133 results about "Laser illumination" patented technology

The application discloses an indoor water tank sediment starting speed measurement system and method, and aims at solving the technical problem of sensor disturbance to a flow field and influence on data accuracy in the prior art measurement method.The technical scheme core is that the non-contact measurement characteristics of the PIV technology are applied to the whole process from flow field construction to data acquisition.The device is mainly composed of an imaging unit, a laser illumination unit, a movable sliding frame, a water flow adjusting unit and a buffer plate.Optical measurement is performed through the imaging unit and the laser illumination unit, and physical sensors do not need to be arranged in the flow field, so that the interference of the measuring instrument on the water flow structure and the sediment starting process is fundamentally avoided.The integrated movable sliding frame integrates the sediment laying, particle throwing and measurement functions, and is convenient for quickly positioning a test area;in combination with the buffer plate and the water inlet and drainage adjusting unit, a gradually changing flow field from weak to strong can be accurately and stably simulated.

The invention discloses a light source device and laser lighting equipment. The light source device comprises a laser module, a collimation module and a guide module. The collimation module is arranged on a light path where the first light beam and the second light beam generated by the laser module are located and used for generating a first collimated light beam and a second collimated light beam, and the included angle between the second collimated light beam and the first collimated light beam is larger than 0 degree. The guiding module is arranged on the light path where at least one of the first collimated light beam and the second collimated light beam is located and used for changing the propagation direction of the collimated light beams entering the guiding module so that the first collimated light beam and the second collimated light beam can be propagated in the same direction. Due to the existence of the guiding module, the two collimated light beams can be almost parallel to each other or coincide with each other, two light spots corresponding to the two collimated light beams can be smoothly combined into one light spot, and the light source device can be smoothly applied to laser lighting equipment.

This invention discloses an all-weather reconnaissance and alarm device, comprising a laser illumination component, an ICCD / ICMOS gating component, and an integrated processor. The laser illumination component uses high peak power pulsed laser light for illumination assistance, enhancing target brightness. The ICCD / ICMOS gating component is used to achieve high-gain photoelectric conversion of weak optical signals. Specifically, the ICCD / ICMOS gating component eliminates or reduces the influence of sunlight through "ultrafast adaptive imaging + light decay," enabling the component to operate in the linear region with the optimal signal-to-noise ratio for the target. Simultaneously, the ICCD / ICMOS gating component integrates a high-speed CCD / CMOS image sensor. Without changing the delay time, a higher image intensifier repetition frequency results in a smaller increase in delay time. Through ultra-high-speed image acquisition, it fully utilizes the energy of each laser pulse, enabling imaging of targets at different distances and high-speed moving targets. The integrated processing component focuses on controlling the ultrafast adaptive adjustment duration, the interval between auxiliary illumination and gating opening, and high-precision gain control.

The application discloses an optical device, a laser lighting device and a vehicle, and belongs to the technical field of lasers, and comprises a fluorescent powder sheet, a reflector and a lens; the fluorescent powder sheet, the reflector and the lens are coaxially arranged along a transmission direction of a laser beam; a side of the lens facing the fluorescent powder sheet is provided with a groove, the reflector is arranged at the bottom of the groove, and the fluorescent powder sheet is arranged at a notch position of the groove; the direction of a light-receiving surface of the fluorescent powder sheet and the direction of a light-reflecting surface of the reflector are opposite to the transmission direction of the laser beam; the fluorescent powder sheet is used for emitting excited light under irradiation of the laser beam; the reflector is used for reflecting the laser beam or the excited light through the light-reflecting surface; and the lens is used for changing the direction of the excited light to form a high-beam lighting spot or a low-beam lighting spot. When the fluorescent powder sheet is broken or falls off, the laser beam is directly irradiated on the light-reflecting surface of the reflector, direct irradiation of the laser beam out of the lens to cause harm to human eyes can be avoided, and the use safety of the optical device is improved.

