479 results about "Dark room" patented technology

The invention discloses an electronic communication cable detection device in the technical field of cable detection, and the device comprises a workbench, an insulation tester and a dielectric loss tester, the workbench is provided with a darkroom, the axial side wall of the darkroom is symmetrically provided with ports, the ports are internally and fixedly connected with window shades, and the interior of the darkroom is fixedly connected with a defect detection assembly. A roller assembly is fixedly connected to the outer side wall of the darkroom, multi-stage clamping assemblies located on the two sides of the darkroom are symmetrically and fixedly connected to the top of the workbench, a controller is fixedly connected to the workbench, and the flaw detection assembly, the roller assembly, the multi-stage clamping assemblies, the insulation tester and the dielectric loss tester are all in signal connection with the controller. According to the invention, through multi-stage screw-in self-adaption to cables with different diameter specifications, the clamping stability is ensured, and the pressure sensor cooperates with the electrical performance detection instrument and the camera to integrate various detections, so that the detection cost is reduced, the detection accuracy is improved, and the cable to be detected is prevented from being damaged in the detection process.

The invention discloses a satellite loop simulation test system and method, electronic equipment and a program product. The satellite loop simulation test system comprises a darkroom system used for simulating an electromagnetic propagation environment between a satellite and a terminal; the turntable system is deployed in the darkroom system and is used for controlling the terminal to move in the darkroom system according to the input terminal movement track; the communication system is used for sending a downlink test signal to the terminal and receiving an uplink test signal fed back by the terminal according to the input channel simulation file, and the uplink test signal and the downlink test signal are used for determining a test result of the satellite loop simulation test; and the timing system is used for generating a unified time reference for the turntable system and the communication system, and the turntable system and the communication system operate based on the time reference. The technical problem of how to construct a darkroom test environment in a low-orbit broadband satellite high-speed motion scene so as to verify the end-to-end communication performance of a terminal under a real-time tracking satellite is solved.

The invention discloses a multi-mode perovskite and laminated cell comprehensive test system and method. The system comprises a darkroom, a test platform, an LED light source module, a CCD camera, a laser, an adjustable constant current source, an electronic load and an upper computer. The darkroom is used for shielding external ambient light and providing a dark test environment; the test platform is installed in the darkroom, and a to-be-tested battery is placed on the test platform; the LED light source module is used for providing a test light source; the CCD camera is used for capturing an optical signal generated by the battery to be tested in the testing process; the laser is used for emitting a laser beam to excite the to-be-detected battery to generate a specific optical response; the adjustable constant current source and the electronic load module can be electrically connected with a to-be-tested battery on the test platform, the adjustable constant current source is used for supplying current to the to-be-tested battery, and the electronic load module is used for simulating different load conditions; and the upper computer is used for realizing intelligent control of the test process and processing and display of test data.

The utility model provides a quick detection device for quick type biological indicators, which comprises a shell, a darkroom and a control system, the darkroom and the control system are arranged in the shell, a camera component and a culture room corresponding to the camera component are arranged in the darkroom, a plurality of detection holes for placing the biological indicators are arranged in the culture room, and the detection holes are communicated with the control system. An ultraviolet light source is arranged in the detection hole, a mounting hole corresponding to the detection hole is formed in the cover plate above the darkroom, and an opening is formed in the position, corresponding to the mounting hole, of the shell. According to the utility model, the super-definition starlight CCD camera is adopted to detect fluorescence generated in the biological indicator, the detection speed is high, the accuracy is high, and real-time monitoring and alarming can be realized.

