187 results about "Beam collimation" patented technology

The invention relates to the technical field of optical element manufacturing, in particular to an exposure device with an adjustable interference angle without other optical elements, an exposure method and a preparation method of a reflective volume grating. The exposure device comprises a laser source, a reflector, a beam expanding system, a collimating lens, an optical rotating table and PTR glass, wherein the PTR glass is arranged on the optical rotating table; wherein laser emitted by the laser source passes through the reflector, is subjected to light spot beam expansion through the beam expansion system, and is subjected to light beam collimation through the collimating lens, and then the light beam enters the PTR glass body and is interfered in the PTR glass body to form interference fringes; by rotating the optical rotating table, a light beam is incident into the PTR glass body at different angles, and interference fringes of different periods are formed by changing the interference angle. The interference angle is changed by adjusting the light incident angle, the reflective volume grating with different wavelengths is prepared, interference can be automatically formed without depending on redundant optical components, and meanwhile the reflective volume grating has the advantages of being low in cost, simple in structure, easy to operate, beneficial to large-scale production and the like.

The invention provides a cavity adjusting method and device for a laser gyroscope resonant cavity, and the method comprises the following steps: building a light beam loop: horizontally placing a resonant cavity substrate on a supporting seat, and forming the light beam loop with two plane reflectors and two spherical reflectors; light beam introduction: starting a sweep frequency laser assembly, and enabling the reference light beam to enter a resonant cavity light path after passing through a light beam collimation system; light spot form monitoring and coarse adjustment: after a light beam emitted by the resonant cavity is collected by an image collector, the main control computer analyzes the light spot form and judges the imbalance state, evaluation information is fed back to the control system, the control system adjusts the inclination amount of the horizontal dimension and the pitching dimension of the light beam in the light beam collimation system according to the feedback information, and the light spot form is obtained. And the light spot is located at the center of the cavity mirror to finish coarse adjustment of the cavity. According to the method, coarse cavity adjustment can be completed without depending on a complex optical cavity technology, the cavity adjustment time is greatly shortened, the overall operation is simple, and the cavity adjustment efficiency is improved.

The invention discloses a light-induced thermoelastic spectrum trace gas detection device and method based on an echo wall mode microcavity. The device comprises a first signal generator, a lock-in amplifier, a laser device control unit, a first laser device, a laser beam collimation unit, a gas chamber, a focusing lens, a tuning fork, an echo wall mode microcavity, a coupling medium, a second laser device, a second signal generator, a photoelectric detector and a computer, the emergent laser is focused to the interdigital root of the tuning fork through the focusing lens; laser output by the second laser device is transmitted by the coupling medium and coupled into the echo wall mode microcavity in an evanescent wave form, the echo wall mode microcavity deforms, the resonant wavelength of the echo wall mode microcavity in the transmitted spectrum moves, and the concentration of the gas to be detected in the gas chamber is inverted according to the displacement of the resonant wavelength. The problems that a quartz tuning fork is large in thermal noise and weak current signals are easily interfered by an electromagnetic field are solved.

The invention discloses a semiconductor laser light beam collimation quality detection device and detection method, and relates to the technical field of laser detection. The device comprises a loading subassembly, a near-field detection subassembly and a far-field detection subassembly. The object carrying subassembly comprises an object carrying table used for bearing the laser chip to be detected. The near-field detection subassembly comprises a near-field industrial camera located on the light emitting side of the laser chip, and a beam splitter prism is arranged on the side, facing the laser chip, of the near-field industrial camera. The far-field detection subassembly comprises a far-field industrial camera. A near-field industrial camera and a far-field industrial camera are used for receiving a near-field light spot and a far-field light spot of a light beam respectively, centroid coordinates (Xa, Za) and (Xb, Zb) of the near-field light spot and the far-field light spot are calculated, if Xa-Xb is smaller than delta x, slow collimation of the light beam is qualified, and if Za-Zb is smaller than delta z, fast axis collimation of the light beam is qualified. The device and the detection method are simple in operation and high in efficiency, and can ensure the measurement precision of the mass center position of the light spot.

