431 results about "Parallel beam" patented technology

The disclosure relates to augmented reality devices based on a curved waveguide. An augmented reality device is provided. The augmented reality device includes a projection system to project an undistorted image, an input optical compensator located on the path of light rays out-coupled from the projection system, a curved waveguide comprising an input diffractive optical element and an output diffractive optical element. The output diffractive optical element performs the function of an output optical compensator that converts the light beams of a distorted image at the output of the waveguide into parallel light beams to output an undistorted image. Augmented reality glasses comprising an augmented reality device are also proposed. There is provided the ability to project a virtual image without aberrations, distortions and doubling of the image.

The invention relates to the technical field of semiconductor detection, in particular to a wafer bright field illumination and imaging system, a wafer defect detection device and a wafer defect detection method, the system comprises an illumination module, a beam combining module, an objective lens module and an acquisition imaging module; wherein the illumination module generates an illumination light beam adaptive to a wafer detection view field; the beam combining module realizes non-interference separated transmission of an illumination light path and an acquisition light path through a reflection area and a transmission area which work independently; the objective lens module converges the light beams reflected by the reflection area to the surface of the wafer, and controls the light beams to form illumination only at the edge of an entrance pupil so as to realize off-axis illumination; meanwhile, the reflected light beams on the surface of the wafer are collimated and then transmitted to the transmission area; and the acquisition imaging module receives the parallel light beams, converts optical signals into electric signals, and generates a wafer surface image. According to the invention, the problems of high energy loss, high cost, low detection rate and insufficient resolution of a traditional bright field detection system are effectively solved.

A laser beam expanding lighting device comprises an incident laser adjusting module, an adjustable base module and a beam expanding lens set module, a parallel light beam injection port and a plane mirror are installed in the incident laser adjusting module, and after collimation, a laser mirror is transmitted to a beam expanding lens set after being reflected by the two adjustable plane mirrors; the beam expanding lens group realizes the adjustment of the beam expanding angle and the beam expanding multiple by combining different beam expanding lenses and adjusting the distance between the beam expanding lenses; the beam expanding lens set is installed on the adjustable base, the adjustable base achieves deviation of the axis of the beam expanding lens set in two directions relative to the axis of laser through an ejector pin-spring linkage mechanism, the irradiation position of the laser on the beam expanding lens is changed, and adjustment of a laser illumination area is achieved while beam expanding is conducted. The parallel light beam injection port and the beam expanding lens group of the device can be arranged in a non-coaxial mode, the application range is wide, the overall structure is compact, operation is convenient, and various adjusting adaptability is achieved.

The invention discloses a coating thickness detection system based on a terahertz synthetic aperture imaging technology. The coating thickness detection system comprises an emission source, a detector, a beam splitter, a focusing lens and a two-dimensional translation stage, terahertz waves emitted by the emission source penetrate through the beam splitter and then are focused to a focus by the focusing lens, and then continue to be propagated from the focus in the form of divergent waves and irradiate a measured sample; a part of terahertz waves scattered by the sample irradiate the focusing lens through the focus, are collected by the focusing lens, are converted into parallel beams, and are reflected by the beam splitter until being detected by the detector; and the two-dimensional translation stage is used for carrying out two-dimensional scanning on the measured sample, synchronously recording the terahertz signal detected by the detector, and then reconstructing a three-dimensional terahertz image of the sample. The invention further discloses a coating thickness detection method. According to the scheme, the coating thickness of the measured sample can be conveniently and efficiently measured.

The invention discloses a one-dimensional ultra-wide field-of-view ultra-high spectral resolution dispersion coherent imaging spectrometer, which belongs to the technical field of spectral imaging, and comprises a first microlens array used for obtaining incident light of a one-dimensional ultra-wide field-of-view in a horizontal plane; the plurality of optical fibers are used for transmitting incident light of a one-dimensional ultra-wide field of view; the second micro lens array is used for collimating incident light from each optical fiber into broadband parallel light beams; the grating beam splitter interferometer is used for dispersing the broadband parallel light beams into a plurality of narrow-band parallel light beams with different propagation directions; the cylindrical lens is used for converging the two paths of coherent light of each narrow-band parallel light beam to a target block of the detector, and converging the narrow-band parallel light beams with different propagation directions to different target blocks respectively; and the detector is used for obtaining a continuous broadband ultra-high resolution spectrum according to the two paths of coherent light received by each target block. According to the invention, a one-dimensional ultra-wide field of view is obtained in a horizontal plane, and ultra-high spectral resolution can be obtained.

