476 results about "Beam delivery" patented technology

The invention discloses a color analyzer which is used for filtering stray light entering a detection path and improving the accuracy of a measurement result. The analyzer comprises a lens, an analyzer main body and a cut-off filter, the lens is connected with the analyzer main body, and the analyzer main body is used for detecting a light beam transmitted from the lens; a beam splitting assembly, a light filtering assembly and an analysis module are sequentially arranged in the analyzer body in the light beam transmission direction, and three light filtering positions are arranged in the analyzer body. The three light filtering positions are located between the lens and the beam splitting assembly, between the beam splitting assembly and the light filtering assembly and between the light filtering assembly and the analysis module respectively, and the cut-off light filter is arranged at any light filtering position or arranged in the lens. When the light beam penetrates through the cut-off filter, stray light in the light beam is filtered out by the cut-off filter, and the stray light is one or more kinds of invisible light.

The invention relates to an edge display diffraction optical waveguide and a design method and application thereof. The diffraction optical waveguide comprises a coupling-in area, a transition area and a coupling-out area which are sequentially arranged along a light beam transmission path. Wherein a light beam transmission path needs to meet a grating vector closing relation, so that after being totally reflected in the diffraction optical waveguide, a light beam incident from the coupling-in region is emitted through the coupling-out region and is imaged in an edge view field region of the diffraction optical waveguide; the width and height of the out-of-coupling area in the eye head-up field are determined according to the eye movement range, the exit pupil distance and the field area; the range of the coupling-in area is determined according to a preset distance between the coupling-in area and the coupling-out area; the range of the turning region is determined according to a k-vector range from the coupling-in region to the coupling-out region and a k-vector range from the coupling-in region to the turning region. According to the invention, the virtual image is presented in the edge view field area without shielding the central view field area, so that not only can good combination of virtual and real scenes be realized, but also the problems of rainbow lines, light leakage and the like can be well avoided.

A laser beam transmission system comprises a laser beam system and a controller that controls the laser beam system. The controller is configured to direct a laser beam at a location nearest to a maximum of an uncertainty area in which a satellite is expected to be located. The controller is configured to move the laser beam from the location to a next location nearest to the maximum of the uncertainty area in response to not receiving a confirmation that the satellite is at the location. The next location becomes a current location for the laser beam. The controller is configured to continue to move the laser beam from the current location to the next location nearest to the maximum of the uncertainty area from the current location in response to not receiving the confirmation that the satellite has received the laser beam.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a physical uplink control channel (PUCCH) resource for a transmission that uses multiple beams in a common time domain resource. The PUCCH resource may include multiple sets of physical resource blocks (PRBs). The UE may transmit uplink control information using the multiple beams in a respective set of PRBs of the multiple sets of PRBs of the PUCCH resource. Numerous other aspects are described.

The invention discloses a back wall damage-free laser hole repairing system for a narrow-cavity structural member. The back wall damage-free laser hole repairing system comprises an ultrafast laser, a light beam transmission system, a light beam shaping system, a light beam focusing system, a coaxial vision system, a three-dimensional motion platform and a computer controller, the ultrafast laser provides femtosecond laser beams for the whole system, the laser beams are transmitted to the beam shaping system after being transmitted by the beam transmission system, and shaped and optimized Bessel beams are obtained. The light beam is focused and shrunk by the light beam focusing system to a micropore on the surface of a target material of the narrow-cavity structural member on the high-precision three-dimensional mobile platform for hole repairing, and the whole hole repairing process is observed by the coaxial visual system. According to the invention, after the required complete cylindrical micro-hole is obtained and processed, the rear wall of the narrow cavity of the narrow cavity structural member is not damaged, the narrow cavity is not damaged during hole repairing only by adopting a light beam process regulation and control means, and the operation is simple and convenient.