The invention relates to the field of automobile electronic testing technology and equipment, and discloses a vehicle-mounted camera imaging quality testing method and device suitable for a rain and fog scene, and the method comprises the steps: installing a to-be-tested camera module in a rain and fog environment cabin, setting the spectrum and illumination of a top natural illumination simulation system, and simulating the illumination at different time periods; selecting a test target plate in the darkroom; starting an automatic centering module to align the optical axis with the standard plate reference; rain and fog parameters are set through the environment control host, the rain and fog supply system is started to simulate different levels of rain and fog environments, and the raindrop particle size, concentration, dripping speed, fog visibility and fogdrop particle size are dynamically regulated and controlled; shooting a target plate graph card, extracting characteristic parameters by an image analysis module, performing quantitative analysis, and generating an evaluation report, so as to solve the technical problem of singleness of rain and fog scene environment simulation in the prior art.

The utility model relates to a control device for a microwave anechoic chamber test system. Comprising a shielding box which is a sealed cavity provided with a cover plate, and the shielding box is provided with a power supply socket, a data socket and an optical fiber coupler; a control circuit board, an AC-DC power supply module, a data optical fiber transceiver and other modules are installed in the shielding box. A plurality of motor control units, a power supply interface and a communication interface are integrated on the control circuit board, and a first output end of the AC-DC power supply module is connected with the control board and is used for supplying power to the control board; one end of the data optical fiber transceiver is electrically connected with the optical fiber coupler, and the other end is electrically connected with the communication interface for converting the signal into an optical signal and outputting the optical signal. The control circuit board is placed in the shielding box, so that the size of the rotary table or antenna tower equipment is reduced, and the electromagnetic interference risk of a motor and a darkroom environment is reduced; the control circuit board integrates the servo motor control unit and the stepping motor control unit for modular design, serves as an independent unit of the darkroom test system, and is high in universality.

The invention belongs to the technical field of radar wave-absorbing material testing, and provides a high and low temperature controllable radar wave-absorbing material reflectivity testing device and method, and the device comprises a microwave darkroom, a detection mechanism and a tested object placement mechanism which are arranged in the microwave darkroom, and a temperature control mechanism; the detection mechanism comprises a first bracket arranged in the microwave darkroom, and a transmitting antenna and a receiving antenna which are arranged on the first bracket; the tested object placing mechanism comprises a second bracket arranged in the microwave darkroom and a cover body arranged on the second bracket and used for placing a tested object; the temperature control mechanism comprises a temperature control box, and an air inlet pipe and an air return pipe which are connected with the temperature control box; the ends, away from the temperature control box, of the air inlet pipe and the air return pipe are communicated with the interior of the cover body, the air quantity and the air speed entering the cover body are controlled through the temperature control box, the temperature and the humidity in the cover body meet preset requirements, the real environment can be simulated, and the heating uniformity of a tested material can be guaranteed through the arrangement of the cover body.

A comprehensive detection device for a radar seeker relates to the technical field of measurement and control, a target angular displacement forming device (1) is arranged on the right side of the ground of a microwave anechoic chamber (3), the target angular displacement forming device is connected with a PXI system in a measurement and control cabinet (5) located on the outer side of the microwave anechoic chamber through a serial port bus, and a window is arranged on the wall of the left side of the microwave anechoic chamber. A mounting clamp (16) on the sliding clamping table (4) clamps the radar seeker to be tested and drives the radar seeker to be tested to enter the microwave darkroom from the window, and the radar seeker to be tested is connected with a high-frequency unit and a signal switching unit in the measurement and control cabinet through cables to test a receiving loop; the device has the advantages that the size is small, the assembly is convenient and fast, the shielding darkroom can be used for accurate measurement in an inner field, the device can be portable and used in an outer field, and the depth of the single-pulse Doppler radar seeker can be detected.

