924 results about "Optical radiation" patented technology

Various wearable health monitoring devices are described herein. Some implementations include a housing including a front side and a back side configured to face tissue of the wearer when the device is worn; and a sensor assembly positioned by the back side of the housing. The sensor assembly can include emitters and detectors positioned on a surface of a substrate and a frame positioned adjacent to the surface of the substrate and configured to inhibit transmission of optical radiation through the frame. The frame can comprise an emitter chamber housing the emitters; and one or more detector chambers housing the one or more detectors.

The invention relates to the technical field of remote sensing monitoring, in particular to a remote sensing image ocean green tide monitoring method and system fusing physical prior and spatio-temporal evolution. The method comprises the following steps: acquiring a multi-modal remote sensing monitoring image; performing multi-modal feature extraction on the acquired image, wherein the multi-modal feature extraction comprises spectral reflectivity feature extraction, ocean dynamics feature extraction and feature alignment and unified representation; establishing a physical prior of a green tide characteristic wave band by using an ocean optical radiation transmission model; constructing a dynamic space-time diagram based on the extracted multi-modal features to obtain a node global feature vector and a dynamic adjacency matrix; carrying out adaptive graph convolution feature coding based on physical prior and a dynamic space-time diagram; through fusion of multi-spectral images of multiple platforms such as satellites and unmanned aerial vehicles and ocean dynamic data and combination of atmospheric correction and wave band resampling, consistency processing and high-precision extraction of multi-source features are realized, and comprehensiveness and reliability of green tide feature recognition are remarkably improved.

The invention relates to the crossing field of biothermodynamics and dynamic environment control, and discloses a space thermal microclimate multi-target regulation and control method, device and system, a medium and a product. The method comprises the following steps: acquiring physiological parameters (including effective dressing thermal resistance and local sweat gland density of posture correction) of a passenger, environment space-time parameters and light environment parameters through a biological characteristic sensor, an environment sensor and an optical sensor; constructing a dynamic human body thermal comfort model library, and adopting a feature coding-parameter decoding mechanism to match a target thermal comfort model; generating a hierarchical regulation strategy based on the difference between the local comfortable temperature and humidity interval and the real-time thermal environment sensing parameter; and the refrigerant circulation system, the fluid circulation system and the optical radiation system are cooperatively controlled to realize local microclimate regulation and control. According to the method, the problems of inaccurate thermal comfort modeling and low multi-system cooperation efficiency in a transient environment are solved, the energy efficiency ratio is improved, and the comfort of passengers in a cabin is remarkably improved.

An optical device includes a substrate and a single-mode optical waveguide disposed on the substrate and having a first geometrical width chosen to guide optical radiation in a first optical mode within a given wavelength range through the single-mode optical waveguide. An optical ring waveguide is disposed on the substrate and optically coupled to the single-mode optical waveguide, the optical ring waveguide having a second geometrical width wider than first geometrical width and configured to maintain therewithin optical radiation in the given wavelength range in a second optical mode different from the first optical mode.

The invention discloses a lubricating oil identification method, device and equipment based on an infrared spectrum and a medium, and relates to the technical field of lubricating oil identification, the method comprises the following steps: establishing a lubricating oil product characteristic spectrum library; the lubricating oil product characteristic spectrum library comprises a plurality of standard infrared spectrums of different brands of lubricating oil; after the to-be-identified lubricating oil sample is radiated by the generated target interference light, an interference light signal penetrating through the to-be-identified lubricating oil sample is collected; converting the interference light signal into an electric signal; generating an infrared spectrogram corresponding to the to-be-identified lubricating oil sample based on the electric signal; and comparing the infrared spectrogram corresponding to the to-be-identified lubricating oil sample with the standard infrared spectrum in the lubricating oil product characteristic spectrum library to obtain an authenticity identification result of the to-be-identified lubricating oil sample.

The present invention relates to a beam guiding device (1) for guiding signal light radiation (A), comprising at least one fibre inlet element (11) which is designed to receive the signal light radiation (A), comprising at least one fibre outlet element (12) which is designed to emit the signal light radiation (A), and comprising a plurality of fibre elements (10) which are fixedly connected at one end to the fibre inlet element (11) and at the opposite end to the fibre outlet element (12) and are designed to guide the signal light radiation (A) from the fibre inlet element (11) to the fibre outlet element (12).

An optoelectronic apparatus includes an array of emitters configured to emit beams of optical radiation. An optical substrate is mounted over the array. An optical metasurface is disposed on the optical substrate and configured to collimate and split each of the emitted beams into a respective group of collimated sub-beams, and to direct the collimated sub-beams toward a target to form a pattern of spots on the target.

