308 results about "Light extinction" patented technology

The invention discloses a magnesia carbon brick automatic detection method based on a laser sensor, and the method comprises the following steps: A1, carrying out the multi-angle scanning of the surface of a magnesia carbon brick through a line laser scanner, and generating high-precision three-dimensional point cloud data; a2, inhibiting graphite reflection interference on the surface of the magnesia carbon brick by adopting a polarization filtering system, and compensating a temperature drift error in real time by fusing an infrared thermometer; and step A3, preprocessing the point cloud data through GPU accelerated parallel computing. The invention relates to the technical field of magnesia carbon brick detection. According to the magnesia carbon brick automatic detection method based on the laser sensor, a polarization extinction technology and a multi-source interference compensation mechanism are fused, the problem of high-reflection surface data acquisition distortion is solved, the point cloud integrity is ensured, interference factors such as production line vibration and dust are actively inhibited, and the detection stability is ensured.

The invention relates to the field of performance testing of high-precision fiber-optic gyroscopes, and discloses an automatic testing method and system for the extinction ratio of a high-precision fiber-optic gyroscope, and the method comprises the following steps: constructing a signal light path and a reference light path, and combining the output light of the signal light path and the reference light path into a combined light signal in an orthogonal polarization state; integrally measuring the extinction ratio of the combined optical signal by using an extinction ratio tester to obtain a measured value; the control unit compares the measured value with a target value of 0dB and generates a control instruction based on a difference value; the voltage controller automatically adjusts the voltage of the integrated optical modulator in the signal light path according to the instruction, and iterative optimization is carried out through closed-loop feedback until the actually measured extinction ratio reaches a target value; and finally recording and solidifying the optimal voltage value. According to the invention, single and accurate extinction ratio overall measurement is used for replacing two times of error-prone independent optical power measurement, full-automatic closed-loop control is realized, the precision, efficiency and consistency of optical power balance are remarkably improved, and the skill requirements on operators are reduced.

The invention discloses a medical endoscope with an extinction anti-pollution structure, and relates to the technical field of endoscopes, the medical endoscope comprises an endoscope main body, the front end of the endoscope main body is provided with a camera module, and the periphery of the camera module is provided with an illumination light source for illumination, an outer sleeve and an extinction structural member; a hollow observation opening is formed in the center of the endoscope body in a penetrating mode, a light blocking sinking table used for blocking front direct light beams emitted by the illumination light source is arranged outside the hollow observation opening in a surrounding mode, and a deflection bevel edge used for diffraction deflection of light rays emitted by the illumination light source is further arranged outside the light blocking sinking table. Through the synergistic effect of physical shielding of the light blocking sinking table and diffraction deflection of the deflection bevel edge, front-side direct stray light of the illumination light source is cut off from the source, side-emitting and oblique-emitting light rays are deflected in a targeted mode, light spot and light fog pollution caused by diffuse reflection of the front end of a transparent guide sheath or a catheter is remarkably eliminated, and the imaging definition is remarkably improved.

The spherical four-glued prism is formed by gluing and connecting three triangular prisms and a curved prism, each gluing surface is plated with a functional film, each non-gluing surface is plated with an anti-reflection film, the outer diameter position of the curved prism is coated with black extinction paint, and the outer diameter position of the curved prism is coated with the black extinction paint. The curved prism can be arranged on any side of the three triangular prisms; the processing technology of the spherical four-cemented prism comprises the following steps: 1) preparing a light blank; 2) plating a first light splitting film, combining, polishing, plating a second light splitting film, combining and polishing in sequence; the method comprises the following steps of (1) preparing a curved prism, (2) cutting the curved prism to form a green body with a specified size, (3) cutting to form a green body with a specified size, (4) pasting an auxiliary lens, (5) processing a spherical surface, (6) removing the auxiliary lens, and (7) plating an antireflection film on the spherical surface, and coating the outer diameter of the curved prism with black matting paint The prism prepared by the method is compact in structure, excellent in performance, high in processing precision and small in gluing deviation, and can realize low-cost and batch production and universalization of a jig at the same time.