The invention provides a low-scattering carrier for darkroom background level evaluation test, and relates to the technical field of target far-field electromagnetic scattering characteristic test, the low-scattering carrier is a hollow structure formed by seamless connection of an upper surface and a lower surface; the upper surface comprises a plurality of smooth curved surfaces with continuous curvatures, and the lower surface is a smooth plane; the forward direction of the low-scattering carrier is a sharp needle-shaped tip; and the lower surface is provided with a circular truncated cone hole for embedding a two-dimensional rotating top at the top end of the metal bracket and a connecting structure for connecting and fixing the two-dimensional rotating top. The forward direction of the low-scattering carrier provided by the invention is a sharp needle-shaped tip, so that the low-scattering carrier can be ensured to have a low-scattering characteristic in a relatively wide angular domain range in the forward direction, strong RCS scattering of the two-dimensional rotating top can be shielded, the RCS of the metal bracket can be measured more accurately, and a more accurate darkroom background level can be further obtained.

The embodiment of the invention discloses a calibration test device for a semi-physical simulation darkroom array antenna and a feed system. The calibration test device is used for carrying out calibration test on the array antenna and the feed system. In one specific embodiment, the calibration test device comprises a calibration computer, a vector network analyzer, a calibration case, a three-axis turntable, a tuner, a signal source and a simulation darkroom. According to the method, the problem of calibration work of the array antenna and the feed system of the semi-physical simulation radio frequency darkroom under the low-frequency condition is solved, design experience is provided for construction of the low-frequency simulation darkroom, and preconditions are provided for semi-physical simulation test application requirements developed in a laboratory.

The invention belongs to the technical field of optical imaging and automatic detection, and particularly relates to a multispectral polarization imaging automatic scanning system. According to the system, through combination of multispectral polarization imaging and an AI algorithm, rapid positioning and classification of a target are realized, and the precision and efficiency of trace detection and material evidence identification are improved on the premise that a sample is not damaged. The multispectral polarization imaging automatic scanning system comprises a single-axis detachable slide rail, a polarization camera, a multispectral light source module, a small darkroom with an open bottom, a control panel and a main control computer. The two ends of the single-axis detachable sliding rail are supported by the adjustable tripod, the portable small darkroom is fixed below the movable end of the sliding rail through mechanical connection, the polarization camera and the multispectral light source are installed in the darkroom, and the darkroom is driven by the stepping motor to conduct single-axis scanning motion. The multispectral light source module supports switching of more than six wave bands within the wave band of 450-950 nm, wave band switching can be completed within 5 ms, and stable illumination intensity (0-500 lux) is provided. The process provided by the invention comprises the steps of equipment deployment, scanning path configuration, light source regulation and control, image acquisition, data analysis and the like, and a high-precision detection report can be quickly generated in various scenes. Through cooperative work of the control panel and the main control computer, the system realizes automatic image acquisition, target detection and report generation, is widely applied to the fields of trace detection, material evidence identification, industrial quality inspection and the like, and has the characteristics of automation, high efficiency and high precision.

The embodiment of the invention discloses a glare collaborative test method and device for a self-adaptive high beam and electronic equipment. The method comprises the steps of firstly obtaining test data of a target vehicle in a site test, performing a darkroom light test on the target vehicle based on bus data in the test data to obtain light shape data corresponding to each target moment, and then determining a target illumination range corresponding to each light shape data according to inertial navigation data in the test data, and finally, determining a glare test result of the self-adaptive high beam according to a comparison result of the target illumination range and the theoretical glare affected range which are paired in pairs. Test data obtained in a field test are recharged into a darkroom light test scene through data, and a glare collaborative test of the adaptive high beam is performed, so that a real road driving condition environment can be simulated, a target illumination range of each target moment can be accurately and efficiently determined in the darkroom test environment, and the test efficiency is improved. And the accuracy and the efficiency of the adaptive high beam glare test are improved.

