130 results about "Beam optics" patented technology

The invention discloses a device and method for measuring dust concentration distribution at an inlet of an aero-engine, and belongs to the field of aero-engine sand swallowing tests, the device comprises a pulse laser light source, a shaping module, an optical image acquisition module and a data post-processing module, the pulse laser light source is arranged at a preset position around the aero-engine and is used for emitting laser beams, and the shaping module is used for shaping the laser beams; the aero-engine is located in a sand dust environment to be detected; the shaping module is used for receiving the laser beam and outputting a sheet-shaped beam; the optical image acquisition module is used for receiving coherent scattered light emitted by the grit in the irradiation area of the flaky light beam to form a laser speckle image, and transmitting the obtained laser speckle image to the data post-processing module; and the data post-processing module processes the laser speckle image by adopting an inlet sand dust concentration measurement algorithm to obtain the concentration distribution of the inlet sand dust of the aero-engine. The device is simple in structure, and is suitable for measuring the sand dust concentration distribution at the inlet in the sand swallowing experiments of aero-engines with different sizes or stages.

Various optical systems for use in a light pulse atomic interferometer (LPAI)-based one-, two-, or three-axis accelerometer or gyroscope are disclosed. As an LPAI accelerometer or gyroscope may employ many different laser beams to implement the LPAI functionality, ways of combining these different laser beams to thereby simplify the optical systems are desired. The cooling laser beam portion of the optical system may be simplified using one or more reflective grating chips. The Raman laser beam optics may be simplified using combiners and separators. For LPAI systems sensing along three axes, various optical switching schemes may be employed, including ones that generate variable data-rates with a primary sensing axis having a higher data-rate than the secondary sensing axes. Further, by combining various laser beams in a time-multiplexed manner, the number of optical fiber tethers to a sensor head may be reduced.

An optical computation system includes a light source configured to produce a pump beam, an optical modulator configured to modulate the pump beam based on the modulation mask to generate a modulated beam, a non-linear medium configured to convert a portion of the modulated beam to a second harmonic (SH) beam and to produce an output including the SH beam and an unconverted portion of the pump beam, and a dichroic mirror configured to receive the output of the non-linear medium and to decouple the SH beam and the unconverted portion of the pump beam, a detector configured to detect a first optical power of the unconverted portion of the pump beam and to detect a second optical power of the SH beam, and a controller configured to generate an updated modulation mask based on the first and second optical powers for transmission to the optical modulator.

An ion implantation system includes an ion source, a beamline that extracts and shapes an ion beam from the ion source, a deceleration stage that reduces the energy of the ion beam while focusing the ion beam in the direction of a workpiece. A workpiece support has a structure that determines an implant plane position, which is the position of a workpiece surface that receives the ion beam. The workpiece support is configured to translate the implant plane along a path of the ion beam so as to shorten or lengthen the path without changing the tilt angle of the workpiece. The beam optics may be fixed and the focal point of the ion beam may be allowed to vary with a decel ratio. The workpiece support may translate the implant plane to a focal point of the ion beam or to some fixed offset from that focal point.

The embodiment of the invention provides a wavelength selection switch, an optical switching node and a communication system, which can reduce the number of devices included in the wavelength selection switch and improve the integration level of the wavelength selection switch. The wavelength selective switch comprises an input optical fiber, a lens group, a dispersion unit, an optical switching engine and an output optical fiber array, wherein the dispersion unit comprises an optical metasurface structure; the input optical fiber is used for transmitting input light beams to the lens group; the lens group is used for collimating an input light beam to obtain a first light beam and transmitting the first light beam to the dispersion unit; the optical metasurface structure is used for decomposing the first light beam to obtain multiple paths of second light beams, and the optical metasurface structure is further used for collimating the multiple paths of second light beams to transmit the collimated multiple paths of second light beams to the optical switching engine; the optical switching engine is used for deflecting the transmission direction of each second light beam in the multiple paths of second light beams so as to obtain multiple paths of output light beams, and the multiple paths of output light beams are used for being output through the output optical fiber array.

