332 results about "Point light" patented technology

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 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 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 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 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 provides a spliced detector flatness large-flux in-situ detection method which comprises the following steps: a light source emits a light beam which is compressed by a cylindrical lens, then is dispersed by a dispersion prism and respectively enters the edges of two adjacent detectors, and the two light beams are reflected by the surfaces of the detectors and then converge to generate dispersion stripes; a fixed difference calibration mode is adopted to calibrate stripe slope singularity caused by edge stripe variation in the dispersion stripe forming process; a band elimination filter is used for generating band elimination of a specific wave band in the dispersion fringes, and the channel spectrum is tested by analyzing the characteristics of the band elimination; the edge position of each detector is finely adjusted by using a dispersion prism, and the edge position of each detector is adjusted through deviation of a pupil position in combination with multi-point light emitted from one side of a wide-angle optical system by using an optical fiber interconnection system. According to the invention, the confocal and co-phase adjustment speed and precision of the spliced detector are greatly improved, and the regulation and control requirements of extremely high information flux and rapid convergence of a large-aperture system are met.

The invention provides a multi-focus point ring light spot generation system and a laser welding method, and belongs to the technical field of laser machining. The system comprises an annular light source, a first collimating lens, an annular light beam generation module and a first reflecting mirror which are sequentially arranged at intervals along a first linear direction, and a point light source, a second collimating lens, a first focusing mirror, a multi-curvature hollow reflecting mirror and a second focusing mirror which are sequentially arranged at intervals along a second linear direction, the center of the multi-curvature hollow reflecting mirror and the center of the second focusing mirror are provided with through holes for light beams emitted by the point light source to penetrate through, and the mirror surface curvature of the multi-curvature hollow reflecting mirror is adjustable. The technical problems of high processing cost and poor deep welding stability caused by structural limitation of a point ring laser in the prior art can be solved.

The invention belongs to the field of laser processing, and discloses a double-light-source point ring light spot generation system which comprises a first light source (1), a first collimating lens (2), a second light source (7), a second collimating lens (8), a first reflecting mirror (3), a second reflecting mirror (4) with a middle through hole, a ridge beam combiner (5) with a middle through hole and a focusing lens (6). The first reflecting mirror (3) is used for forming a non-closed symmetrical annular light beam; the second reflector (4) is used for reflecting and collimating the non-closed symmetric annular light beam; the ridge beam combiner (5) is used for combining beams and inputting the beams to the focusing lens (6); and laser emitted by the second light source (7) is collimated and then passes through middle through holes of the second reflecting mirror (4) and the ridge beam combiner (5) to the focusing lens (6). By improving the design of each component of the system and the matching working mode of the components, the central point light spot and the peripheral annular light spot can be output at the same time.

The invention relates to the technical field of data processing alignment, in particular to a long-distance photoelectric sensor focusing calibration method and system, and the method comprises the following steps: starting a laser transmitter with an end to monitor a photoelectric array, obtaining the light intensity and three-dimensional coordinates of multiple sampling points, and carrying out the filtering; and extracting edge and radial light intensity, calculating a gradient vector through derivative difference and generating an offset direction vector, extracting symmetrical sampling points based on the vector to construct a balance ratio sequence, generating an offset angle through a mean square error model, and mapping the angle and the vector to generate a calibration instruction. According to the method, multi-sampling-point light intensity is associated with three-dimensional coordinates, median filtering is executed to remove noise, gradient is extracted through derivative difference to achieve spatial offset direction mapping, an offset angle value is finely solved in combination with a balance ratio sequence and a mean square error model, and parameter stability is ensured; the offset vector and the angle are correlated to execute coordinate mapping operation to compensate the angle deviation, real-time automatic correction of the pose of the transmitting end is achieved, and the long-distance alignment efficiency and the signal intensity of the sensor are improved.

This disclosure provides a massage robot and its control method, control device, and storage medium. The massage robot control method of this disclosure includes: determining a massage path based on a user's human body point cloud data to obtain the user's massage path data, the massage path data including a massage movement trajectory and a first position, a first tolerance range, and a massage intensity range for each acupoint on the massage movement trajectory; controlling a robotic arm to perform multi-point light touches in a local area of ​​the first position of the acupoint and obtaining the pressure value of each light touch point; determining a second position of each acupoint on the massage movement trajectory based on the pressure value of each light touch point; and controlling the robotic arm to perform a massage operation according to the massage movement trajectory, the second position of each acupoint on the massage movement trajectory, the pre-set second tolerance range, and the massage intensity range. This disclosure can effectively improve the accuracy of acupoint positioning and the stability and safety of the massage effect.

