1933 results about "Reflective surfaces" patented technology

The invention discloses a metal surface quality detection method and system, and relates to the technical field of metal surface quality detection. The method is used for solving the problems of low microdefect detection precision, weak technological parameter relevance and closed-loop control deficiency of the high-reflection surface. The metal surface is irradiated through multi-angle coherent light field serialization, the phase offset of interference fringes is analyzed to generate three-dimensional shape data, and reflection noise interference is restrained. Defect depth gradient is extracted based on dynamic segmentation of process parameter constraint, deposition temperature and pressure deviation are quantified through deconvolution calculation, and process deviation feature distribution is constructed. Finite element simulation is utilized to generate a process-morphology mapping atlas library, cross-domain invariance features are extracted through depth constraint manifold alignment and comparative learning, and a causal correlation model of defect types and process parameters is established. And dynamically adjusting process parameters according to the weight gradient, and reflowing data to update the manifold rule. And high-precision three-dimensional defect detection, process deviation traceability and adaptive parameter optimization are realized.

An apparatus includes a waveguide and one or more partially reflective surfaces embedded inside the waveguide, wherein each of the one or more partially reflective surfaces includes a multi-layer coating structure, wherein a first portion of the multi-layer coating structure induces an overall phase shift of light propagating through the first portion of the multi-layer coating structure and wherein a second portion of the multi-layer coating structure is selected to decrease the overall phase shift.

Mechanisms for adjusting atoms of an Intelligent Reflective Surface (IRS) are provided. A method is performed by a controller configured to control an IRS comprising an array of atoms, each having an individually adjustable phase shift and gain. At least some of the atoms are provided with a measurement sensor. The method comprises obtaining, from the measurement sensors, measurements of received power of a signal transmitted from a user equipment and received by the atoms and determining, by a gradient in received power between two of the measurement sensors is larger than a threshold value, that the user equipment is in near-field of the IRS. The method comprises, as a result thereof, adjusting the phase shift of a first subset of the atoms for reflection at the IRS of subsequent communication between a network node and the user equipment when the user equipment is in the near-field of the IRS.

The invention discloses a high-reflective surface defect detection method based on structured light and phase deflection, which belongs to the technical field of visual inspection, and comprises the following steps: generating a multi-frequency sinusoidal grating pattern by using a structured light module, and projecting the multi-frequency sinusoidal grating pattern to the surface of a detected object; multi-frequency phase shift coding is introduced, an absolute phase is calculated through a pilot frequency unwrapping method, a depth map obtained by the structured light is calculated, and a structured light point cloud is reconstructed; a unit normal vector is calculated, a Poisson reconstruction model is adopted to obtain a depth map obtained by phase deflection, and deflection point cloud is obtained; the structured light point cloud data and the deflection point cloud data are registered through an iterative nearest point algorithm and then fused to form a fused depth map; and determining a defect area by adopting the maximum principal curvature and the minimum principal curvature combined mask. By means of the mode, the limitation of a traditional three-dimensional measurement means in high-reflection and complex-curvature surface defect recognition is solved, and submicron-level three-dimensional deformation detection precision is achieved.

A lighting device disclosed in an embodiment of the invention comprises a substrate; a light source disposed on the substrate; and a light guide member disposed on the substrate and the light source, wherein the light guide member includes an exit surface and a first reflective surface facing the exit surface, the first reflective surface includes a plurality of reflective portions having different heights with respect to an upper surface of the substrate, and each of the plurality of reflective portions may include a plurality of first surfaces inclined with respect to the upper surface of the substrate.

An optoelectronic apparatus (100, 500) includes a dual folding mirror (114, 510) mounted on a carrier substrate (112, 524) with first and second reflecting surfaces (520, 522) disposed at opposite angles. A plurality of identical photonic integrated circuits (PICs 108, 110, 320, 502, 504, 506, 508) are disposed on the carrier substrate. Each PIC includes an array of optical transceiver cells (314, 400) on a planar substrate with respective edge couplers (406) along an edge of the planar substrate, and an optical distribution tree (320) coupled to convey coherent radiation to the optical transceiver cells. A first PIC is disposed on the carrier substrate such that the edge of the first PIC is in proximity to the first reflecting surface, and a second PIC is rotated by 180° relative to the first PIC such that the edge of the second PIC is in proximity to the second reflecting surface.

