1643 results about "Collimator" patented technology

The invention discloses a wireless optical communication alignment system and a capture alignment method thereof, and relates to the technical field of optical communication, and the method comprises the steps: a three-dimensional holder carries out the coarse alignment of an optical path between a transmitting end and a receiving end according to the direction of beacon light; an alignment device located at the top of the three-dimensional holder carries out fine alignment on the light path; the alignment device comprises a two-dimensional alignment structure, a control circuit and a device shell. The control circuit captures a light intensity feedback value of the light intensity sensor of the two-dimensional alignment structure, and adjusts an azimuth angle and a pitch angle of the optical fiber collimator of the two-dimensional alignment structure according to the light intensity feedback value so as to adjust lens orientations of the transmitting end and the receiving end; the device shell provides a supporting platform for the two-dimensional alignment structure and the control circuit and is connected with the three-dimensional holder. Coarse alignment and fine alignment are combined, accurate angle adjustment is achieved through light intensity feedback, efficient alignment of light paths of the transmitting end and the receiving end is ensured, meanwhile, the device shell provides stable support and connection, and the stability and reliability of the alignment process are guaranteed.

The invention relates to the technical field of laser processing, in particular to a laser light path rapid switching method and related equipment. The laser light path fast switching method comprises the steps that a single laser emits original laser, the original laser passes through a laser collimator or directly enters a multi-channel reflecting mirror set to adjust a transmission path, a beam expander is selectively started for beam expanding according to the machining requirement, a preliminary shaping light beam is formed, and a basic light path matched with a follow-up optical device is constructed. According to the invention, through the integrated driving mechanism and grating ruler full-closed-loop control rapid switching device, the mobile carrier pre-installed with multiple DOEs is driven to realize accurate cutting-in of a target light spot element in a light path, and the problem of rapid adaptation of multiple light spot patterns in a single laser system is solved.

The invention relates to the technical field of laser ranging, in particular to a double-optical-comb hybrid ranging device which comprises a signal detection optical path system and a signal demodulation optical path system. Wherein the signal detection optical path system comprises a first optical frequency comb, a first optical isolator, a first optical collimator, a first beam splitter prism, a reference mirror, a Faraday rotator, a convergence mirror and a target reflector; the signal demodulation optical path system comprises a second optical frequency comb, a second optical isolator, a second optical collimator, a half-wave plate, a second beam splitter prism, a third beam splitter prism, a first polarization controller, a first photoelectric detector, a reflector, a polarization beam splitter prism, a second polarization controller and a second photoelectric detector. A third polarization controller; and a third photoelectric detector. According to the invention, three ranging technologies of asynchronous optical sampling ranging, multi-heterodyne interference ranging and synthetic wavelength ranging are fused, and the problem that a large ranging range and high ranging precision cannot be simultaneously considered in the ranging process is solved.

The invention discloses a calibration device with a spectrum self-calibration function and a high-resolution spectrum calibration method thereof. The device comprises a narrow-band light source, a broadband light source, an optical fiber isolator, a coupler, an interference system, a multi-way switch, an FP (Fabry-Perot) cavity, a collimator, an orthogonal dispersion system and a computer, wherein the orthogonal dispersion system consists of a cylindrical lens, a reflector, a virtual phase array, a grating, a focusing lens and an industrial camera; according to the device, different light source paths are gated, FP cavity modulation and orthogonal dispersion system light splitting are utilized, and an industrial camera is combined to receive light signals. According to the method, the mapping relation between pixels and wavelengths can be established, the two-dimensional spectrum is compressed into the one-dimensional calibration spectrum through light intensity modulation and normalization processing, the calibration process of the orthogonal dispersion system is simplified, and the measurement precision is improved; and system drift can be compensated in real time through self-checking calibration, and the reliability of a measurement result is ensured, so that accurate calibration and measurement of a high-resolution spectrum can be realized.