The invention relates to the technical field of infrared sensors, in particular to a monolithic integrated MEMS out-of-plane thermopile chip and a preparation method thereof, and the thermopile chip comprises a substrate, and a bottom electrode, a thermocouple array, a top electrode and an optical radiation absorption layer which are sequentially arranged on the substrate; the thermocouple array is vertically arranged on the bottom electrode; the thermocouple array comprises a plurality of thermocouple pairs, and each thermocouple pair comprises an N-type thermocouple and a P-type thermocouple; the N-type thermocouple and the P-type thermocouple form a current and heat flow loop in an electric series connection and heat parallel connection mode. According to the invention, the bismuth telluride-based thermoelectric material with low thermal conductivity and high Seebeck coefficient difference is used as the thermocouple material of the out-of-plane thermopile chip, the heat conduction path of the out-of-plane thermopile chip is more direct, the temperature difference in the vertical direction can be directly utilized, and the higher response speed and high sensitivity are expected to be realized due to the more efficient thermal gradient.

The invention discloses iridium series mixed metal oxide titanium anode plate welding equipment, and relates to the technical field of welding equipment, the iridium series mixed metal oxide titanium anode plate welding equipment comprises a welding rack, a welding mechanism and an anode plate clamp, and the welding rack comprises adjustable supporting legs. The equipment stability is ensured through the adjustable supporting feet and the workbench structure, the anode plate clamp is matched with the first servo motor and the second servo motor on the portal frame to drive the threaded rod and the adjusting sliding block structure, the welding mechanism can be accurately positioned on the X / Y axis, flexible adjustment of a three-dimensional space welding path is achieved in combination with Z-axis downward pressing control of the telescopic cylinder, and the welding efficiency is improved. The integration of the process database and the touch display screen simplifies the parameter calling process, the microcontroller feeds back welding data in real time through the visual monitoring assembly, the consistency of the welding quality is effectively guaranteed, the protection assembly reduces the harm of intense light radiation to operators, and then the automation efficiency and safety are improved. And the titanium anode plate welding efficiency and the finished product qualification rate are remarkably improved.

Apparatuses, systems and methods for all-optical computing are disclosed. An optical computing apparatus includes a nonlinear optical crystal, at least one light source, and a detector. The at least one light source is configured to spatially modulate vectors of operand values onto coherent optical radiation and to direct the spatially modulated coherent optical radiation into the nonlinear optical crystal, thereby exciting propagating modes in the nonlinear optical crystal corresponding to a computational result of linear and nonlinear operations performed over the vectors. The detector is coupled to receive and sense the coherent optical radiation that has propagated through the nonlinear optical crystal so as to decode the computational result.

The invention relates to the technical field of image generation, and particularly provides a digital human generation and streaming transmission method and system, and the method and system are based on an ER-NERF algorithm, and comprise the following steps: S1, carrying out the depth estimation and optical radiation field reconstruction of multi-view image data, so as to generate a realistic 2.5 D digital human model; s2, in a data transmission stage, the system pushes the preprocessed model parameters and texture information to a user terminal in a streaming media format in real time; and S3, at a user terminal, the system performs real-time analysis and reconstruction on the received data stream through a decoding module, and dynamic rendering and interactive display of the digital human are completed. Compared with the prior art, the method has the advantages that the terminal computing pressure can be reduced, cross-platform real-time interaction and efficient rendering are ensured, and the application requirements of virtual content production, remote interaction and immersive experience are met.

The invention belongs to the technical field of solar cells, and particularly relates to a TBC solar cell capable of improving UV attenuation and a preparation method thereof, and a cell assembly. During light injection, the light radiation intensity difference of a back surface and a front surface is controlled within the range, the front surface radiation intensity is greatly reduced, and the light radiation intensity of the front surface is strictly controlled within a relatively low range, so that the light radiation intensity of the front surface is greatly reduced. The release of hydrogen in a front passivation film to the crystalline silicon surface and the substrate during light injection is reduced, so that the hydrogen passivation level of the front surface is reduced, and the interface silicon-hydrogen bond content is reduced; meanwhile, the light radiation intensity far greater than that of the front side is provided, the light injection for irradiating the back side is increased, and the rapid hydrogen passivation of the back side is facilitated, so that the uncontrollable heat influence caused by high light irradiation is reduced by limiting the light irradiation intensity of the front side in a lower range, and the release of hydrogen in a front side passivation film to the crystalline silicon surface and the substrate during light injection is reduced; therefore, the UV attenuation of the battery is reduced.