The application relates to the technical field of laser lighting, in particular to a non-electric manual laser switch and a using method thereof, and aims to solve the problems of poor explosion-proof performance, high laser leakage risk, large coupling loss and stray light interference of an existing laser switch. The switch is connected in series between a light fiber at a light emitting end of a laser and a light fiber at a receiving end of a lighting system, and comprises a manual operating mechanism, a double-lens assembly, a high-precision positioning pin, a light cone assembly, a stray light protection piece and a shell. The switch realizes light path on-off through pure mechanical manual operation. When the switch is turned on, the double lens is accurately aligned through the positioning pin, and laser is coupled and transmitted with low loss. When the switch is turned off, the light cone absorbs laser on the laser side, and the stray light protection piece blocks external stray light. The switch does not have any electrical components, meets the Exd IIC T6 explosion-proof grade, has a coupling loss of less than or equal to 0.2 dB, has laser leakage of less than or equal to 0.01 mW when turned off, is suitable for environments of-40 DEG C to 85 DEG C, and is suitable for explosion-proof scenes such as natural gas pipe corridors and chemical industrial parks. The switch is convenient to operate and has a long service life.

Disclosed is a system and method for solid-state 2D optical phased arrays (OPAs), which are fabricated from InGaN / AlGaN multiple quantum wells (MQWs) and AlyGa1-yN / AlxGa1-xN (y<x) MQWs. The InGaN / AlGaN MQWs and AlyGa1-yN / AlxGa1-xN (y<x) MQWs include alternating p-type and n-type layers to form p-n-p-n MQW structures to allow the OPA to operate in the reversed biased configuration to further minimize the operating current and heat generation. The phase in each pixel within the OPA will be controlled independently via electro-optic effect in III-nitride MQWs by varying the voltage in each pixel by a Si CMOS array to achieve the manipulation of the distribution of optical power in the far field and steering of the main laser beam. The present disclosure is applicable to a wide range of applications, including the operation of LIDAR systems, laser weapons, laser illuminators, and laser imaging systems.

The embodiment of the application provides a kind of fingerprint sensor and its manufacturing method, electronic equipment, it is related to display technical field.The fingerprint sensor includes TFT circuit layer and flexible substrate;Light shielding layer, light shielding layer is set to the side of TFT circuit layer close to flexible substrate.This scheme is by setting light shielding layer in fingerprint sensor, and light shielding layer is set to the side of TFT circuit layer close to flexible substrate, can block the laser illumination from the direction of flexible substrate, reduce the photo-generated carrier effect caused by laser illumination, to reduce the leakage current of TFT, improve its electrical properties, to a certain extent, improve the signal quality and working reliability of fingerprint sensor.

Laser light module (31) for a motor vehicle headlight (10) comprising a laser (18), a converter (22) arranged in the beam path of a laser radiation (30) emanating from the laser, which converter scatters part of the incident laser radiation from the laser and converts part of it into secondary radiation with a wavelength longer than that of the laser radiation, a detector (40) arranged in a beam path of radiation emanating from the converter and which generates a measured value as an actual value dependent on the amount of radiation emanating from the converter and incident on the detector, and a control unit (26) which compares the actual value with a target value and controls the laser depending on the comparison of the actual value with the target value, characterized in that the laser light module has a light deflection unit (20) with which different sub-areas (22.a, 22.1, 22.b) of the converter can be illuminated with laser radiation separately from each other in time and wherein the detector records sub-area-specific actual values ​​for different sub-areas and wherein the control unit is set up, in particular programmed, to determine the target value for a first sub-area as a function of an actual value that has been determined for a different sub-area.

The invention discloses a tape casting preparation method of multi-layer fluorescent microcrystalline glass based on in-situ compounding, and belongs to the technical field of functional glass ceramic composite material preparation. The method aims at solving the problems that in a traditional lamination process, the interface bonding force is weak, layering is prone to occurring, and the optical performance is damaged, the core step of the method is a one-step composite forming process after gradient drying and in-situ tape casting, and a prepared multi-layer fluorescent microcrystal composite green body is subjected to programmed glue discharging and co-sintering treatment; the multi-layer fluorescent microcrystalline glass with a compact interface and good optical performance is successfully obtained. Through the in-situ tape casting composite technology, tight combination between interface layers is achieved, interface pores and light scattering centers are effectively reduced, the mechanical strength, thermal stability, fluorescence luminous efficiency and uniformity of the material are remarkably improved, and the material is suitable for advanced photoelectric devices for full-spectrum healthy lighting, high-power LEDs, laser lighting and the like.

