643 results about "Surface emission" patented technology

The invention discloses a container coating thickness online detection system and method, and the system comprises a non-contact thickness measurement unit which is used for transmitting modulation light to the surface of a container in real time according to the infrared light thermal modulation principle to excite a coating to generate a thermal wave signal, and determining the coating thickness through detecting the thermal wave reflection delay; the multi-mode executing mechanism is used for selecting a robot or a truss to carry the thickness measuring unit according to the specification of the container, and receiving a control instruction to drive the thickness measuring unit to move to a target detection point of the container according to a preset path; the three-dimensional positioning system is used for detecting the position deviation of the container entering the measuring station and feeding back the space coordinates of the container to the control system; and the control system is used for generating a motion path instruction according to the size of the container and a preset sampling rule, and receiving the coating thickness data of the thickness gauge in real time to generate a detection report, so that the precision, intelligence and high efficiency of container coating detection are realized.

Illumination device (10) for a motor vehicle headlamp for generating a low beam, wherein a vertical extension of the low beam extends along a VV-line from at least 0° down to at least −10° on the VV-line, said illumination device (10) comprises: —an optic body (100) comprising a common light input section (110), a light output section (130) and a shell surface (140) limiting the optic body (100), —a projection lens system (200) configured to project the light-rays in front of the illumination device (10), wherein the projection lens system (200) in combination with the optic body (100) are configured to generate the low beam illuminated by the projection lens system (200), wherein the optic body (100) comprises a first set of optically operative surfaces for guiding light-rays along a first light-ray path (LR1), wherein the first set of operative surfaces comprises a first and second light deflection surface (300a, 300b), and a first light exit surface (300c), wherein the first and second light deflection surfaces (300a, 300b) are arranged on the shell surface (140), and wherein the first light exit surface (300c) is arranged on the light output section (130), wherein light rays following the first light-ray path (LR1) are incident on the first deflection surface (300a) and are deflected to the second deflection surface (300b), and wherein light-rays incident on the second deflection surface (300b) are deflected to the first light exit surface (300c), and wherein light-rays emitted by the first light exit surface (300c) contribute to generate a first part of the low beam, and wherein the optic body (100) comprises a second set of optically operative surfaces for guiding light-rays along a second and a third light-ray path (LR2, LR3), wherein the second set of optically operative surfaces comprises a third deflection surface (400a) and a second light exit surface (400b), wherein the third deflection surface (400a) is arranged on the shell surface (140) and the second light exit surface (400b) is arranged on the light output section (130) separate from the first light exit surface (300c), wherein light-rays following the second light-ray path (LR2) are incident on the third deflection surface (400a) and are deflected to the second light exit surface (400b) for coupling out of the optic body (100), and wherein light rays following the third light-ray path (LR3) are incident on the second light exit surface (400b) directly from the common light input section (110), wherein light-rays emitted by the second light exit surface (400b) contribute to generate a second part of the low beam.

An electronic device is provided. The electronic device includes a ring-shaped housing having an inner surface into which a finger of a user is inserted, a light-emitting unit configured to emit a light to the inner surface of the housing through a first region of the inner surface of the housing within the housing, a light-receiving unit configured to receive first light, which is a portion of the light reflected from an inside of the finger of the user, through a second region of the inner surface of the housing within the housing, and a coating layer, disposed between the first region and the second region, configured to reflect second light, which is distinct from the first light and is remaining portion of the light, to the finger of the user to transmit the second light to the light-receiving unit.

A cathode-ray tube ultraviolet light source includes a metal housing provided with a light-transmissive window, a heatsink disposed within the metal housing, a phosphor having a first surface and an opposing second surface, wherein the second surface of the phosphor is in thermal contact with the heatsink, and an electron gun capable of developing an electron beam to impinge upon the first surface of the phosphor, whereby light emitted from the second surface of the phosphor is directed through the light-transmissive window.

The invention provides a photonic crystal surface emitting laser and a manufacturing method thereof, the photonic crystal surface emitting laser comprises a gain assembly and a photonic crystal assembly, and the gain assembly comprises a semiconductor substrate, a carrier transport layer and an active layer which are stacked in sequence; the photonic crystal assembly comprises a silicon-on-insulator structure and a photonic crystal structure formed on the silicon-on-insulator structure; the active layer and the photonic crystal structure are combined in a bonding mode so that light feedback and surface emission can be achieved through the photonic crystal structure when the active layer emits light. According to the photonic crystal surface emitting laser and the manufacturing method thereof, the key components of the photonic crystal surface emitting laser are separately manufactured and integrated through bonding, so that the manufacturing process is simplified, the manufacturing cost is reduced, the yield is improved, the process of each module can be independently optimized, and the risk of failure of the whole process is reduced.

