48 results about "Photon transmission" patented technology

The invention discloses a pain treatment method based on infrared photothermal coupling, and belongs to the technical field of medical engineering. Comprising the following steps: acquiring physiological feature data, pathological feature data and optical feature data of a patient, and acquiring initial equipment parameters of the intelligent infrared photothermal treatment device; the method comprises the following steps: constructing an individualized photo-thermal response prediction model through Monte Carlo photon transmission simulation in combination with finite element heat conduction analysis, predicting a therapeutic effect score and an optimal parameter combination by using a deep neural network model based on a Transform architecture, generating an individualized temperature-time therapeutic curve, and determining initial illumination parameter configuration; controlling the intelligent infrared photothermal treatment device to start a treatment process according to the initial illumination parameter configuration; and according to the comprehensive biomarker score and in combination with a real-time analysis result of the neural network processing module, the output power, the pulse duty ratio and the irradiation mode of the infrared light source are automatically adjusted through the infrared light source control module.

This invention relates to the field of photoelectric detection and performance monitoring technology, specifically to a real-time performance verification system for a safety light curtain based on pulse feedback. The system performs the following steps: based on the changes in the effective photon count of each pulse of the safety light curtain, the effective photon count of pulses whose decrease in effective photon count is due to transient interference is smoothed to obtain a photon transmission efficiency time series; based on the photon transmission efficiency time series, a dynamic derivative curve of the pulse edge is established, and pulses within a period where the core parameter of the dynamic derivative curve at the pulse edge continuously changes in a second-order direction towards the target direction are identified as abnormal pulses; each key time node of the abnormal pulse is determined; based on the changes in the differences between each key time node, the fault cause corresponding to the abnormal pulse is located, thus improving the accuracy of real-time performance monitoring of the safety light curtain.

The application discloses a monolithic integrated self-powered luminescent solar concentrator-electrochromic integrated device and a preparation method thereof, and has a layered structure, which is, from bottom to top, a conductive glass substrate, an electrochromic layer, a transparent sealing tape, a fluorescent gel electrolyte layer, a transparent sealing tape, an electrochromic layer and a conductive glass substrate. The monolithic integrated self-powered luminescent solar concentrator-electrochromic integrated device can realize reversible conversion between bleached state and colored state within 100 seconds under natural sunlight, and realize dynamic adjustment of the transmittance of incident sunlight. The core functional layer of the device is a fluorescent gel electrolyte with high luminescent efficiency, and the photoluminescence quantum yield can reach 74.9%, so that the device has excellent light capturing and photon transmission performance, and can realize high-efficiency photoelectric conversion by coupling a solar cell at the edge of the device to provide power for the reversible driving of the electrochromic device. The application realizes self-powered electrochromism which can be applied to building glass curtain walls.

In some implementations, a photonic transmission structure includes a first cladding structure; a first active structure disposed over the first cladding structure; and a second cladding structure disposed over the first active structure. The first active structure includes a non-alkali, oxide solution that includes a cation that is niobium.

The application belongs to the technical field of solar cells, and relates to a CdTe thin film cell with a window layer of a multilayer cyclic composite structure and a preparation method thereof. The CdTe thin film cell comprises a glass substrate, a transparent conductive layer, a buffer layer, a window layer, an absorption layer, a back contact layer and a metal electrode layer which are arranged in layers. The window layer is of a multilayer cyclic composite structure, and the material of a cyclic unit comprises a metal chalcogenide compound. The window layer with the multilayer cyclic composite structure optimizes a photon transmission path, avoids the generation of pinhole phenomenon of the window layer, prevents short circuit and current shunt of the cell, and significantly improves the conversion efficiency of the solar cell.

The application discloses an imaging method for fusing photon weight and diffuse light brain tissue blood oxygen concentration change quantity and related products, and relates to the technical field of biological tissue blood oxygen imaging. The method comprises the following steps: acquiring experimental data obtained by irradiating a measured tissue with light sources of two wavelengths; performing the following calculation on the experimental data corresponding to each wavelength of the light source: calculating the average photon transmission path of the kth light probe combination in the ith voxel unit by using a formula; calculating the photon weight of the kth light probe combination in the ith voxel unit by using a formula; calculating the change quantity of the tissue absorption coefficient of the ith voxel unit by using a formula; and finally calculating the change quantity of the concentrations of oxyhemoglobin and deoxyhemoglobin by using the calculation data obtained by the two wavelengths. The application proposes a method for fusing photon weight, and by means of weight calculation, the accurate brain tissue blood oxygen concentration change quantity can be obtained by using a small amount of S-D combination photon signals.