A light detection and ranging (LIDAR) system for a vehicle can include: a light source configured to output a transmit beam at a first orientation; a reflective surface configured to redirect the transmit beam from the first orientation to a second orientation; and a lens interface configured to receive the transmit beam at the first orientation and focus the transmit beam onto the reflective surface; wherein the LIDAR system emits the transmit beam at the second orientation into an environment of the LIDAR system.

The invention belongs to the field of virtual image display, particularly relates to a spherical reflection cavity virtual calibration method based on a neural radiation field, and aims to solve the problems that micron-level deviation is difficult to accurately capture due to interference of a high-reflection surface, and an executable correction instruction cannot be generated by fusing process constraints. The method comprises the following steps: deploying image acquisition equipment around a cavity to synchronously capture a multi-view optical image sequence; inputting a neural radiation field model, reconstructing a three-dimensional geometric structure and optical properties through a volume rendering technology, and dynamically optimizing and fitting reflection characteristics and curvature changes of a carbon fiber material; extracting spherical radius, local curvature and boundary contour parameters, and comparing the parameters with design specifications point by point to generate a deviation distribution diagram; generating a multi-level calibration instruction set based on the deviation distribution diagram in combination with the laying layer tolerance and the assembly clearance; and outputting an instruction to the manufacturing system to execute physical adjustment, and re-collecting the image to verify the calibration effect until the acceptance index is met. According to the invention, the deviation capturing precision is improved, and a correction instruction can be generated.

The present disclosure relates to estimating a channel in a wireless communication system, and a method for operating a user equipment (UE) may a method for operating a user equipment (UE) in a wireless communication system may include receiving configuration information related to channel measurement from a base station, receiving reference signals for the channel measurement, generating channel information by using the reference signals, and transmitting the channel information to the base station. The reference signals may be transmitted from the base station, reflected in portion of reflecting surfaces included in a reflecting intelligent surface (RIS), and then received by the UE, and the configuration information may include information indicating a number or location of at least one off-reflecting surface among the reflecting surfaces.

A system that performs wall direction estimation to determine a position of an acoustically reflective surface relative to a device. For example, the device may detect a direct sound received from an active sound source and a first reflection reflected from a nearby wall. Based on a time delay, the device can estimate a direction and / or distance to the wall. For example, the device determines a time differential of arrival (TDOA) between the direct sound and the first reflection for each microphone in a microphone array. The device combines TDOA values of the entire microphone array into a distance vector, which the device can compare to reference distance data to determine the best wall direction estimate. For example, reference distance values are fixed based on a geometry of the microphone array and the device can identify an azimuth value that is most similar to the distance vector.

The invention relates to an optically variable security element (12) for securing valuables (10), having a reflective surface area (14) containing a plurality of reflective pixel elements (20) which together produce an optically variable motif representation, the appearance of which changes when the security element is tilted along a first direction (16) in the plane of the reflective surface area.According to the invention, it is provided that the pixel elements (20) along the first direction (16) each have an inclination to the reflective surface region (14) which is constant except for any isolated discontinuities, that the pixel elements (20) along a second direction (18) perpendicular to the first direction in the plane of the reflective surface region each have an inclination to the reflective surface region (14), which inclination varies in the entire surface region (14) or in two or more partial surface regions (52, 54; 60, 62, 64) visible to the naked eye, in each case except for any isolated discontinuities, within a predetermined inclination range, whereby the optically variable motif representation appears with a substantially uniform brightness in the entire surface region or in the said partial surface regions when tilted along the second direction (18).

A method of wireless communication at a user equipment (UE) is provided. The method includes receiving, from a scheduling entity, an indication of at least two different cross link interference (CLI) measurement resources of a message for transmission from a transmission source. The method also includes receiving, from an intelligent reflecting surface (IRS), a reflected transmission of the message originating from the transmission source, wherein the reflected transmission of the message is reflected by the IRS based on one or more IRS coefficients. The method further includes determining one or more CLI measurement parameters to generate a report. The method includes transmitting, to the scheduling entity, a CLI measurement report. The method also includes receiving, from the IRS, another reflected transmission of the message originating from the transmission source using one or more configured IRS coefficients that are configured based on the CLI measurement report.