The invention belongs to the technical field of laser, and particularly discloses a beam shaping system and method based on prism pair orthogonality and cascade, and the system comprises a single-mode fiber, an aspherical lens, a first prism pair, a first parallel plate, a second prism pair and a second parallel plate which are sequentially arranged along the direction of an optical axis. A Gaussian beam emitted by a single-mode optical fiber is collimated by an aspherical lens to form a parallel beam, the beam is expanded or compressed in the X direction by a first prism pair, the beam is expanded in the Y direction by a second prism pair, and two inclined parallel plates are respectively used for compensating the beam offset in the X / Y direction; according to the invention, the circular Gaussian beam emitted by the single-mode fiber can be shaped, a large strip-shaped collimation light spot with an adjustable length-width ratio from 4: 1 to 20: 1 and a long axis size of 30mm can be realized, and the central positions of the input and output beams in the cross section are ensured to be unchanged.

The invention provides a coupling system for an on-chip light source and a photon chip. The coupling system comprises an input light source, a collimating lens, a focusing lens, a reflecting prism and an on-chip grating which are sequentially arranged in the direction of a light path, and an optical waveguide located on the side face of the on-chip grating. The collimating lens is used for primarily shaping emergent light of an input light source into a collimated light beam, the focusing lens is used for focusing the collimated light beam to the on-chip grating, and the collimating lens and the focusing lens are both aspheric plano-convex lenses. According to the system, non-uniformity caused by a large divergence angle of the semiconductor laser is effectively corrected through the aspheric micro lens, output of approximately parallel light beams is achieved, the light beams are accurately focused to the photon chip grating through the aspheric focusing lens subsequently, the coupling efficiency of light energy is greatly improved, and compared with two cylindrical lenses in the prior art, the coupling efficiency of light energy is greatly improved. The design of the focusing lens and the reflector is added, so that the number of optical elements is reduced, and error accumulation is reduced.

The invention provides a multi-geometric-structure incident light path guiding device and X-ray diffraction equipment. The device comprises a reflector assembly and a movable slit assembly, the reflector assembly and the movable slit assembly are arranged on an irradiation path of an incident light beam, and a reflecting surface of the reflector assembly is arranged to reflect and adjust the received incident light beam into a focused or parallel light beam geometric structure and face the center of the goniometer; the reflector assembly is provided with a light beam channel. When the target light beam is geometrically a focused or parallel light beam, the movable slit assembly is configured to guide the incident light beam to the reflecting surface, and the reflected incident light beam reaches the center of the goniometer; when the target light beam is geometrically a divergent light beam, the movable slit assembly is configured to guide an incident light beam to pass through the light beam channel and reach the center of the goniometer. The device is simple in structure and flexible in switching, and an independent multi-stage nested translation or rotation compensation structure does not need to be additionally arranged.

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 invention discloses a high-resolution scanning spectrometer based on a linear array detector and a use method, and belongs to the technical field of spectrum instruments and spectral analysis. The first aspherical mirror is used for reducing the diameter of a light beam emitted by the light source, and the second aspherical mirror is used for collimating effective wave band light passing through the slit into parallel light beams; the plane scribed grating is used for diffracting the light beam; the reflection system is used for reflecting the light beam to enable the light beam to enter the plane scribed grating again for secondary diffraction; the first spherical mirror is used for collimating light beams passing through the first aspherical mirror, the second spherical mirror is used for converging the light beams diffracted for the first time at the slit, and the third spherical mirror is used for converging the light beams diffracted for the second time into the linear array photoelectric detector. The advantages of a light splitting type spectrograph and a scanning type spectrograph are combined, a reflection type light path structure is adopted, extra aberration introduced by a transmission type light path is avoided, the data acquisition efficiency is improved, and high-quality imaging is guaranteed.