The invention relates to a laminated staggered sub-wavelength polarization grating structure and a preparation method thereof, through staggered arrangement of a first metal grating layer and a second metal grating layer, transmission of polarized light of a transverse electric field can be effectively inhibited, and the extinction ratio is remarkably improved. Through the substrate, the first dielectric layer, the second dielectric layer, the first metal grating layer, the third dielectric layer and the second metal grating layer which are sequentially arranged from bottom to top, the whole device obtains a higher extinction ratio while keeping high transmittance, the overall structure is simple, the processing difficulty and cost are reduced, and the production efficiency is improved. And the number of the used dielectric layers and metal layers is small, the thickness requirement is low, and therefore it is ensured that the cost is controllable.

The invention discloses a polarization sensitive type broadband absorber based on metal-medium stacking, and relates to the technical field of micro-nano photonic devices and infrared detection. The absorber sequentially comprises a bottom-layer high-loss metal reflecting layer, a multi-layer stacked composite dielectric cavity structure and a top-layer sub-wavelength metal grating from bottom to top, according to impedance matching and interference resonance theories, a broadband absorption substrate is constructed through a multi-layer film structure at the bottom, and light energy is converted into heat energy by utilizing the high loss characteristic of bottom layer metal; plasmon resonance is excited through the top metal grating, the coupling efficiency of TM polarized light is enhanced, and TE polarized light is cut off; the above structural design successfully realizes efficient broadband absorption and high polarization extinction ratio in an infrared band. The structure is simple in design, is compatible with a CMOS technology, and has excellent wide-angle stability. And meanwhile, polarization screening can be realized without an external polaroid, and miniaturization and integration of an infrared detection system are facilitated.

An integrated configurable photodetector with an ultra-high circular polarization extinction ratio and a preparation method therefor are provided. The photodetector includes a metal reflective layer, a dielectric layer, an electrode layer, and a two-dimensional material layer. The electrode layer includes symmetrically arranged Z-shaped metallic optical antenna arrays which are respectively integrated with a source electrode and a drain electrode and have opposite chirality. The photodetector operates at zero bias state, and a photo-response is photovoltaic effect, hot electron injection, photo-thermoelectric effect and so on induced by a Schottky junction composed of the source electrode, the drain electrode and the two-dimensional material. By adjusting the distribution of the incident light in the source and drain electrode regions, under specific Circularly polarized light, photocurrents of equal magnitude but opposite directions cancel each other out, resulting in a net output of zero and significantly reducing noise.

The invention relates to the technical field of optical communication, and provides a polarization separation rotator and optical communication equipment. The polarization separation rotator comprises an input coupling waveguide, a ridge waveguide and a separation waveguide, and the input coupling waveguide, the ridge waveguide and the separation waveguide are sequentially arranged in the light propagation direction; the input coupling waveguide is used for coupling an input optical signal to the ridge waveguide, and the input optical signal comprises two polarization modes; the vertical section of the ridge waveguide is in a step shape to form a vertical asymmetric structure, and the vertical section is perpendicular to the light propagation direction. And the separation waveguide is used for separating the optical signals in the two polarization modes so as to respectively transmit the optical signals to different output ports. According to the polarization separation rotator provided by the invention, the defects that the size is difficult to further reduce and the polarization extinction ratio is reduced in the prior art are overcome, efficient polarization mode hybridization is realized by increasing the asymmetry in the vertical direction, and miniaturization of the polarization separation rotator is facilitated.