An optoelectronic device that includes a substrate and a stack of organic layers that has at least one active layer arranged between a reflective surface and a semi-reflective surface arranged facing one another at a given distance and forming an optical cavity. The device includes at least three groups of pixels, each group of which is characterized by a cavity of a different optical length, the cavity having a number of bilayers arranged between the substrate and said stack of organic layers, each bilayer being formed of a first transparent and conductive layer of a first transparent and conductive material, and of a second transparent and conductive layer of a second transparent and conductive material, in direct contact with the first transparent and conductive layer.

In one example, a laser level target post for leveling a server cabinet is disclosed. The laser level target post includes an elongated body section and a reflective surface at a top end of the elongated body section. The top end reflective surface is to reflect a received light beam for leveling a top surface of the server cabinet. The laser level target post also includes a magnetic base at a bottom end of the elongated body section. The magnetic base may attach the laser level target post to a corner of the top surface of the server cabinet.

A quantum memory device 100 for storing a signal field 170 comprises an optical cavity comprising a first and second reflective surface 110, 120, a first and a second optical element 130,140 within th

Imaging lens arrangement (100), comprising: an optical plastic element (110), comprising: an incidence surface (111), wherein an imaging light enters the optical plastic element (110) through the incidence surface (111); a reflective surface (112), wherein the imaging light changes direction through the reflective surface (112); an exit surface (113), wherein the imaging light exits the optical plastic element (110) through the exit surface (113); and at least one connecting surface (130) which is used to connect the incident surface (111), the reflecting surface (112) and the exit surface (113), wherein the at least one connecting surface (130) comprises: a sprue (131) which is arranged on the at least one connecting surface (130), and wherein the sprue (131) is raised relative to an adjacent section (134) of the at least one connecting surface (130); a divergent nozzle surface (132) connected to the sprue (131) and the adjacent section (134), wherein the divergent nozzle surface (132) diverges from the sprue (131) and extends in a direction of the adjacent section (134); and a gate remnant (133) which is arranged on a surface of the sprue remnant (131), wherein a contour of the gate remnant (133) is linear and the gate remnant (133) extends over the surface of the sprue remnant (131); wherein, when projected along a direction in a front view of the adjacent section (134) of the at least one connecting surface (130), a projection surface of the divergent nozzle surface (132) is As, a projection surface of the sprue residue (131) is Ag, and the following condition is met: 0.08 ≤ As / Ag ≤ 0.68.

The present invention relates to a light head with a light sensor, including a lamp holder, a reflector and a control circuit board. The reflector is installed inside a hollow structure, and is equipped with an installation port, a light-emitting port and an imaging hole. A light source is installed in the installation port and is electrically connected to the control circuit board. The imaging hole is equipped with a light sensor and an inner wall of the imaging hole forms a reflective surface. A diffusely reflected light enters through the imaging hole. A portion of the light is directly projected onto the light sensor, while another portion of the light is reflected off the reflective surface to the light sensor. The light sensor determines whether to adjust the brightness of the light source based on the light intensity.

The invention belongs to the field of neutron optical devices, and relates to a neutron conduit waviness measuring method. The method comprises the following steps: S1, defining a waviness parameter sigma as an index for measuring the flatness of a reflecting surface, and calculating through a specific formula; s2, a total station is used for being matched with an auto-collimation eyepiece, in an auto-collimation mode, light beams of the total station irradiate the reflection surface, the normal incidence state is determined, and the angle is recorded; s3, mounting the total station on a high-precision guide rail, sliding along the guide rail, repeating the step S2 at a plurality of positions at equal intervals, recording a current instrument angle, and transmitting the current instrument angle to a computer; s4, processing the data by using a spreadsheet template, and calculating waviness according to the geometrical shape; and S5, evaluating the waviness value and the normal accuracy of the side wall of the multi-section conduit, and analyzing the influence of the waviness value and the normal accuracy on neutron reflection. The neutron reflection quality and the multi-section guide rail butt joint integration quality can be evaluated more accurately, the method is suitable for guide pipes in various geometrical shapes, design and manufacturing can be guided, the production efficiency can be improved, and support is provided for device improvement.