The invention relates to the field of electromagnetic field technology and radio frequency signal testing, in particular to a radio frequency standard field generation system and method based on near-field beam forming, and the system comprises a control unit, a radio frequency signal generation unit, a radio frequency field control unit and a broadband radiation antenna array. The control unit carries a near-field electromagnetic wave synthesis mathematical model and is used for receiving a target field type setting requirement and calculating excitation amplitude and injection compensation phase required by each radiation unit configured in the broadband radiation antenna array; the radio frequency signal generation unit comprises a pulse modulation laser source and a plurality of semiconductor radiation units and is used for generating high-power programmable radio frequency signals; the radio frequency field control unit comprises an optical delay line and an FPGA matrix and is used for performing amplitude and phase regulation and control on the high-power programmable radio frequency signal output by the radio frequency signal generation unit; and the broadband radiation antenna array is used for receiving the regulated radio frequency signal and radiating the regulated radio frequency signal to the near-field space of the darkroom, and a target field pattern is formed through multi-unit electric field vector superposition.

The invention relates to the field of satellite navigation, and discloses a satellite receiving terminal-oriented babysbreath microwave anechoic chamber and outdoor environment collaborative test system and method, and the system comprises a babysbreath microwave anechoic chamber, an unmanned plane platform, and a standard satellite positioning terminal disposed in the babysbreath microwave anechoic chamber. The tested satellite receiving terminal and the carrier are arranged in an outdoor environment, the upper computer is arranged outside the babysbreath microwave darkroom, and the satellite navigation signal simulation source and the GNSS time service module are arranged in the babysbreath microwave darkroom and on the unmanned aerial vehicle platform. According to a parameter instruction issued by the upper computer, the satellite navigation signal simulation sources of the babysbreath microwave anechoic chamber and the unmanned aerial vehicle platform generate satellite navigation signals used for testing a satellite receiving terminal, and the satellite navigation signals are broadcasted through respective navigation antennas. According to the invention, an indoor and outdoor collaborative test environment is effectively constructed, the test requirements of large equipment under the condition of no large darkroom are met, and the comprehensiveness and scientific rationality of test results are ensured.

The present application belongs to the application field of nondestructive testing technology for ceramic parts, and particularly relates to a nondestructive testing method for cracks and chipping of ceramic nozzles, comprising: cleaning grease, paint, and coating on the surface of the ceramic parts, and drying; completely immersing the ceramic parts in fluorescent penetrant liquid for a certain time; taking the ceramic parts out of the fluorescent penetrant liquid and dripping them for a certain time; removing the fluorescent penetrant liquid on the surface of the ceramic parts by a water spray method, and drying; placing the ceramic parts in a dark room and irradiating them with a black light lamp, and observing the surface of the ceramic parts under irradiation; when there are luminous lines on the surface of the ceramic parts, the ceramic parts have cracks, and when there are block-shaped spots on the surface of the ceramic parts, the ceramic parts have chipping. The crack detection of ceramic products in the present application adopts a low-sensitivity fluorescent penetrant detection method, which effectively solves the problem of identifying defective products such as chipping and cracks in ceramic products, and at the same time provides a reference basis for quality control of other types of ceramic products.

The invention discloses a spectral data correction method, a substance analysis device and a digital twin system of the substance analysis device, and belongs to the technical field of lunar surface exploration. The device integrates multiple functions of element acquisition, spectral analysis, temperature compensation, weight measurement, high-definition image acquisition, three-dimensional shape reconstruction and the like, and by designing a special darkroom structure and a temperature control module, the influence of the extreme temperature of the lunar surface and stray light on the measurement precision is effectively avoided. The device adopts a Raman spectrum sensor and an infrared spectrum sensor to realize substance component detection, and corrects measurement errors caused by temperature fluctuation in real time through multispectral data preprocessing and a nonlinear temperature compensation model. Meanwhile, the multi-view image acquisition and high-density morphology reconstruction technology ensures the accurate restoration of the surface morphology and color information of the sample; the digital twin subsystem realizes remote monitoring and dynamic optimization through real-time data synchronization and virtual simulation, and improves the detection efficiency and decision precision.