Provided is an optical film requirement that does not use fine particles for light diffusion, is entirely composed of a transparent resin, and has a self-moire pattern that cannot be visually recognized by the naked eye, said optical film requirement having high front brightness without luminance unevenness on the light emission surface of a backlight when mounted on an edge-light backlight. A light-collecting auxiliary film inserted between the light emission surface of a light guide plate and the light incidence surface of a brightness enhancement film (BEF) in an edge-light backlight unit using discrete LED point light sources, the light-collecting auxiliary film being characterized by comprising: an optical waveguide layer comprising a light-transmitting base film, and a light-collecting layer comprising a light-transmitting base film, the light-collecting auxiliary film being interposed between the light emission surface of the light guide plate and the light incidence surface of the brightness enhancement film (BEF), the light-collecting auxiliary film being interposed between the light-emitting surface of the light guide plate and the light incidence surface of the brightness enhancement film (BEF); a light extraction layer that is formed on one surface of the optical waveguide layer and has a plurality of inverted rectangular pyramid-shaped unit recesses; and a light introduction layer formed on the other surface of the optical waveguide layer and having a plurality of unit triangular prisms extending in parallel in one direction, the light extraction layer constituting a light emission surface, and prism surfaces of the plurality of unit triangular prisms constituting the light introduction layer constituting a light incidence surface. The direction of the ridge lines of the plurality of unit recesses and the direction of the ridge lines of the plurality of unit triangular prisms intersect at an angle of 42 DEG to 48 DEG, and the light extraction layer, the optical waveguide layer, and the light introduction layer do not contain fine particles for light diffusion. The self-moire pattern generated by the plurality of unit recesses and the plurality of unit triangular prism lenses cannot be visually recognized by naked eyes.

This invention provides a dust concentration detection device and measurement method for underground drilling in coal mines. It includes a hemispherical glass body with an open top, containing a cleaning unit. The cleaning unit includes a vertically arranged annular cleaning frame, the center of which is collinear with the axial centerline of the glass body. A motor support frame is coaxially mounted on the top of the glass body, forming a spherical body with a hollow top. The bottom of the motor support frame is connected to the glass body, and its vertical top is connected to a coaxially mounted sleeve. An explosion-proof motor is also coaxially mounted inside the sleeve, with its output shaft connected to the top of the cleaning frame. The output shaft drives the cleaning frame to rotate around the central axis of the glass body. A point light source is also coaxially mounted on the inner top of the cleaning frame. A shadow sensor is also installed on the outer bottom wall of the glass body. The device of this invention has a fast response speed and can quickly capture instantaneous shadow changes, thereby achieving real-time continuous measurement.

The utility model discloses a high-depth anti-dazzle track lamp based on a point light source, and relates to the technical field of track lamps, the high-depth anti-dazzle track lamp comprises a track strip and a cylindrical lamp, a connecting seat is slidably installed at the track strip, the connecting seat and the track strip are attracted and fixed through built-in magnets of the connecting seat and the track strip, and the cylindrical lamp is arranged below the connecting seat; the angle adjusting mechanism comprises a mounting base, a driving motor and a rotating base, the top of the mounting base is fixedly connected with the bottom of the connecting base, the driving motor is fixedly mounted on one side of the mounting base, the output end of the driving motor movably penetrates through the mounting base, and one side of the rotating base is connected with the output end of the driving motor; the top of the cylindrical lamp is fixedly connected with the bottom of the rotating base. According to the track lamp, when the irradiation angle of the track lamp is adjusted, manual climbing is not needed for manual adjustment, time and labor are saved, efficiency is high, meanwhile, potential safety hazards are greatly reduced, and practicability is high.

An electronic paper display includes a surface cover plate, a lighting module, a first optical adhesive layer, an electronic paper display module and a second optical adhesive layer. A peripheral area of a bottom surface thereof is provided with a black bezel formed by an opaque or low-light-transmittance material. The bottom surface is disposed with a low-refractive-index transparent resin layer. The lighting module has a light guide plate and multiple point light sources. The point light sources are disposed outside an outer edge of the light guide plate. The lighting module is disposed under the surface cover plate. The first optical adhesive layer glues the surface cover plate and the lighting module. The electronic paper display module is disposed under the lighting module. The second optical adhesive layer glues the lighting module and the light guide plate of the lighting module.

