303 results about "Light reflectance" patented technology

The utility model is suitable for the technical field of solar cells, and provides a back contact solar cell, a photovoltaic assembly and a photovoltaic system, the back contact solar cell comprises a silicon substrate, the back surface of the silicon substrate is provided with a plurality of first doped regions and a plurality of second doped regions which are sequentially and alternately arranged along a first direction, the polarities of the first doped region and the second doped region are opposite, the adjacent first doped region and second doped region are electrically isolated through a groove, the groove comprises a side wall and a bottom surface, the side wall is provided with a plurality of first miniature pyramid structures, the bottom surface is provided with a plurality of second miniature pyramid structures, the first miniature pyramid structures correspond to a second direction, and the second direction corresponds to a third direction. The second micro pyramid structure corresponds to a third direction, and the third direction is perpendicular to the bottom face and intersects with the second direction. Through the arrangement, the light trapping effect between the first micro pyramid structure and the second micro pyramid structure is good, and the light reflectivity is reduced, so that the photoelectric conversion efficiency of the back contact solar cell is improved.

The utility model provides an LED chip and lighting equipment, and relates to the technical field of semiconductors. Each of the electrode pads and the electrode fingers is composed of a reflective electrode layer and an electrode layer, the first reflective electrode layer can improve the light reflectivity of the electrode fingers, and the second reflective electrode layer can improve the light reflectivity of the electrode pads, so that the purpose of improving the luminous efficiency of the LED chip is achieved. The first electrode layer and the second electrode layer can be understood as electrode layers of a conventional LED chip, the first electrode layer covers the first reflection electrode layer, and the second electrode layer covers the second reflection electrode layer, so that the reflection electrode layers and the epitaxial layer can be prevented from peeling off; and the second electrode layer is also in contact with the bump structure of the epitaxial layer, and the contact stability of the part is relatively higher than the contact stability of the second electrode layer and the second reflection electrode layer, so that peeling between the second electrode layer and the second reflection electrode layer can be avoided, and the stability of the electrode structure is comprehensively improved.

The present disclosure provides a method and system for generating and inferring a high-resolution true-color visible light model. This approach leverages historical infrared brightness temperature data at the original resolution to generate a standard distribution model of historical infrared brightness temperatures. A full-disk two-dimensional brightness temperature model is constructed using historical multi-channel brightness temperature data. This model is then compared with the standard infrared brightness temperature distribution model at the original resolution to assess similarity, allowing for the identification of clear-sky areas and the formation of a corresponding clear-sky mask. The clear-sky signal is subsequently removed to produce a historical multi-channel cloud satellite dataset. To further refine the dataset, the historical multi-channel cloud satellite dataset is regionally segmented, extracting valid data from each region to form a local time-span dataset, ensuring more precise and reliable modeling of true-color visible light reflectance.

The invention relates to a bionic mist catching net material and a construction method and application thereof, and belongs to the field of air water collecting materials. The bionic mist catching net is a thermoplastic polymer fiber net, and radiation refrigeration particles are blended in fibers of the fiber net; and the part coated with the hydrophobic micro-nano coating and the part not coated with the hydrophobic micro-nano coating on the surface of the fiber net are alternately distributed. The radiation refrigeration particles are introduced into the bionic mist catching net material, and the hydrophobic coating is distributed on the surface of the bionic mist catching net material, so that the light reflectivity and the intermediate infrared emissivity are improved, and the radiation refrigeration efficiency is improved. Besides, the surface hydrophobic coating part forms a super-hydrophobic area, fog drops are promoted to be quickly coalesced into beads after collision, energy dissipation caused by spreading of a liquid film is reduced, the fiber substrate without the coating is kept hydrophilic, a heterogeneous wetting surface is formed, Laplace pressure difference is generated by surface energy difference at a hydrophilic-super-hydrophobic interface, and the super-hydrophobic surface is formed. The spontaneous migration of liquid drops from a super-hydrophobic region to a hydrophilic region is accelerated, and the water collection efficiency is remarkably improved.

The invention relates to a regulation and control method based on an automatic measuring and monitoring system of a UV lamp set and a monitoring and measuring system of the regulation and control method, and belongs to the technical field of UV curing processes. Comprising the following steps: S1, periodically detecting the light reflectivity within the radius range of 15-20 cm at the periphery through a UV energy detection sensor; s2, according to the light reflectivity obtained in the step S1, calculating to obtain the light variation within the radius range of 15-20 cm on the periphery; s3, presetting an abrupt change threshold value M, comparing the abrupt change threshold value M with the light variation in the detection period calculated in the step S2, when the abrupt change threshold value M is greater than the light variation, considering that the reflectivity abrupt change occurs in the sampling period, and calculating the reflectivity abrupt change rate; s4, according to the reflectivity abrupt change rate obtained in the step S3, the UV energy distribution abnormal level is judged; s5, positioning the coordinates of the abnormal region after the abnormal level is obtained in the step S4; and corresponding adjustment measures are taken according to different abnormal levels.