The invention discloses a light source system capable of continuously adjusting an attenuation ratio, and belongs to the technical field of optical radiation measurement and photoelectric detection. In order to solve the problems of wavelength dependence, discontinuous adjustment, spectrum distortion and the like existing in an existing light intensity adjusting scheme, a combined structure of an integrating sphere and a diaphragm cylinder is adopted, and the device comprises a light source, the integrating sphere with the high-reflection inner wall, a front-end adjustable diaphragm, the diaphragm cylinder with the extinction inner wall and a rear-end adjustable diaphragm. Continuous attenuation of output light intensity in a predetermined dynamic range is realized by adjusting the apertures of the front and rear diaphragms, the lower limit of attenuation ratio meets the requirement, and the dynamic range can reach more than three orders of magnitude. The system uses the integrating sphere to form a stable Lambert light source, the attenuation process depends on geometric parameters, spectral distribution and spatial uniformity basically remain unchanged, and the non-uniformity of a light-emitting surface is not greater than 5%. The invention further provides a calibration method, high-precision attenuation prediction is achieved through detector measurement and view factor model fitting, and the calibration method is suitable for weak cursor calibration, detector linearity testing and other applications.

The invention relates to the technical field of phenotype measurement in aquatic genetic breeding, in particular to a macrobrachium rosenbergii small-size shrimp high-throughput phenotype measurement method and measurement system. According to the method, a camera obscura environment is constructed through a white shooting bottom plate, a dark extinction inner wall and an LED area array light source in a measuring box body, and illumination is adaptively adjusted by combining rough segmentation of a preview and analysis of a local gray histogram, so that stable bimodal gray distribution is formed between a shrimp body and a background. On the basis, a segmentation-key point combined deep learning model is adopted, a shrimp body mask and a standard key point are output at the same time, topological consistency loss constraints of a framework side length proportion and an included angle are introduced in training, and key point mismarking and drifting caused by the transparent body color are remarkably reduced. According to the method, rapid, non-contact, high-precision and high-throughput measurement of macrobrachium rosenbergii small-specification individual phenotype parameters and weight is realized, and a high-quality structured phenotype database is provided for genetic evaluation and multi-character combined selection.

The invention relates to the technical field of optical communication, in particular to a silicon optical chip monitoring method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining an input monitoring value and an output monitoring value integrated by a silicon optical chip, the input monitoring value is an input optical power value collected by an input monitoring photodiode integrated with the silicon optical chip, the output monitoring value is an output optical power value collected by an output monitoring photodiode integrated with the silicon optical chip, and a power ratio parameter is calculated according to the input monitoring value and the output monitoring value; the power ratio parameter is compared with a preset ratio range, and when it is detected that the power ratio parameter is not in the preset ratio range, it is determined that the silicon optical chip has an optical extinction ratio abnormal risk; and outputting a detection result containing the risk that the optical extinction ratio is abnormal, so that the real-time performance of abnormal detection of the optical extinction ratio of the silicon optical chip is improved.

This invention discloses a bimetallic hybrid metasurface that achieves polarization-selective absorption and tunable liquid immersion. The metasurface consists of a three-layer structure: a bimetallic hybrid layer, a silicon dioxide layer, and a silver reflective layer. The bimetallic hybrid layer is composed of aluminum and titanium nanoribbons. The bimetallic hybrid metasurface achieves perfect absorption of incident light under x-polarized light at the resonant wavelength and specular reflection of incident light under y-polarized light, thus exhibiting a high extinction ratio. Furthermore, the absorption peak wavelength of the metasurface can be continuously and dynamically tuned by adjusting the unit period of the metasurface or by utilizing active tuning through liquid immersion. The bimetallic hybrid metasurface proposed in this invention achieves high-contrast polarization-selective absorption and possesses advantages such as simple structure, ease of integration, and dynamic tunability, thus it can be widely applied in practical applications such as novel optical polarizers and photodetectors.

A LIDAR and a movable device are provided. The LiDAR includes a housing, a transmitter, a receiver, a beam splitter, and a first extinction device. The beam splitter includes a light-transmitting portion and a light-reflecting portion connected to the light-transmitting portion. The first extinction device is located inside the housing, along the transmission path of the echo light, and between the beam splitter and the receiver, and the first extinction device is configured to block the optical signal in the non-primary optical path regions from being transmitted to the receiver.