The invention discloses a parallel imaging OCT (Optical Coherence Tomography) system based on a metasurface area array, which relates to the technical field of medical instruments, is small in size and can realize intraocular single-shot area array imaging and a three-dimensional position depth perception function by using metasurface and optical coherence tomography imaging information in a sample tissue with a limited size. According to the technical scheme, a light beam emitted by a laser is divided into two paths through a beam splitter, and the two paths enter a sample arm module and a reference arm module respectively; the sample arm module is a probe and comprises a multi-core optical fiber and a first metasurface; the reference arm module comprises a collimator, a motor and a right-angle reflector; the probe enters a sample tissue, a light beam is focused on the sample tissue and then is backscattered, the backscattered light beam reversely passes through the first metasurface, the multi-core optical fiber, the beam splitter, the second metasurface, the third lens, the grating and the focusing lens and then forms a spectral line beam on the CCD sensor, and the computer reads a signal from the CCD sensor and performs three-dimensional reconstruction imaging on the sample tissue.

The invention discloses a quick mounting method for an assembly type prefabricated column. The quick mounting method comprises the steps that S1, a working face is prepared; s2, component hoisting: when the prefabricated column is adjusted to be 200-300mm away from the ground by a crane, trial hoisting is performed, a component hoisting appliance is adjusted to be horizontal, and after each hoisting point is uniformly stressed, the corresponding component is hoisted to a construction position; s3, a collimator is installed and calibrated, the collimator is adsorbed to the prefabricated column reinforced concrete structural surface, a laser horizontal positioning module on the collimator is started, and the laser horizontal emission state is automatically calibrated through an electronic level meter; s4, pre-positioning the prefabricated part, hanging the prefabricated column to a position 200mm away from the mounting surface, pausing the prefabricated column, and preliminarily adjusting the direction of the column body on the basis of the set mounting reference control line, so that the mounting reference control line is preliminarily aligned with the laser beam; and S5, accurately positioning and adjusting the prefabricated part, observing the overlap ratio of the mounting reference control line and the laser beam by an operator, finely adjusting the spatial position of the prefabricated column, and mounting and fixing when the mounting reference control line completely coincides with the laser beam.

The invention relates to the technical field of radiation therapy, in particular to a boron neutron capture therapy beam shaping device and a boron neutron capture therapy system. The beam shaping device for boron neutron capture therapy is used for beam shaping of a DT neutron tube generator. The interior of the beam shaping device is provided with a particle beam channel, and the particle beam channel is used for generating an initial neutron source through an incident proton beam. The beam shaping device comprises a value-added layer, a moderator, a filter layer, a reflecting layer, a collimator and a shielding layer, wherein the value-added layer, the moderator, the filter layer and the collimator are sequentially arranged from a target material to an outlet. And the axes of the particle beam channel, the value-added layer, the moderator and the collimator coincide. According to the beam shaping device, 14Mev high-energy neutrons from the DT neutron tube generator are shaped into hot / slow neutron beams meeting the BNCT treatment requirements, and impurities of fast neutrons and gamma rays are reduced to the maximum extent, so that the dosage precision and biological selectivity of treatment are effectively improved.

The utility model discloses a collimator for optical instrument parallelism adjustment, which relates to the technical field of optical instrument detection equipment and comprises a laser generator and a cylinder fixedly connected to the output end of the laser generator, a frame is slidably connected to the inner arc wall of the cylinder, and a convex lens is coaxially arranged on the inner side of the frame. The outer arc wall of the convex lens is slidably connected with four fixing seats which are distributed in an annular array, and the ends, away from the convex lens, of the fixing seats are rotatably connected to the inner arc wall of the frame body; according to the utility model, the deflection angle of the lens is adjusted through the plurality of first adjusting knobs, the direction of a light beam output by the laser generator after being refracted by the lens can be finely adjusted, so that the light beam can more accurately point to a target position, and the second adjusting knob enables the lens to axially move so as to adjust the focusing position of the light beam. It is ensured that the light beam forms a clear focus at the target position, meanwhile, the adjustable lens can eliminate light beam deflection caused by manufacturing or assembling errors, and therefore the adjustment and calibration precision is improved.