The invention, which belongs to the technical field of spectral imaging, discloses an ultra-wide-band ultra-wide-field-of-view high-spectral-resolution real-time imaging spectrometer comprising a first micro-lens array, a plurality of optical fibers, a plurality of second micro-lens arrays and a plurality of assemblies. First micro lenses in each column of the first micro lens array are arranged on a vertical plane arc, and micro lenses in each row are arranged on a horizontal plane straight line, so that incident light of a one-dimensional ultra-wide view field is obtained in real time; through optical fiber coupling, incident light is transmitted to the second micro lens array to be collimated into parallel light beams; according to the components, light of different wavebands is processed through the optical filter, the plane transmission grating and the detector, first-order diffraction light beams of different wavelengths in the different wavebands are received by the detector after diffraction, and space information and spectral information are obtained in real time according to an irradiated target block. The imaging spectrometer provided by the invention has the advantages of ultra-wide wave band, ultra-wide field of view, high spectral resolution, real-time measurement, compact structure and high stability, and is suitable for a remote sensing photoelectric reconnaissance detection system.

The invention discloses a multi-wavelength same-viewing-direction laser radar telescope system, and belongs to the technical field of laser radar detection. The system comprises a paraboloid single primary mirror which focuses a specific wavelength optical signal received by a telescope to a focus through a primary mirror paraboloid; the replaceable small hole is fixedly formed in the focus position of the paraboloid single primary mirror; the collimating lens group is used for collimating the telescope focusing light beam penetrating through the replaceable small hole to form parallel light beams; the n dichroic mirror groups are used for dividing the parallel light beams into reflected parallel light beams and transmitted parallel light beams; and the plurality of focusing lens group assemblies are used for focusing the parallel light beams split by the dichroic mirror to the focal points of the focusing lens group assemblies, and the number of the plurality of focusing lens group assemblies is n + 1. Multi-wavelength receiving in the same direction can be achieved, light background noise is suppressed by the secondary diaphragm, view fields of different wavelengths are controlled respectively, the size is small, the light collecting efficiency is high, and noise is low.

The invention relates to an improved cage type light field imaging system and a debugging method, and belongs to the technical field of light field imaging, and the system comprises a main lens which is used for collecting light spots on an object surface, and enabling the light emitted by the light spots to be imaged on a micro lens; the micro lens is used for separating the light collected by the main lens into light beams in different directions and imaging the light beams on a virtual image plane; the relay lens is used for carrying out secondary imaging on the light beams in different directions to different pixels of a CCD detector of the camera; the relay lens comprises a first lens and a second lens, the focal lengths of the first lens and the second lens are positive, the focal length of the first lens is smaller than that of the second lens, and the magnification of the relay lens is larger than 1: 1. In the debugging process of the system, parallel light beams are arranged in front of the micro lens, and the position of the micro lens is determined in the mode that the parallel light beams vertically enter the micro lens. The system is not influenced by vignetting and distortion generated by the relay lens any more, and the debugging method improves the positioning precision of the micro lens.

The invention discloses an immersed tube butt joint installation method and system based on laser ranging and visual recognition, and belongs to the technical field of ocean engineering. The method comprises the steps that a laser target set is installed on the butt joint end face of an installed pipe joint, and a laser positioning set and a laser projector are installed on the butt joint end face of a to-be-installed pipe joint; after the to-be-installed pipe joint sinks, the laser positioning group is started to measure the distance to the target group in real time, meanwhile, parallel light beams are emitted to the other end face of the to-be-installed pipe joint through the laser projector, and the position of a light spot is collected through visual recognition to obtain posture deviation; the distance and deviation data are fused, the optimal pose of the pipe joint to be installed is calculated through an optimization algorithm, and then the offset of the end face center and the axis deflection angle are obtained; and according to the parameters, a regulation and control instruction is generated, and the ballast water system and the winch system are controlled to adjust the posture of the to-be-installed pipe joint till accurate butt joint is achieved. According to the invention, full-underwater, high-precision and automatic immersed tube butt joint is realized, and the dependence on an overwater measuring tower and a GPS (Global Positioning System) is eliminated.

The invention relates to a structured light imaging system suitable for semiconductor SIP system-in-package, which comprises a central camera, and a plurality of groups of DLP projections and side cameras are symmetrically arranged on two sides of an optical axis of the central camera; the DLP projector emits parallel light beams to irradiate the surfaces of the crystal grains, and the side cameras receive reflected light rays in parallel; the device further comprises a control unit, and the control unit sequentially controls the DLP projectors and the side cameras which are symmetrically arranged in pairs to synchronously work and processes image data so as to reconstruct the three-dimensional morphology of the surface of the crystal grain. When incident light emitted by the DLP projector irradiates the surface of the crystal grain at a specific angle, specular reflection light of the incident light propagates in the symmetrical direction according to the reflection law. The side camera and the DLP projector are symmetrically arranged, so that the optical axis of the side camera is consistent with a reflection light path, and a highlight area image generated by mirror reflection is accurately captured. The layout breaks through the limitation of the traditional diffuse reflection hypothesis, so that the morphology information of the high-reflection surface can be completely acquired, and the accuracy and reliability of crystal grain three-dimensional reconstruction in SIP packaging are remarkably improved.