The embodiment of the invention provides a light beam shaping assembly, a display device and a manufacturing method of the light beam shaping assembly, and relates to the technical field of light display, and the light beam shaping assembly is high in control precision of light beams. The beam shaping assembly comprises a first metasurface device and a second metasurface device, and the second metasurface device is arranged on the light emitting side of the first metasurface device; the first metasurface device comprises a first unit cell group and a second unit cell group; the second metasurface device comprises a third unit cell group and a fourth unit cell group; the first unit cell group is used for collimating the first light beam to form a first collimated light beam, and the third unit cell group is used for deflecting the first collimated light beam; the second unit cell group is used for collimating the second light beam to form a second collimated light beam, and the fourth unit cell group is used for deflecting the second collimated light beam.

The invention relates to an electric injection quantum dot vertical cavity surface emitting laser and a preparation method thereof. The laser structure comprises a substrate, a bottom reflector, a first current expansion layer, a waveguide layer, an electron injection layer, an active layer, a hole injection layer, a second current expansion layer and a top reflector. A corresponding top reflector is arranged in an opening area in the waveguide layer and serves as a resonant cavity of the laser, and a light field is guided by the waveguide layer to be efficiently oscillated and amplified in the resonant cavity. In the preparation process, good lattice matching between the bottom reflector and the substrate is ensured through epitaxial growth, interface defects and stress are reduced, low-cost methods such as spraying, spin coating and ink-jet printing are used, operation is easy and convenient, and large-area preparation can be achieved. The laser realizes bottom light emission, optimizes current injection, improves light emission and heat dissipation performance, controls a resonant cavity light field to improve device performance, and has the advantages of low power consumption, high light beam collimation and the like.

An optoelectronic apparatus includes an array of emitters configured to emit beams of optical radiation. An optical substrate is mounted over the array. An optical metasurface is disposed on the optical substrate and configured to collimate and split each of the emitted beams into a respective group of collimated sub-beams, and to direct the collimated sub-beams toward a target to form a pattern of spots on the target.

The invention relates to the technical field of optics, in particular to a low-crosstalk channel modulation interference polarization spectrum detection method and system, and the system comprises a half-field telescopic module, a phase modulation module, an interference modulation module and a detection module. The half-view-field telescope module is used for performing lower half-view-field beam collimation on an input target beam, the target beam is propagated to the phase modulation module in parallel according to a set range, a composite polarization splitting prism group in the phase modulation module performs light splitting operation based on the target beam output by the half-view-field telescope module, and two parallel polarized lights are emitted, independent phase modulation of the two paths of light is ensured; and the interference modulation module is used for performing light splitting modulation according to the two paths of polarized light to ensure that the two paths of modulated polarized light beams interfere with each other and are transmitted to the detection module for imaging. According to the system, the detection precision of a narrow-band polarization spectrum or a polarization spectrum with an obvious narrow-band wave crest and a narrow-band absorption peak is improved, the polarization spectrum detection capability is high, and the application range is wide.

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 provides an array GM-APD laser radar detection device based on vector light illumination, and aims to solve the technical defects that the characteristic dimension of emitted light is generally low and a receiving system is not optimally designed for polarization scattering characteristics in the existing laser radar technology. The polarization modulator is used for modulating the polarization state of incident linearly polarized light; the collimating and beam expanding lens group is used for collimating and expanding the light beams; and the 1064nm pulse laser is used as a laser source to generate high repetition frequency pulse light. The receiving optical system comprises a curved reflector used for receiving echo light reflected by a target and focusing the echo light; the plane mirror is used for guiding the light beam to the array GM-APD detector; and the array GM-APD detector is used for carrying out digital processing on the light beams. The method is suitable for being applied to work of accurate identification and high-resolution imaging of a target.

