775 results about "Point light" patented technology

The invention relates to a light path system for forming point ring light spots and a laser processing device. The light path system comprises a first light source, a first collimating lens, a first conical lens and a reflecting mirror which are arranged in the first linear direction. The second light source, the second collimating lens, the focusing lens and the second conical lens are arranged in the second linear direction, the reflecting mirror is located between the second collimating lens and the focusing lens, and the center of the reflecting mirror and the center of the second conical lens are each provided with a through hole allowing a second light beam emitted by the second light source to penetrate through; a first light beam emitted by the first light source passes through the first collimating lens and the first conical lens and then is reflected by the reflector, and the reflected first light beam sequentially passes through the focus lens and the second conical lens and then forms an annular light spot at the focus of the focus lens. A second light beam emitted by the second light source sequentially passes through the second collimating lens and the focus lens and then forms a point light spot located in the center of the annular light spot at the focus of the focus lens. The composite light spot of the center point light spot and the outer ring light spot can be formed, the structure is simple, and the manufacturing cost is low.

The invention discloses a detection method of an ocean magnetic field sensor based on a diamond NV color center. The detection method comprises the following steps: S1, calibrating a base line; s2, alternately measuring fluorescence between two single quantum resonance frequencies, and obtaining a difference to realize DQ reading; s3, three-axis compensation current is adjusted based on closed-loop control, and the NV working point is maintained at zero magnetization bias; s4, obtaining background magnetic field change through digital demodulation and adaptive filtering; and S5, calculating a gradient based on the spatial difference of the multi-point light spots, judging the existence and trajectory of the underwater vehicle in combination with a threshold value and a spectrum matching method, calibrating the threshold value according to the magnetic field characteristics of the existing underwater vehicle, adopting short-time Fourier transform signal spectrum, comparing the threshold value with known submarine characteristic spectrum data, and prompting if the similarity exceeds a set threshold value. According to the detection method, the measurement precision and the anti-interference capability can be improved, and the method is suitable for real-time monitoring of weak magnetic anomalies (such as magnetic moment disturbance of an underwater vehicle).

The invention discloses a point light source electron accelerator which comprises a sealing box body, a cathode, a laser emitter, a reflecting cover, a grid plate and a mounting plate, the mounting plate is erected in the sealing box body, a mounting hole is formed in the mounting plate, the cathode is mounted in the mounting hole, and the laser emitter is arranged in the sealing box body. The reflecting cover is arranged at the top of the mounting hole; the reflecting cover is a semi-spherical surface, a laser through hole is formed in the top of the semi-spherical surface, and the laser through hole is coaxial with the cathode; the transmitting end of the laser transmitter is aligned with the cathode; the grid plate is mounted below the mounting plate and is aligned with the mounting holes; and an electron outlet is formed below the grid plate. The invention provides a point light source electron accelerator, and the point light source electron accelerator provides a light and miniaturized electron accelerator design, so that the application field of the accelerator is wider.

The invention discloses a ship cabin illumination brightness automatic adjustment method based on a fuzzy neural network. The method comprises the steps of ship cabin brightness data acquisition and cleaning estimation; the method comprises the following steps of: cleaning brightness data acquired by a plurality of sensors distributed in an indoor environment and an outdoor environment of a ship cabin by using a self-adaptive weighted fusion algorithm so as to obtain brightness estimated value data of the ship cabin; constructing a ship cabin illumination brightness automatic adjustment model based on the fuzzy neural network; obtaining horizontal and vertical illuminance of the point light source according to the ship cabin brightness estimation value data; inputting the obtained illumination into an automatic adjustment model, and performing fuzzification processing on parameters by the model to generate fuzzy linguistic variables; and performing fuzzy reasoning according to the generated fuzzy linguistic variable and the fuzzy rule base to obtain fuzzy output, thereby realizing adjustment of the contrast. Experimental results prove that the method can complete automatic adjustment of the illumination brightness of the ship cabin and ensure the comfort of the illumination brightness in the cabin.

The invention provides an inter-satellite laser communication sun-sun avoidance method and system, computer equipment, a storage medium and a program product. The method comprises the following steps: determining a current unit pointing light vector of a laser communication terminal under a J2000 coordinate system as a first unit pointing light vector; acquiring a sun vector under a J2000 coordinate system; calculating an included angle between the first unit directional light vector and the sun vector; if the included angle is not larger than the preset angle, the first unit pointing light vector is rotated by a second angle in the component direction of the first unit pointing light vector on the sun vector normal plane, and the angles are iteratively adjusted and accumulated until the accumulated angle exceeds the preset angle; and then planning a motion trail of the vector after rotation towards a safe direction on a normal plane so as to realize sun-sun avoidance. According to the method, the sun-sun can be avoided before and after the inter-satellite laser communication is established, the terminal is prevented from directly looking at the sun by directionally rotating along the normal plane component, the safety of the avoidance process is remarkably improved, and meanwhile, the directional stability is favorably maintained.