An apparatus for generating a defined laser illumination (12) on a work plane (14) has a laser light source (20) that generates a raw laser beam (22). An optical assembly (24) receives the raw laser beam (22) and shapes it into an illumination beam (26) along an optical axis (40). The illumination beam (26) defines a beam direction (28) that intersects the work plane (14). The illumination beam (26) has a beam profile (42; 42') in a region of the work plane (14) that has a major axis (44) perpendicular to the beam direction (28) with a major axis beam width and a minor axis (46) with a minor axis beam width. The optical assembly (24) includes a beam transformer (30) with an exit aperture, a first set of optical elements (56, 60, 62, 64) for beam shaping on the major axis, and a second set of optical elements (34, 36, 38) for beam shaping on the minor axis. The beam transformer (30) widens the raw laser beam (22) on the major axis to generate a widened raw laser beam. The first set of optical elements (56, 60, 62, 64) includes a homogenizer (56) that homogenizes the widened raw laser beam on the major axis. The second set of optical elements (34, 36, 38) includes at least one lens (38) that images the exit aperture of the beam transformer (30) into the work plane. The first set of optical elements (56, 60, 62, 64) generates an intermediate image (66) behind the homogenizer (56) and further implements an imaging optical unit that images the intermediate image (66) into the work plane (14).

This application provides a dynamic tool setting device and method for diamond micro-end milling cutters, relating to the field of precision and ultra-precision machining technology. The method includes the following steps: acquiring a time-series pulse sequence of time-division multiplexing images; and performing tool setting detection on the diamond micro-end milling cutter based on the time-series pulses. This application utilizes the diffraction interference imaging principle of diamond micro-end milling cutters under coaxial laser illumination, employing object-side telecentric vision imaging to ensure a fixed holographic image magnification and microscopic imaging accuracy. By setting the camera trigger acquisition pulse through an external trigger controller via a host computer, the rotating image of the diamond micro-end milling cutter is sampled in a time-division multiplexing manner, achieving full-contour holographic imaging of the diamond micro-end milling cutter under rotating conditions. Simultaneously, by designing a downsampling holographic autofocus algorithm in holographic image processing, the computational load for image holographic reconstruction is reduced, accelerating the tool setting calculation efficiency and providing high-precision tool setting technology support for ultra-precision micro-milling.

A non-sintering technique is used to prepare a fluorescent thin film for laser lighting. This fluorescent film comprises a 0.5–2 mm thick aluminum substrate with a visible light reflectance greater than 95%, and a 100–500 μm thick emitting layer on the aluminum substrate. The emitting layer is obtained by mixing a fluorescent material and a fixative at 40–80 °C using a non-sintering technique. Under blue light excitation at 450 nm, the light emitted by the emitting layer mixes with unabsorbed blue light to produce white light with a color temperature range of 3000 K–4500 K and an Ra value of 90–98. The fluorescent thin film for laser lighting prepared by this invention has a simple overall structure and a convenient preparation process; the nitride red fluorescent material is not sintered, thus greatly preserving its luminescent properties; and the preparation process does not use water, which would decompose the nitride red fluorescent material; the fluorescent film is directly coupled to a highly thermally conductive aluminum plate, thereby enabling the fluorescent film to be used in laser lighting.

The invention discloses a laser illumination and imaging lens group for a shadow imaging system, the laser illumination and imaging lens group comprises an illumination lens and an imaging lens, the illumination lens shapes a Gaussian beam into a flat-topped beam, and the flat-topped beam uniformly irradiates an object to be observed; the imaging lens images the target area to obtain a shadow contour image of the observed object. The illumination lens comprises a first lens with negative focal power and a second lens with positive focal power, and the first lens and the second lens are both aspheric lenses. The imaging lens comprises a front lens group, an aperture diaphragm and a rear lens group, the front lens group comprises a third lens, a fourth lens, a seventh lens and an eighth lens with positive focal power, and a fifth lens and a sixth lens with negative focal power, and the rear lens group comprises a ninth lens with negative focal power and a tenth lens with positive focal power. And all the lenses are spherical lenses. While the collimation and dodging effects of the laser beams are ensured, the system also has the advantages of long working distance, high resolution and the like, can meet the observation requirements of a non-luminous high-speed small-size moving object, and expands the application field of a shadow imaging system.