The invention discloses an LED dimming system and method, and the system comprises a white light LED which is used for emitting a spectrum in a 400-650 nm wave band; at least three red light LEDs of blue light excitation fluorescent powder respectively emit red light with different central wavelengths, the central wavelength of the first red light LED is 660nm + / -2nm, the half-peak width is less than or equal to 15nm, and an I < n > GaA < l > P material vertical cavity surface emission structure is adopted; the central wavelength of the second red light LED is 730nm + / -3nm, the half-peak width is less than or equal to 20nm, and the second red light LED adopts an A < l > GaAs material quantum well structure; the center wavelength of the third red light LED is 780nm + / -5nm, the half-peak width is less than or equal to 25nm, and a GaAsP material gradient refractive index waveguide structure is adopted; the driving control module comprises three independent constant-current driving units which are used for respectively controlling the current and PWM duty ratio of each red light LED; the optical mixing module is composed of a two-stage integral rod and a micro lens array and is used for realizing uniform mixing of spectrums.

Systems and methods for laser-based surface processing operations on a semiconductor wafer, such as a silicon carbide semiconductor wafer, are provided. In one example, a method includes providing a semiconductor workpiece having a surface. The method includes providing emission of one or more lasers to the surface of a semiconductor workpiece at a non-perpendicular incidence angle relative to the surface. The method includes imparting relative motion between the one or more lasers and the semiconductor workpiece while providing emission of the one or more lasers to the surface of the semiconductor workpiece at the non-perpendicular incidence angle.

The embodiment of the invention discloses an adjustable ring laser welding system and method based on intelligent laser-assisted wire filling. According to the method, a laser emitting module is used for emitting a corresponding laser beam to the surface of a welding piece, and the shape of the laser beam is adjustable and annular; the wire filling module is used for conveying welding wires to the welding part; and the feedback module is used for acquiring the temperature and morphology in a molten pool corresponding to a welding part in the welding process to generate corresponding real-time monitoring data, and determining a feedback signal of the laser emission module and a feedback signal of the wire filling module based on the real-time monitoring data. According to the embodiment of the invention, intelligent and self-adaptive adjustment of the welding process can be realized through multi-dimensional information fusion and closed-loop control, the dependence on skills of operators is reduced while the welding quality is improved, and the production efficiency and the product yield are improved.

The invention discloses a surface emitting laser which solves the problems that a laser is poor in single-mode working stability and high in preparation process difficulty. The surface emitting laser comprises a substrate and an epitaxial structure which are arranged in a stacked mode, the epitaxial structure is provided with a plurality of holes, the section of each hole is roughly in a T shape, the sections are parallel to the substrate, filler is arranged in the holes, and the refractive index of the filler is different from that of the epitaxial structure. Under the same mode field area and surface emission coupling efficiency, the threshold gain difference between the base mode and the high-order resonance mode of the laser is large, and the stability of the single-mode working state is high. And the hole machining difficulty of the T-shaped structure is low.

A lighting device for a motor vehicle, in particular a high-definition headlamp, includes an imaging component that has an active surface on which light-emitting diodes or laser diodes are arranged in a matrix to generate pixels in a light distribution in a targeted manner, and a projection lens with which the light emitted from the active surface is projected outward from the motor vehicle when the lighting device is in operation. The lighting device is designed to switch the projection lens from a first setting to a second and from the second setting to the first. The projection lens has a first focal length in the first setting, and a second focal length in the second setting, which is greater than the first focal length.

To provide a surface emitting laser, a surface emitting laser array, and an electronic device that improve the reliability of a transparent conductive film.The present technique provides a surface emitting laser including: a first structure including a first multilayer reflective mirror; an active layer; and a second structure including a transparent conductive film, a pad electrode, and a second multilayer reflective mirror, the first structure, the active layer, and the second structure being disposed in this order, in which a film thickness of the transparent conductive film disposed at a position in contact with the pad electrode is greater than a film thickness of the transparent conductive film disposed on an optical path of light generated by the active layer.