The invention provides an optical waveguide and a near-to-eye display device. The optical waveguide comprises a light guide part, a relay module arranged on the light guide part and a coupling-out module. Wherein the relay module is used for coupling light rays propagated by total internal reflection in the light guide piece to the coupling-out module; the light guide device further comprises an extinction device arranged on the light guide part, the extinction device at least comprises a first extinction device, and the first extinction device is used for absorbing one-dimensional emergent light transmitted by the relay module. Wherein the ratio of the refractive index of the first extinction device to the refractive index of the light guide part is within a set threshold value, and extinction particles are doped in the first extinction device. According to the technical scheme, the extinction device is arranged on the light guide part to eliminate the one-dimensional emergent light transmitted by the relay module, so that stray light in the light guide part is reduced, and the display effect of the near-to-eye display device is improved.

The present disclosure provides a middle wave infrared integrated polarization detector and a preparation method. The middle wave infrared integrated polarization detector comprises a plurality of polarization gratings arranged in a periodic array, a dielectric film layer and a middle wave infrared detection chip arranged in sequence. The middle wave infrared detection chip has a plurality of pn junction regions arranged in a periodic array. The pn junction regions are arranged one by one corresponding to the polarization gratings. The middle wave infrared detection chip has a plurality of isolation grooves. The isolation grooves are arranged between adjacent two polarization gratings. The isolation grooves are filled with isolation pieces. By arranging the isolation pieces in the middle wave infrared detection chip, the polarization light crosstalk of adjacent two polarization gratings is suppressed, and the extinction ratio of the middle wave infrared integrated polarization detector is improved. The preparation method of the present disclosure uses nanoimprint technology to directly process nanoscale polarization gratings on the dielectric film layer, which can improve the processing efficiency and reduce the processing cost.

The invention discloses an arc light online monitoring device for an energy storage power distribution switch cabinet, and belongs to the technical field of arc fault monitoring. Comprising a monitoring unit and a collecting unit, a quartz window short horn mouth captures 2pi spherical degree arc light at a time, and a closed plastic optical fiber sends a pulse into an integrating sphere within 50 microseconds; a black body extinction cylinder-narrow band filter-integrating sphere multi-stage attenuation is carried out, strong light is weakened firstly, then an ultraviolet characteristic spectrum is extracted, flash of a background lamp and a camera is completely eliminated, arc light position offset still keeps stable output, and high signal-to-noise ratio identification is realized; a real arc is judged according to the ratio of pure arc light to total light, and interference is avoided; after confirmation, a level in direct proportion to energy is output immediately, a background acts according to a three-level strategy of prompting, tripping and quick breaking, no optical cable is exposed in the whole process, the whole process is not influenced by dust condensate water, a closed loop from arcing to protection decision is completed within 2 ms, and real-time, reliable and maintenance-free arc light online monitoring is provided for an energy storage power distribution switch cabinet.

The present invention provides a quantum entanglement light source device that takes advantage of the benefits of using optical fibers and can compensate for the decrease in polarization extinction ratio with a simple configuration. [Solution] A quantum entanglement light source device according to one embodiment of the present invention comprises a wavelength conversion unit capable of generating polarized light with a wavelength longer than the wavelength of the pump light, and a polarization control unit provided midway through optical fibers provided on both end faces of the wavelength conversion unit, capable of controlling the polarization direction of the pump light in the wavelength range.