The embodiment of the invention provides an optical phased array chip and a laser radar, and the chip comprises a beam splitter which is used for carrying out the beam splitting of an inputted emergent laser beam, and obtaining a plurality of emergent laser sub-beams; the phase shifter is optically connected with the beam splitter and is used for carrying out phase modulation treatment on the emergent laser sub-beams to obtain the emergent laser sub-beams subjected to phase modulation; the optical phased-array antenna array comprises a plurality of optical antennas, and the optical antennas are optically connected with the phase shifter and used for emitting the emergent laser sub-beams subjected to phase modulation to a detection area; and the compensation structure is matched with the optical phased-array antenna array and is used for performing local temperature regulation and control on the optical phased-array antenna array so as to change the effective refractive index of the corresponding optical antennae. According to the application, far-field light spots of the transmitting antenna and the receiving antenna of the laser radar can reach design values, and the accuracy of the laser radar is improved. And the detection performance of the laser radar system is improved.

The disclosure provides an optical system, a semiconductor processing system, and a method for processing a semiconductor wafer. In one example, the optical system includes: (1) a light source configured to provide source light to a source plane to form a plurality of first subbeams, (2) optical elements configured to modify each of the plurality of first subbeams to form a plurality of interrogation spots on a wafer according to a predetermined pattern, wherein the optical elements are further configured to modify each of the plurality of first subbeams upon reflection from the wafer to form a plurality of second subbeams upon an image plane, and (3) a spectrometer configured to receive collected light from the plurality of second subbeams.

The present invention provides a system and method for spectroscopic imaging. In one embodiment, a system includes: a sample stage for holding a sample to be analyzed; a first light source for generating a pulse of infrared light; a second light source for generating a probing beam of infrared light; an optical system to direct the pulses of infrared light and the probing beam of infrared light at the sample, such that a temperature change is induced in an area of the sample. The duration of the pulse of infrared light is shorter than or equal to a cooling time constant of resolution scale inclusions within the sample such that the temperature change is independent of inclusion size. Light detectors are configured to detect light from the sample and digitization electronics convert data from the light detectors into signal data indicative of a chemical composition of the sample.

The invention discloses a lighting module (100), comprising: a light source (101) configured to emit light; a light collector (102) having a reflective surface (1021) configured to collect light rays emitted by the light source (101) and to reflect the light rays into light beams along an optical axis (X) of the lighting module (100); an optical projection system (103) configured to project the light beam; the light type projected by the optical projection system (103) corresponds to the shape of the reflecting surface (1021) of the light collector (102); wherein the reflecting surface (1021) of the light collector (102) further comprises an optical structure (1022), and the optical structure (1022) enables light rays reflected by the optical structure (1022) to be diffused. The invention further discloses a lighting device and a vehicle.

According to some embodiments, a system for fractionated treatment of tissue includes an electromagnetic radiation (EMR) source configured to generate an EMR beam having a transverse annular energy distribution; an optic configured to converge the EMR beam to a focal region located within tissue; and a window assembly at a lower beam of the optics, the window assembly configured to cool the tissue when placed in contact with an outer surface of the tissue.

The embodiment of the application relates to the technical field of optical equipment, and discloses an optical module and a manufacturing method of the optical module, the optical module comprising: a substrate; an active device arranged on the substrate, the active device being used for emitting and / or receiving a light beam; an optical element arranged on the active device in a covering mode; a support arranged on the substrate and surrounding the active device, the support being formed by injection molding; and a lens assembly arranged in a light path direction of the active device and fixedly connected with the support, the lens assembly being used for allowing the light beam to pass through, and an air gap existing between the lens assembly and the optical element. In the manner, the performance of the optical module can be ensured to be not affected.

The invention relates to a motor vehicle lighting device (30) comprising a housing which houses: a first module (31) for emitting a first light beam; a second module (32) for emitting a second light beam extending above the first light beam; a third module (33) for emitting a third segmented light beam extending above the second light beam; and an optical projection system (34); characterized in that the second module (32) is arranged below the first module (31); the third module (33) is arranged below the second module (32), and each of the modules comprises: a plurality of light sources; a light collector (32.11; 32.21) for collecting the light rays emitted by the plurality of light sources and reflecting them as a light beam; a portion (31.12, 31.22, 31.32, 32.12, 32.22, 33.12, 33.22, 33.32) of the optical projection system (34) arranged to project the light beam, said portion forming an image of the light collector (32.11, 32.21).