An inspection portal includes a first x-ray source configured to emit a first beam, a first backscatter detector configured to detect backscatter from the first beam, a second x-ray source configured to emit a second beam, a second backscatter detector configured to detect backscatter from the second beam, and at least one first collimator and at least one second collimator, each oriented to detect backscatter from the associated beam and to block scatter from the other beam. The first and second backscatter detectors are configured to weight signals acquired using each of their detector element based on the first and second beams. The first backscatter detector is configured to use signal processing techniques to mitigate crosstalk due to scatter from the second beam, and the second backscatter detector is configured to use the signal processing techniques to mitigate crosstalk due to scatter from the first beam.

The invention discloses a spiral resonance photoacoustic cell and an operation method, the spiral resonance photoacoustic cell comprises a gas chamber straight tube, a spiral tube, an optical fiber collimator and an optical fiber F-P sonic sensor, the two ends of the gas chamber straight tube are open, the two ends of the spiral tube are communicated with the gas chamber straight tube, an acoustic resonance point is formed at the center of the spiral tube, and the optical fiber F-P sonic sensor is arranged in the central area of the spiral tube; and the optical fiber collimator is arranged at one end of the air chamber straight pipe. The spiral pipe is wound outside the air chamber straight pipe, the spiral pipe is communicated with the air chamber straight pipe, the structural design of the spiral pipe enables the spiral pipe to form acoustic resonance at a specific frequency, and the optical fiber F-P sonic sensor obtains a photoacoustic signal; compared with a conventional resonance photoacoustic cell, the physical volume of the resonance photoacoustic cell is greatly compressed, and the system integration level is effectively improved. More importantly, under the condition that a compact appearance similar to that of a non-resonant photoacoustic cell is kept, the device amplifies the photoacoustic signal intensity by several times through an acoustic resonance effect, and the detection sensitivity and the signal-to-noise ratio of the system are remarkably improved.

The invention relates to the technical field of optical communication equipment testing, in particular to an integrated optical module multi-parameter testing system and method.The method comprises the steps that a multi-channel parallel testing unit synchronously collects light spot morphology, divergence angles, insertion loss and return loss space and transmission characteristic parameters through a transmission light path and a reflection light path; the parameter collaborative analysis module performs nonlinear correlation analysis and dynamic performance threshold evaluation based on a cross-dimension correlation model; the intelligent calibration engine dynamically adjusts the test benchmark and compensation parameters according to the environment temperature and the equipment aging attenuation model; the fault diagnosis and prediction unit identifies potential defect types of the collimator, constructs a performance degradation prediction model in combination with a working state and environmental stress, and predicts a performance evolution trend according to test data; and the test report generation module automatically generates a standardized and customized dual-mode test report, a quality grade label and a performance optimization suggestion according to the prediction result and the diagnosis conclusion. Therefore, the problems of poor test precision, low test efficiency and the like in the prior art are solved.

The invention relates to the technical field of photoacoustic spectrometry, in particular to a gas detection device and method based on a 3D printing Helmholtz photoacoustic cell, and is suitable for the fields with load requirements such as unmanned aerial vehicle-mounted gas monitoring platforms. In order to overcome the problems of large volume, heavy weight, complex structure and low integration level of a photoacoustic gas sensor in the prior art, the lightweight Helmholtz photoacoustic cell structure manufactured based on 3D printing comprises a sound wave generation cavity, a small-diameter connecting pipe and a detection cavity which are integrally formed, an optical reflection unit is integrated in the sound wave generation cavity, and the optical reflection unit is integrated in the detection cavity. Two concave reflectors are arranged to reflect incident light beams for 160 times, a laser, an optical fiber collimator, a pre-amplifier, a lock-in amplification circuit board, a notebook computer and a current temperature control module are arranged outside, and the concentration of gas to be detected is obtained through analysis and processing of the notebook computer.