This invention discloses a vehicle-mounted backlight that eliminates white clumps, relating to the field of vehicle-mounted display devices. It includes a light guide plate, an LED light source disposed on one side of the light guide plate, and an optical film assembly disposed on the light-emitting surface of the light guide plate. The light guide plate has an incident light surface and an emitting light surface. Its back side has a dot array for converting point light sources into surface light sources. The dot array includes several light-guiding dots arranged in a non-uniform pattern, forming at least one directional channel on the back side of the light guide plate for directing airflow during adsorption, thereby reducing air stagnation in the edge areas. The LED light source is arranged in an array, with its density and position matching the high-density areas in the non-uniform dot layout of the light guide plate. The LED light source is used to inject light into the light guide plate. This vehicle-mounted backlight, through its non-uniform dot layout and airflow channel, combined with a light source matching design, eliminates adsorption white clumps at the source, improving display quality and reliability in vehicle environments.

The application discloses a kind of multi-light point anti-interference deformation measuring devices and methods based on stroboscopic spectroscopy, it is related to precision measurement technical field, including point light source, the lower portion of the point light source is provided with cylindrical mirror one, the lower portion of the cylindrical mirror one is provided with linear array sensor one, the linear array sensor one is electrically connected with data acquisition device, the light emitted by the point light source is focused into a line segment after passing through cylindrical mirror one and is imaged on linear array sensor one, the linear array sensor one converts the light signal of focused line segment and outputs digital signal to data acquisition device, in the application, the multi-light point anti-interference deformation measuring device is by applying cylindrical mirror, linear array sensor and point light source, establishes a kind of multi-dimensional displacement sensor measurement system, can realize high-precision, high-resolution and high sampling rate displacement measurement system, the related components are less, the appearance is small and exquisite, maintenance is simple, while cost is lower, system stability is high, more suitable for being used in engineering structure outdoor multi-point monitoring.

Light-emitting diode (100, 200) with several quantum dots (10), having the light-emitting diode (100, 200): a first electrode (110, 210) and a second electrode (120, 220); an emitting material layer (150, 250); an electron transfer layer (164, 244); and a hole transfer layer (144, 264), wherein the emitting material layer (150, 250) is arranged between the electron transfer layer (164, 244) and the hole transfer layer (144, 264) and the emitting material layer (150, 250) has the quantum dots (10), where the quantum dots exhibit (10): a semiconductor nanocrystal or metal oxide core (20); a shell (30) covering the semiconductor nanocrystal or metal oxide core (20), wherein the shell (30) has an outer surface; an X-type ligand (42) having a functional group selected from the group consisting of a carboxylate group, a phosphate group and a thiolate group, which is bonded to a first region of the outer surface; and an L-type ligand (44) having a functional group selected from the group consisting of an amino group, a thiol group, a phosphine group and a phosphine oxide group, which is bonded to a second region of the outer surface, wherein the X-type ligand (42) is bound to the first region of the outer surface by a negatively charged functional group, and the L-type ligand (44) is bound to the second region of the outer surface by an undivided electron pair, wherein a multitude of the first regions of the outer surfaces of the quantum dots (10) are proximal to the hole transfer layer (144, 264) and distal to the electron transfer layer (164, 244), wherein a multitude of the second regions of the outer surfaces of the quantum dots (10) are proximal to the electron transfer layer (164, 244) and distal to the hole transfer layer (144, 264), and where the outer surface is spherical and the first area is a first hemisphere and the second area is a second hemisphere.

The invention relates to a photocuring continuous carbon fiber composite material formula and a 3D printing head device, and the photocuring continuous carbon fiber composite material formula comprises the following components in parts by weight: 50-90 parts of carbon fiber and epoxy resin, 1-5 parts of a photoinitiator, 0-3 parts of a photosensitizer, 5-20 parts of an alicyclic epoxy compound, and 5-20 parts of an oxygen heterocyclic compound. 0-5 parts by weight of a thixotropic agent and 0-20 parts by weight of an active diluent. The 3D printing head comprises a resin injection part, a fiber feeding part, an in-situ impregnation tank, a point light source bracket part, an anti-overflow part and a preimpregnated continuous carbon fiber discharging part; according to the photocuring continuous carbon fiber composite material formula and the 3D printing head device, protonic acid and gelation can be rapidly initiated on the surface through illumination, protonic acid is diffused into fibers by means of the heat effect to achieve deep curing, and therefore 3D printing of the photocuring continuous carbon fiber reinforced epoxy resin composite material is achieved.