The invention discloses a bottom mud resuspension dimming method for water source algae control, and relates to the technical field of blue-green algae prevention and control, the method comprises the following steps: establishing an experiment system comprising a plurality of groups of independent water body simulation devices, each group of device being provided with a bivariate combination of bottom mud concentration and resuspension frequency; constructing a parameterized extinction model related to the sediment concentration and the sedimentation time based on the real-time illumination data of the vertical layered optical monitoring network; the turbidity of the water body is monitored in real time, when the turbidity exceeds a critical value, a dynamic compensation coefficient is generated, and a theoretical daily light receiving quantity threshold value is increased according to a direct proportion relation; traversing all double-variable combinations, and screening variable combinations which simultaneously meet the condition that the actual daily light receiving quantity is not greater than the theoretical threshold value subjected to turbidity correction and the product of the total bottom mud adding quantity and the mechanical energy consumption is minimized. According to the scheme, the parameter adaptability under the complex hydrological condition is remarkably improved, the theoretical optimal cost boundary is approached, and the algae control interruption risk is reduced.

The application discloses a continuous variable quantum key distribution method based on an inner modulation pulse light source, which comprises the following steps: a sending end provides signal light and local light to a receiving end, or the sending end provides signal light to the receiving end, and the receiving end provides local light; the receiving end interferes the signal light and the local light, and extracts a component with channel noise and initial data from the interference result; and the receiving end processes the component with channel noise and the initial data to obtain amplitude modulation information related to the channel noise, namely, an initial key. The application makes full use of the random phase difference between the front and rear pulses generated by the inner modulation pulse light source, and makes the detection result independent of the phase difference, without any phase feedback and compensation, and the modulation mode is simpler; higher light pulse extinction ratio and light pulse intensity can be obtained, so that the transmission distance is farther, and the detection efficiency is higher; the high complexity double light source frequency locking technology can be avoided, and the system complexity is reduced.

The invention discloses a high-speed and high-extinction-ratio cascade MZI (Mach Zehnder Interferometer) electro-optical switch based on an electro-optical material. According to the electro-optical switch, a plurality of MZI structures are cascaded and integrated on an electro-optical material platform (such as lithium niobate or lithium tantalate) with an ultra-wide optical transparent window, and the initial phase error of each modulation arm is subjected to thermo-optical calibration by utilizing the refractive index change of an electro-optical material caused by temperature regulation and control; therefore, the consistency and long-term stability of the initial phase of the cascaded MZI are ensured. After thermo-optical phase calibration is completed, electro-optical refractive index regulation and control can be carried out on a plurality of phase modulation arms of the cascaded MZI at the same time only by applying a single driving voltage, and optical switch switching with the ultrahigh extinction ratio is achieved. The device has a pre-calibration function, a working point is stable and does not drift after calibration, and high-speed and high-extinction-ratio switching can be achieved only through a high-speed signal; and meanwhile, the device has the advantages of simple structure, flexible design, easiness in cascade expansion, low requirement on technological parameter tolerance and the like.

The embodiment of the invention discloses a window mirror assembly, a laser radar, automatic driving equipment and an assembly process, the window mirror assembly comprises a lens cone, two window mirrors and a moisture absorption structure, and the lens cone is provided with an optical channel; the two window mirrors are respectively positioned at two ends of the light channel and are in sealed connection with the lens cone; the moisture absorption structure comprises a moisture absorption piece and a light extinction piece, and the moisture absorption piece is arranged in the light channel and connected with the channel wall of the light channel; the extinction piece is arranged on the side, facing the optical channel, of the moisture absorption piece, moisture in the optical channel can be absorbed through the moisture absorption piece, the probability that the moisture becomes condensation to be attached to the inner wall of the window mirror is reduced, and therefore the influence of condensation on laser radar detection can be reduced; the extinction piece can reduce reflection and scattering of stray light generated by emergent light beams and reflected light beams on the surface of the light channel so as to ensure that the laser radar can have high detection precision.