The invention relates to the technical field of optical detection, and particularly provides a mirror surface detection method for a large-aperture spliced telescope, which comprises the following steps of: emitting light from a focus position by using a light source, reflecting the light through a mirror surface of the large-aperture spliced telescope to enter a discrete lens arranged at the rear end, and splitting the light by using a spectroscope to obtain a split light beam; the first light beam enters the camera to obtain interference fringes of the splicing seams, the second light beam enters the optical switch to carry out aperture coding, and the mirror surface precision of the large-aperture spliced telescope can be determined according to the code of each splicing seam and the confocal and co-phase information of the sub-reflectors on the two sides of the splicing seam. According to the invention, splicing seam detection is carried out through focus reverse auto-collimation, the problem that an oversized collimator is needed traditionally is avoided, point-by-point detection is carried out on the sub-reflectors according to the splicing seam, and confocal and co-phase detection of the adjacent sub-reflectors is realized according to interference fringes.

The invention relates to a bidirectional magnetic field loss fast ion detector for a magnetic confinement fusion device, which comprises a clockwise collimator, an anticlockwise collimator, a scintillator sheet, a detector main body, a graphite shell and a light path connecting sheet, and is characterized in that the clockwise collimator and the anticlockwise collimator are symmetrically arranged at two sides of the detector main body, the scintillator sheet is arranged in the detector main body, and the graphite shell is arranged in the detector main body. The graphite shell is arranged outside the detector body in a sleeving mode, the clockwise collimator and the anticlockwise collimator each comprise a collimator front portion and a collimator rear portion, a fixing groove is formed in the collimator rear portion, a collimator rear hole is formed in the fixing groove in a penetrating mode, the collimator front portion is detachably installed in the fixing groove, and the collimator rear hole is detachably installed in the fixing groove. A cavity communicated with the fixing groove is formed in the collimator front portion, a collimator front hole is formed in the cavity in a penetrating mode, one end of the light path connecting piece is connected with the detector body, and the other end of the light path connecting piece is connected with the rear-end light path pipeline. The device can adapt to a bidirectional annular magnetic field, the upgrading cost is reduced through the modular design, and stable installation can be provided for the scintillator.

The invention discloses an image rotation detection and image rotation elimination adjustment method applied to a laser communication optical system, belongs to the technical field of space laser communication, and solves the problem that the space layout compactness, link energy transmittance and the like of the laser communication system are influenced by adopting a traditional rotation elimination device such as a Dove prism and a K mirror. The positions and angles of the left side collimator and the right side collimator are respectively adjusted to realize coaxial and detection reference transmission; placing the detected laser communication system between the two collimators, and adjusting a rotary table pitch angle of the laser communication system to enable a telescope of the laser communication system to be respectively aligned with the two collimators; extracting and recording light spot centroid coordinates of laser emitted by the two light tubes focused on the area-array camera of the laser communication system; calculating to obtain an image rotation angle; and adjusting the angle of a plane mirror in the laser communication system and carrying out iterative detection until the image rotation angle is reduced to meet the design requirement, thereby completing the adjustment work of the image rotation of the pitch axis of the detected laser communication system.

The invention discloses an ultra-wide thin-wall tunnel roof deformation monitoring device based on laser ranging, and relates to the technical field of laser measurement, the ultra-wide thin-wall tunnel roof deformation monitoring device comprises an industrial camera and a mounting seat, a laser is fixedly mounted on the mounting seat, a mounting bracket is mounted at the bottom of the mounting seat, and a protective shell is fixedly mounted on the mounting seat. A light beam collimator is fixedly installed on the laser device, and a beam splitting assembly is fixedly installed in the protective shell and used for equally dividing a light source emitted by the laser device into two laser beams. The tunnel section deformation monitoring method has the advantages that high-precision and high-efficiency deformation monitoring can be performed on the tunnel section, the problems of time desynchrony and optical distortion existing in a traditional method are effectively solved, and meanwhile, the adaptability and data reliability in a severe environment are remarkably improved; and reliable technical means and equipment support are provided for structural health assessment of the ultra-wide thin-wall tunnel top arch.