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 a narrow linewidth laser linewidth detection system based on spectrum reconstruction. The narrow linewidth laser linewidth detection system comprises a beam expanding collimation unit, an N-step etalon frequency discrimination unit, a beam splitting focusing unit, N point detectors and a multi-channel acquisition and data processing unit. The beam expanding and collimating unit is used for carrying out light beam collimation on incident measured laser, the N-step etalon frequency discrimination unit comprises N F-P cavities which are spliced into a multi-step etalon with a circular clear aperture, and the F-P cavities are used for respectively gating different spectral ranges of the measured laser and outputting parallel light with different energies. The beam splitting and focusing unit focuses the parallel light output by the N F-P cavities to the light sensing surfaces of the N point detectors respectively, and electric signals are formed through photoelectric conversion. And the multi-channel acquisition and data processing unit obtains a power measured value IM of each point detector, and calculates a power theoretical calculation value IjM of the N point detectors at the same time, thereby obtaining a line width value sigma of the measured single-frequency narrow-line-width laser. According to the invention, the problem that the 3dB bandwidth is difficult to directly read due to insufficient distinguishing capability of the existing frequency discriminator is solved.

The invention provides an exciting light collimating device, a collimating method thereof and an imaging and optical testing system. Compared with a traditional double-diaphragm collimation method, the exciting light collimation device, the collimation method thereof and the imaging and optical testing system can prevent the variable-temperature sample cavity from shielding the diaphragms, the light beam direction is adjusted through the plane mirror without depending on the diaphragm behind the sample cavity, and the problem that the sample cavity blocks the diaphragm behind the sample cavity is solved. The sample cavity does not need to be moved, so that sample deflection and shaking caused by position change of the sample cavity are avoided, experimental errors are reduced, and the experimental stability is improved. Collimation can be completed by adjusting the plane mirror, a traditional diaphragm adjusting method is simplified, and operation efficiency is improved. And the device is suitable for various experimental environments, such as other optical test systems which have high requirements on light beam collimation but limited space and have any wave band, and has wide applicability.

The embodiment of the invention provides a ray beam collimation system, and relates to the technical field of medical equipment. The ray beam collimation system comprises a primary collimator and a multi-leaf collimator. The primary collimator is provided with a through hole with a fixed shape and size, and the through hole is matched with the multi-leaf collimator in shape and size. And the primary collimator is positioned below the ray source and above the multi-leaf collimator. The multi-blade collimator comprises at least two blade groups composed of a plurality of blades, the tail end of each blade is provided with a concave-convex part, the concave-convex part comprises a plurality of first protrusions arranged at intervals in the first direction, a first recess is formed between every two adjacent first protrusions, the at least two blade groups comprise two blades opposite in the second direction, and the first protrusions are arranged at intervals in the first direction. The first protrusion of one of the two opposite blades is used for being connected with the first recess of the other blade in an inserted mode. The ray beam collimation system provided by the embodiment of the invention has the benefits that leakage rays between the tail ends of the blades are shielded, and the irradiation space of a patient in radiotherapy is increased.

The present invention provides a multi-axis interferometer parallelism detection system and detection method, the detection method comprising: after shaping the laser beam, the multi-axis interferometer divides the laser beam into a first light beam to be detected and a second light beam to be detected; adjusting the camera mirror in the detection module to be perpendicular to the x-direction; the detection module obtains the near-end imaging information and the far-end imaging information of the first light beam to be detected and the second light beam to be detected; calculating the parallelism of the second light beam to be detected with the first light beam to be detected; and calculating the angle for angle compensation when they are not parallel. The present invention accurately measures the parallelism of the light beams of the multi-axis interferometer by comparing the near-end and far-end imaging, and the measurement results are highly effective; at the same time, a reflection module is provided to ensure that the optical axis of the camera and the first light beam to be detected are perpendicular, thereby improving the measurement accuracy and effectiveness; in addition, a beam merging tool converges the light beams so that the camera does not need to move when imaging the two light beams to be detected, thereby improving the convenience of detection; finally, the imaging beam radius is set to adjust the beam collimation effect and improve the detection accuracy.