The invention belongs to the field related to information security and identity authentication, and particularly relates to a reconfigurable optical PUF (Physical Unclonable Function) based on a photorefractive effect and an authentication system and method thereof, the reconfigurable optical PUF has the stable cross-linked structure characteristic of a solid optical PUF, and a reconfiguration principle based on refractive index modulation of the photorefractive effect is fused. On the basis, the authentication method and system of the reconfigurable optical PUF based on the photorefractive effect are constructed; in the system, two paths of laser illumination PUF (Physical Unclonable Function) of detection and pumping are coupled from a light path structure by adopting a coupling device, an arranged laser power regulation module can regulate the power of the pumping laser, control the total energy of pumping photons injected into the optical PUF, excite a carrier self-built field to modulate the carrier self-built field or other polar molecules, and control the light path of the optical PUF. Therefore, the scattering characteristic of the optical PUF can be dynamically reconstructed in a controllable state. The PUF is illuminated by detection laser to form speckles to generate a key for identity authentication. The method has the advantages of high safety, high reliability and the like, and is suitable for the field with high safety requirements.

The invention relates to the technical field of laser illumination, in particular to a laser diode agricultural illumination system and method based on a combined spectrum, and the system comprises a light source module, an illumination intensity adjustment module, an illumination time control module, a spectrum monitoring module and a feedback adjustment module. According to light quality requirements of leaf vegetables and solanaceous crops in different growth stages, a spectrum combination proportion is determined, a specific wavelength spectrum is supplemented, illumination intensity is dynamically adjusted according to a plant growth state, illumination time is set according to crop types and growth stages, the spectrum is monitored in real time, optimal parameters are compared, and a spectrum combination is adjusted according to deviation. Spectrum, light intensity and illumination time are accurately matched with crop requirements, light energy waste is reduced, it is guaranteed that crops obtain proper illumination conditions in all growth stages, photosynthesis efficiency is promoted to be improved, and efficient and accurate development of agricultural production is promoted.

The present application relates to the technical field of image processing, in particular to a kind of real-time optical tracking method and system of moving target based on passive guidance.The approximate coordinates of moving target are obtained by passive direction finding station;And according to the approximate coordinates, control laser illumination unit to light moving target body, utilize binocular camera unit to carry out image acquisition and visual analysis to moving target, to obtain the position change of moving target;Combining the position change of moving target, determine the trajectory pose of moving target.Using call camera unit, the whole tracking of moving target is carried out, and the flight state of moving target collected is transmitted to host computer in real time for display.The present application realizes real-time positioning of moving target by the fusion mode of passive direction finding station and binocular optical system, realizes real-time accurate positioning of moving target in the case of building, vegetation dense and low visibility.

The utility model discloses an astronaut modeling light device, which belongs to the related technical field of laser illumination and comprises a stainless steel plastic spraying shell, curved glass, a reflecting mirror, an electric holder, a cooling fan and a laser transmitter. The reflecting mirror and the electric holder are located at the head position of the stainless steel plastic spraying shell, laser emitted by the laser emitter is reflected to the curved glass through the reflecting mirror, the laser emitter is arranged in the stainless steel plastic spraying shell, the problem that the laser emitter is exposed outside is solved, the concealment of the laser emitter is achieved, and the laser emitter is convenient to use. The attractiveness and the ornamental value are increased, and the attractiveness and the practicability are combined; meanwhile, safe use of the laser transmitter is guaranteed, and man-made damage is reduced; the holographic laser device is attractive in appearance, has ornamental value, has more science and technology feeling for the performance holographic laser, can present varied images, generates a shocking visual effect, and integrally integrates practicability and decorative attractiveness into a whole.

The present disclosure provides a laser lighting system. The laser lighting system includes a microcontroller, a motor, a fluorescent color wheel, and a detection circuit. The motor drives the fluorescent color wheel to rotate. The detection circuit detects a detection signal from the fluorescent color wheel. When a synchronization signal changes, the microcontroller compares the synchronization signal and the detection signal, and controls a current output signal for driving the motor, thereby reducing a phase change of the detection signal and the synchronization signal until a phase difference between the detection signal and the synchronization signal is maintained at a constant value.

The invention discloses a fluorescent glass ceramic membrane with high color temperature uniformity and a preparation method and application thereof, and belongs to the technical field of laser illumination and display. A preparation method of a fluorescent glass ceramic membrane with high color temperature uniformity comprises the following steps: S1, uniformly mixing lithium disilicate glass powder, garnet fluorescent powder and an organic solvent to obtain slurry, and coating a substrate with the slurry to obtain an intermediate material; and S2, carrying out two-step heat treatment on the intermediate material to obtain the fluorescent glass ceramic membrane with high color temperature uniformity. The lithium disilicate glass forms an interlocking microcrystalline network structure in the fluorescent glass ceramic through two-step heat treatment by utilizing a nucleation crystallization mechanism of the lithium disilicate glass. The lithium disilicate glass with the microcrystalline interlocking network structure not only can ensure the compactness of a fluorescent glass ceramic film, but also can provide a scattering medium for blue laser, so that the scattering effect of the blue laser in a fluorescent conversion layer is remarkably improved, and the color temperature uniformity of white laser is further improved.