The invention discloses a multi-light-spot anti-interference deformation measuring device and method based on stroboscopic energy spectrum.The multi-light-spot anti-interference deformation measuring device comprises a point light source, a first cylindrical mirror is arranged below the point light source, a first linear array sensor is arranged below the first cylindrical mirror, and the first linear array sensor is electrically connected with a data acquisition device; light emitted by the point light source passes through the first cylindrical mirror and then is focused into a line segment to be imaged on the first linear array sensor, and the first linear array sensor converts optical signals of the focused line segment into digital signals and outputs the digital signals to the data acquisition device. According to the multi-light-spot anti-interference deformation measuring device, a multi-dimensional displacement sensor measuring system is established by applying the cylindrical mirror, the linear array sensor and the point light source, a displacement measuring system with high precision, high resolution and high sampling rate can be realized, and the multi-light-spot anti-interference deformation measuring device is few in related components, small in size, simple to maintain, low in cost, high in system stability and easy to popularize. The method is more suitable for outdoor multi-point monitoring of engineering structures.

The invention relates to the technical field of optical wireless communication, in particular to an optical wireless communication device and method based on beam shaping, and the device comprises a beam shaping module which comprises at least one beam shaping lens so as to convert a beam outputted by a point light source into a uniformly distributed linear or planar light field; the optical transceiver module comprises a plurality of optical base stations, the optical base stations are arranged in a redundant mode in the extension direction of the communication scene, each optical base station integrates at least one optical transmitter, an optical detector and a plurality of prisms and is used for transmitting and receiving optical signals, and the coverage range of the single optical base station is expanded through the prisms; and the dynamic demodulation module is connected with the optical detector, and dynamically adjusts the demodulation threshold value of the corresponding bit error rate according to the real-time channel state. Therefore, when the technology is applied to wireless optical communication, the communication performance can be improved, the coverage distance can be increased, the coverage uniformity can be improved, the bit error rate can be reduced, the construction cost can be reduced, and the long-term stable communication requirement of a closed scene can be met.

The invention belongs to the technical field of laser processing, and provides a powder laying layer thickness and beam shaping coordinated regulation and control system and method for laser additive manufacturing, and the system comprises a light source device which is used for emitting laser beams required by additive manufacturing; then, when the manufacturing and forming device determines the thickness of the powder laying layer needed by laying, the light source device uses a point light source and / or an annular light source to emit laser beams, and the spot diameter of the laser beams or the size of a molten pool formed by the laser beams is dynamically adjusted according to the thickness of the powder laying layer. The method has the beneficial effects that intelligent segmentation and process planning are conducted on all parts of the L-PBF forming component, the large-layer-thickness powder laying-large-size light source forming process and the small-layer-thickness powder laying-small-size light source forming process are adopted, and meanwhile the forming precision and efficiency of the component are considered.

The utility model discloses an artificial climate chamber water-cooling seedling raising vehicle, a chassis comprises a bottom frame, a support is connected to the bottom frame, and trundles are connected to the bottom of the bottom frame; the supporting pieces are connected to the corners of the bottom frame; the multiple groups of clamping strips are arranged up and down, each group comprises two clamping strips, heat dissipation holes are formed in the clamping strips, and the two ends of the clamping strips are connected to the supporting pieces; the light guide plate is clamped between each group of clamping strips, and light guide points are arranged on the light guide plate; the light source is inserted into the clamping strip and irradiates the side part of the light guide plate; the water inlet pipe is connected to the supporting piece, and one end of the heat dissipation hole of the clamping strip communicates with the water inlet pipe; the water return pipe is connected to the supporting piece, and the other end of the heat dissipation hole of the clamping strip communicates with the water return pipe. Compared with the prior art, the circulating water cooling system enables the seedling raising vehicle to keep a proper temperature environment, damage to seeds or seedlings caused by too high temperature is avoided, and seed germination and seedling growth are facilitated.