An optical module, a laser radar and a terminal are applied to the technical field of detection. The optical module comprises N (N is a positive integer) transmitting ports, N receiving ports, a light beam processing module and a beam expanding module. The N transmitting ports are used for transmitting N transmitting light beams, and the N receiving ports are used for receiving return light beams of the N transmitting light beams. And the light beam processing module is used for transmitting the N emission light beams to the beam expanding module, and deflecting and spreading the N return light beams from the beam expanding module to the N receiving ports. The beam expanding module is used for expanding the N emitted light beams. Wherein the N return light beams are return light beams of the N emission light beams, and the N emission light beams passing through the light beam processing module and the N return light beams from the beam expanding module are coaxial light beams. The optical module is small in overall size, and when the optical module is applied to the detection device, the overall size of the detection device can be remarkably reduced under the condition that the detection performance of the detection device is not reduced.

An optical module, light detection and ranging, and a terminal, which are applied to the technical field of detection. The optical module comprises N (N being a positive integer) transmitting ports, N receiving ports, a beam processing module and a beam expanding module. The N transmitting ports are used for transmitting N transmission beams, and the N receiving ports are used for receiving returned beams of the N transmission beams. The beam processing module is configured to transmit the N transmission beams to the beam expanding module, deflect the N returned beams from the beam expanding module, and propagate the N returned beams to the N receiving ports. The beam expanding module is configured to expand the N transmission beams. The N returned beams are returned beams of the N transmission beams, and the N transmission beams which pass through the beam processing module and the N returned beams from the beam expanding module are coaxial beams. The optical module has a relatively small overall volume, and when the optical module is applied to a detection apparatus, the overall size of the detection apparatus can be obviously reduced without reducing the detection performance of the detection apparatus.

Systems, methods, and computer software relating to gating using non-parallel imaging planes, determining accumulated dose to tissues during radiotherapy with actual beam delivery information, stopping / adjusting / reoptimizing therapy based on such accumulated doses and the generation and use of prognostic motion models and prognostic-motion adapted radiation treatment plans are disclosed.

The invention relates to the technical field of laser micropore processing, and discloses a device for processing a blade film hole by femtosecond laser, which sequentially comprises an infrared femtosecond laser for emitting laser, a blade hole forming device for guiding light and processing laser beams and a blade fixing device for fixing a blade to be processed along a beam transmission path, the blade hole forming device comprises a laser incidence port, a compact scanning galvanometer system for adjusting a laser scanning path, a rotating assembly capable of rotating around an optical axis and used for adjusting the emitting angle of a laser beam, a focusing system for adjusting laser focusing, a light guide assembly for adjusting light beam incidence and a light guide reflection assembly. The lower end of the scanning galvanometer system is connected with the upper end of the rotating assembly, the upper end of the focusing system is connected with the lower end of the rotating assembly, the lower end of the focusing system is connected with the upper end of the light guide assembly, and the lower end of the light guide assembly is connected with the light guide reflection assembly. And the infrared femtosecond laser, the compact scanning galvanometer system and the focusing system are all controlled by the control system. According to the system, blade film hole machining in a complex track can be achieved.

The invention discloses an optical coherence tomography optical path structure and a dispersion compensation method thereof. The light path structure comprises a coherent light source, a 2 * 2 optical fiber coupler, a reference light path, a sample light path, an equal-wave-number spectrograph and an upper computer; low-coherence broadband light emitted by the coherent light source is divided into reference light and sample light after passing through the 2 * 2 optical fiber coupler, the reference light and the sample light are sequentially transmitted in a reference light path and a sample light path, the reference light and the sample light are retroreflected through a sample and a reference mirror and are retroreflected to the 2 * 2 optical fiber coupler according to an original light path, interference is generated, and interference light beams are transmitted to the equal-wave-number spectrometer. Interference light beams are split to an upper computer according to equal wave number intervals, and a tomographic image of a sample is obtained through algorithm processing of the upper computer. By means of the structure, the existing dispersion loss problem is solved from the source, most dispersion generated by a light path is solved, other dispersion is eliminated by adding a dispersion compensating mirror made of optical glass materials with certain thickness in the light path through algorithm calculation, the algorithm is simple, convenient and fast, and the imaging speed is high.