The invention discloses a bending endoscopic imaging method and system based on a few-mode optical fiber, and belongs to the technical field of optical fiber imaging. According to the method, an MNIST handwritten digital image is loaded through a digital micromirror device (DMD), a speckle pattern is generated through few-mode optical fiber transmission, image restoration in a bending state is achieved through a deep learning model, and reconstruction effects under different bending degrees are quantized through a Dice coefficient. The system comprises a light beam collimation module, a pattern loading module, an image transmission module and an image acquisition-processing module. The image transmission module adopts a step refractive index few-mode optical fiber, and mode coupling caused by bending is inhibited by increasing the effective refractive index difference between modes; and the image acquisition-processing module is combined with a shallow U-shaped convolutional neural network to reconstruct a speckle pattern acquired by the CCD camera. While miniaturization of the probe is ensured, the imaging quality in a bending environment is remarkably improved, and the probe is suitable for miniaturized high-resolution imaging scenes such as medical endoscopes and the like.

The invention provides a collimation monitoring device and semiconductor detection equipment. The collimation monitoring device comprises a plurality of sampling pieces, a reversing assembly and a monitoring module. The plurality of sampling pieces are respectively arranged between two adjacent optical modules, each sampling piece comprises a sampling driving piece and a sampling reflecting piece, and the sampling driving pieces are connected with the sampling reflecting pieces and are used for driving the sampling reflecting pieces to reflect or avoid the light beams; the reversing assembly is linked with the plurality of sampling pieces and is used for reflecting light beams from the sampling pieces; the monitoring module is used for receiving the light beams from the reversing assembly to monitor light spots of the light beams. According to the invention, the plurality of sampling pieces can monitor the light beam in a segmented manner, and share one monitoring module, so that the light beam collimation of the whole optical system can be monitored, the monitoring stability is improved, and the space occupation and the hardware cost are reduced. In addition, when collimation monitoring is not carried out, the sampling driving piece can drive the sampling reflecting piece to avoid the light beam of the optical system, and normal operation of the optical system cannot be interfered.

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.

The application belongs to the technical field of optical switching, and particularly relates to an LCOS-based OCS optical switch, which comprises a collimating and polarizing module, a first LCOS, an achromatic Fourier transform lens group and a second LCOS. The collimating and polarizing module collimates, separates and converts a first light beam to obtain a first group of P light beams containing two P light beams. The first LCOS modulates and deflects the first group of P light beams to obtain a second group of P light beams containing a plurality of P light beams emitted at different deflection angles. The achromatic Fourier transform lens group deflects and transforms the waist of the second group of P light beams to obtain a third group of P light beams. The second LCOS modulates and deflects the third group of P light beams to obtain a fourth group of P light beams containing a plurality of P light beams emitted at the same deflection angle. The polarizing and focusing module converts, combines and focuses the fourth group of P light beams into a second light beam composed of S light and P light. The first light beam enters the OCS input port, and the second light beam is output from the OCS output port, so as to realize an optical switching technical scheme which is less affected by external vibration, has good stability and low implementation cost.

Embodiments of the present disclosure relate to optomechanical transducer devices and corresponding methods. An exemplary device includes an optically transparent substrate having a first surface and a second surface; a piezoelectric film disposed on the first surface and oscillating in response to a light beam propagating through the substrate; at least one reflective facet facing the substrate and disposed at the piezoelectric film; and an optical element that receives the light beam at an input end and guides the light beam to an output end coupled to the second surface. The optical element includes an optical focusing path that focuses the light beam at a focal point of the piezoelectric film, and at least one optical collimation path that collimates the light beam onto at least one of the reflective facets. The optical element guides light reflected from at least one of the reflective facets to the input end, and the reflected light indicates the position of the optical element relative to the focal point.