This application relates to the field of optical polarization measurement technology, specifically to a wide-spectrum, high-bandwidth static spectral modulation Stokes polarization measurement device, comprising a polarization modulation module, a spectral sampling module, and a high extinction ratio polarizer. The polarization modulation module includes a phase retarder and a linear polarizer; the spectral sampling module has sub-nanometer spectral resolution; the high extinction ratio polarizer includes a halogen tungsten lamp and a Glan Taylor prism for generating high-purity linearly polarized light; the obtained demodulation factor and the modulation spectrum acquired by the spectral sampling module are used to invert the Stokes parameters using zero-heterodyne coherent demodulation technology. This application employs a phase retarder with high birefringence, which, for the same thickness, produces an optical path difference tens of times greater than that of quartz, increasing the Stokes polarization measurement bandwidth by a factor of the response and improving the measurement accuracy of polarization spectral parameters. Simultaneously, the zero-heterodyne coherent demodulation method is used to eliminate the dispersion interference of the phase retarder through calibration.

The embodiment of the application provides a state detection device of a stylus and electronic equipment, a magnetic field generating structure is arranged on the stylus, the device comprises: a magnetic extinction structure and a processing unit; the magnetic extinction structure is arranged on one side inside the electronic equipment; the adsorption position of the stylus is the side outside the electronic equipment, and the adsorption position of the stylus is opposite to the magnetic extinction structure; the magnetic extinction structure comprises an LED lamp; the LED lamp changes the light intensity thereof according to the change of the magnetic field intensity; the magnetic field intensity where the LED lamp is located is changed by the magnetic field of the magnetic field generating structure; the signal processing unit is used for detecting the change of the light intensity of the LED lamp, and determining the state of the stylus according to the change of the light intensity of the LED lamp; the state of the stylus is an adsorption state or a lifting state. The embodiment of the application does not need to make an opening processing on the appearance of the electronic equipment, the consistency and the appearance of the whole machine appearance can be maintained, and the accuracy of state detection is improved.

The invention discloses an efficient analysis method for the photothermal effect of a metal micro-nano structure, and the method comprises the steps: constructing a transient photothermal coupling simulation platform based on a time domain discontinuous Galerkin method by introducing temperature-dependent electrical parameters and dynamically correcting a dispersion model of metal according to the photothermal effect caused by local plasmons in the metal micro-nano structure; the influence on the extinction characteristic when the metal micro-nano structure generates the photothermal effect is analyzed. Meanwhile, in order to solve the problem that the thermal field time scale is not matched with the light field time scale, a time scaling factor is provided, an actual temperature field is mapped into a scaling variable through dimensionless processing, and the steady-state thermal field convergence speed is remarkably improved on the premise that the temperature gradient distribution accuracy is kept. The method is suitable for complex micro-nano light field multi-physical field problem analysis.

This invention relates to the field of optical thin film fabrication technology, specifically to a method for fabricating a high extinction ratio, adhesive-free polarizing beam splitter film resistant to high and low temperature environments. The method includes the following steps: S1, substrate pretreatment; S2, polarizing beam splitter film deposition; S3, adhesive-free bonding treatment; S4, annealing strengthening; and S5, post-treatment. This invention uses an adhesive-free optical contact bonding process to replace the traditional organic bonding process, completely eliminating the temperature adaptability bottleneck caused by organic adhesive layers. The bonding interface relies on intermolecular forces for adhesion, eliminating problems such as aging and debonding of organic adhesives. This allows the device to operate stably in a wide temperature range of -60℃ to 120℃, greatly improving the device's environmental adaptability and meeting the needs of extreme environments such as deep space exploration and polar observation.

This invention relates to the field of petroleum exploration and development technology, and is a method and system for fluid property identification based on micro-fluorescence thin section technology. The method includes acquiring the micro-fluorescence thin section spectrum of a rock sample; obtaining the true fluorescence area under blue light and the true fluorescence area under ultraviolet light based on the micro-fluorescence thin section spectrum of the rock sample; substituting the true fluorescence area under blue light and the true fluorescence area under ultraviolet light into an extinction index model to obtain an extinction index; and comparing the extinction index with an extinction index evaluation standard to identify fluid properties. This invention establishes an extinction index for identifying reservoir fluid properties. Its extinction index model extracts the pair of sensitive parameters—fluorescence area under blue light and ultraviolet light—by utilizing the spectral variation characteristics between different crude oils and different proportions of water under micro-fluorescence thin section technology. This effectively solves the problem of reservoir fluid property identification, and the method can quantitatively identify reservoir fluid properties.