The invention provides a silicon grating coupler, a preparation method of a stack structure and electronic equipment, and relates to the technical field of optical communication. The silicon grating coupler comprises an optical waveguide, an optical fiber and a stack structure, the stack structure is arranged between the optical waveguide and the optical fiber; the stack structure comprises at least two optical film layers in the vertical direction perpendicular to the optical waveguide placement plane; an optical pattern is etched on the optical film layer; wherein the optical film layer adjusts the optical characteristics of an initial light beam emitted by the optical waveguide based on an optical pattern to obtain an adjusted light beam, and transmits the adjusted light beam to the optical fiber; the optical characteristics comprise at least one of the propagation direction, the divergence angle and the mode profile of the light beam. The optical film layer with the optical pattern is arranged on the stack structure of the rear metal interconnection layer, so that the propagation direction, the divergence angle, the mode profile and the like of the light beam emitted by the optical waveguide are adjusted through the stack structure, shaping and steering of the light beam are achieved, and the quality of the light beam is improved through a low-cost device structure.

The present invention provides an optical system comprising a plurality of transmissive and reflective elements arranged to transmit light of a unique wavelength from a source to an intended destination. The forward propagating beam follows a path through the transmissive elements and towards a droplet. The forward propagating beam is partially reflected on one or more of the transmissive elements and / or the droplet to form a return beam travelling along a path in a generally opposing direction to the forward propagating beam. The optical system further comprises is configured to estimate an amount of stray ghosting light in the return beam.

Various embodiments of the present disclosure relate to a photonic circuit for vector matrix operation. The source pixel is configured to generate a light beam. The optical fan-out structure is configured to produce a plurality of copies of the light beam. A plurality of modulator pixels are configured to transmit the plurality of replicas at individual transmittances, respectively, to produce a plurality of transmitted beams. A plurality of detector pixels are configured to accumulate charge in response to the plurality of transmitted light beams, respectively. A controller is configured to control the source pixel and the plurality of modulator pixels to modulate the intensity of the light beam and the individual transmittances to perform a vector matrix multiplication operation. The intensities are modulated to temporally encode input row vectors, and the individual transmittances are modulated to temporally encode corresponding column vectors of a weight matrix. The embodiment of the invention also provides a method for executing a multiply-accumulate-add (MAC) operation.

The invention provides a pulse laser system and a pulse laser drilling method. The pulse laser system comprises a transmitting module used for providing a pulse laser beam, the pulse width of the pulse laser beam ranges from 50 fs to 500 fs, the repetition frequency of the pulse laser beam ranges from 0.5 GHz to 10 GHz, and the pulse energy of the pulse laser beam ranges from 100 muJ to 1000 muJ; the light beam adjusting module is used for converting the pulse laser beam into a first modulated laser beam; an optical module for converting the first modulated laser beam into a second modulated laser beam; a scanning module for selectively projecting a second modulated laser beam in a projection direction; the focusing module is used for converting the second modulated laser beam into a flat-topped laser beam projected to a workpiece to be drilled; and the monitoring module is used for monitoring the drilling state of the workpiece to be drilled in real time. Therefore, the machining efficiency of the to-be-drilled workpiece can be improved, and meanwhile the damage rate of the to-be-drilled workpiece is reduced.

The present disclosure relates to a multi-focal head-up display (MHUD) system and method to solve a visual fatigue problem generated in a vehicle head-up display and implement an augmented reality (AR) function. The present disclosure provides a multi-focal augmented reality head-up display (MHUD) system including an image projector which generates and emits a plurality of beams, an optical device which guides the plurality of beams emitted from the image projector to individual paths, a polarization control device which controls polarization states of the plurality of beams incident from the optical device, and a plurality of holographic optical elements (HOEs) which receives the plurality of beams emitted from the polarization control device to project a virtual image plane at different focal distances.

The present invention relates to a computer-implemented method of controlling electron beam optics of an X-ray tube during X-ray kVp switching. The method includes receiving (110) a tube voltage (11) and a filament current (12) corresponding to a first time point of an X-ray tube kVp switching cycle; calculating (120) with an X-ray tube emission current model (310), a tube emission current (13) at the first time point, wherein the calculation is based on the tube voltage and the tube filament current; calculating (130) an electron beam focusing current and / or focusing voltage (14) based on the calculated tube emission current (13) and the tube voltage (11); and outputting (140) an electron beam optics control signal (15) based on the calculated electron beam focusing current and / or focusing voltage. The invention also relates to an X-ray imaging system (500) configured to carry out the method.