The invention discloses a railway signal relay contact pressure sensor which comprises an elastic body, a probe fixed at one end of the elastic body and at least one sensitive element attached to the surface of the elastic body. Wherein the elastic body comprises an elastic detection structure, the elastic detection structure is a structure based on double-hole parallel beams, the elastic detection structure is composed of two parallel beams and two vertical beams, and the elastic detection structure can generate parallelogram deformation. The contact pressure sensor meets the use requirements of railway signal relay contact pressure measurement.

A slat roof with two substantially parallel beams with a set of parallel slats between them that are rotatably secured to the beams is disclosed. A first beam comprises a set of recesses that are open towards the topside. Each slat has at its extremities a slat shaft, wherein the first slat shaft rests in a corresponding recess. At least one recess is provided with an abutment and the slat shaft that is positioned in the recess is provided with a locking piece that at its topside at least partially abuts against the abutment. The locking piece and the abutment together ensure vertical locking of the first extremity of the slat.

The invention discloses a generation system and method based on a vector light beam of any structure, and the system comprises a laser, a collimating and beam expanding element, a polarizing film, a first half-wave plate, a beam splitting cube, a polarization beam splitting cube, a reflector, a second half-wave plate, a quarter-wave plate, a Fourier lens, a spatial light modulator, a computer, and a camera. Two parallel light beams which are generated by a continuous wave solid laser and a half-wave plate and have an orthogonal polarization state are respectively irradiated on spatial light modulators which are loaded with different topological charge values and are used for customizing light beam holograms with any shapes and structures, are modulated by the spatial light modulators, and are coaxially superposed with a Fourier lens through a quarter-wave plate; and the customized vector light beam with any shape and uniform intensity can be generated. According to the invention, the direct mapping of a real object can be realized, the light beam quality is improved, and the polarization state is flexibly regulated and controlled.

This method for manufacturing a probe involves: preparing a first metal plate (111) in which first diagonal beams (1211) extending in a first intersecting direction are arranged, a second metal plate (112) in which parallel beams (1212) are arranged in two rows at the intervals of the first diagonal beams (1211), and a third metal plate (113) in which second diagonal beams (1213) extending in a second intersecting direction symmetrical to the first intersecting direction are arranged; and layering the first metal plate (111), the second metal plate (112), and the third metal plate (113) sequentially. An end portion of the first diagonal beam (1211) and an end portion of the second diagonal beam (1213) are connected via the parallel beam (1212) to configure a spring portion (12) that includes a coil spring portion (121) in which the first diagonal beam (1211), the parallel beam (1212), and the second diagonal beam (1213) are connected sequentially.

The invention relates to the technical field of near-to-eye display, and provides a near-to-eye display method and near-to-eye display device.According to the method, a high-resolution original electronic image is generated through a micro display screen, accurate information content is provided for a user, and the quality and definition of an information source are ensured. The collimating projection lens converts divergent light of the micro display screen into parallel light beams, disordered scattering of light is reduced, and images of the micro display screen are imaged at an infinite distance after passing through the collimating lens. Parallel light beams are directionally regulated and controlled through micro-structure devices such as a micro-cube-corner prism array or an orthogonal reflector array, the parallel light beams are converged to a small-size exit pupil area, on-demand display of image information is achieved, an image can be seen only when the sight line of a user is aligned, and therefore continuous interference of the information on the normal view field of the user is avoided, and the user experience is improved. The comfort and concentration degree of visual experience are improved, the information transmission effect is optimized, and more natural, comfortable and efficient man-machine interaction experience is provided for near-eye display equipment.

The utility model belongs to the technical field of sensors, and discloses a miniaturized deviation rectifying sensor, which comprises a light source, a Fresnel diffraction mirror, a photoelectric detector and a signal processing module which are sequentially arranged along the direction of a light path, the light source emits divergent light beams to the Fresnel diffraction mirror, the Fresnel diffraction mirror receives the divergent light beams, converts the divergent light beams into parallel light beams and emits the parallel light beams to the photoelectric detector, and the photoelectric detector receives the parallel light beams and outputs electric signals to the signal processing module. And the signal processing module outputs offset according to the electric signal. According to the utility model, by arranging the Fresnel diffraction mirror, divergent light beams are directly converted into parallel light beams, an additional light path adjusting device is not needed, the overall structure size of the sensor is reduced, the stability and the detection precision of the light beams are improved, high-efficiency acquisition and processing of signals are ensured, and the detection accuracy is further improved.