The present relates to device for ultra-high dose rate radiation treatment to a patient, comprising: —a radiation source for providing a radiation beam, and—a linear accelerator for accelerating said radiation beam until a predetermined energy, and—a beam delivery module for delivery the accelerated radiation beam. The device is arranged for generating an accelerated radiation beam having a predetermined energy between about 50 MeV and about 250 MeV, to deliver rate radiation dose of at least 10 Gy, during an overall time less than about 200 ms in order to generate a radiation field for treating a target volume of at least about 30 cm3, with said ultra-high dose rate radiation dose and / or a target volume located at least about 5 cm deep in the tissue of the patient with said ultra-high dose rate radiation dose.

The invention discloses a non-transmission surface liquid film multi-parameter synchronous imaging device based on an absorption spectrum and a measuring method. The imaging device comprises a laser emitting unit; the laser coupling unit is connected with the laser emitting unit; the laser attenuation unit is connected with the laser coupling unit; the laser diffusion unit is arranged on a light beam transmission path of the laser attenuation unit and is used for diffusing the diameter of the coupled light beam to an incident light beam with a preset size; the non-transmission flat plate is used for bearing a liquid film to be detected; the laser splitting unit is arranged at a position through which the incident light beam and the reflected light beam pass, and can enable the reflected light beam to penetrate to form a transmitted light beam; the imaging unit is used for receiving the transmission light beam and converting the transmission light beam into a grayscale image; and the computer is connected with the imaging unit and is used for receiving the grayscale image transmitted by the imaging unit and processing a two-dimensional distribution image of the liquid film parameters. The device can solve the two-dimensional distribution information of at least one liquid film parameter with high precision.

Embodiments of the present disclosure relate to two-step beam geometry optimization and non-isocenter beam incidence angles. Systems and methods are disclosed for optimizing a processing plan using all degrees of freedom, including degrees of freedom associated with beam geometry parameters, the optimization including the step of limiting a search space for the beam geometry parameters using a trained machine learning model, also disclosed are systems and methods for obtaining beam geometry parameters for processing plans that do not require decentration of the beam delivery device isocenter.

The embodiment of the invention discloses a camera module, electronic equipment and a related anti-shake method. The camera module comprises an anti-shake assembly, one or more light path elements and an imaging assembly, wherein the one or more light path elements and the imaging assembly are sequentially arranged in the light beam transmission direction. Wherein the imaging assembly comprises a first image sensor and a second image sensor, and the anti-shake assembly is connected with at least one of the one or more light path elements; the first image sensor is used for detecting a first jitter amount of the camera module; the anti-shake assembly is used for driving at least one light path element in the one or more light path elements to perform shake compensation based on the first shake amount; and the second image sensor is used for performing optical imaging. By adopting the embodiment of the invention, the optical anti-vibration performance of the electronic equipment can be improved, and the user experience is improved.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a beam failure recovery (BFR) message that indicates beam failure of a transmit receive point (TRP) among multiple TRPs and that includes a TRP identifier for the TRP and an index for a new beam. The UE may receive, in response to the BFR message, a physical downlink control channel communication. The UE may set the new beam for the TRP for one or more channels or reference signals that share a unified transmission configuration indicator state with a channel or a reference signal associated with the index. The UE may transmit or receive a communication using the new beam. Numerous other aspects are described.

The invention provides a structured light detection system and method based on photon-level single-pixel wavefront imaging, and belongs to the technical field of wavefront imaging. The problem of low detection sensitivity of a single-pixel wavefront imaging technology in extreme environment communication is solved; comprising a structured light generation module, a light beam transmission module and a structured light detection module, the structured light generation module is used for generating structured light carrying different topological charges, the structured light is remotely transmitted to the structured light detection module through the light beam transmission module, and the structured light detection module is based on a coaxial phase-shifting interference wavefront imaging principle. A long-distance transmitted structured light signal is processed by adopting a single photon detection technology and utilizing a digital micromirror device and a Hadamard mask modulation technology; according to the method, under 50m long-distance transmission, each mask only needs 30 photons on average to complete topological charge identification, the structured light identification accuracy can reach 96% or above, and the method is suitable for structured light detection under ultra-long-distance and extremely-weak light conditions.