The invention provides a near-to-eye display system and equipment, and the system comprises an optical-mechanical structure which is used for emitting a display light beam, the optical-mechanical structure at least comprises two optical-mechanical parts which are arranged in an array manner in a first direction, each optical-mechanical part comprises a display branch and an optical modulation branch which are arranged in a second direction, the display branch is used for emitting an image light beam in the second direction, and the optical modulation branch is used for modulating the image light beam in the second direction; the optical modulation branch is used for modulating the image light beam to form modulated light beams, and the display light beam is a combined beam formed by the modulated light beams; the waveguide structure comprises a coupling-in part and a coupling-out part, the coupling-in part is used for coupling in the display light beam to form a coupling-in light beam, and the coupling-out part is used for coupling out the coupling-in light beam to form an imaging light beam; wherein the size of the light-emitting surface of the optical-mechanical part is smaller than that of the coupling-in part, and the first direction intersects with the second direction. Through the arrangement of the plurality of ray machine parts, the exit pupil of each ray machine is smaller, the back focal length can be correspondingly shortened on the basis of realizing the same imaging quality, and the size and the weight of the ray machine are greatly reduced.

A system includes a laser generating source, a downhole assembly, and a plurality of optical pathways extending between the laser generating source and the downhole assembly. The downhole assembly includes a tool housing, a plurality of reflectors, a plurality of reshaping lenses, and a main beam optical assembly. The reflectors are each movable between an activated position and a deactivated position, and are arranged to reflect energy beams radially outward away from the tool housing when in the activated position. The reshaping lenses are arranged to receive and redirect the energy beams when the reflectors are in the deactivated position. The main beam optical assembly is operable to combine the energy beams received from the reshaping lenses into a combined energy beam that is axially directed when the reflectors are in the deactivated position.

The invention relates to the technical field of particle manipulation, in particular to magnetic sensitive optical tweezers and a particle manipulation method. The optical tweezers comprise an excitation source module, a magnetic field excitation and particle capture module and a substrate; the excitation source module generates angular polarized light, the magnetic field is radially polarized, the electric field is tangentially polarized, and the cross section is axisymmetric; in the magnetic field excitation and particle capture module, a gold column serves as the center, an air ring is nested outside the gold column, a gold ring is nested outside the air ring, the gold column and the gold ring are made of metal materials, the air ring is of a hollow structure, and the module is integrated on a silicon dioxide substrate. Angular polarized light covers the outer surface of the gold column and the inner surface of the gold ring to excite loop current, a longitudinal magnetic field component (magnetic focusing) and a hollow tubular light beam (optical potential well) are generated, and micron-sized particle capture, magnetic screening and magnetic conductivity measurement are achieved. The optical tweezers break through the limitation of capturing distance, magnetic field dependence, structural complexity and wavelength adaptability of the existing optical tweezers, and an efficient and universal scheme is provided.

The present invention discloses a motion mechanism for achieving a method for generating optical path differences in large-field-of-view and high-spectral-resolution detection, comprising a first optical mirror, a second optical mirror, a first-mirror spring, a second-mirror spring, and an internal fixed plate. The internal fixed plate, the first-mirror spring, and the second-mirror spring form a spring link, which, together with the first-mirror and second-mirror mounts, forms a door-shaped frame. With the fixed end of the fixed plate as a fulcrum, the mechanism can perform planar motion. A reciprocating driving force is applied to the second-mirror mount, causing the first-mirror spring and the second-mirror spring to produce elastic bending deformation, driving the first and second optical mirrors to perform planar motion in opposite directions at a set speed ratio. During motion, the optical mirror surfaces do not tilt at any angle. The optical path generated by the movement of the second optical mirror is greater for the central beam than for the oblique beam. The relative motion of the first and second optical mirrors causes the paths of the light beams within the optical element to change. The optical path generated by this process is less for the central beam than for the oblique beam. The optical mirror structure and motion speed ratio are designed to ensure that the optical paths of all light beams are consistent, thus achieving a large-field-of-view and high-spectral-resolution.

An optical system includes an optical resonant cavity, an optical source, an optical detector, and a signal processing circuit. The optical source is arranged to provide a source beam of light to be at least partially coupled into the optical resonant cavity. The optical detector is arranged to detect light from the source beam of light after the source beam of light has coupled into the optical resonant cavity to provide a detection signal. The signal processing circuit is configured to communicate with the optical detector to receive the detection signal. The optical resonant cavity has a bioconjugatable lipid membrane on a surface thereof. The bioconjugatable lipid membrane is functionalized to capture a specific biomolecule, and the signal processing circuit is further configured to determine a presence of the specific biomolecule when captured by the functionalized bioconjugatable lipid membrane based on processing the detection signal.