The present invention relates to a device for measuring a line current. Said device comprises at least three sensor elements having paramagnetic centres, a pump-radiation source, an optical system, and at least three photodetectors which function as part of receiving systems and are each associated with a sensor element. In addition, the device contains two magnetic field sources which generate different bias magnetic fields for each sensor element. The pump-radiation source emits pump radiation into the optical system, which distributes the pump radiation to the sensor elements and thereby irradiates the paramagnetic centres with the pump radiation. These centres emit fluorescence radiation, the intensity and phase shift of which depend on the AC drive signal of the evaluation and control device and on the magnetic flux density acting upon them. The fluorescence radiation is separated from the pump radiation by the optical system and guided onto the photodetectors. The evaluation and control device generates a single-frequency sinusoidal AC drive signal having a frequency of 22 MHz (-4 MHz / +7 MHz), or within a range of 18 MHz to 29 MHz. The lock-in amplifiers are coupled to the sensor elements and evaluate the output signal of the photodetectors with respect to the AC drive signal in order to produce measurement values. Based on these measurement values, the evaluation and control device determines an estimated value for the magnitude of the line current in the line.

The invention relates to the technical field of nervous system dysfunction, in particular to a nerve regulation and control system for degenerative disease treatment based on multi-modal physiological feedback, which comprises a central processing unit, an optical radiation applicator, a mechanical vibration applicator, an integrated biological signal sensing array and a man-machine interaction module, cooperative stimulation is applied by using a multispectral light source and a broadband vibrator, and multi-dimensional physiological signals such as heart rate variability, myoelectricity, galvanic skin and the like are monitored in real time through a sensor array. A multi-parameter adaptive control algorithm built in the central processing unit can dynamically and intelligently adjust stimulation parameters based on the feedback signals to form an accurate personalized treatment closed loop. Meanwhile, the safety monitoring module based on the biological thermal model ensures the safety boundary of the treatment process. According to the invention, intelligent, self-adaptive and non-invasive treatment of nerve dysfunction is realized.

The invention provides a shallow sea water depth inversion method and system based on a multi-angle optical radiation transmission model, and relates to the technical field of remote sensing space information. The method comprises the following steps: on the basis of a water body biological optical model, constructing a shallow sea water depth inversion model in combination with a water body and water bottom optical radiation transmission process; and according to the obtained multi-angle satellite remote sensing observation data, calculating and obtaining shallow sea water depth information by using the shallow sea water depth inversion model. According to the invention, by fusing multi-angle satellite remote sensing observation data and a physical model and comprehensively considering water body absorption, scattering and bottom reflection characteristics, a high-robustness and high-precision shallow sea water depth inversion method and system are constructed. The method has adaptive capacity to a complex optical environment in a shallow water area, can realize large-range and high-precision water depth inversion, provides a new technical means for shallow water depth measurement, and has wide application prospects.

An optoelectronic apparatus includes an array of emitters configured to emit beams of optical radiation. Refractive optics focus the emitted beams with a first optical power. An optical metasurface splits the focused beams to form a pattern of spots and applies a vergence to the spots with a second optical power so as to project the pattern of spots toward a target.

The present invention relates to the technical field of inorganic multi-color coatings, and specifically relates to a preparation method and apparatus for an inorganic multi-color coating, and a use. The preparation method comprises the following raw materials: base paint: water, cellulose, a defoaming agent, a dispersing agent, a wetting agent, a luminescent material, an inorganic hybrid emulsion, an odorless pH regulator, and a bactericide; granulation liquid: water, a bactericide, xanthan gum, protective colloid powder, an odorless pH regulator, nanocellulose, and a defoaming agent; and a continuous phase emulsion: an inorganic hybrid emulsion, a bactericide, inorganic gel, deionized water, an odorless pH regulator, a thickening agent, and a defoaming agent. In the present invention, a mixture of CaAl2O4 calcium aluminate and BaAlO4 barium aluminate is added to serve as a luminescent material, the luminescent material can absorb and store solar energy by means of a specific mode when exposed to sunlight during the daytime, and at night, the internally stored energy is converted into optical radiation to be released, thereby realizing a light-emitting effect and realizing the luminous function of the coating.

An optical sighting device includes an eyepiece positioned to receive optical radiation along an optical axis to produce a real exit pupil located remote from the eyepiece. The real exit pupil is positioned at an eye relief distance from the eyepiece along the optical axis. A digital signal processor determines an axial distance from the eyepiece to an eye positioned proximate the real exit pupil along the optical axis. An aperture stop is centered along the optical axis to direct the optical radiation in a direction of the eyepiece. The eye relief distance is based at least in part on a position of the aperture stop along the optical axis. The optical sighting device further includes an eye relief actuator to translate the aperture stop along the optical axis to null a spatial offset between the eye relief distance and the axial distance to the eye.