The invention discloses an LED dead pixel detection method, device and equipment based on laser reflection and a medium, and relates to the technical field of LED lamp detection, and the method comprises the steps: controlling a laser light source to irradiate a to-be-detected LED lamp; collecting a reflected light signal; preprocessing the reflected light signal to obtain an input signal; and judging whether the LED lamp is normal based on the input signal. According to the invention, laser reflection detection is adopted to replace traditional optical imaging, the monochromaticity and directivity of laser are utilized to overcome ambient light interference, and a darkroom or complex filtering is not needed. Meanwhile, the combination of the laser light source and the photoelectric sensor significantly reduces the cost of the system, and avoids the use of a high-resolution camera. The laser can focus a micron-sized light spot, and the sub-pixel-level micro structure abnormity can be identified with high precision by analyzing the energy change of a reflected light signal. More importantly, according to the method, non-luminous defects such as packaging cracks and colloid stripping can be synchronously detected by capturing the reflection characteristics of the physical structure of the LED instead of depending on the luminous state of the LED, so that the defect detection accuracy is effectively improved.

The embodiment of the invention discloses an air interface testing device and an air interface testing method, and belongs to the technical field of communication. The air interface testing device comprises a testing module which comprises a microwave darkroom and is used for providing a testing environment for equipment to be tested; the integrated heat preservation rotary table module is arranged in the microwave darkroom and comprises an adjustable cover body structure, and the cover body structure is used for maintaining the environment state of the equipment to be tested; and the environment control module is arranged outside the microwave darkroom, is connected with the integrated heat preservation turntable module through a heat preservation pipeline to form a three-axis structure, and is used for cooperating with the integrated heat preservation turntable module to adjust the test environment of the to-be-tested equipment. According to the embodiment of the invention, the environment control module and the integrated thermal insulation turntable module are designed in an integrated manner, so that on the premise of ensuring the functions of each module, the test freedom degree is improved, the test scene is expanded, and the air interface test of the to-be-tested equipment under the multi-environment condition can be realized.

The invention discloses an isolator for establishing a bone nonunion animal model and a preparation method of the isolator, and relates to the technical field of medical instruments, and the preparation method comprises the following steps: step 1, obtaining a hydrogen-containing silicone oil prepolymer with a side chain containing Si-H bonds; 2, obtaining a silica gel macromonomer with an epoxy group on a side chain; step 3, obtaining an anti-inflammatory functionalized silica gel macromonomer; 4, reconstructing the skeleton model in a three-dimensional manner, and creating a defect isolator model; 5, adding the anti-inflammatory functionalized silica gel macromonomer obtained in the step 3 and a reactive diluent into a mixing tank, adding a cross-linking agent and polyether modified polydimethylsiloxane under mechanical stirring, stirring for 30 minutes, defoaming for 2 hours under 500Pa vacuum, and standing and curing in a darkroom after defoaming; and 6, a multi-material-box DLP photocuring 3D printer is adopted for isolator printing. According to the method, observation interference on the bone nonunion pathological process is fundamentally reduced, and high-fidelity modeling construction is achieved.

The invention provides a photoelectric solar irradiance meter self-calibration device for outdoor monitoring and a calibration method, and belongs to the technical field of photovoltaic monitoring. The device comprises a sky imager, a solar irradiance meter for monitoring, a standard solar irradiance meter, a sealed darkroom, a three-dimensional adjusting bracket and a waterproof sealed box, wherein a dual-channel temperature collector, a dual-channel voltage collector and a control, data processing and storage module are integrated in the waterproof sealed box. The sealed darkroom normally protects the standard irradiance meter to prevent the standard irradiance meter from aging and dust deposition; the dual-channel collector synchronously collects temperature and voltage of a standard solar irradiance meter for monitoring, and supports a calibration algorithm to realize dynamic updating of sensitivity; the three-dimensional adjusting bracket ensures that the device is parallel to the mounting plane of the photovoltaic module, and the angle response matching degree is improved; the sky imager judges the calibration weather condition to guarantee the effectiveness of the calibration environment; the control module realizes automation of a self-calibration process, adapts to an outdoor long-term monitoring scene, and realizes continuous and accurate measurement of photovoltaic solar irradiance.