This application provides a method includes: obtaining a to-be-processed point cloud and a reference gray image corresponding to a radar field of view, where the to-be-processed point cloud is synthesized by point clouds of a plurality of units, the reference gray image is synthesized by gray images of the plurality of units, a point cloud of a first unit is obtained under laser illumination, a gray image of the first unit is obtained under ambient light illumination, the point cloud of the first unit and the gray image of the first unit are alternately collected by a same sensor, and the first unit is any one of the plurality of units; obtaining a contour of a target based on the reference gray image; and complementing the to-be-processed point cloud based on the contour of the target to obtain a target point cloud.

The invention relates to a direct flight time ranging method and system for structured light illumination, and belongs to the technical field of industrial automation, and the method comprises the steps: projecting a structured pulse laser illumination field to a target scene; the structured pulse laser illumination field forms a space pattern with a light and shade alternating contrast characteristic in the space; the spatial pattern at least comprises a high-brightness active illumination area and at least one low-brightness or non-illumination background reference area; identifying and separating a background light signal from a background reference area from light signals based on the distribution of the light signals of the active lighting area and the background reference area in the space pattern by projecting a structured pulse laser lighting field; according to the invention, the background noise component is estimated based on the background light signal, and the noise contribution related to the background noise component is removed from the light signal reflected by the target object in the target scene to obtain the effective signal after background suppression, so that the effective noise removal and the accurate detection of the effective signal are facilitated, and the distance measurement accuracy is improved.

The application discloses a zoom laser illuminator of an elliptical light spot, which comprises a rear fixed group, a compensation group, a zoom group and a front fixed group which are sequentially arranged along an optical axis from an optical fiber end face outward, the front fixed group is provided with a non-rotationally symmetrical mirror group, the non-rotationally symmetrical mirror group is provided with a cylindrical type double quadratic surface mirror, and the control of a light spot aspect ratio is realized. According to the application, a specific relationship is met at any zoom position, the illumination light spot is ensured to be an ellipse with a ratio of major axis to minor axis of 16:9, and the ratio of major axis to minor axis of the light spot is unchanged at any illumination angle. The illuminator realizes the change of focal length by moving the internal mirror group along the optical axis direction, and the image plane position is basically unchanged during the zooming process. The lens with the double quadratic surface type is used to realize the control of the meridian and sagittal direction focal length. The laser illuminator disclosed by the application can emit an elliptical light spot, has the zoom function, the ratio of major axis to minor axis of the light spot is unchanged during the change of the illumination angle, and can be matched with a zoom lens.

This invention discloses a visualization measurement method for solid-liquid phase change of electrically controlled solid propellants based on image recognition. The method is implemented using an electrode clamping device and includes synchronous control of image acquisition and laser illumination, background subtraction combined with adaptive threshold binarization, application of regional constraints and morphological image processing, extraction and tracking of phase change interface features, and statistical analysis of target parameters. This method enables continuous and intuitive optical observation of the solid-liquid phase change process, achieving high-fidelity visualization of the phase change process before combustion. Through the synergistic effect of laser directional illumination and image recognition algorithms, it effectively distinguishes the solid region, liquid molten region, and suspended particle region of the propellant. Candidate motion regions are segmented using background subtraction combined with adaptive threshold binarization, reducing light interference caused by laser illumination. This achieves effective identification and interface extraction of the main solid-liquid phase change region and weak phase change region, improving the accuracy of phase change morphology characterization.

An image projector employs a laser scanning illumination device to illuminate a spatial light modulator (SLM), wherein an angular beam expander element, typically a diffuser or micro-lens array (MLA), adjacent to the SLM or in a conjugate plane to the SLM enhances the fill of the exit aperture while minimizing the impact on the scanning accuracy of the laser illumination on the SLM. Various schemes for synchronizing the rolling shutter update of the SLM during the scanning illumination are also disclosed, as well as systems employing a binary switchable SLM.