The invention relates to an integrated component group comprising: a carrier, in particular a submount, with a first main surface and an opposing second main surface; a laser arranged on the carrier on the first main surface and having a first light-emitting surface and an opposing second light-emitting surface, wherein the laser is configured to emit more laser light via the first light-emitting surface than via the second light-emitting surface during its intended use; and a photodiode integrated into the carrier and configured to detect laser light emitted by the laser from the second light-emitting surface.

The invention belongs to the technical field of defect detection, and particularly relates to a mirror surface type surface defect detection method and system, a laser device is used for emitting a laser beam to a detected mirror surface type surface, the laser beam is reflected on a receiving plate through the detected mirror surface type surface to form an elliptic arc scanning path, and the elliptic arc scanning path is discretized into a plurality of continuous path points; obtaining a theoretical reflection light spot track of the roi area to be detected on the receiving plate, dividing the theoretical reflection light spot track into multiple equal parts, and establishing a mapping relation with each path point; the method comprises the following steps: controlling a laser to scan a detected mirror surface type surface along an elliptic arc scanning path, identifying path points corresponding to defects, recording actual position coordinates on a receiving plate, and obtaining equal division point positions on a theoretical reflection light spot track; acquiring an optical path offset, and determining normal vector deflection information of the defect at the surface of the detected mirror surface; obtaining a three-dimensional space coordinate of the defect; and constructing a three-dimensional model of the detected mirror surface type surface, and marking defect positions.

According to one embodiment, an optical element includes a first member. The first member includes a first region along a first plane. The first region includes a plurality of first structures. The plurality of first structures are arranged along a first direction at a first pitch and along a second direction at a second pitch. The first direction is along the first plane. The second direction is along the first plane and crosses the first direction. The first pitch is longer than the second pitch. A first length of the first region along the first direction is longer than a second length of the first region along the second direction.

Method for producing a plurality of optoelectronic components comprising the steps: Producing a plurality of volume-emitting µLEDs, each having a first emission surface, on a wafer, which are arranged at a first distance from one another on the wafer, wherein the µLEDs comprise a semiconductor layer stack of at least a first layer of a first conductivity type, a second layer of a second conductivity type, and an active region arranged between the first and second layers, an electrically conductive first contact layer on the first layer, and an electrically conductive second contact layer on the second layer; Transferring a subset of the µLEDs from the wafer to a temporary carrier such that at least two µLEDs of the subset of µLEDs are arranged on the temporary carrier at a second distance from one another that is greater than the first distance; Creating a structured dielectric material layer on the temporary carrier, which surrounds at least side surfaces of the subset of µLEDs in a contacting manner, and which has a second emission surface for light emitted by the first emission surface, wherein the second emission surface is larger than the first emission surface, in particular by at least a factor of 1.1; and Creating a second contact structure on the structured dielectric material layer, wherein the second contact structure contacts the electrically conductive second contact layer of the µLEDs.

3D printing device and 3D printing method. The device comprising:a build platform having an external surface;means for providing a polymerizable fluid resin on said surface;a radiation source, to emit a radiation beam to said surface;beam positioning means, to variably position an impinging point of said beam; andmeans for controlling said source and said positioning means to manufacture a 3D tubular object according to a model;wherein the build platform comprises a stem forming a tubular shaped surface around a longitudinal axis, so that said external surface of said build platform is comprised in said tubular shaped surface, and said positioning means is configured to variably position said impinging point of said beam on different points of said fluid resin provided on said tubular shaped surface.

The embodiment of the invention relates to a surface emitting laser. The surface emitting laser comprises a substrate; the bottom reflector structure, the active layer and the top reflector structure are arranged on the substrate; the grating structure is arranged on the top reflecting mirror structure; the grating structure comprises a base layer and an injection layer obtained by performing ion injection on a partial region of the base layer, the refractive index of the injection layer is different from that of the base layer, and the grating structure is configured to control the polarization mode of output light of the surface emitting laser. By applying the scheme of the invention, the surface smoothness of the grating can be improved, and an almost planar grating structure is manufactured.