The invention relates to a method for the temporal synchronization of detection events of two receivers for quantum communication, preferably for quantum key exchange (QKD), comprising the generation of entangled photon pairs in a source, transmission of one individual photon of each entangled photon pair to each receiver, detection of the individual photons at each receiver and storage of the detection events, and the temporal synchronization of the detection events of the two receivers, preferably for quantum key exchange (QKD). Essentially, during the generation of the entangled photon pairs for the temporal synchronization of the detection events of the two receivers, the emission rate of the individual photons of the entangled photon pairs in the source is changed over a time interval Δtmod, and the change in the emission rate of the individual photons is detected at both receivers for the purpose of synchronizing the detection events.

A lighting device (ED) comprises at least: - a housing (BB1) including a rear wall (PRB) and two first side walls (PLB1-PLB2) extending forward from the rear wall (PRB) and defining with the latter a first cavity (CB) housing a light guide (GL1) delivering photons onto a front face (FV1), and - a protective glass (GP1) coupled to the housing (BB1) and including a front wall (PVG) oriented towards the front face (FV1) through which the delivered photons exit, and second side walls (PLG1-PLG2) extending backward from the front wall (PVG) and defining with the latter a second cavity (CG) housing at least the first side walls (PLB1-PLB2), after they have been respectively fitted with tension by the second side walls (PLG1-PLG2) and interposed glue. Figure 3

This invention belongs to the field of quantum dialogue and discloses a one-step quantum dialogue method. In this method, communicator A prepares a large number of identical polarization-spatial hyperentangled states and sends one photon from each hyperentangled state to communicator B through a quantum channel, establishing a hyperentangled quantum channel between the two parties. After confirming the security of the photon transmission process, both parties encode the photon pairs according to the information to be transmitted. Then, by running nonlocal Bell state measurements and publishing the detector responses, both parties can read the information transmitted by the other, thus achieving bidirectional quantum communication, i.e., quantum dialogue. Compared with existing quantum dialogue protocols, this invention reduces the number of photon transmissions in the channel from two to one, simplifying experimental operations and effectively reducing the photon loss rate, which can effectively promote the practical application of quantum dialogue.

In some implementations, a photonic transmission structure includes a first cladding structure; a first active structure disposed over the first cladding structure; and a second cladding structure disposed over the first active structure. The first active structure includes a non-alkali, oxide solution that includes a cation that is niobium.

A detector with reduced fluorescence range noise is disclosed. This paper proposes a device comprising: a structure defining a detector surface configured to support a biological or chemical substance; and a sensor array including a light sensor and circuitry for transmitting data signals using photons detected by the light sensor. The device may include one or more features for reducing fluorescence range noise in the detection band of the sensor array.

The invention provides a security enhancement method and system for a computer communication link, and belongs to the field of communication security. The method comprises the following steps: receiving a starting point and an ending point of a communication link to be laid, and matching a first virtual laid communication link set; traversing the first virtual layout communication link set, and extracting a quantum signal transmission influence parameter set; searching a same-mode communication link sample based on the quantum state coding library, and counting a first single-photon transmission bit error rate set; and carrying out minimum bit error rate sorting on the first virtual layout communication link set to obtain a selected layout communication link, and sending the selected layout communication link to a user side to execute recommendation. The technical problems of too high single photon transmission bit error rate and poor communication stability caused by lack of analysis of transmission influence parameters during quantum communication link layout in the prior art are solved, and the purposes of reducing the bit error rate of the quantum communication link and improving the communication stability by optimizing and sorting the quantum signal transmission influence parameters are achieved. And the transmission stability and reliability of quantum communication are improved.