An instrument measurement package is provided for assessing response effect from laser illumination onto a target. The package includes a photodiode, a circuit board, an illumination indicator, an enclosure and a battery. The photodiode measures the laser illumination as an incidence signal. The circuit board accommodates a power relay, a microprocessor, a clock and a flash memory card for recording the incidence signal. The illumination indicator displays a result from the incidence signal by activation. The enclosure contains the circuit board and mounts the photodiode. The battery supplies direct current voltage to the circuit board via the power relay.

The invention discloses a large-baseline double-view-angle three-dimensional scanning device and method and a storage medium. The device comprises a first scanning unit and a second scanning unit which are arranged on the two sides of a target space, and each scanning unit comprises a zoom imaging unit with an adjustable focal length and a laser illumination unit with an adjustable divergence half angle. The calibration module is used for establishing a geometrical relationship between the two scanning units and obtaining parameters such as an external parameter matrix R and a translation vector t. The control unit is configured to realize synchronous triggering of laser emission and camera exposure; image frames under different optical parameters are obtained by adjusting the focal length f and / or the divergence half angle beta of at least one scanning unit; and inhibiting optical mutual interference between the double view angles by adopting a time-sharing and / or coding mode. And the processing unit extracts the edge of the annular or approximately annular illumination area from the image sequence, calculates three-dimensional point clouds of the two view angles based on the triangulation principle, and performs registration and fusion on the point clouds to obtain three-dimensional point cloud data of the current cross section. The method is suitable for high-precision three-dimensional shape measurement of long and narrow spaces such as tunnels, underground pipe galleries and large pipelines, and has the advantages of being large in measurement range, high in shielding resistance, high in point cloud precision, good in long-term stability and the like. The method mainly solves the problems of geometric layout of a multi-scanning unit system level, collaborative time sequence and point cloud fusion consistency, and compared with an optical parameter optimization scheme of a single scanning unit, the method has more advantages in the aspects of coverage integrity and long-term stability.

The invention provides a phase amplification microscopic imaging method with sub-angstrom level measurement precision. The method comprises the following steps: providing a phase cavity implementation method and connecting the phase cavity with an interference imaging system so as to effectively amplify a weak phase signal of a target sample; modeling the resonance effect in the phase cavity; and optimizing parameters of the phase cavity, such as a material of the phase cavity, a thickness of each layer of the phase cavity, and an illumination wavelength, to maximize amplification of the phase signal of the target sample. The phase cavity is arranged on the sample side of the interference imaging system. The method may further include obtaining a phase diagram through an interference imaging system based on laser illumination, and executing a transmission matrix-based model on the measured phase diagram to reconstruct a thickness mapping result, enabling effective detection of deep sub-wavelength size defects in the three-dimensional stacked sample. The measurement precision of the interference imaging system can reach 0.1 angstrom.

The invention discloses purple light excited red oxynitride glass ceramic as well as a preparation method and application thereof, and belongs to the technical field of fluorescent glass ceramic. The crystal chemical general formula of the red-light oxynitride glass ceramic is Mg2Al4Si5 (ON) 18: Eu < 2 + >, the crystal structure belongs to a hexagonal crystal system, and the space group is P6 / mcc. According to the preparation method, the emission spectrum red shift of the Eu < 2 + > ion doped Mg2Al4Si5 (ON) 18 fluorescent material is induced through the regulation and control means of partial nitridation, the red light waveband coverage range is widened, the red light color purity is effectively improved, the preparation method of melting cooling and in-situ crystallization is adopted, the prepared material is an inorganic block material, the thermal stability and chemical stability of the material are improved, and the preparation method is suitable for industrial production. The material can be applied to the fields of white light LED devices, laser illumination display, plant illumination, optical medical treatment and the like.

The utility model discloses a novel two-gear switching type high-brightness laser illumination laser which comprises a laser illuminator and a laser lamp emission optical fiber head arranged on the left side of the laser illuminator, and a movable connection guide rod is arranged in the laser illuminator. A zoom group structural body is arranged on the side face of the movable connecting guide rod, a zoom group irradiation groove is formed in the middle of the zoom group structural body, two spherical lenses are arranged in the zoom group structural body, and the zoom group structural body can move up and down along the movable connecting guide rod. The beneficial effects of the utility model are that only the spherical mirror group is adopted, compared with aspherical mirrors and spherical mirrors, the processing difficulty is low, the processing cost is low, and the assembly precision requirement is low, the high-precision one-dimensional translation stage is adopted as a zoom group cut-in / cut-out assembly, and the precision of the translation stage is ensured by the grating and the optical encoder when the divergence angle is switched. And high-precision laser pointing can be ensured.