The utility model relates to a limiting device used for adjusting the angle of a shielding door of a darkroom shielding room, and belongs to the technical field of shielding door angle limiting. The limiting device comprises a guide rod, a limiting block, a door leaf fixing piece, a door frame fixing piece and a pin shaft, the door leaf fixing piece is installed at the top of a door leaf, and the door frame fixing piece is installed on a door frame; one end of the guide rod is rotationally connected to the door frame fixing piece through a pin shaft, a penetrating groove is vertically formed in the middle of the guide rod in the length direction in a penetrating mode, the door leaf fixing piece is movably arranged in the penetrating groove, the limiting block is adjustably fixed in the guide rod, the door leaf fixing piece is arranged between the limiting block and the door frame fixing piece, and the door leaf fixing piece can abut against the limiting block. The door opening device is simple in structure and convenient to use, and a user can adjust the maximum door opening angle of the door at any time according to own needs; when the door reaches the limit position, the limit position of the door is well controlled due to the existence of the limiting device, and the door leaf is prevented from being damaged by touching other things.

The utility model discloses an automatic whole plant phenotype imaging system, which comprises an imaging darkroom provided with a channel penetrating through the imaging darkroom, and two ends of the channel are respectively provided with a room door; the conveying mechanism is arranged in the channel; the loading box is arranged on the conveying mechanism and can be driven to move in the extending direction of the channel, a plurality of cultivation boxes are arranged in the loading box, and one side of each cultivation box is a transparent side wall; the moving mechanism is arranged in the imaging darkroom; the first phenotype imaging mechanism is arranged in the imaging darkroom and faces the detection position; the second phenotype imaging mechanism is arranged in the imaging darkroom and faces the detection position; and a control mechanism. According to the utility model, the phenotype of the whole plant can be automatically detected, and the data information of the root system and the plant is in one-to-one correspondence every time, so that the corresponding different forms of the root system and the plant in different periods can be fully reflected.

The invention discloses a high-precision weak light detection or communication test system, which comprises a laser power controller, a function generator, a transmitting end microcontroller, a shielding box, a source meter, an oscilloscope, a trans-impedance amplifier, a receiving end microcontroller and a computer, a laser light source, an attenuator, a standard device, a test device, a spectroscope, a screw rod, a first sliding table, a second sliding table and a stepping motor are arranged in the shielding box; the laser light source and the attenuator are fixed on the first sliding table, the spectroscope is fixed on the second sliding table, the first sliding table and the second sliding table are arranged on the lead screw, the lead screw is connected with the stepping motor, the attenuator and the stepping motor are connected with the transmitting end microcontroller, the standard device and the testing device are arranged on the side wall of the shielding box, and the attenuator is located between the laser light source and the spectroscope. The standard device is connected with the source meter, and the trans-impedance amplifier is connected with the receiving end microcontroller; the spectroscope is used for irradiating the laser beam on the test device and the standard device, and the shielding box is used for shielding electromagnetic interference and providing a darkroom environment.

The application discloses a kind of photovoltaic module dark current testing device, it is related to dark current detection device technical field, the detection device includes workbench, workbench is placed with cabinet, multiple drawers are slidably installed on cabinet, multiple current detection modules are evenly installed in drawer, workbench is installed with host computer, host computer is electrically connected with current detection module, temperature and humidity control assembly is provided on the cabinet, temperature and humidity control assembly adjusts the temperature and humidity inside cabinet, when drawer is completely pushed into cabinet, darkroom for accommodating photovoltaic module is formed, meet the lightless environment requirement of photovoltaic module dark current test, improve detection precision, host computer as the overall control unit of device forms the closed-loop control of "instruction issue-data acquisition-result feedback", display screen connected with host computer real-time display test state, real-time parameter and test result, replace artificial reading judgment, reduce error.