The present disclosure proposes a quantum satellite communication performance adjustment method based on the heliotropism of sunflowers, including establishing a quantum satellite communication system model in a snowfall environment; the quantum satellite communication system model includes an analog quantum satellite communication system; analyzing the influence of snowfall intensity and quantum satellite communication elevation angle on the quantum satellite communication link in the quantum satellite communication system, obtaining the attenuation result of the quantum satellite communication link in the snowfall environment, and the relationship between the photon transmission distance of the quantum satellite and the communication elevation angle; according to the attenuation result of the quantum satellite communication link and the relationship between the photon transmission distance of the quantum satellite and the communication elevation angle, using the heliotropism principle of sunflowers, the optimal average photon number performance adjustment function relationship of each pulse in the quantum satellite communication system in the snowfall environment is obtained under the decoy state protocol. The present disclosure can effectively cope with the influence of snowfall and small elevation angle on the performance of quantum satellite communication.

The invention discloses a method for acquiring dark current activation energy of pixels before and after irradiation of an image sensor. The method comprises the following steps: S1, calculating a conversion gain according to a photon transmission curve before and after irradiation of an image sensor; s2, dark current images before and after irradiation of the image sensor are collected, and dark current values at different temperatures are calculated through conversion gain; and S3, pixel dark current activation energy is calculated according to the dark current value. According to the method provided by the invention, the dark current acquisition temperature ranges of the image sensors of different irradiation types before and after irradiation are determined without covering a relatively large temperature range and acquiring dark current activation energy data of more acquisition temperature points, so that the dark current activation energy testing speed and accuracy of the image sensors after irradiation can be remarkably improved; the method is especially suitable for batch screening of the image sensors under the condition that the irradiation dose is large and the pixels of the image sensors are not subjected to special anti-irradiation reinforcement, and the testing efficiency can be greatly improved.

An optical unit (OU), for example for a vehicle, comprises a housing (H) and a protective lens (PL) defining a space in which at least one optical module (OM1) is installed. This module delivers photons upstream of the protective lens (PL) to perform a photometric function that complies with regulations. The optical unit (OU) also includes, within a zone encompassing its protective lens (PL), at least one sub-zone (SZ11) designed to be selectively of a chosen crystalline or non-crystalline color, while still allowing the photometric function to comply with regulations. Figure 2

A lighting system (LS) equips a vehicle and comprises: - a photon-generating source, - a first light guide (GL1) receiving the generated photons and delivering them to a first front face (FV1), - a second light guide (GL2) receiving the photons from the first front face (FV1) on a rear face (FR2) and delivering them to a second front face (FV2) to perform a photometric function, - a third light guide (GL3) interposed between the first (GL1) and second (GL2) light guides, coupled to the rear face (FR2), and capable of transferring photons delivered to the first front face (FV1) into the second light guide (GL2), and - a mask (MD) comprising an aperture (O) through which the second light guide (GL2) passes, masking the third light guide (GL3), and aligned with the latter. Figure 2

An optical unit (OU) equips a vehicle and comprises a reflector (RU) produced by molding and having: - a first front face delimiting concave spaces (CS) separated by an intermediate space (IS) and each housing a light guide delivering photons to a second front face participating in a photometric function, and - in at least one predefined sub-part (SP) at least one stiffening rib (SR) extending at least on a rear face (FR1) opposite its first front face, at least between the concave spaces (CS), in order to stiffen this sub-part (SP) while preventing deformation during a demolding operation. Figure 3

The invention provides a particle size measurement method and system for processing scattering image distortion of a cylindrical sample pool, and the method comprises the steps: S1, carrying out the laser scattering measurement of a two-phase system of the cylindrical sample pool, obtaining a scattering image, dividing a plurality of axial band regions based on the optical energy distribution of the scattering image in the axial direction, obtaining the experimental scattering light energy distribution data of the band regions, and taking the data as inversion data. S2, establishing a three-dimensional laser scattering model, simulating a photon transmission process in the cylindrical sample cell, judging a band region to which each photon belongs according to the coordinate of each photon on the detector so as to obtain simulated scattered light energy distribution data corresponding to a certain particle size, and calculating simulated scattered light energy distribution data corresponding to different particle sizes to obtain an inversion coefficient matrix, the inversion coefficient matrix considers the phenomenon of image distortion caused by light beam convergence and divergence due to the curved wall surface of the cylindrical sample cell. And S3, importing the inversion data and the inversion coefficient matrix into an optimal inversion algorithm, and solving to obtain particle size distribution.