The invention provides a light generating system (1000) comprising one or more light generating devices (100), wherein each of the one or more light generating devices (100) are configured to generate device light (101), wherein the light generating system (1000) is configured to generate system light (1001) comprising the device light (101) of at least one light generating device (100), wherein the light generating system (1000) is configured to provide (in an operational mode) system light (1001) according to the following characteristics: (A) during a first time period t1 the system light (1001) is white light having a radiant flux Φ11 in a first wavelength range and a radiant flux Φ12 in a second wavelength range; (B) during a second time period t2 the system light (1001) is light having a radiant flux Φ21 in the first wavelength range and a radiant flux Φ22 in the second wavelength range; (C) during a third time period t3 the system light (1001) is light having a radiant flux Φ31 in the first wavelength range and a radiant flux Φ32 in the second wavelength range; (D) Φ21<Φ11 and Φ31<Φ11; (E) Φ22>Φ12, and Φ32<Φ12; (F) t2 is selected from the range of 1 second-30 minutes; and t1>t2; and (G) the first wavelength range is 380 nm-λ1 and the second wavelength range is λ1-780 nm, wherein λ1 is selected from the range of 485-550 nm.

The invention discloses a vehicle window control method, system and device and a vehicle. The method comprises the following steps: acquiring optical parameters of light incident to a first window area of a vehicle at the first time, wherein the optical parameters comprise first illuminance and first optical radiation intensity; and setting optical performance parameters of the first vehicle window area according to the optical parameters. According to the embodiment of the invention, the optical performance parameter of the first vehicle window area is cooperatively set by combining the illuminance and the optical radiation intensity, so that the dynamic environment response capability of the vehicle window glass color changing function can be remarkably improved, and the effects of intelligently identifying complex illumination scene changes and adaptively adjusting vehicle window glass color changing are achieved; moreover, the implementation of the embodiment of the invention does not depend on high-cost materials, so that the cost is also saved.

The handpiece comprises an array of emitters, oriented to emit optical energy toward a region of epidermis to be treated. The handpiece further comprises a transparent element positioned in front of the array of emitters and through which, during use, optical energy emitted by the array of emitters and optical energy backscattered from the epidermis pass. A cooling device is adapted to remove heat from the region of epidermis during use. The cooling device comprises at least one cooling plate and a thermoelectric device, with a hot side and a cold side, interposed between the cooling plate and the transparent element.

The invention discloses a high-power organic light emitting diode. The organic light-emitting material suitable for a high-power organic light-emitting diode is obtained by testing the triplet exciton lifetime of the organic light-emitting material. The high-power organic light-emitting diode comprises an optical radiation layer, the optical radiation layer comprises an organic light-emitting material, and the triplet exciton lifetime of the organic light-emitting material is smaller than or equal to 1 microsecond. The high-power organic light-emitting diode provided by the invention has an extremely low efficiency roll-off effect, and when the external quantum efficiency is reduced to half of the maximum value, the driving current density of the device is greater than 3 amperes / cm < 2 >; the laser has the characteristics of high radiation exitance (greater than 15 milliwatts / cm < 2 >), continuously adjustable spectrum, simple structure, long service life, capability of solution processing, capability of large-area processing and the like.

The invention belongs to the technical field of narrow-band optical radiation imaging, and particularly relates to a narrow-band EUV and BEUV radiation imaging device based on a nano polycrystalline hexagonal boron nitride scintillator. The imaging device is composed of a nano polycrystalline hexagonal boron nitride scintillator plated with Zr, Mo or Nb metal, a high-precision camera, a vacuum interface flange and a shielding shell, and narrow-band selective imaging can be achieved in the wave band of 6-14 nm. The radiation imaging device has high sensitivity, narrow-band selectivity and excellent radiation resistance to 13.5 nm EUV light and 6.7 nm BEUV light, and compared with a traditional YAG-based imaging device, the radiation imaging device has remarkable advantages. The invention provides an innovative solution for high-performance EUV and BEUV radiation imaging, and has important application value in the field of EUV and BEUV beam diagnosis.

An ultraviolet (UV) light source includes a light emitting element that is configured to generate light of a first frequency, a nonlinear optical element that is configured to receive the light of the first frequency from the light emitting element and generate UVC or far-UVC light of a second frequency from the light of the first frequency, and an output coupling element that is configured to selectively outcouple the UVC or far-UVC light from the nonlinear optical element as output light. Related light sources and fabrication methods are also discussed.