The invention relates to the technical field of gas sensing, and discloses a photoinduced thermoelastic spectrum gas concentration detection device and method based on an annular absorption cell, and the device comprises a light source system which is used for generating and outputting a wavelength-modulatable laser beam; the laser absorption system comprises an integrated annular absorption cell, an optical fiber collimator and an optical convergence lens, a laser window is arranged on the side wall of the integrated annular absorption cell, and after being input into the optical fiber collimator, a laser beam enters the integrated annular absorption cell through the laser window; after being reflected for multiple times, the light is emitted from the laser window and then enters the optical converging lens; the signal detection system is used for detecting the intensity of the emergent light focused by the optical converging lens and converting the intensity into an electric signal; and the data processing system is used for demodulating the electric signal generated by the signal detection system and inverting the concentration of the gas to be detected. The method corresponds to the device. According to the invention, the detection stability and the detection sensitivity are improved.

The invention provides a spherical prism optical axis deflection angle detection device which is provided with a base and a supporting structure and comprises a transmission-type coaxial eccentric detection light path and a transmission-type non-coaxial eccentric detection light path. Wherein the transmission-type coaxial eccentric detection light path comprises a collimator, an objective table and a photoelectric centering instrument; the transmission-type non-coaxial eccentric detection light path comprises a photoelectric autocollimator, an objective table and a photoelectric centering instrument; and the two detection light paths share the objective table and the photoelectric centering instrument. The invention also provides a spherical prism optical axis deflection angle detection method, which comprises the following steps of: firstly, selecting a detection light path, then calibrating and calibrating the detection light path, and finally finishing the detection work by using the selected detection light path. The system is designed to be a double-light-path detection system, and detection of the deflection angle of the optical axis of the spherical prism is achieved.

Direct-bonded lamination for improved image clarity in optical devices is provided. An example process planarizes and plasma-activates optical surfaces to be laminated together, then forms direct bonds between the two surfaces without an adhesive or adhesive layer. This process provides improved optics with higher image brightness, less light scattering, better resolution, and higher image fidelity. The direct bonds also provide a refractory interface tolerant of much higher temperatures than conventional optical adhesives. The example process can be used to produce many types of improved optical components, such as improved laminated lenses, mirrors, beam splitters, collimators, prism systems, optical conduits, and mirrored waveguides for smartglasses and head-up displays (HUDs), which provide better image quality and elimination of the dark visual lines that are apparent to a human viewer when conventional adhesives are used in conventional lamination.

The invention relates to the technical field of lens module detection, in particular to lens module EOL detection equipment and method, and the equipment comprises a four-station turntable mechanism which is provided with a plurality of bearing test seats for placing lens modules after code scanning; and a plurality of functional modules arranged around the four-station turntable mechanism, wherein the functional modules comprise a surface light test module for optical test, a white field detection assembly, a collimator test module and a black field test assembly. By integrating a multi-station automatic detection process, multiple performance detections such as electrical test, definition, color, signal-to-noise ratio, FOV angle of view, COD decentration, white balance, dark corner, stain and black field of the lens module can be synchronously completed, the coverage of detection items is comprehensive, and compared with traditional equipment only performing white field or black field detection, the full-automatic lens module detection equipment has the advantages that the full-automatic lens module detection equipment is simple in structure and convenient to operate.

The invention is applicable to the technical field of marine oil and gas resource exploration, and provides an intelligent monitoring system and method for carbon isotopes of wellbore gas, the system comprises an explosion-proof shell, and further comprises a gas pretreatment module for removing impurities affecting CH4 and C2H6 gas spectral lines and adjusting temperature and pressure of measured gas; the optical cavity detection module comprises a laser, a collimator, a detector and an MPC, and is used for completing the energy level excitation of the infrared light to the gas to be detected, the injection of a detection light source into the MPC from the laser, the multiple reflection of the detection light in the MPC, the built-in multi-beam laser light source, and the absorption detection of the multi-component gas through a single optical cavity; and the data processing module is used for collecting, processing, displaying and outputting the measured data in real time. The system is high in detection precision, high in environmental adaptability, high in response speed and miniaturized in equipment, and has a wide market prospect.