The utility model discloses on-machine measuring equipment suitable for large-scale deep blind hole processing, which belongs to the field of processing equipment, and is characterized in that a measuring assembly is arranged aiming at a cutter bar, and the inner diameter of a corresponding measuring point of a large-scale deep blind hole in the opposite direction is respectively measured by utilizing the combined arrangement of a measuring ball module and a point light source module, so that the inner diameter measured value of the measuring point is obtained; and on-machine measurement of the inner diameter of the large-scale deep blind hole is realized. The on-machine measuring equipment suitable for large-scale deep blind hole machining is simple in structure and convenient to operate, an existing machine tool structure can be effectively utilized, on-machine measurement of a large-blind-hole workpiece can be achieved only by simply transforming the existing machine tool structure, secondary clamping and positioning of the workpiece caused by measurement are avoided, and the working efficiency is improved. The precision and efficiency of inner diameter measurement in the machining process of the large-scale deep blind hole workpiece are improved, guarantee is provided for the final finish machining efficiency and precision of the workpiece, the machining cost and application cost of the large-scale deep blind hole workpiece are reduced, and good economic value and practical value are achieved.

The invention provides a coaxial collection laser-induced breakdown spectroscopy device. The coaxial collection laser-induced breakdown spectroscopy device comprises a computer, a laser, a 9-to-1 spectroscope, a photoelectric external trigger unit, a reflector, a dichroscope, a galvanometer group, a field lens, a double-focusing lens group, a spectrograph optical fiber probe and a spectrograph, a laser beam passes through the 9-to-1 spectroscope and the reflector, is deflected, then enters the dichroscope, penetrates through the dichroscope, enters the galvanometer group, is reflected by the X reflector and the Y reflector for multiple times and then enters the field lens, and parallel light is focused to a test sample. A laser induced plasma emission spectrum generated in the laser cleaning process serves as a point light source and is converted into parallel light through a field lens, and then the parallel light enters a dichroscope through an original path of a galvanometer set, deflects to enter a double-focusing lens set and is stably focused to a spectrograph optical fiber probe to be processed and analyzed by the spectrograph. The coaxial collection light path is applied to the galvanometer laser head, plasma emission light can be directly collected in the laser cleaning process, and more efficient signal collection and processing are achieved.

The utility model provides an atmosphere projection lamp which comprises a shell, a light path channel is formed in the shell, and a light-emitting bottom plate used for emitting dynamic pattern light beams and a lens set are arranged in the light path channel. The light-emitting bottom plate comprises a base plate and a plurality of lamp beads arranged on the base plate, and the lamp beads are arranged in an array mode. The lens group comprises at least one Fresnel lens and a plano-convex lens, and the Fresnel lens and the plano-convex lens are sequentially arranged on a light emitting path of the light emitting bottom plate; light emitted by the light-emitting bottom plate sequentially passes through the Fresnel lens and the plano-convex lens to form soft pattern projection. According to the utility model, the surface light source and the point light source emitted by the lamp panel are subjected to scattering blurring and focusing of the gathered light beams so as to improve the lighting effect, so that the transition edge of the generated pattern is better in soft feeling, and the original shape of the dynamic pattern is kept while the light atmosphere feeling is improved.

Systems and techniques are described for detecting surface profile defects within a moving web. An example system includes a conveyor configured to translate the web, along a downweb direction and at a translation speed, relative to an inspection area; a point light source configured to emit light, wherein the point light source is positioned and oriented relative to the conveyor to illuminate a portion of the web positioned within the inspection area; a diffusing screen positioned and oriented relative to the conveyor to receive the light reflected from the web as the web is translated through the inspection area; an image capture device configured to capture images of the diffusing screen; and a computing device configured to: identify, based on the images, a surface profile defect in a surface of web; and output data indicating a relative location of the defect within the web.

A control system and control method for LED string light source with fast control speeds, occupy low signal transmission capacity, and can smartly detect faults in the LED string light source, wherein comprising an LED string light provided with a plurality of LED point light sources, a power line and data control line connected between the decoder controller and each LED point light source. Address lines are used in the LED string light source to connect all address pins of the smart driver chip in series based on the numerical order of the electrical connection of the decoder controller. The smart driver chip requires rewriting the temporary address once every power-on cycle. Since the chip has a signal feedback function, users do not need specialized personnel to effectively use the decoder controller to assess the status of the point light source.

A warning light, including a point source configured to emit a front light, and one or more side firing light sources, where the first side firing light source and the second side firing light source are configured to emit one or more side lights at an angle substantially perpendicular to the front light, and where the one or more side lights are configured to illuminate an emergency vehicle. Further, a system including two or more warning lights as described herein, an emergency vehicle, and a processor configured to communicatively couple the two or more warning lights.