The utility model relates to a photoetching lens and a photoetching machine, which comprise a first lens group and a first reflecting mirror which are sequentially arranged along the direction of a first optical axis, and a second reflecting mirror, a second lens group and a third lens group which are sequentially arranged along the direction of a second optical axis, and after being reflected by the first reflecting mirror to pass through the second lens group in the forward direction, the light is reflected by the second reflecting mirror to pass through the second lens group in the reverse direction, and then passes through the third lens group to converge to an imaging surface. The structure of the photoetching lens has excellent imaging performance, a larger view field can be realized, and large-area photoetching pattern processing can be directly realized, so that the problem that the view field of the existing photoetching lens is small is solved; besides, a reflective structure is adopted, so that the light beam passes through the second lens group twice in the forward and reverse directions, the number of lenses is reduced by half while the transmission distance of the light beam is ensured, and therefore, the volume of the photoetching lens is effectively reduced, and the cost of the photoetching lens is reduced.

The invention discloses a physical model discovery and reconstruction method for light beam transmission characteristics based on a sparse physical information neural network, and belongs to the technical field of nonlinear optics and deep learning intersection, and the method comprises the following steps: S1, making a sparse and low-fidelity data set; s2, establishing a candidate function library of items possibly existing in a data back model by using automatic differentiation; S3, constructing a physical information neural network model with sparse regression to discover a physical model structure; s4, coefficient fine tuning is carried out on the found physical model, and high-fidelity data is reconstructed.The method is suitable for model discovery of light beam transmission data supported by a constant coefficient or variable coefficient partial differential equation, scarce and noisy low-fidelity data can be utilized, and high-fidelity data can be obtained. A simple physical model is found according to a physical information neural network and sparse regression, and a light beam transmission dynamic process is reconstructed, so that subsequent theoretical analysis and research on light beam transmission characteristics are facilitated.

The invention discloses a light field regulation and control system and method based on laser array coherent combination. A laser array generation module is used for outputting a high-power array light beam; a spatial beam-shrinking light path in the light field regulation and control module samples an array light beam and carries out beam-shrinking processing, so that the light field area of the array light beam after beam-shrinking can be matched with the effective target surface size of spatial light modulators, and the two spatial light modulators respectively regulate and control the phase and polarization of two cross-polarization components of the array light beam after beam-shrinking. The regulated light beam is transmitted to a phase and polarization locking loop; and the phase and polarization locking loop generates a phase control signal and a polarization control signal according to the regulated light beam output by the light field regulation module, and applies the phase control signal and the polarization control signal to a phase modulator and a polarization controller of each path of unit laser in the laser array generation module, so that phase and polarization locking of the high-power array light beam is realized. According to the invention, flexible light field regulation and control of far-field synthetic light spots of the array light beams can be realized.

Systems, methods, and computer software relating to gating using non-parallel imaging planes, determining accumulated dose to tissues during radiotherapy with actual beam delivery information, stopping / adjusting / reoptimizing therapy based on such accumulated doses and the generation and use of prognostic motion models and prognostic-motion adapted radiation treatment plans are disclosed.

The invention discloses a laser beam position and direction measuring and calibrating device and method. The laser beam position and direction measuring device comprises a measuring box body, and a main light path, a beam position stability measuring device and a beam direction stability measuring device are arranged in the measuring box body; the main light path comprises a first lens and a beam splitter, a laser beam to be measured is transmitted to the beam splitter through the first lens, and the laser beam to be measured is divided into a first light beam and a second light beam through the beam splitter; the light beam position stability measuring device comprises a second lens, a first light source conversion element, a first imaging lens group and a first light beam detector which are sequentially arranged along the transmission direction of the first light beam; and the light beam pointing stability measuring device comprises a third lens, a second light source conversion element, a second imaging lens group and a second light beam detector which are sequentially arranged along the transmission direction of the second light beam. The device solves the problem that the measurement of the position stability and the pointing stability of the laser beam cannot meet the long-term measurement requirement.

