The movable body is provided with a movable piece end face. The convex structure protrudes relative to the movable piece end face and is provided with a top. The shape memory alloy wire is arranged on the movable body and drives the movable body to rotate, so that the camera lens protection device is in a first state or a second state. In the first state, the convex structure is matched with the concave structure; in the second state, the top of the convex structure abuts against the outer cover end face of the outer cover, and the optical space in the lens can be increased.

The present application relates to the field of pattern recognition and image processing based on multi-modal sensor data fusion, especially to a wine grape vineyard intelligent picking management system based on multi-modal data fusion, comprising a perception device group, a computing platform and an execution unit; the computing platform is built-in with a perception module, a defect mapping module, a curvature inversion module, a manifold segmentation module and a constraint addressing module. The system synchronously collects color images and point cloud data, extracts optical space bias vectors through a defect nesting model and reversely calculates physical surface normals to fill in missing coordinates and reconstruct closed fruit grain three-dimensional geometric curves. The manifold segmentation module extracts a three-dimensional topological skeleton of the fruit stem, the constraint addressing module locates the morphological bifurcation structure and outputs picking point coordinate parameters, guiding the execution unit to complete the cutting work. The present application effectively solves the positioning deviation problem caused by inconsistent multi-modal perception under strong light.

The invention discloses an OAM mode multiplication and division operation method and system based on an optical diffraction neural network, and relates to the field of orbital angular momentum. Digital signals are represented through OAM mode coding, any 2n times of digital multiplication / division operation can be achieved, the operation function has the advantages of being high in expandability, flexible, controllable and the like, and the method and system can be applied to the field of orbital angular momentum. A basic framework is expected to be established for complex arithmetic operation in a high-dimensional optical space, and a potential solution is provided for practical application of optical digital calculation; the OAM mode serves as an operation physical dimension, mode parallel independent transformation is completed through the optical diffraction neural network to achieve OAM mode numerical value shifting, and therefore digital multiplication / division operation is completed, and the obtained output array has high mode purity.

To provide a technique capable of identifying each node while suppressing power consumption even when a plurality of nodes with which optical space communication will be performed are located at a relatively long distance.SOLUTION: A communication control device 1 includes acquisition means 11 that acquires a code sequence reflected by one of a plurality of nodes, demodulation means 12 that demodulates the code sequence using one of spreading codes with a different pattern for each node, and identification means 13 that identifies a node that corresponds to the spreading code used for demodulation among the plurality of nodes. When the pulse width of an optical signal is shorter than the sequence length of the code sequence, the acquisition means acquires a first partial sequence that is part of the code sequence generated while the node is receiving one optical signal, acquires a second partial sequence that is part of the code sequence generated while the node is receiving another optical signal, and generates a code sequence by combining the second partial sequence after the first partial sequence.SELECTED DRAWING: Figure 9

The application discloses a full-dimension photonic spin Hall space differential imaging method, comprising the following steps: inputting an arbitrary polarization state light field into a first lens to perform Fourier transform to obtain a frequency domain light field; inputting the frequency domain light field into a one-half wave geometric phase liquid crystal polarization grating to perform polarization separation, to obtain a first left-handed circularly polarized light and a first right-handed circularly polarized light; inputting the first left-handed circularly polarized light and the first right-handed circularly polarized light into a one-quarter wave geometric phase liquid crystal polarization grating and a second lens to perform polarization separation and inverse Fourier transform respectively, to obtain a space domain light field; and inputting the space domain light field into a polarizer to perform polarization detection to obtain a differential image. The application can effectively generate optical differential effects of three dimensions of amplitude, phase and polarization from the photonic spin Hall effect, and realizes full-dimension optical space differential processing of an image.

The utility model discloses a laser device for emitting illumination light, which comprises a packaging shell, a heat sink arranged in the packaging shell, a laser chip arranged on the heat sink and used for emitting laser, and a fast axis collimating mirror, a wavelength conversion powder sheet and a light emitting lens which are sequentially arranged along a light path of the laser, the fast axis collimating mirror is used for reducing the divergence angle of laser in the fast axis direction, the wavelength conversion powder sheet is used for converting at least part of the laser into excited light, the light emitting lens is used for emitting mixed light of the excited light and unconverted laser to form illumination light, and the packaging shell is provided with a through hole used for emitting the illumination light. A through hole is formed in the packaging shell, the wavelength conversion powder sheet and the light emitting lens are arranged in the through hole, conductive pins are arranged on the side face of the packaging shell, the conductive pins and the heat sink are arranged on different faces of the packaging shell respectively, and the distance between the fast axis collimating lens and the laser chip is smaller than 0.3 mm. The laser device for emitting the illumination light is good in illumination effect and compact in structure, and realizes thermoelectric-optical space separation.

The application discloses a remote sensing crop recognition method and system based on multi-modal time sequence attention and a medium, relates to the technical field of remote sensing image processing; a multi-modal time sequence attention fusion recognition model is constructed based on an improved Attention UNet network architecture, optical spatial features and SAR spatial features are extracted based on an optical time sequence dataset and a SAR time sequence dataset respectively; a multi-modal time sequence matching mechanism is introduced, multi-modal spatial features are dynamically aligned and fused according to observation dates, and a lightweight time sequence attention encoder is combined to capture time sequence dependence, so that crop phenology evolution rules are deeply mined, and finally, end-to-end high-precision and rapid crop recognition is realized.

The optical space communication transmitting terminal (2) is provided with: transmitters (24a to 24d) configured in a plurality of groups, which transmit optical signals of mutually different wavelengths; combiners (23a, 23b) provided for each group, which output wavelength multiplexed optical signals by combining the optical signals transmitted from the transmitters (24a to 24d) belonging to the group; optical amplifiers (22a, 22b) provided for each group, which amplify the wavelength multiplexed optical signals; and optical antennas (21a, 21b) provided for each group, which transmit the amplified optical signals to space, the optical antennas (21a, 21b) of each group transmitting the optical signals to the same direction.

This application relates to a three-dimensional microscopic imaging device and its imaging method. The device includes an illumination source module that emits excitation light, filters and focuses the excitation light, amplifies the filtered and focused excitation light at a preset magnification, and performs relay processing to obtain a first relayed excitation light. A scanning module deflects the first relayed excitation light based on a first voltage signal, relays the deflected excitation light to the objective lens to obtain a second relayed excitation light, and focuses the second relayed excitation light onto a target sub-field of view to excite the sample in the target sub-field of view. The scanning module collects the fluorescence signal emitted by the sample and introduces the fluorescence signal into the imaging system. An imaging module performs optical spatial spectrum multiplexing imaging based on the spatial spectrum information of the fluorescence signal, and a camera records the optical spatial spectrum multiplexing imaging results. This solves the problem of related technologies being unable to perform rapid three-dimensional microscopic imaging of samples distributed over a large field of view and large volume.