The utility model belongs to the technical field of illumination, and discloses a lamp with a buckle point light source, which comprises a lamp body, the outer surface of the lamp body is connected with a lamp shell in a clamping manner, one end face of the lamp body is positioned in the lamp shell and is fixedly connected with a lamp panel, and one end of the surface of the lamp panel far away from the lamp body is fixedly connected with a light source. The number of the light sources is four, a mirror shell is connected to the end, opposite to the lamp body, of the interior of the lamp shell in a clamped mode, a lens is fixedly connected to the end, away from the lamp body, of the surface of the mirror shell, and a spring buckle is connected to the end, close to the lamp body, of the outer surface of the lamp shell in a clamped mode. The installation process between the point light source lamp and the ceiling is set to be in a buckling mode, so that the point light source lamp is simpler and more convenient to install, the installation process of the point light source lamp is simple and rapid, installation or disassembly can be completed without tools, and therefore the replacement efficiency of the point light source lamp is greatly improved.

The utility model discloses an ETX-D type LED railway signal bulb with an LED as a light source. The ETX-D type LED railway signal bulb with the LED as the light source comprises a shell, an LED point light source chip aluminum substrate, a circuit board, a resistance module board and a wire inlet bolt terminal, the LED point light source chip aluminum substrate, the resistor module board and the wire inlet bolt terminal are all electrically connected with the circuit board. The LED point light source chip aluminum substrate comprises an aluminum substrate and high-power LED chips which are arranged on the aluminum substrate and serve as a main light source and an auxiliary light source. A voltage input circuit, a rectification filter circuit, a voltage stabilization constant current circuit, a control circuit, a current detection circuit and a current compensation circuit which are electrically connected in sequence are integrated on the circuit board, and the LED point light source chip is electrically connected with the control circuit; and the resistor module board adopts a resistor compensation module and is electrically connected with the current compensation circuit. By adopting the arrangement, the current of the LED bulb can reach the current when an incandescent bulb works, and the LED bulb can adapt to an original lighting unit without changing an original lighting system circuit.

The light emitting module comprises a light source assembly, a light uniformizing piece and a thick-wall piece which are sequentially arranged in the first direction, the light source assembly is provided with a plurality of circles of coaxially-arranged point light sources, the light emitting side of the thick-wall piece is provided with a plurality of circles of protruding parts in one-to-one correspondence with the point light sources, and the protruding parts are arranged on the light emitting side of the thick-wall piece. The first direction is parallel to the front-back direction of the vehicle body, or an included angle is formed between the first direction and the front-back direction of the vehicle body; the end face, facing the light source assembly, of the thick-wall piece serves as a first reference face, and the protruding heights of the protruding parts in the first direction relative to the first reference face are sequentially reduced from the outer ring to the inner ring. And the light-emitting surfaces of the convex parts are smooth surfaces. According to the light emitting module, the light emitting texture can be guaranteed, the three-dimensional and deep light emitting effect can be achieved after the light source assembly is lightened, the appearance and the lightening effect of the light emitting module are different from those of a traditional lamp, the refreshing visual effect can be achieved, and the prompting effect of the light emitting module is improved.

A contact lens (201) includes an optic zone (202) that is centred on an optical axis (219), and a peripheral zone (204) surrounds the optic zone (202). A cross-sectional slice through the optic zone (202) along a meridian comprises a series of successive arcs (203a-203h) having a radial curvature power profile. The radial curvature power profile increases monotonically with radial distance from the optical axis (219). Light rays from a distant point source passing through the midpoint of each arc converge toward a point (215) on the first optical axis (203a-203h). For each arc (203a-203h), light rays from a distant point source pass through that arc (203a-203h) and converge towards a point (216) that is spaced away from the optical axis by a first distance. Methods of designing and manufacturing such contact lenses (201) are also described.

The utility model relates to a globe, in particular to a globe convenient for efficiently demonstrating and observing revolution and rotation effects, which comprises a support main body, an earth body, a light barrier, an illumination light source and a point light source, the support main body is connected with a first support through a first clamping shaft, and the support main body is connected with a second support through a second clamping shaft; clamping holes allowing the first clamping shaft and the second clamping shaft to penetrate through are formed in the two ends of the earth body respectively, the light barrier is arranged in the earth body and rotationally arranged between the first support and the second support, the illumination light source is arranged on the light barrier, the light barrier is provided with an electric connector A, and the electric connector A is electrically connected with the illumination light source and the point light source. The first support is provided with an electric connector B which is electrically connected with the power source and rotationally matched with the electric connector A. The point light source is arranged in the middle of the light barrier, the lighting source and the point light source are arranged on the same side, the point light source is arranged on the light barrier, the structure is more compact, and the sight of an observer cannot be shielded.