An MEMS optical fiber surface-mounted strain gauge, configured to be fixed on the surface of an object to be measured to measure the strain of the object under a particular loading condition. The strain gauge is provided with a left side fixing part (1), a right side fixing part (2) and a quadrilateral structure (3) arranged between the left side fixing part (1) and the right side fixing part (2). The quadrilateral structure (3) is connected to the left side fixing part (1) and the right side fixing part (2) by means of diagonal connection parts, a collimator (41) is provided on a first edge (31) of the quadrilateral structure (3), a blazed grating (51) is provided on a second edge (32) of the quadrilateral structure (3), and the first edge (31) and the second edge (32) are two adjacent edges in the quadrilateral structure (3). The deformation of the quadrilateral structure (3) is monitored by means of the change of the angle between the adjacent edges.

The invention discloses an electrically-controlled variable optical attenuator based on a multistage wedge-shaped liquid crystal box and an attenuation control method, the attenuator comprises a laser, the laser provides an incident light signal, the divergent incident light signal is converted into a collimated parallel light beam through a collimator, the collimated parallel light beam is subjected to deflection modulation through a multistage wedge-shaped liquid crystal box module, and the modulated light beam is converted into a modulated light beam; the multi-channel liquid crystal controller is coupled to the output optical fiber through the optical fiber coupler, and generates and outputs driving voltage signals capable of being independently adjusted to the N-stage wedge-shaped liquid crystal box module, so that each wedge-shaped liquid crystal box in the multi-stage wedge-shaped liquid crystal box module is independently controlled; the control method comprises the steps of receiving a target instruction, querying a system-level relationship, distributing a deflection task, querying a device-level relationship, outputting a driving signal and performing closed-loop feedback correction. According to the invention, a large attenuation range is obtained, and at the same time, millisecond-level and even sub-millisecond-level rapid response is realized; the precision, the linearity and the usability of attenuation control are improved, and the control complexity is reduced.

The present invention discloses a photoacoustic spectroscopy gas detection device and method based on a differential diffuse reflection integrating sphere. The modulated laser output by a distributed feedback semiconductor laser is incident into the first diffuse reflection sphere of a differential diffuse reflection spherical resonance photoacoustic cell after passing through a laser collimator. After the target gas to be measured absorbs the laser energy, it causes the differential diffuse reflection spherical resonance photoacoustic cell to vibrate, and photoacoustic signals are generated in the first diffuse reflection sphere and the second diffuse reflection sphere. A first microphone and a second microphone are used to respectively detect the two-way photoacoustic signals in the first diffuse reflection sphere and the second diffuse reflection sphere, and the two detected photoacoustic signals are transmitted to a differential amplifier for differential operation. A control and data acquisition system collects the photoacoustic signals after differential operation and processes them by a computer to invert the concentration of the target gas to be measured. The detection device of the present invention has the advantages of large signal intensity, strong noise suppression ability, high system sensitivity, optical path free of adjustment, and small volume.

An electromagnetic radiation collimator comprising: a radiopaque elongated housing having a first end and a second end, wherein the housing houses an array of parallel radiolucent beam paths, wherein each of the beam paths extend from the first end to the second end, wherein each of the beam paths has an entrance aperture at the first end, and an exit aperture at the second end; the entrance aperture through which source electromagnetic radiation passes into the beam paths, wherein the beam paths emits an electromagnetic radiation beam from the exit aperture when the source electromagnetic radiation beams are in line with the longitudinal axis of the beam path or having a predetermined angle of deviation from the longitudinal axis of the beam path.