The invention discloses a miniature light-emitting diode chip which comprises a light-emitting mesa, a passivation layer and a reflecting layer, the passivation layer is located between the light-emitting mesa and the reflecting layer and at least covers the side surface of the light-emitting mesa, the reflecting layer is arranged on the surface of the passivation layer, and at least one part of the surface, facing the passivation layer, of the reflecting layer is a curved surface. By adopting the reflecting layer with the curved surface, a point light source can be collimated into parallel light, so that total reflection is reduced. The collimated parallel light beams can transmit light more effectively, scattering and loss of the light are reduced, and then distribution and direction of the light are controlled flexibly.

A defect detection method based on laser measurement, which has a simple structure, achieves low cost and is convenient to use, and comprises: obtaining a detection device, wherein the device comprises a laser (1), a first cylindrical lens unit (2), a second cylindrical lens unit (3), a marking unit (4), an operation unit (5), a photoelectric probe (6), and a product conveyor belt (7), and using the first cylindrical lens unit (2) to convert point light emitted by the laser (1) into linear light, wherein the linear light is parallel light; obtaining a product (8) under test, using the product conveyor belt (7) to convey the product (8) under test for detection, using the product conveyor belt (7) to limit the product under test, and enabling the linear light to cover an area under test on the product under test for detection; and performing detection from the time when the linear light illuminates the area under test to the time when the linear light moves beyond the area under test.

The point light source lamp comprises a lamp outer shell, a light source assembly arranged in the lamp outer shell and a lens or a light-transmitting lampshade arranged at the front end of the lamp outer shell, the lamp outer shell is in a regular polygon shape, the outer edge side walls of the lamp outer shell are the same side wall faces, and the light source assembly is arranged in the lamp outer shell. At least one connecting clamping groove position is arranged on each side wall face, and at least one groove is formed in the groove bottom of each connecting clamping groove position. The quick splicing piece comprises a splicing piece body, the splicing piece body comprises a top face first inserting part, a middle part and a bottom face second inserting part, and the top face first inserting part and the bottom face second inserting part are each provided with at least one elastic telescopic piece. When the top face first inserting part or the bottom face second inserting part of the splicing piece body is inserted into the connecting clamping groove position, the elastic telescopic piece elastically abuts against the interior of the groove, and connection between the splicing piece body and the lamp shell is achieved. According to the scheme, quick splicing of the point light source lamp is achieved, operation is simple, connection is compact, and interval-free splicing is achieved.

The embodiment of the utility model discloses phototherapy equipment. The phototherapy equipment comprises an area light source module and a point light source module, the area light source module emits a first light beam. The point light source module emits a second light beam. At least part of the propagation path of the first light beam coincides with at least part of the propagation path of the second light beam, and the first light beam and the second light beam converge on the coincided propagation path of the first light beam and the second light beam to form a superposed and synthesized light beam. According to the phototherapy equipment, the light beams emitted by the surface light source module and the point light source module are combined and superposed for use, so that the uniformity of phototherapy irradiation of a target treatment area can be ensured, and the defect of low luminous efficiency of a near-infrared light band of the surface light source can be overcome; the irradiation light beams which are within the effective irradiation wave band range, the enough irradiation energy range and uniform irradiation are guaranteed, meanwhile, the device is attached to the target treatment area in a flexible mode, it is guaranteed that the superposed and synthesized light beams evenly and effectively irradiate the target treatment area, and the better treatment effect and rehabilitation effect are achieved.

The utility model provides an atmosphere projection lamp which comprises a shell, a light path channel is formed in the shell, and a light-emitting bottom plate used for emitting dynamic pattern light beams and a lens set are arranged in the light path channel. The light-emitting bottom plate comprises a base plate and a plurality of lamp beads arranged on the base plate, and the lamp beads are arranged in an array mode. The lens group comprises at least two Fresnel lenses, and the Fresnel lenses are arranged on a light emitting path of the light emitting bottom plate; light emitted by the light-emitting bottom plate sequentially passes through the Fresnel lenses to form soft pattern projection. According to the utility model, the surface light source and the point light source emitted by the lamp panel are subjected to scattering blurring and focusing of the gathered light beams so as to improve the lighting effect, so that the transition edge of the generated pattern is better in soft feeling, and the original shape of the dynamic pattern is kept while the light atmosphere feeling is improved.