Detecting a presence of a liquid on a reflective surface using a ToF sensor system, wherein one or more infrared (IR) emitters (130-134) emit IR light via the reflective surface to a ToF sensor (110), wherein the ToF sensor receives the IR light, wherein the ToF sensor system determines a change in intensity of the received IR light, and wherein the ToF sensor system determines the presence of the liquid on the reflective surface based on the change in intensity of the received IR light.

An optoelectronic device is used with an optical fiber for data transmission and has a transmitter mounted on a printed circuit board (PCB) to emit light. A collimation lens on a lens block receives the light incident thereto. A microstructure on a reflective surface of the lens block has sections that reflect the light into attenuated portions. A focusing lens on the lens block focuses a first attenuated portion from first sections of the reflective surface to the optical fiber. Meanwhile, second sections of the reflective surface reflect a second attenuated portion to another reflective surface on the lens block. The second attenuated portion passes out of a refractive surface on the lens block to an receiver, which is mounted on the PCB adjacent the transmitter. The second attenuated portion of the light can be used to monitor the optical output of the transmitter.

An illuminating system includes a light source module and a light homogenizing element. The light source module includes at least one sub-light source module, and each sub-light source module includes a light-emitting element, a wavelength conversion element, a light-splitting element, a reflective element and a light guide element. The reflective element is configured to reflect the exited light beam converted by the wavelength conversion element to the light guide element. The light guide element includes a light incident surface, a reflective surface and a light exit surface. By designing the angle between the light incident surface of the light guide element and the light exit surface to be an acute angle, combined with the deflection configuration of the reflective element, the excited beam may be transmitted along different transmission paths without optical loss.

The invention provides an annular beam lens group, a coaxial wire feeding optical module and a laser cladding processing head, and relates to the technical field of welding. The annular beam lens group comprises a first reflection optical assembly and a second reflection optical assembly which are sequentially arranged along a laser transmission path; the first reflection optical assembly comprises a first reflecting mirror and a first driving unit, the first reflecting mirror is provided with a first reflecting surface, and the first driving unit is used for driving the first reflecting mirror to rotate around a first rotating axis; the second reflecting optical assembly comprises a second reflecting mirror and a second driving unit, the second reflecting mirror is provided with a second reflecting surface, and the second driving unit is used for driving the second reflecting mirror to rotate around a second rotating axis; and the second reflecting mirror and the second reflecting mirror are configured to rotate synchronously, so that the first reflecting surface and the second reflecting surface are in a parallel state, and the first rotating axis and the second rotating axis are arranged in parallel. The laser energy utilization rate can be increased, and the welding quality is improved.

The invention provides a multi-reflection superposition enhanced microwave displacement measurement method and system, and the method comprises the steps: S1, constructing a microwave multi-reflection propagation path, enabling a microwave radar to transmit electromagnetic waves to the microwave multi-reflection propagation path as a transmission signal, and receiving a corresponding echo signal; s2, extracting length change information of a microwave multi-reflection propagation path according to the echo signal; s3, establishing a linear superposition relation model between the total length of the microwave propagation path and respective displacements of W reflection surfaces in the microwave multi-reflection propagation path; w2; and S4, based on the linear superposition relation model, displacement information of the corresponding reflection surface is obtained and output. According to the invention, a larger phase variation can be obtained under the condition of small displacement or weak vibration, so that the measurement sensitivity is improved and the signal-to-noise ratio is improved.

Certain aspects of the present disclosure provide techniques for compensating for certain characteristic(s) of an intelligent reflecting surface (IRS). A method that may be performed by a first wireless node includes obtaining an indication of a correction for an IRS to compensate for one or more characteristics of the IRS and communicating with a second wireless node via the IRS using the indication of the correction.