The invention relates to the field of light beam control, in particular to a light beam collimation control method and system of a VCSEL light source. The method comprises the following steps: detecting an initial emergent light beam of a VCSEL light source, carrying out periodic tracking sampling, and determining a light beam structure response characteristic; carrying out region offset calculation one by one according to light beam structure response characteristics to obtain offset compensation parameters of different partitions; adjusting the driving current of the light emitting unit based on the offset compensation parameter to obtain a current adjustment parameter; applying the current adjustment parameter to a VCSEL array in real time, and performing collimation stability evaluation to obtain a stability coefficient; and performing evaluation based on the stability coefficient, and when it is judged that the VCSEL light beam enters a stable collimation state, recording the current adjustment parameter as a collimation adjustment parameter, and entering a low-disturbance maintenance mode. According to the invention, the driving current parameters of the light source are precisely regulated and controlled, so that the light beam collimation precision, stability and anti-disturbance capability are improved.

A quantitative phase contrast imaging system comprises a light source configured to generate light and to direct the light to a sample, wherein the light comprises nonlinearly polarized light; a first lens configured to receive light from the sample; a phase filter, wherein the first lens is configured to focus the light from the sample onto the phase filter, and the phase filter is configured to modulate multiple components of the nonlinearly polarized light simultaneously (e.g., geometric phase interferometry); a second lens configured to receive light from the phase filter; and a polarized camera, wherein the second lens is configured to collimate the light beam from the phase filter to the polarized camera and the polarized camera is configured to image the sample in response to the light from the phase filter. In absence of the second lens, the camera can be placed at the image plane.

The application discloses a multi-pass disk laser amplifier, which comprises a near end and a far end, a pump laser beam, a seed laser beam, a first parabolic mirror, a second parabolic mirror, a laser gain medium, a first deflection optical prism group and a second deflection optical prism group, wherein the laser gain medium comprises a medium reflection surface; the pump laser beam located at the near end is aligned to the first parabolic mirror located at the far end for incidence through a first beam collimator; and the seed laser beam located at the near end is aligned to the second parabolic mirror located at the far end for incidence after passing through a second beam collimator. Compared with a conventional multi-pass disk laser amplifier, the application has a simpler structure, a shorter amplification optical path, a more compact volume and higher system stability. Furthermore, by changing the structure of the design prism of the pump light path, 12-pass, 24-pass, 36-pass, 48-pass and other multi-pass amplifications can be realized.

The invention discloses a parallel light beam collimation method and a parallel light beam collimation device, which are used for collimation of parallel light beams which are not parallel to each other and of which extension lines intersect on the same plane, and comprises the following steps: determining the position and parameters of a convex lens; mutually non-parallel parallel light beams are incident to the convex lens so as to change the propagation direction of the light beams, and the light beams are converged on a rear focal plane of the convex lens; determining the position and parameters of the convex lens array; the light beams converged on the rear focal plane of the convex lens are emitted to the convex lens array after diverging and extending in the new direction, so that divergence angle compensation and correction are carried out on all the light beams, and the light beams are collimated into parallel light. According to the invention, efficient, accurate and stable collimation of parallel light beams which are not parallel to each other can be realized, the method is simple to operate, and the device is simple in structure and low in cost.

There are provided: a light source to generate a laser beam; an optical modulator to superimpose a communication signal on the laser beam; an OHPA to amplify the laser beam; a collimator including a fiber connector and a collimator lens to convert the laser beam amplified into spatial light, and emit the spatial light; an optical telescope to enlarge a beam width of the spatial light and emit the spatial light to a spatial transmission path; a drive mechanism capable of adjusting a focal length of the collimator lens; and a drive controller to determine a drive amount of the drive mechanism in such a manner that a product of a free space loss calculated from a distance between the spatial optical communication transceiver and a spatial optical communication transceiver and a transmission gain determined by a beam spread angle of the spatial light is constant.