The application relates to the field of artificial network control, in particular to an artificial network control method, device and system for shielding across a darkroom. By using a fiber link and an internal battery power supply architecture in a fully-closed shielding darkroom, the interference of personnel on a test environment is completely eliminated, monitoring of parameters such as internal temperature and voltage of the integrated darkroom is added, zero-crossing synchronization noiseless operation of phase switching is realized, in addition, user end environment adaptive identification, driving parameter dynamic calibration and equipment life prediction are realized, and the needs of high-precision, unattended automatic phase switching and testing are met.

The invention belongs to the technical field of fire fighting equipment, and particularly relates to a high-altitude fire fighting platform for a large darkroom, which mainly comprises a door frame fixedly arranged on the side wall of the darkroom, and a fire fighting door arranged on the outer side of the darkroom, rotationally arranged relative to the door frame and arranged on the outer side of the darkroom; the fire-fighting platform is arranged on the door frame, a wave-absorbing material is arranged on the fire-fighting platform and covers the door frame, and a preset distance is formed between the edge of the wave-absorbing material and the edge of the fire-fighting platform; the fire-fighting platform comprises a pedal plate and a protection plate, one side of the pedal plate is hinged to the door frame, and the protection plate is hinged to the other side of the pedal plate; when the fire-fighting platform is in an unused state, the pedal plate and the protection plate form a shielding surface, and the wave-absorbing material can cover the edge of the door frame; when the fire-fighting platform is in a use state, the pedal is in a horizontal state, and a preset included angle is formed between the protection plate and the pedal. By the adoption of the structure, a high-altitude fire extinguishing site can be provided for firefighters, meanwhile, the shielding effect of the darkroom can be guaranteed, and the darkroom is very practical.

1. The name of this design product: Anechoic Chamber. 2. Purpose of this design product: used as a radio darkroom. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses an LED lamp detection device which comprises a detection table, the top of the detection table is fixedly connected with a detection box, the top of the detection box is covered with a fixing cover, the top of the fixing cover is connected with a brightness meter in a penetrating mode, the bottom of the fixing cover is fixedly connected with a hanging bracket, the hanging bracket is fixedly connected with an LED installation base, and the LED installation base is fixedly connected with a light source. The beneficial effects of the utility model are that the LED lamp to be detected is firstly installed on the LED installation seat, then the lifting mechanism drives the fixed cover to close the detection box, the LED lamp on the LED installation seat extends into the detection box to carry out darkroom detection, then the LED installation seat is controlled to be electrified, and the LED lamp can be conveniently and rapidly detected. During illumination, the brightness meter can detect the brightness, the heat dissipation mechanism can dissipate heat generated by the LED lamp in the detection process, the structure is reasonable, the brightness of the darkroom can be conveniently detected, and operation is convenient.

The invention discloses an optical absorption coating with a multi-stage nested structure and a preparation method of the optical absorption coating, and particularly relates to an optical absorption coating with a multi-stage nested cross-scale structure, a preparation method of the optical absorption coating and a method for enhancing substrate interface adhesion of the optical absorption coating. The super cross-linked structure of the light absorbing material precursor is utilized to form a nano-micron multi-stage nested pore structure, so that the reflectivity is reduced, and the light absorptivity of the coating in a broadband range is improved; meanwhile, by regulating and controlling different component proportions, curing time and temperature and coating modes of film forming materials and carbon-based light absorbing materials in the coating, an excellent light trapping structure is formed on the surface of the coating, and the surface adhesion of a substrate is improved. The optical absorption coating provided by the invention is wide in substrate selectivity and excellent in interface adhesion performance, has the absorptivity of 99.0% at the wavelength of 400-2000nm, and is suitable for optical components, baffles, light shields, inner walls of lens cones, darkrooms and other systems and parts needing to eliminate stray light.

1. Name of the Design Product: Absorber for Dark Room (DSH-600). 2. Use of the Design Product: This design product is used for installing in an EMC dark room or a microwave anechoic chamber to absorb electromagnetic waves. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective view.