The invention provides a point-surface additive manufacturing system and method based on dual-optical-path polarization multiplexing, and relates to the technical field of additive manufacturing, and the method comprises the steps: importing a three-dimensional model of a part, generating hierarchical data by adopting a self-adaptive hierarchical algorithm, dividing each layer of data into a contour region and a filling region, and setting corresponding parameters; the coaxiality of the patterned light spot and the point light spot is calibrated, the energy density mapping relation in different polarization states is calibrated, and the optimal energy parameter is verified and stored based on the material type; loading a filling pattern, scanning according to a planned path, monitoring the temperature of a molten pool in real time, dynamically adjusting power, switching a polarization state mode to generate a spot light spot, and scanning according to the planned path to obtain a formed part; a point light spot light path and a patterned light spot light path are integrated in the additive manufacturing system at the same time, and the printing efficiency and the printing precision of laser additive manufacturing parts are synchronously improved through efficient switching of point light spot contour scanning and patterned light spot filling scanning.

The utility model relates to the technical field of light-emitting diode (LED) lamp cups, and discloses an LED lamp cup with a high diffuse reflection nanometer coating, which comprises a lamp cup outer cover, the high diffuse reflection nanometer coating is arranged on the inner surface of the lamp cup outer cover, heat dissipation holes are arranged on the lamp cup outer cover at equal intervals in a surrounding mode, an installation ring is arranged on the outer wall of the lamp cup outer cover in a sliding mode, and the high diffuse reflection nanometer coating is arranged on the installation ring. A filter screen of an annular structure is mounted in the middle of the mounting ring and located on one side of the heat dissipation holes, and a transparent cover plate is arranged at the end of the lamp cup outer cover. According to the LED lamp, due to the arrangement of the high diffuse reflection nanometer coating, a diffuse reflection coating is formed on the reflective surface of the luminous body when the LED lamp body works, a point light source is changed into an area light source, light is homogenized, heat flow is homogenized, the effect of improving the lighting effect is achieved, and due to the arrangement of the heat dissipation holes, a good heat dissipation effect can be achieved when the LED lamp body works, and the service life of the LED lamp body is prolonged. And the influence on the working state of the LED lamp body caused by over-high temperature of the inner side of the lamp cup outer cover is avoided, and the LED lamp cup is practical and suitable for wide popularization and use.

The invention discloses a low-coherence interference microstructure rapid measurement method based on an FPGA, and the method comprises the steps: enabling the FPGA to respectively receive image data and single-point light intensity data collected by a CMOS sensor and a photoelectric detector, and transmitting the two types of data to an FPGA chip internal memory; a parallel pipeline architecture of the FPGA is designed, so that interference pattern contrast can be calculated in real time and displacement point-by-point calculation can be completed while a series of image data and photoelectric detector interference analog signals are received, and the processing efficiency is remarkably improved; and calculating the position of an interference envelope peak value by adopting a gravity center method, completing three-dimensional shape detection of the microstructure, and realizing three-dimensional shape reconstruction. According to the method, the processing speed of low-coherence interference measurement can be effectively increased, the microstructure morphology can be restored at a high speed, and online detection application of low-coherence interference in the fields of semiconductor packaging, lithium battery manufacturing, ultra-precision machining and the like is facilitated.

The present application relates to the technical field of coal-containing wastewater treatment, and particularly relates to a coal-containing wastewater ion flocculation treatment device, which comprises a segmented sub-electrode assembly, a signal acquisition assembly, a feature extraction module, a flocculation regulation module, an intervention control module and a dynamic optimization module, the feature extraction module determines electrolysis abnormality features and flocculation rate features based on current signals and double-point light intensity signals; the flocculation regulation module determines a pose adjustment strategy based on the electrolysis abnormality features, adjusts the angle and immersion depth of the electrode plate through an electrode plate driving mechanism; the intervention control module executes polarity reversal, mechanical cleaning or current adjustment based on the response features after the pose adjustment; and the dynamic optimization module performs angle optimization and depth optimization on the electrode plate pose after the cleaning intervention. The present application solves the problems that the existing device cannot distinguish abnormal sources and the intervention means is single, and improves the accuracy and long-term operation stability of coal-containing wastewater flocculation treatment.