A lighting system (LS) is fitted to a vehicle and comprises: - an electronic board (EB) with N photon sources (SP1-SP2) generating photons, with N ≥ 2, - N light guides (GL1-GL2), each designed to receive on a rear face (FR2, FR1) the photons generated by an associated photon source (SP1, SP2) and to deliver these received photons on a front face (FV1, FV2) to perform one of N photometric functions, and - a chassis (CC) that permanently holds the N light guides (GL1-GL2) in N predefined positions arranged vertically, and the electronic board (EB) in a predefined position in which the N photon sources are respectively placed in predefined ways opposite the rear faces (FR1-FR2) of the N light guides (GL1-GL2). Figure 3

The invention provides a high-resolution non-vision-field imaging method, and relates to the technical field of optical imaging and image processing, and the method comprises the steps: 1, constructing a non-vision-field transient image forming model which accords with the photon transmission characteristics in a real scene, according to the model, the influence of system time jitter, data acquisition equipment and background noise factors on a non-vision field transient measurement result is fully considered; step 2, optimizing a light cone transformation reconstruction algorithm by using two filtering algorithms of a maximum value and a self-adaptive non-local mean value combined with edge sharpening; and step 3, substituting the collected transient data of the non-vision field target into the non-vision field transient image constructed in the step 1 to form a model, and reconstructing the target obtained by the model by using the light cone transformation reconstruction algorithm optimized in the step 2 to obtain a high-resolution non-vision field imaging result. Compared with a traditional non-vision-field imaging system, the non-vision-field imaging system has the advantages that the signal-to-noise ratio can be effectively improved and the number of required sampling points can be reduced while high spatial resolution of non-vision-field imaging is realized.

A quantum switching system that improves the efficiency of a quantum network, a control method thereof, and a program are provided. [Solution] A quantum switching system 1 that distributes two photons in a quantum entangled state to a photon emission section 100 and a photon input section 200, and includes: a plurality of input ports, a plurality of output ports, a photon transport path 10 that connects the plurality of input ports and the plurality of output ports; a switching element arrangement section 20 that is arranged across two adjacent paths of the photon transport paths 10 and has a plurality of two-input, two-output switching elements that switch the photon travel path; and a control section 30 that controls the switching elements to pair photons input to each of the plurality of input ports into any two pairs and output them to two adjacent pairs of output ports.

The invention relates to an integrated photon transmission circuit (1) comprising: a laser source (LS) for generating optical radiation and comprising a grating defining a transmission wavelength (LBragg) and a first amplification medium (A1) having a first photoluminescence wavelength (L1); and a semiconductor optical amplifier (SOA) comprising a second amplification medium (A2) having a second photoluminescence wavelength (Lgain). According to the invention, the laser source (LS) and the optical amplifier (SOA) are configured such that: at a first temperature (T0), the transmission wavelength (Lbrag) is closer to the first photoluminescence wavelength (L1) than the second wavelength (Lgain); and at a second temperature (T1), the transmission wavelength (Lbrag) is closer to the second photoluminescence wavelength (Lgain) than the first wavelength (L1).

This invention discloses a pixelated scintillator screen based on a Si-SiO2 array (SOA), its fabrication method, and its applications, belonging to the field of X-ray imaging materials technology. This scintillator screen uses a low-dimensional perovskite halide Cs5Cu3Cl6I2 single crystal as the scintillator medium. The low-refractive-index SiO2 layer enables total internal reflection guided by vertical photons, while the Si substrate simultaneously provides high X-ray transmittance and visible light absorption, effectively reducing optical crosstalk. Through a vacuum-assisted melt infiltration process, the Cs5Cu3Cl6I2 single crystal is uniformly filled into the SOA channels, forming a well-confined scintillator structure that suppresses lateral scattering and enhances longitudinal photon transmission. Compared with traditional thin-film scintillators, the SOA-based design significantly improves imaging performance, achieving a resolution of 20.10 lp·mm. ‑1 Spatial resolution and 35 nGy·s ‑1 The method achieves the lowest detectable dose. Furthermore, the fabrication process is highly scalable, allowing for the flexible construction of scintillator arrays with customized pixel sizes and layouts. This approach provides a promising strategy for achieving next-generation X-ray imaging with both high resolution and low dose sensitivity.