An optical antenna (300; 400; 71) and a communication terminal (70'). The optical antenna (300; 400; 71) comprises a first light source assembly (10) and an optical element (20); the first light source assembly (10) is used for emitting a first light beam towards the optical element (20); the optical element (20) comprises a reflection region used for reflecting the first light beam; the reflection region covers a central region of a first light spot formed by the first light beam on the optical element (20); the optical element (20) further comprises a transmission region used for transmitting a second light beam; and the second light beam is an external light beam. Alternatively, the optical antenna (300; 400; 71) further comprises a second light source assembly (40); the second light beam is a light beam emitted by the second light source assembly (40) towards the optical element (20); the energy distribution of the second light beam is different from that of the first light beam; the transmission region covers a central region of a second light spot formed by the second light beam on the optical element (20); and the optical element (20) is used for combining the first light beam and the second light beam by means of the reflection region and the transmission region. In this way, two light beams are combined by means of energy distribution, and light beam processing can be implemented without depending on the wavelength or polarization characteristics of a light source itself.

A light source, an optical device, and a related apparatus and method. The light source is used for emitting a laser-fluorescence mixed light beam, and the optical device can be applied to the light source. The optical device can emit a fluorescent light beam under the excitation of a first laser beam in the light source, and can also suppress speckles of a second laser beam in the light source, thus facilitating the light source in emitting a fluorescence-laser mixed light beam for suppressing speckles, and also helping to reduce the number of devices in the light source, reducing the size of a projection light source, and meeting the market demand for projector miniaturization.

Provided in the present invention is an all-optical nonlinear activator based on dual-light-beam cavity field modulation, which can be applied to the technical field of optical computing. The activator comprises: an input end, an optical microcavity and an output end, wherein the input end is used for providing an input light beam; the optical microcavity is used for generating resonance, so as to excite and enhance an optical nonlinear effect; and the output end is used for outputting a nonlinearly modulated optical signal. Nonlinear modulation is performed on an optical field in the optical microcavity or on a transmission spectrum of the optical field in the optical microcavity by means of two coherent light beams having a phase difference, thereby forming nonlinear mapping between the light intensity of input light and the light intensity of output light, i.e., an all‑optical self-modulation process. An effective nonlinear operator is provided for all-optical computing, thereby accelerating the convergence of network training and inference, and improving the recognition accuracy of a model in different applications. Further provided in the present invention is an implementation method for the all-optical nonlinear activator based on dual-light-beam cavity field modulation.

A spectrum measurement device includes a scanning light receiver, an optical component, and a processor. The scanning light receiver, on a plane, receives a plurality of light beams of a display image sequentially according to a scanning operation to generate a plurality of input light beams sequentially. The optical component receives the input light beams sequentially and generates a plurality of pieces of processed information. The processor obtains luminance and chromaticity information of the display image according to the processed information.

The application is suitable for the technical field of optical devices, and provides an optical assembly, a laser and a laser processing device. The optical assembly comprises, in sequence along an outgoing light direction, a resonant cavity, an optical diffraction element, a frequency doubling crystal and a Q switch. The resonant cavity is used for emitting a light beam. The optical diffraction element is used for homogenizing the light beam. The frequency doubling crystal is used for modulating the frequency of the light beam. The Q switch is used for adjusting the direction of the light beam to control whether the light beam is emitted. The resonant cavity, the optical diffraction element, the frequency doubling crystal and the Q switch in the embodiment of the application are arranged in sequence along the outgoing light direction, so that the stability of the light beam emitted from the Q switch can be improved.

Embodiments of the present application provide a wavelength selective switch, an optical switching node, and a communication system, for use in reducing the number of devices comprised in the wavelength selective switch, and improving the integration level of the wavelength selective switch. The wavelength selective switch comprises an input fiber, a lens group, a dispersion unit, an optical switching engine, and an output fiber array. The dispersion unit comprises an optical metasurface structure; the input fiber is used for transmitting an input light beam to the lens group; the lens group is used for collimating the input light beam to obtain a first light beam, and transmitting the first light beam to the dispersion unit; the optical metasurface structure is used for splitting the first light beam to obtain multiple second light beams, and is further used for collimating the multiple second light beams to transmit the multiple collimated second light beams to the optical switching engine; and the optical switching engine is used for deflecting the transmission direction of each of the multiple second light beams, so as to obtain multiple output light beams, wherein the output light beams are configured to be output via the output fiber array.