The invention relates to a component package, in particular a laser package, comprising a first semiconductor chip with a first main side and a second main side opposite the first. The first semiconductor chip has a first layer adjacent to the first main side, which comprises a photonically integrated element, wherein the first layer has at least one light input surface, at least one light output surface, and at least one light guide connecting the at least one light input surface and the at least one light output surface. The first semiconductor chip also has a second layer adjacent to the second main side, which comprises an integrated circuit that is decoupled from the photonically integrated element, and a plurality of contact pads on the second main side, which are provided for connection to a carrier, in particular a PCB, or a second semiconductor chip.The component package also comprises a first optoelectronic component, in particular a laser chip, which is designed to emit light of a first wavelength from at least one first emission surface, wherein the at least one first emission surface is arranged opposite the at least one light coupling surface.

The embodiment of the invention relates to a surface emitting laser, a light emitting assembly and an optical module. The surface emitting laser comprises a substrate; the bottom reflector structure, the active layer and the top reflector structure are arranged on the substrate; wherein a plurality of oxidation limiting layers are formed in the top reflecting mirror structure, and the thickness of part of the oxidation limiting layers is different from the thickness of the other part of the oxidation limiting layers. According to the scheme, series resistance and stray capacitance can be reduced, and product performance is improved.

The invention relates to the technical field of coal quality detection, in particular to a multi-source fusion spectrum coal quality rapid detection device and method. The near-infrared spectrum detection module is used for emitting near-infrared square light spots to the surface of the target coal sample so as to detect the overall spectrum characteristic data of the target coal sample; the X fluorescence spectrum detection module is used for performing multi-angle spectrum detection on the target coal sample to obtain element composition data in the target coal sample; the laser sensing module is used for vertically emitting a laser beam to the target coal sample and receiving corresponding reflected light so as to determine height information of the surface of the target coal sample; and the data processing module is used for fusing the overall spectral feature data and the element component data, calibrating fusion information according to the height information, and performing data processing operation on the spectral compensation information to calculate various coal quality indexes corresponding to the target coal sample, so that the adaptability to coal samples in different states is improved, and the coal quality index detection accuracy is improved. And the real-time detection requirement in the coal production process is met.

A device is described that includes a lens, a photonic substrate, and a surface emitting laser mounted and a set of photodetectors mounted on the photonic substrate. The photonic substrate includes a first surface coupler, a second surface coupler, and an interference coupler. The surface emitting laser emits electromagnetic radiation that is modulated according to a continuous wave frequency modulation. The first surface coupler directs a local oscillator portion of the electromagnetic radiation toward the set of photodetectors. The second surface coupler directs, toward the set of photodetectors, a signal portion of the electromagnetic radiation that is reflected from a target and received via the lens. The interference coupler optically interferes the local oscillator portion from the first surface coupler with the signal portion from the second surface coupler to generate a set of optical outputs that are provided to the set of photodetectors.

Provided are a new vertical cavity surface emitting laser structure and a manufacturing method thereof. The structure includes a substrate layer, a lower N-type DBR, an active region, an upper N-type DBR and a mixed dielectric DBR sequentially arranged from bottom to top, where a second-class tunnel junction is arranged on one side of the active region close to the upper N-type DBR, where the second-class tunnel junction is embedded in a bottom of the upper N-type DBR and surrounded by the upper N-type DBR, and the substrate layer, the lower N-type DBR, the active region, the upper N-type DBR, the mixed dielectric DBR and the second-class tunnel junction are all coaxial elliptical cylinders; negative electrodes are arranged on the lower N-type DBR, and positive electrodes are arranged on the upper N-type DBRs substrate layer.

The present technology provides a surface emitting laser capable of suppressing a decrease in luminous efficiency.The present technology provides a surface emitting laser including: first and second multilayer film reflectors; a plurality of active layers laminated together between the first and second multilayer film reflectors; a tunnel junction disposed between two active layers adjacent to each other in a lamination direction among the plurality of active layers; and an oxide confinement layer disposed between one active layer of the two adjacent active layers and the tunnel junction. According to the present technology, it is possible to provide a surface emitting laser capable of suppressing a decrease in luminous efficiency.