The invention provides a corneal curvature measurement system and a corneal curvature measurement device, relates to the technical field of eye imaging and measurement, can reduce the debugging difficulty of a corneal curvature measurement light source, and does not limit the imaging view of other light paths in the same system or device. The corneal curvature measuring system comprises an eyepiece set, a light source module, a camera module and a diaphragm, the light source module, the camera module and the diaphragm are located on the inner side of the eyepiece set, the light source module comprises a point light source array, the point light source array emits light or forms an image on a focal plane on the inner side of the eyepiece set, and multiple collimated light beams are emitted through the eyepiece set and enter a measured eyeball. A plurality of collimated light beams fall on the circumference of the cornea on the same latitude, a cornea light spot virtual image is formed after the collimated light beams are reflected by the cornea, then a real image is formed on the detection surface of the camera through the eyepiece group and the camera module, and the cornea curvature is measured according to the position information of the cornea light spot in the real image.

The invention discloses an optical axis calibration method and device applied to a projection illumination light path, and belongs to the technical field of optics, and the device comprises a laser which is used for transmitting an initial collimated light beam; the forward beam expander is arranged on a light emitting path of the laser and is used for expanding the initial collimated light beam to form large-aperture collimated light; the beam splitter is arranged on an emergent light path of the forward beam expander and is used for splitting the large-aperture collimated light into a reflected light beam and a transmitted light beam; the reflecting mirror is arranged in a transmission light path of the beam splitter and is used for reflecting the transmission light beam back to the beam splitter; and the reverse beam expander is arranged in a reflection light path of the beam splitter and is used for converging the reflection light beams into a point light source. According to the invention, the abstract'optical axis alignment 'problem is converted into visual'light spot superposition' judgment, the principle breakthrough from traditional indirect energy measurement to direct spatial position comparison is realized, and the calibration precision is improved.

The invention relates to the technical field of automobile testing, and discloses a method and system for evaluating and testing visual field glare of a driver in a cabin, and the method comprises the following steps: starting from the position of the eyes of the driver, capturing a brightness distribution image of the whole visual field, and dividing the image into a plurality of sub light source regions around a glare source; dividing the visual field into a main sight area and a residual light sight area according to the attention distribution of the driver, and endowing sub light source areas falling into different areas with different weight values; calculating a unified glare index according to the weighted sum of the glare intensity of each sub light source area and the background brightness in the cabin; and finally, comparing the index with a preset threshold value, and outputting an evaluation result. According to the method, the large-area light source is divided into the sub-light sources, weighted calculation is carried out in combination with the attention of the driver, the problem that a traditional glare evaluation model is not suitable for a close-range non-point light source scene of the automobile cabin is solved, a scientific evaluation system matched with the automobile cabin is established, and the glare evaluation result is more accurate.

The invention discloses a mold size measuring device and method for vehicle lamp injection mold processing, and relates to the technical field of mold size measurement. The mold size measuring device and method for vehicle lamp injection mold machining comprises an image measuring instrument body used for measuring the size of a vehicle lamp groove formed in a mold body, an annular light source installed on the image measuring instrument body and used for illumination, a point light source and a displacement sensor. The image measuring instrument body is provided with an adjusting assembly used for changing the inclination angle of the mold body, and the adjusting assembly comprises a sliding column which is fixed to the top of the positioning rod to drive the inclination angle of the mold body to be changed, so that the light source irradiates the interior of the vehicle lamp groove from multiple directions. According to the invention, shadow areas generated by single-angle irradiation of the light source are reduced or eliminated, which is helpful for obtaining clearer and more complete images, thereby improving the accuracy of measurement results, and improving the measurement efficiency and precision.

The invention relates to the technical field of environment detection, in particular to a humanoid robot for classroom light environment detection, which comprises a hand detection component group and a head detection module, and the hand detection component group and the head detection module are respectively used for executing positioning point light parameter detection and space light environment detection. The hand detection component set comprises a first detection module and a limiting installation mechanism used for detachably fixing the first detection module. Through the integrated sensor module and the liftable human-shaped structure, synchronous acquisition of multiple parameters of a light environment and automatic reproduction of a standard measurement attitude are realized, and the modular quick-release mechanism improves the maintenance safety through an electric connection priority separation mechanism, so that single equipment can efficiently and normatively complete illumination detection tasks under various scenes.