The invention provides a real-time detection system and method for fluorescence signals of bacteria in air, and the system comprises a narrow-band spectrum light source which is used for radiating narrow-band exciting light matched with fluorescent substances in the bacteria, and exciting the fluorescent substances in the bacteria to generate fluorescence; the collimation system is used for collecting light energy output by the narrow-band spectrum light source and converting divergent light beams into parallel light beams; the light conversion aggregator is used for distinguishing bacterial fluorescence and Mie scattered light, converting the effective bacterial fluorescence into secondary fluorescence and converging the secondary fluorescence, and the narrow-band exciting light passes through the light conversion aggregator after being collimated by the collimation system; the detection system is used for converting the secondary fluorescence signal into an electric signal; the control system is respectively connected with the detection system and the narrowband spectrum light source and is used for controlling the detection system and the narrowband spectrum light source to work; and the flow field system is used for driving air flow to flow through the light conversion aggregator. The structure is simple, and optical signal interference generated by Mie scattering can be inhibited.

The application relates to an improved cage type light field imaging system and a debugging method, and belongs to the technical field of light field imaging. The system comprises a main lens for collecting light spots on an object plane and imaging light emitted by the light spots onto a microlens; the microlens is used for separating the light collected by the main lens into light beams in different directions and imaging the light beams onto a virtual image plane; a relay lens is used for twice imaging the light beams in different directions onto different pixels of a CCD detector of a camera; the relay lens comprises a first lens and a second lens, the focal lengths of the first lens and the second lens are both positive, the focal length of the first lens is smaller than that of the second lens, and the magnification of the relay lens is greater than 1:1. During the debugging process of the system, parallel light beams are arranged in front of the microlens, and the parallel light beams are vertically injected into the microlens to determine the position of the microlens. The system is not affected by the vignetting and distortion generated by the relay lens, and the debugging method improves the positioning accuracy of the microlens.

The utility model relates to the technical field of steel structure machining tools, in particular to a steel structure parallel beam spacing adjusting device which comprises an adjusting rod, an adjusting handle is arranged at the upper end of the adjusting rod, a rotating head is arranged below the adjusting rod, a fixing block is arranged outside the rotating head, a rotating groove is formed in the fixing block, and the rotating handle is arranged in the rotating groove. The rotating head is installed in the rotating groove in a connected mode, and a clamping piece is installed on the side face of the fixing block and is a fixing clamping piece. The outer surface of the adjusting rod is provided with an external thread, the adjusting device further comprises a movable block, the movable block is provided with a nut hole, the nut hole is internally provided with an internal thread, the adjusting rod is inserted into the nut hole, the internal thread and the external thread are connected in a matched mode, and a clamping piece is installed on the side face of the movable block and is a movable clamping piece; the side face of the clamping piece is provided with an arc-shaped groove for clamping the side face of the steel pipe. The device has the advantages of reducing force and being convenient to use.

The invention discloses a road slope safety inspection method and system based on an unmanned aerial vehicle and vision, and relates to the field of general control systems.The method comprises the steps that the unmanned aerial vehicle is controlled to project parallel light beams with preset physical intervals to a slope, slope optical signals are synchronously captured, and original frame data are generated; performing downsampling on the original frame data to process thumbnail data; determining rough coordinate data of the disease features in the thumbnail data; determining target area data according to a resolution ratio relation between the rough coordinate data and the original frame data; calculating the ratio of the preset physical spacing to the pixel distance, and generating a real-time sampling proportionality coefficient; calculating a product of a pixel number of a disease target in the target area data and a real-time sampling proportionality coefficient, and generating disease physical dimension data; and binding the spatial positioning coordinates when the original frame data is obtained with the disease physical dimension data to generate an inspection result. According to the invention, quantitative data of slope diseases can be obtained under the condition of low computing power.