Disclosed is a free space optical communication terminal comprising: a first arm interfacing a first port of a beam splitter and comprising a first component configured to emit a divergent first emitted beam and / or utilize a first received beam; a second arm interfacing the second port of the beam splitter and including a second component configured to emit a divergent second transmit beam and / or utilize a second receive beam; and a third arm interfacing the third port of the beam splitter and including a pointing unit configured to direct the first transmitted beam and / or the second transmitted beam to the target and / or to direct the first received beam and / or the second received beam received from the target. The third arm includes an optical element for collimating the transmit beam to provide a collimated transmit beam to the pointing unit and focusing the receive beam to provide a converged beam to the first / second arm. The invention further discloses a light beam guiding method and a carrying tool.

A light detection and ranging (LIDAR) system includes a beam collimator, a plurality of first lenses, a plurality of tunable lenses, and one or more optical sources to generate a plurality of optical beams. Each tunable lens may be disposed adjacent a respective one of the plurality of first lenses such that the respective one of the plurality of first lenses is between the tunable lens and the beam collimator. Each of the plurality of optical beams may pass through one of the tunable lenses and one of the first lenses towards the beam collimator. Each of the plurality of tunable lenses may be separately controllable by selectively applying voltage to the tunable lens to adjust a focal length of the tunable lens to compensate for a variation in focus positions of the plurality of first lenses.

The invention relates to a miniature brain imaging device for two-color fluorescence and an imaging method thereof, and relates to the technical field of biomedical imaging device.The miniature brain imaging device comprises a shell and a lens end cover which are connected, and an imaging light path and an illumination light path are sequentially arranged in the shell and the lens end cover along an imaging optical axis; the imaging light path comprises a lens group, a first dichroscope, a first optical filter and a fifth lens which are arranged in sequence, the lens group is composed of a first lens, a second lens, a third lens and a fourth lens which are arranged in sequence, and the illumination light path comprises a first light source, a second light source, a second dichroscope and a sixth lens. The first light source and the second light source are combined through the second dichroscope to form a collimated light beam, and the collimated light beam is shaped through the sixth lens and then projected to the object plane through the first dichroscope. The application has the effects that different types of neural signals or cell populations can be monitored at the same time, different states or functional modules of neurons can be distinguished, and the resolution and accuracy of data can be improved.

The LSP broadband light source may include a pump source configured to generate a pump beam and one or more collimating optical elements configured to collimate the pump beam into a collimated pump beam. The light source may include one or more focusing optical elements and a beamsplitter located at a conjugate plane between the one or more collimating optical elements and the one or more focusing optical elements. The light source may include a gas containment structure. The beamsplitter may be configured to split the collimated pump beam into a set of pump beamlets, wherein the one or more focusing optical elements are configured to focus the set of pump beamlets to a set of focus positions within the gas to generate multiple plasma regions at the different focus positions.

The utility model discloses a green light strong light control device based on an optical fiber conduction mode, which comprises a green light source module, a light beam collimation and beam expansion module, a heat dissipation module and a driver, and a connection conduction medium between the green light source and the light beam collimation and beam expansion module is an optical fiber; the light beam collimating and expanding module is used for expanding and collimating the light beams emitted by the green light source module into energy-gathered high-power-density light beams, and meanwhile, a high-brightness optical fiber coupling and homogenizing device in the light beam collimating and expanding module performs high-uniformity scattering on the light beams; the driver is used for carrying out continuous constant current driving and stroboscopic modulation control on the green light source module; the heat dissipation module is used for conducting heat dissipation on the green light source module. The overall structural design is simple, the cost can be effectively controlled, and deployment, installation and operation are convenient; in addition, the optical fiber is adopted as a conducting medium, and high reliability is achieved; and meanwhile, a Morse code sending function is realized.