The invention discloses an optical fiber light cone-CMOS coupling system photon transmission mechanism modeling method, and belongs to the technical field of physical simulation, and the method comprises the steps: constructing an optical fiber light cone-CMOS coupling system model, and carrying out the parameter initialization; wherein the optical fiber light cone-CMOS coupling system comprises a light source, an optical fiber light cone and a CMOS sensor; generating and tracking light rays by using the model, and carrying out a light ray-object intersection simulation test; and based on a light-object intersection simulation test result, calculating the transmittance of the optical fiber light cone and carrying out statistics on the spatial distribution and energy distribution conditions of photons on the surface of the CMOS sensor. According to the invention, the influence of different taper ratios and cone lengths on the optical transmission characteristics of the optical fiber cone and the photon distribution rule on the CMOS sensor can be explored, so that a theoretical basis and method support are provided for optimizing the structural design of an optical fiber cone-CMOS sensor coupling system and improving the coupling efficiency.

The application belongs to the technical field of microwave photonics, and particularly relates to a microwave photon transmission system, wherein a first wavelength power signal output by a first laser is obtained through an optical emission device, the first wavelength power signal is a power signal subjected to SBS suppression; an optical amplification device is connected with the optical emission device, and is used for amplifying the power of the first wavelength power signal; an optical relay device is connected with the optical amplification device, and is used for performing optical power compensation on the first wavelength power signal and outputting a first wavelength power compensation signal; and an optical receiving device is connected with the optical relay device, and is used for demodulating the first wavelength power compensation signal into an electrical signal. The application can effectively suppress SBS, thereby suppressing phase jitter caused by temperature change, strain change and the like in microwave photon transmission, suppressing system deterioration caused by SPM and EPM, and being beneficial to improving the performance of the microwave photon transmission system.

The invention provides a networked multifunctional intelligent lock system, and relates to the technical field of intelligent locks, the networked multifunctional intelligent lock system comprises a communication module which exchanges data with intelligent equipment through a quantum encryption communication protocol, the quantum encryption communication protocol can effectively prevent external interference and network attacks, high-security encryption transmission is provided, and the communication module is connected with the intelligent equipment; according to the system, the security of data is ensured, the confidentiality and integrity of the data are ensured, potential safety hazards in traditional Wi-Fi and Bluetooth protocols are avoided, and a multi-identity authentication module comprises fingerprint recognition, face recognition and dynamic password technologies. According to the networked multifunctional intelligent lock system, the quantum key distribution technology is combined, so that the intelligent lock system can effectively prevent external interference and network attacks in the data exchange process. According to the quantum encryption protocol, secure sharing of encryption keys is realized through photon transmission, and encryption independence of each data packet is ensured by adopting a one-time pad scheme, so that potential safety hazards existing in traditional Wi-Fi and Bluetooth protocols are avoided.

A boron layer may be formed as a passivation layer in a recess in which a deep trench isolation structure (DTI) structure is to be formed. The boron layer results in formation of a boron-silicon interface between the DTI structure and a photodiode of a pixel sensor included in a pixel array. The boron-silicon interface functions as a diode junction, which resists penetration of photons into the DTI structure. This reduces and / or minimizes photon transmission through the DTI structure, which reduces and / or minimizes optical crosstalk between pixel sensors of the pixel array.

An optical unit (OU) equips a vehicle and comprises: - a light guide (LG) delivering, to a terminal section (TS) having a first chosen shape, photons from a first photon source (PS1) participating in a first photometric function, and - a first wall (P1) having a front face (FV1) in front of which the terminal section (TS) is installed, and forming a chosen angle with a second wall (P2) having a reflective face (RF) such that this terminal section (TS) is positioned opposite the reflective face (RF) so that the latter (RF) creates an image of the first chosen shape, having a second chosen shape, when the terminal section (TS) delivers the photons. Figure 2

The invention discloses a tunable asymmetric delay attack method and device in the technical field of quantum communication and time synchronization. According to the tunable asymmetric delay attack method, an adjustable delay module comprising an optical circulator and an electric optical delay line is inserted into a photon transmission path of a quantum time synchronization system, and a bidirectional optical path controllable delay symmetric structure is constructed; the main controller configures parameters according to a target system type, generates and injects three asymmetric delay signals of a jump type, a peak type and a gradual change type, and can dynamically adjust parameters such as attack amplitude and duration in real time so as to optimize an attack effect. According to the method, the limitation of the existing static delay attack is overcome, the multi-mode and customizable attack of the quantum time synchronization system is realized by dynamically controlling the delay parameter in the bidirectional light path, and the method has high concealment and strong pertinence.