The present disclosure a method of transmitting a signal by a user equipment (UE) in a wireless communication system, the method comprising: mapping data to a symbol having a first phase value; determining a beam direction for the data, the UE comprising an antenna array composed of a plurality of antenna elements, and a phase value of each of the plurality of antenna elements being determined based on the determined beam direction; determining each antenna element indication value corresponding to each of the plurality of antenna elements based on the phase value of each of the plurality of antenna elements; generating a beam for data transmission based on each antenna element indication value; and transmitting the data through the generated beam.

The invention discloses an LCOS optical illumination system for an AR-HUD projection unit, and belongs to the field of photoelectric illumination and display technologies. The system comprises an illumination light source, a collimating lens, a fly-eye lens, an optical diffuser, a wavelength selective light combination element, a polarized light conversion device, a relay lens, a PBS prism and an LCOS display chip. The illumination light source is a three-color LED light source and is composed of a red light LED, a green light LED and a blue light LED. After red primary light, green primary light and blue primary light are collimated by the collimation system, the light parallelism is optimized, the collimated light sequentially passes through the light diffusion element to optimize the light field uniformity and the fly-eye lens to eliminate the non-uniform illumination, then is unified into a single linear polarization state by the polarized light converter, is shaped by the relay system and keeps the light beam transmission quality, and finally is transmitted to the light source. And polarization state separation and light combination are realized through the PBS prism, and finally, the light is accurately coupled to the LCOS display chip, so that high-efficiency polarization state matching and imaging quality optimization are completed. According to the HUD-PGU system, the illumination brightness of the whole system is improved, the color reducibility of the system is improved, the illumination uniformity of system imaging is improved, the light energy utilization rate of the system is improved, meanwhile, the size of the HUD-PGU is reduced, and the manufacturing cost is reduced.

The present invention discloses a laser hole repair system for narrow cavity structural parts without back wall damage, including an ultrafast laser, a beam transmission system, a beam shaping system, a beam focusing system, a coaxial vision system, a three-dimensional motion platform and a computer controller; the ultrafast laser provides a femtosecond laser beam for the entire system, and after the laser beam is transmitted through the beam transmission system, the beam is transmitted to the beam shaping system to obtain a Bessel beam after shaping optimization, and the beam is then focused and contracted by the beam focusing system to the micropores on the surface of the target material of the narrow cavity structural part on the high-precision three-dimensional mobile platform for hole repair, and the whole hole repair process is observed through the coaxial vision system. The present invention obtains the required complete cylindrical micropores and the back wall of the narrow cavity structural part after processing is not damaged. Only the beam process control means are used to achieve the narrow cavity without back wall damage during hole repair, and the operation is simple and convenient.

The invention provides a method and a device for testing optical fiber coupling efficiency in space optical communication, and belongs to the field of space optical communication. Comprising a light source generation module used for generating a test light beam; the turbulence simulation module is used for simulating the influence of external field turbulence on light beam transmission; the phase difference correction module is used for correcting a low-order phase difference caused by system installation and adjustment or platform vibration and the like and compensating other phase differences caused by phase differences of optical devices; the optical fiber coupling module is used for coupling the spatial light to an optical fiber and determining optical power; and the control module is used for controlling the turbulence simulation module and the phase difference correction module and determining the optical fiber coupling efficiency according to the optical power of the test light beam. By means of the device, a quantitative relation model between the single influence factor and the optical fiber coupling efficiency can be determined with high precision.