The invention relates to the technical field of biological detection, and provides a biological tissue component detection device and a detection method. The biological tissue component detection device comprises a laser unit, a sample table, a polarization unit, a detector, a first scanner and a processor, the polarization unit is used for reflecting the S polarized light emitted by the laser unit to the biological tissue and filtering out the S polarized light in the mixed light reflected by the biological tissue; the detector is used for collecting light intensity of theta polarized light; the first scanner is used for acquiring space coordinates of each region of the biological tissue; and the processor is used for generating a polarization angle spectrum of the single region based on the light intensity and the polarization angle, generating a global polarization angle spectrum of the biological tissue based on the plurality of polarization angle spectrums and the plurality of space coordinates, and detecting the biological tissue based on a peak polarization angle, a spectrum width and a polarization extinction ratio of the global polarization angle spectrum. According to the biological tissue component detection device, spectrum similar substances in multiple industries can be distinguished, and the biological tissue distinguishing accuracy is improved.

The utility model discloses a weather-proof reflective film, which belongs to the technical field of optical elements and comprises a prism layer, the prism layer comprises a plurality of prism units distributed in an array, each prism unit is of a triangular pyramid structure, and a plurality of layer concave parts are arranged on the peripheral side of each prism unit from the top end in a step shape. The prism units are fixedly provided with extinction materials on the bottom surfaces of the layer concave parts from bottom to top, and the light transmittance of the extinction materials is lower than that of the prism units. According to the weather-proof reflective film provided by the utility model, by arranging the plurality of extinction materials which are arranged at intervals, light path gathering for retroreflection is effectively reduced, the upper limit of light intensity is effectively reduced, and meanwhile, by arranging the inner concave parts, the light paths among the extinction materials are further dispersed, so that the light intensity is improved. And a person is not easy to feel uncomfortable when directly looking at the light spot.

The utility model relates to a micro light-emitting device comprising a light-emitting structure having at least one light-emitting area; the color filtering structure is located on the light-emitting side of the light-emitting structure and comprises an extinction layer and at least one color filtering unit, the extinction layer is provided with at least one light-transmitting area corresponding to the at least one light-emitting area, and light emitted by the light-emitting structure in each light-emitting area is emitted out through the corresponding light-transmitting area; each color filtering unit is arranged corresponding to one light-emitting area, at least part of the color filtering unit is filled in the light-transmitting area corresponding to the corresponding light-emitting area, and each color filtering unit is configured to transmit the light of the target color and reduce the light of the non-target color in the light emitted by the light-emitting structure in the corresponding light-emitting area; and the light condensing structure is located on the side, away from the light emitting structure, of the color filtering structure and is configured to converge light emitted from the light transmitting area, so that light crosstalk between pixels can be reduced, the color purity can be improved, and the display performance of a product can be improved.

The application provides a kind of underwater radiation sensor equipment immersion factor fast measuring device and method, including the uniform light source assembly for providing the highly uniform distribution light field of light energy to the photosensitive surface of measured sensor, the dropper with scale and for absorbing specified volume liquid, the light extinction adapter ring that is set on the front end of measured sensor and makes the photosensitive surface of measured sensor in thin water layer under the action of the dropper and the computer for calculating the immersion factor of measured sensor according to the response value of measured sensor;The beneficial effects of the application are that: the primary homogenization integrating sphere and secondary homogenization integrating sphere in the uniform light source assembly can realize full-angle uniform light field, which can eliminate the error caused by correcting the change of refraction solid angle with water depth, and there is no need for accurate optical path tuning;The application can also quickly obtain accurate immersion factor value by directly comparing the radiation value of stable light source measured by measured sensor in fixed water depth and air.