The invention provides an underwater multifunctional laser optical assembly for a radiation environment. The underwater multifunctional laser optical assembly for the radiation environment comprises a laser source, a process optical fiber, a collimating lens, a reflecting mirror, a forming lens and a gathering lens. The process optical fiber is used for conveying a laser beam generated by the laser source to the collimating lens. The collimating lens is used for adjusting a laser beam transmitted by the process optical fiber from a divergent beam to a parallel beam. The reflecting mirror is used for changing the propagation direction of the parallel light beams to be perpendicular to the direction of the forming lens. The forming lens is used for adjusting the parallel light beams with the changed direction into the specific shape needed by welding. The focusing lens is arranged between the forming lens and the focusing surface in parallel and used for focusing the parallel light beams adjusted by the forming lens to the focusing surface for welding. According to the invention, the formed lens is matched with other lenses, so that the technical problem of how to apply the laser welding technology to a high-radiation underwater scene is solved.

The present application discloses a steering device and its design method, a liquid level measurement system and method, relating to the technical field of liquid level measurement. The steering device includes a plane reflecting surface and a parabolic reflecting surface. The present application utilizes the combined technology of the plane reflecting surface and the parabolic reflecting surface to extend the parabolic focusing steering device technology that could only be used on vertical tanks to spherical tanks, sausage tanks and other special-shaped tanks, so that the main beam of the mechanical vibration wave emitted by the probe installed at any position and at any angle on the tank body all becomes a parallel beam without divergence loss and vertically shoots upward to the liquid surface in the tank, and focuses and reflects the liquid surface echo to the probe, increasing the intensity of the echo signal, achieving the effects of stable and accurate measurement of the liquid level in the tank, and moreover, the volume of the steering device can be reduced.

The invention discloses a double-beam scanning photoelectric sensor and a control method, and aims to solve the problem of false triggering when an existing sensor detects an object with a gap or high light reflection. The sensor is mainly composed of a light beam transmitting module, a light beam receiving module, a control processing module and an output module. Wherein the light beam emitting module is composed of two independent infrared lasers and can synchronously emit parallel light beams with the diameter of 1.0-2.0 mm; a state machine logic unit is arranged in the control processing module, output is triggered only when two paths of signals exceed a set threshold value by comparing the intensity of the double-beam signals in real time, and the current output state is maintained when any path of signal is lost; the output module provides an uninterrupted NPN / PNP switching signal. Through double-beam cooperative scanning and special control logic, stable detection can be provided for regular gap objects such as printed circuit boards and trays, transparent or highly reflective materials can be effectively handled, and the false triggering rate is remarkably reduced while the detection reliability is improved.

Disclosed is an electric power equipment internal discharge position and spectral information multiplexing photoelectric sensing device, in a bipolar plate structure, a split light guide array is inserted into the interior of the electric power equipment to collect the discharge light beams from the interior of the electric power equipment, a microlens homogenizing plate is arranged at the bottom of the split light guide array, the upper surface of the microlens homogenizing plate is etched with a microlens array for focusing light signals to form parallel light beams; a fiber panel is arranged at the bottom of the microlens homogenizing plate, the upper panel is a central-symmetrical planar multi-lobe structure to group the parallel light beams, the lower panel is connected to the upper panel through a fiber bundle, and the lower panel is a rectangular structure to group the parallel light beams from the upper panel to form photon signals; a photoelectric array includes a silicon photomultiplier array and a surface spectral coating arranged on the silicon photomultiplier array, and the multiplexing two-dimensional photoelectric array constructs a sparse spectral sensing line array based on the photon signals to generate spectral information and constructs a multi-normal intensity sensing line array to obtain position information.

The invention discloses a compact, large-aperture and variable-focal-length collimator system, which comprises a Cassegrain reflector group, a correction lens group and a thermal compensation piece, the Cassegrain reflector group and the correction lens group are in optical conjugate design; the thermal compensation part is arranged in the Cassegrain reflector group so as to compensate the thermal expansion effect of the Cassegrain reflector group; the correction lens group is located on one side, close to the focal plane, of the Cassegrain reflector group, and the correction lens group is detachably connected with the Cassegrain reflector group; the Cassegrain reflector group comprises a primary mirror and a secondary mirror which are coaxially arranged; the correction lens group is used for collimating the short-focal-length parallel light beams output by the Cassegrain reflector group into long-focal-length parallel light beams; the correction lens group comprises one or more optical lenses, and the correction lens group is configured to be assembled with optical lenses with different focal powers and different numbers so as to realize focal length switching of the collimator system. Therefore, not only is the light beam collimation precision ensured, but also the collimator system is compact in structure and can quickly change the focal length.