In a method for producing a coated workpiece, a coating is applied to at least one surface (115) of the workpiece (110) using laser radiation. For this purpose, a first laser beam directed onto the surface is generated by guiding laser radiation emitted by a laser source through beam-shaping optics of a laser processing head onto a first impact zone on the surface. A preferably powdered filler material is fed to the first laser beam in such a way that the filler material is heated and / or at least partially melted in an interaction zone by laser radiation of the first laser beam and bonds with the heated material on the surface in the region of the first impact zone (225-1).A relative movement is generated between the workpiece (110) and the laser processing head such that the first impact zone moves in a feed direction at a feed rate along a feed path, leaving a track (228) of coating material behind it. Furthermore, at least one second laser beam directed onto the surface is generated for post-treating the coating material. Laser radiation emitted by a laser source is guided by focusing optics of the beam-shaping optics of the laser processing head onto a second impact zone (225-2) lagging behind the first impact zone in the feed direction, and acts on the track of coating material.

Method for generating a porous injectable scaffold that includes providing a liquid composition of 2 phases at a temperature below 25° C., of Newtonian behavior, where the composition comprises:a liquid dispersant phase at room temperature formed by a gelatin with a low melting point, less than 15° C., functionalized with methacryloyl or methacrylamide groups; and a photoinitiator;and a dispersed phase, of microdroplets or beads in solid state, of a gelatin solution with a melting point greater than 25° C.;initiating the polymerization of the dispersing phase by light radiation; raising the temperature to 35-40° C. and allowing melting of the dispersed phase; and obtaining a porous scaffold.The formed porous scaffold and its use as a biological support for tissue regeneration / generation; as a biological matrix as a support for cells, for cell invasion; as an acellular biological matrix, a biological matrix as a mechanical support and / or a biological matrix for active components.

A system for drying a battery electrode coating includes two laser diode arrays and a laser module. Each laser diode array emits multi-beam laser radiation to an edge region including a respective edge of a coating lane deposited on a metal foil. The laser module emits a diverging laser beam to an interior area of the coating lane between the two edges. The intensity distribution of the diverging laser beam at the coating lane spans a gap in the widthwise dimension between respective intensity distributions of the multi-beam laser radiation from the two laser diode arrays. The use of laser diode arrays to perform the edge drying allows for tailoring the intensity distribution of the combined laser irradiation to dry the coating lane without over-drying and delaminating the edges. The use of a single, diverging laser beam in the interior area allows for optimizing affordability and energy efficiency.

A semiconductor tunable ring laser including a laser cavity having a closed loop optical path, and an optical filter that is arranged within the laser cavity. The optical filter includes a first MZI-based tunable frequency filter section including a 1×3 MMI input splitter providing a first non-zero fraction, T1, of optical radiation at a first optical output port of the 1×3 MMI for wavelength locking and / or power monitoring purposes outside of the laser cavity, a second fraction, T2=(1−T1) / 2, of optical radiation at a second optical output port of the 1×3 MMI, and a third fraction, T3=(1−T1) / 2, of optical radiation at a third optical output port of the 1×3 MMI. A PIC including the semiconductor tunable ring laser, and to an opto-electronic system including such a PIC.

The present invention provides an optical beam member for a charged particle-optical device configured to direct a charged particle beam towards a sample location. The optical beam member comprises a first beam aperture and one or more optical radiation sources. The first beam aperture is for passage of the charged particle beam. The one or more optical radiation sources are arranged adjacent the first beam aperture. The optical radiation sources are configured to generate and emit optical radiation beams towards the sample location such that an optical beam spot on the sample associated with the one or more optical radiation sources is substantially coincident with a charged particle beam spot on the sample. The charged particle beam spot is associated with the charged particle beam.

The invention relates to an optical radiation source. It is an object of the invention to enable the generation of laser radiation with (ultra) narrow linewidth and to provide an optical radiation source which is robust and simple to control. The optical radiation source of the invention comprises: a laser source having a gain medium and an internal cavity configured to generate laser radiation at multiple frequencies separated by a first free spectral range, at least one external cavity in optical communication with the laser source, the external cavity having a plurality of resonance modes within the gain bandwidth of the laser source, wherein the resonance modes are separated by a second free spectral range which is different from the first free spectral range, wherein the external cavity is configured to act as a frequency-selective reflector to selectively reflect laser radiation generated by the laser source back into the gain medium, thereby causing the gain medium to lase predominantly at only one frequency, and wherein the optical radiation source is configured to couple a portion of the generated laser radiation out from the internal cavity and / or from the external cavity.