The invention relates to the technical field of optical fiber gas sensing, and provides an optical fiber photoacoustic sensor based on a nested cantilever beam structure and a sensing system.The optical fiber photoacoustic sensor comprises an optical fiber collimator, a shell, a cantilever beam diaphragm and a ceramic contact pin; the optical fiber collimator is inserted into the shell from one side of the shell; the ceramic pin is inserted into the shell from the bottom of the shell; an air chamber is arranged in the shell, and an air inlet and an air outlet which are communicated with the air chamber are reserved in the shell; a cantilever beam diaphragm is arranged on the shell; a plurality of layers of nested cantilever beams are arranged on the cantilever beam membrane; the lengths and the widths of the cantilever beams are sequentially reduced from outside to inside; and the resonant frequencies of the cantilever beams are different. According to the invention, multiple gases can be detected in the same equipment at the same time, the detection efficiency is improved, and the equipment volume is reduced.

A penta prism collimator having four freeform surfaces that fold the optical path of light received from a microdisplay collimates light for coupling to a waveguide. In some embodiments, the freeform surfaces are toroidal surfaces made from a single injection-molded element, such as a single piece of plastic. The freeform surfaces collimate the light at a variety of distances from an input pupil of a waveguide, allowing for more freedom of placement within a frame of a WHUD.

The invention discloses a laser synchronous transmission system and method based on a rotary motion mechanism and application, and belongs to the technical field of laser wireless energy transmission. The system comprises a static end and a rotary end of which the geometric centers are located on the same rotation axis; the static end is provided with a multimode optical fiber used for transmitting laser energy and a transmitting end single-mode optical fiber used for transmitting laser signals, the transmitting end single-mode optical fiber is provided with a transmitting end optical fiber collimator group, and the output of the multimode optical fiber is sequentially connected with a square optical fiber array and a lens array; the rotating end is provided with a laser cell panel for receiving laser energy, a receiving end optical fiber collimator for receiving laser signals and a receiving end single-mode optical fiber; and the square optical fiber array is connected to the transmitting end optical fiber collimator group. According to the invention, the stability and anti-interference performance of energy and signal cooperative transmission in the rotating mechanism are improved, the processing and assembling difficulty is reduced, the reliability of the system in a complex environment is improved, and long-term stable cooperative operation of higher-power laser and high-speed communication is supported.

The invention discloses a multi-wavelength laser collimator based on radial shearing. The multi-wavelength laser collimator comprises a near-field reference, a telescope objective combination, a bifocal objective and an image detector which are sequentially arranged along a light path. Aberration-free imaging of near-field light beams is achieved through a bifocal objective lens, and meanwhile far-field pointing is detected through coaxial shearing interference generated by means of amplitude light splitting. A single non-mobile sampling detection light path and a single detection sensor are used to realize simultaneous acquisition of near-field position information and far-field pointing information of a laser beam; the light spot position deviation and the fringe translation amount are analyzed through a computer, and high-precision collimation is achieved through a feedback control system. And the detection of the angle direction of the laser beams with various wavelengths can be realized by using a radial shearing interference technology. The device breaks through the limitation of traditional double-optical-path collimation, has the characteristics of simple structure, strong anti-interference performance, multi-wavelength applicability and the like, remarkably improves the collimation precision, reduces the cost, and has important application value in the field of laser precision collimation.

The embodiment of the utility model provides a radiation detector module, a radiation detector and imaging equipment. The radiation detector module comprises a detector circuit board which is provided with a detector element for converting received rays emitted by a radiation source into electric signals, and the detector circuit board is provided with a first positioning hole; the collimator assembly is arranged on a transmission path of the rays and collimates the rays radiated to the detector element, and the collimator assembly is provided with a second positioning hole corresponding to the first positioning hole in position; and the frame supports the detector circuit board and the collimator assembly, the frame is provided with a positioning column, and the positioning column penetrates through the first positioning hole and the second positioning hole. According to the radiation detector module, the difficulty of alignment operation can be reduced, accumulation of alignment errors generated in multiple times of alignment operation is reduced, the alignment precision of all the components is improved, and then the detection precision of the radiation detector module is improved.