A cap having a closed end and one or more openings is attached to the tip of an optical Raman probe sensor. The cap serves to block stray light noise from entering the tip of the sensor. In this way, Raman spectra may be more accurate and consistent. Further, the cap may be permanently affixed or removably attached to the sensor. In some embodiments, a reflective surface may be included on the interior surface of the closed end of the cap. This reflective surface may reflect Raman scattering light toward the tip, enhancing the received signal by a factor of 2 to 100.

Optical transmitting apparatuses are disclosed. In in an implementation, an apparatus comprises an array light source that includes M*N light sources. An included angle between any column of light sources in the N columns of light sources and any row of light sources in the M rows of light sources is predetermined. The array light source is located on a first side of a collimating lens, a plane on which the array light source is located is perpendicular to an optical axis of the collimating lens, and a distance between the plane on which the array light source is located and a center point of the collimating lens is a focal length of the collimating lens. An rotatable scanning mirror is located on a second side of the collimating lens, and a center point of a reflective surface of the scanning mirror is on the optical axis of the collimating lens.

An optical module (200), comprising an optical processing component (500). The optical processing component (500) comprises: a first beam processing assembly (510); a second beam processing assembly (520), the second beam processing assembly (520) being arranged above the first beam processing assembly (510); a lens assembly (530) arranged at the light exit side of the first beam processing assembly (510) and the second beam processing assembly (520); and a deflecting prism (540) arranged at the light exit side of the lens assembly (530), wherein the deflecting prism (540) is provided with reflective surfaces (5411, 5421, 5431, 5441, 5451) at the reflection side thereof, the reflective surfaces (5411, 5421, 5431, 5441, 5451) are located on an output optical path of at least one of the first beam processing assembly (510) and the second beam processing assembly (520), and the reflective surfaces (5411, 5421, 5431, 5441, 5451) are configured to reflect light signals output by the first beam processing assembly (510) and / or the second beam processing assembly (520).

To provide a spectroscopic measurement device and an article inspection device capable of increasing a light reception amount in a light detection section.SOLUTION: A spectroscopic measurement device includes: a light source section for emitting light to a tablet W being conveyed; a light detection section for measuring spectral characteristics of transmission light having passed through an optical fiber 41 by a spectrometer after the transmission light emitted from the light source section so as to pass through the tablet W is made incident to the optical fiber 41; and a reflection cover 5 disposed via a predetermined gap G with a front surface S of the tablet W and having a reflection surface 53 for reflecting the light having passed through the tablet W toward the front surface S of the tablet W. In the reflection cover 5, the reflection surface 53 is constituted by a curved surface of a spherical crown shape equal less than a hemisphere which extends toward the tablet W from an incident end surface 41a of the optical fiber 41.SELECTED DRAWING: Figure 2

Disclosed is a system implemented in an enclosed space. The system includes light source(s); tracking camera(s); an optical combiner arranged on an optical path of a light field display unit and on an optical path of a real-world light field of a real-world environment; and processor(s) configured to: control the tracking camera(s) to capture image(s) of the enclosed space, whilst controlling the light source(s) to project light pattern(s) onto a semi-reflective surface of the optical combiner; detect, in the image(s), a reflection of at least a part of the light pattern(s) off surface(s) in the enclosed space, and determine a shape of said reflection; and determine a curvature of the optical combiner, based on shapes of at least said part of the light pattern(s) and the reflection.

The invention discloses a terahertz frequency band compact range testing system and a calibration method thereof, and belongs to the technical field of testing. The system comprises an integrated mobile platform which carries a signal generation device, a signal receiving and processing device, a focal length calibration mechanism, a feed source and a metasurface lens. The transmission-type metasurface is used for replacing a traditional metal reflecting face, the metasurface adopts the PCB plane machining technology, and the implementation difficulty is low; the metasurface is small in size and light in weight, a carried mobile platform can adapt to a more flexible test scene, the amplitude and phase of incident electromagnetic waves can be flexibly regulated and controlled by designing size parameters of the metasurface unit, and the position of a feed source can be automatically adjusted according to the test frequency for calibration.