A surface-emitting laser element includes: a first guide layer including a photonic crystal layer that is formed on a c plane of a group-3 nitride semiconductor and includes air holes arranged with two-dimensional periodicity in a plane parallel to the photonic crystal layer, and an embedding layer that is formed on the photonic crystal layer and closes the air holes; an active layer formed on the first guide layer; and a second guide layer formed on the active layer, wherein an air hole set including at least a main air hole and a sub-air hole smaller in size than the main air hole is arranged at each square lattice point in the plane parallel to the photonic crystal layer, and wherein the main air hole has a regular-hexagonal prism shape, a long-hexagonal prism shape, or an elliptic cylindrical shape with a major axis parallel to a <11-20> axis.

The invention discloses a temperature control method, device and equipment for semiconductor equipment and a storage medium, and relates to the technical field of temperature control, and the method comprises the steps: calculating the equivalent radiation temperature of the brightness of a slit cavity observation band based on the brightness of the slit cavity observation band in an edge infrared observation annular region of a rapid heat treatment furnace and the surface emissivity of a wafer; solving the equivalent temperature of the inner edge of the quartz clock cover; on the basis of the equivalent radiation temperature and the equivalent temperature of the inner edge of the quartz clock cover, net radiation heat incoming power transmitted to a wafer edge belt of the wafer by an annular slit radiation cavity in the rapid heat treatment furnace is calculated; and solving a target lamp area power replacement vector of the rapid heat treatment furnace based on the net radiation heat incoming power. According to the invention, the initiative and accuracy of wafer edge temperature control can be improved.

A vertical cavity surface emitting laser includes an oxide substrate having a first face and a second face at an opposite side from the first face; a semiconductor section disposed on the first face; a dielectric filter layer disposed between the semiconductor section and the first face and having a reflective spectrum configured to provide an optical window; a first DBR mirror; and a second DBR mirror disposed at a curved surface of the second face. The first DBR mirror, the semiconductor section, the dielectric filter layer, the oxide substrate, and the second DBR mirror are arranged in a first axial direction to form an extended cavity. The semiconductor section is disposed between the dielectric filter layer and the first DBR mirror, and includes a p-type III nitride region, an n-type III nitride region, and a III nitride active region between the p-type and n-type III nitride regions.

A LiDAR performance test system according to the present invention comprises a target that can rotate vertically or horizontally and a LiDAR device disposed to be spaced a predetermined distance apart from the target. The LiDAR device comprises: a transmitter for emitting light toward the surface of the target; and a receiver for receiving the light reflected from the surface of the target, wherein the target is disposed such that the path of light emitted from the transmitter toward the surface of the target and the path of reflected light received from the surface of the target by the receiver do not match or overlap. According to the present invention, the system for testing the performance of LiDAR by considering the surface reflection characteristics of the target is provided, and thus can contribute to improving the accuracy and reliability of LiDAR performance.

The present invention relates to a multi-focus type ultrasonic generator comprising: a casing unit for generating ultrasonic waves; an ultrasonic transducer unit which is mounted on the casing unit for generating ultrasonic waves and which emits ultrasonic waves toward one surface of the casing unit for generating ultrasonic waves; and a multi-focus lens unit which is mounted on one surface of the casing unit for generating ultrasonic waves, and through which the ultrasonic waves generated in the ultrasonic transducer unit pass to form, in the passing ultrasonic waves, at least two ultrasonic focal points having different arrival positions in the skin, and thus, since a plurality of ultrasonic focal points having different arrival positions in the skin are emitted on the skin, treatment time can be significantly reduced and treatment efficiency and a treatment effect can be improved.

The embodiment of the invention relates to a surface emitting laser and a preparation method thereof. The surface emitting laser comprises a substrate and a resonant cavity structure arranged on the substrate, the resonant cavity structure comprises a first reflecting mirror layer, an active layer and a second reflecting mirror layer which are sequentially positioned on the substrate; a photoelectric limiting layer is formed in the second reflector layer, the photoelectric limiting layer is of a polygonal annular structure, and the inner ring of the photoelectric limiting layer comprises at least three inner angles; the second reflector layer further comprises a non-ion injection area of an inclined cylinder, and the non-ion injection area of the inclined cylinder does not coincide with at least one inner angle of the at least three inner angles of the inner ring of the photoelectric limiting layer. In the second reflector layer, the area outside the non-ion injection area of the inclined cylinder is an ion injection area. According to the invention, the non-ion implantation region of the inclined cylinder is formed in the second reflector layer; therefore, the current concentration condition of the corresponding photoelectric limiting layer is damaged, and the reverse breakdown voltage resistance of the device is improved.