The invention discloses a Raman-meter temperature and humidity laser radar detection system with three wavelengths and eight channels. The Raman-meter temperature and humidity laser radar detection system comprises a transmitting system, a receiving system, a data acquisition and processing system and a computer control system. Laser signals with the wavelengths of 355 nm and 532 nm are combined with a dynamic background light intensity adjusting mechanism, so that the signal sensitivity under the conditions of strong background light in the daytime and low background light at night is ensured. The light splitting module adopts a high-performance narrow-band optical filter and a multilayer medium coated dichroic mirror which are arranged at a preset inclination angle and cooperate with an achromatic lens group of the collimation system, so that efficient light beam transmission and accurate separation of multi-wavelength signals are realized, spectral crosstalk is remarkably reduced, and the system detection precision, the environment adaptability and the data processing reliability are improved; the method is suitable for all-weather and multi-scene atmosphere detection.

The invention relates to the field of ultrafast laser, and discloses a nonlinear femtosecond pulse energy self-stabilizing device. Comprising a nonlinear self-phase modulation module, a reflector, a grating, a lens and a filter which are arranged in sequence, and the nonlinear self-phase modulation module, the reflector, the grating, the lens and the filter form a light beam transmission path; the nonlinear self-phase modulation module comprises a conical lens, a low-dispersion lens and a nonlinear medium; the reflecting mirrors are reflecting mirrors with consistent reflection spectrums; the grating is used for expanding a spectrum carrying energy fluctuation information in a spatial domain to form frequency domain spatial distribution related to energy; the lens is used for focusing or collimating the light beam expanded by the grating; the filter is a liquid crystal filter and is used for dynamically setting a filtering range; abnormal disturbance in the light path is identified by using the generative adversarial network, and a compensation strategy is generated; the abnormal disturbance comprises sudden mechanical vibration and nonlinear coefficient mutation at the initial stage of medium damage.

The invention discloses a light source unit, an eyeball tracking system and a control method thereof, and the light source unit comprises at least one light source, a light beam splitter and a phase modulator. The light source is used for emitting illumination beams; the light beam splitter is located in a transmission light path of the illumination light beam and used for carrying out n beam splitting on the illumination light beam to form split light beams, and n is larger than or equal to 2; and the phase modulator is positioned in a light path for transmitting the split light beam, is used for modulating the angle of the split light beam to irradiate the eye area of the user, and is also used for modulating the phase of the split light beam to interfere and overlap in the eye area of the user so as to provide illumination for the eye area of the user. Therefore, in a limited number of light sources, the light supplementing brightness of the eye area is effectively improved, the utilization rate of the light sources is improved, the light source power of the supply system is further reduced, and due to precise dimming of the phase modulator and the increase of the illumination distance, the eye tracker with the gradually increased frame rate and the gradually increased eye box movement range can be better adapted.

The embodiment of the invention discloses a wavelength switching device, an optical switching method and related equipment, which can effectively reduce the volume of the wavelength switching device and improve the integration level of the wavelength switching device. An input port of the wavelength switching device transmits an input light beam to a dispersion module of the wavelength switching device; the dispersion module disperses an input light beam to obtain multiple sub-light beams and transmits the sub-light beams to the redirection module of the wavelength exchange device; the redirection module splits the first sub-beam to obtain a service sub-beam and a detection sub-beam based on the light splitting function, and the first sub-beam is one of the multiple sub-beams; the redirection module is also used for transmitting a service sub-beam to an output port of the wavelength switching device and transmitting a detection sub-beam to a first detection module of the wavelength switching device based on a redirection function; the first detection module is used for detecting transmission of the first sub-beam according to the detection sub-beam.

An optics-integrated confinement apparatus is provided. The optics-integrated confinement apparatus includes a first substrate, a plurality of electrical components formed on the first substrate, and an on-chip beam delivery system. The plurality of electrical components define a confinement apparatus configured / operable to confine one or more quantum objects. The on-chip beam delivery system includes a waveguide, a coupler, and an optical element. The coupler is configured to couple an optical beam out of the waveguide and toward the optical element. The optical element is configured to modify a polarization of the optical beam and direct the optical beam toward a target location defined by the optics-integrated confinement apparatus.