The invention relates to a point laser module and intelligent mobile equipment. The point laser module comprises a point light source, a lens cone and a shaping lens group, the point light source and the shaping lens group are located in the lens cone and are arranged at intervals in the extending direction of the lens cone, the shaping lens group comprises a first lens and a second lens, and the first lens and the second lens are arranged at intervals in the extending direction of the lens cone. The curvature radiuses of the first lens and the second lens are designed to be capable of increasing the point brightness of the light spots shaped by the shaping lens group, laser generated by the point light source forms a virtual light source after passing through the first lens, and light emitted by the virtual light source is collimated after passing through the second lens. Through the shaping lens group, the spot brightness of the formed light spot can be increased, a long focal length and a short back focal length can be achieved, the long focal length is maintained, the light spot brightness is improved under the condition that the light spot area is not changed, the short back focal length is achieved, the light utilization rate is improved, and therefore the spot brightness of the light spot and the light utilization efficiency are both improved.

The invention relates to a lithium ion battery thermal runaway multi-dimensional signal coupling test device in the technical field of lithium ion battery thermal safety. The lithium ion battery thermal runaway multi-dimensional signal coupling test device comprises a closed test container, a signal acquisition system, an optical visualization system, a temperature control system, a gas acquisition system and an inflation system, the closed test container is a cube, four orthogonal through holes are formed in the front, rear, left and right outer walls of the closed test container, and optical glass is mounted on the left and right through holes; the signal acquisition system comprises an impact force sensor, a pressure sensor, a thermocouple, a battery test system, a data acquisition card and an analysis device; the optical visualization system comprises a camera, a point light source, a reflecting mirror, a concave mirror and a blade; the temperature control system comprises a heating rod, a heating sheet, a power supply and a controller; the gas collection system comprises an exhaust channel, a gas collection bag and a gas chromatograph; the inflation system comprises an inflation pipeline, a pressure regulating valve and an inert gas tank. According to the invention, the air injection state generated by the battery or the battery module in the thermal runaway process can be intuitively reflected.

The present invention relates to the technical field of laser welding. Disclosed are a method for establishing a point-ring laser welding heat source model, a system and a medium. A point-ring laser is composed of point light of a central laser body heat source and ring light of an annular laser surface heat source, the point light is used for achieving a weld seam having a high depth-to-width ratio for a welded material, and the ring light is used for achieving auxiliary heating and slow cooling for the welded material. According to the method for establishing a point-ring laser welding heat source model provided in the present invention, the laser power ratio of the point light to the ring light in the model can be regulated and controlled according to any proportion, the defocusing amounts of the point light and the ring light can be separately controlled, and spot parameters such as point light spot diameter and ring light spot diameter can be used for effectively expressing heat flux density distribution. The method for establishing a heat source model provides a powerful reference basis for accurately simulating a temperature field, a stress field and a deformation field of point-ring laser welding. On the basis of regulation and control of a welding path, the present invention can be widely applied to the field of finite element simulation of point-ring laser linear welding and weaving welding.

The invention discloses a light-emitting device and a reflective sighting telescope, the light-emitting device comprises a first substrate, a first light-emitting element, a second light-emitting element and a diaphragm, the first light-emitting element, the second light-emitting element and the first light-emitting element are arranged in a die bonding area of the first substrate, and the first light-emitting element and the second light-emitting element are connected to the first substrate in parallel; the second light-emitting element and the first light-emitting element are arranged along a first direction, and in the first direction, the spacing distance between one side, close to the second light-emitting element, of the first light-emitting element and the second light-emitting element is 1-50 microns; the diaphragm is arranged on the light-emitting sides of the first light-emitting element and the second light-emitting element, and the orthographic projection of a light through hole of the diaphragm on the first substrate is located at the adjacent center of the first light-emitting element and the second light-emitting element, so that light emitted by the first light-emitting element and the second light-emitting element can pass through. The light-emitting device can be used as a point light source with different brightness or different color adjustments for the reflective sighting telescope.

The invention provides a miniaturized laser processing system based on a metasurface laser processing head, which relates to the technical field of laser processing and comprises a light path modulation module, the metasurface laser processing head, a displacement device, a sample adjustment module and an image observation module, the metasurface laser processing head, the sample adjusting module and the image observation module are located on the same axis, and the light path modulation module modulates laser emitted by the laser light source into target polarized light and projects the target polarized light to the metasurface laser processing head; the metasurface laser processing head is fixedly connected with the displacement device and comprises one or more processing areas with functions of forming a point light field, a line light field, a surface light field, a body light field, a light field with a specific function expression and a space-time light field; the sample adjusting module enables the sample to be located in a modulation light field formed by the target polarized light, and laser processing is conducted on the sample. According to the invention, the integration level and functionality of the laser processing system can be improved.