The invention relates to the field of energy-saving and environment-friendly new materials, in particular to a passive cooling radiation refrigeration light-transmitting film and a preparation method thereof. Comprising a first release protective film layer, a back adhesive layer, a first base material film layer, a second base material film layer, an IR reflecting layer, an IR selective emitting layer, a third base material film layer, a self-cleaning and self-repairing functional coating and a second release protective film layer which are sequentially stacked. The passive cooling radiation refrigeration light-transmitting film provided by the invention is moderate in thickness, strong in flexibility and large in stretchability, and can be tightly attached to any surface part. Under the condition that the appearance color is not influenced, the visible light wave band transmittance is greater than 70%, the infrared light reflectivity is greater than 68%, the 8-13 [mu] m atmosphere window emissivity is greater than 97%, the radiation refrigeration power is greater than 140 W / m < 2 >, and the heat insulation performance is good; as the used base material is TPU or PET, the tensile property is large, the flexibility is strong, and the product has good flexibility and contractibility, and is not easy to wrinkle and blister during film pasting construction.

An optical sensor device configured for use in combination with a fluid flowing through a tubing, the optical sensor device includes a light source configured to emit a light, with at least a portion of the light being exposed to a fluid in the tubing and reflected, an optical sensor configured to receive at least a portion of the reflected light and analyze at least a portion of the received reflected light to determine a reflectance measurement, and a controller configured to correlate the reflectance measurement to an input particulate level and generate an output indicative of the fluid flow rate corresponding to the reflectance measurement. Also disclosed is a method of optically measuring fluid flow rate in a fluid processing system including optically monitoring fluid flow through a transparent portion of a tubing by measuring light reflectance of particles in the fluid.

A vehicular driving assist system includes an interior rearview mirror assembly having a mirror head adjustable about a mounting base. The mirror head accommodates an electrochromic mirror reflective element. An electrically dimmable window is disposed at the vehicle and is electrically operable to adjust visible light transmissivity of the electrically dimmable window. The vehicular driving assist system, based at least on processing sensor data captured by a light sensor, determines ambient light at the vehicle. The vehicular driving assist system, based at least on the determined ambient light, (i) adjusts light reflectivity of the electrochromic mirror reflective element and (ii) adjusts visible light transmissivity of the electrically dimmable window.

The invention provides a method for optimizing the luminous reflectance of a graphene nano coating of a photovoltaic panel, which belongs to the technical field of photovoltaic panels and comprises the following steps: firstly, acquiring optical characteristic parameters of the surface of the photovoltaic panel by using various instruments such as a laser reflectometer and a scanning electron microscope; performing multivariate decomposition on the reflectivity data by adopting a Fourier transform method, and constructing an optical characteristic matrix by applying a least square method; 100 groups of coating structure parameters are generated through a K-means clustering algorithm and are subjected to clustering analysis, and 10 clustering centers are selected; a sample is prepared by adopting a chemical vapor deposition method, and experimental verification is carried out under the illumination intensity of 1000 watts per square meter. And finally, through 50-generation iterative optimization of a genetic algorithm, obtaining optimal structural parameters of the graphene nano-coating, and preparing the optimized photovoltaic panel surface coating by using a plasma enhanced chemical vapor deposition technology, so that the technical problem that the optical characteristics of the graphene nano-coating are difficult to accurately regulate and control to achieve a better reflection inhibition effect is solved.

The present application provides a kind of vehicle laminated glass and its application, which includes outer sheet glass, inner sheet glass and intermediate film, the outer sheet glass has the first surface towards outside and the second surface towards inside, the inner sheet glass has the third surface towards outside and the fourth surface towards inside, the intermediate film is bonded with the second surface and the third surface, infrared reflection film is provided between the outer sheet glass and the inner sheet glass, and low-emissivity film is provided on the fourth surface;The mirror factor α of the vehicle laminated glass is less than or equal to 15, and the mirror factor α is according to the formula α=RL / TL 2 RL is the visible light reflectance of the vehicle laminated glass measured from the inside, and TL is the visible light transmittance of the vehicle laminated glass. When the vehicle laminated glass is used as the sunroof glass of the vehicle roof, the use of sunshade curtain can be cancelled, the mirror reflection effect of the inside can be effectively improved, and the user experience and passenger privacy can be protected.

The utility model provides a glass assembly, a window assembly and a vehicle. The glass assembly includes: a glass body; the first functional layer is suitable for adjusting the visible light reflectivity and is arranged on one side of the glass body; and the second functional layer is suitable for adjusting haze and is arranged on one side of the first functional layer. According to the glass assembly, the first functional layer with the visible light reflectivity adjusting function and the second functional layer with the haze adjusting function are integrated, and the visible light reflectivity and / or the haze can be adjusted according to different application occasions and user requirements, so that the glass assembly has multiple functions, the user experience is improved, and the cost benefit requirement is met.

To provide a power generation module and a window in which a lead wire is inconspicuous when viewed from the indoor side.SOLUTION: A power generation module according to the present disclosure includes a first substrate having translucency, a transparent second substrate facing the first substrate, a first electrode layer provided on the first substrate, a semiconductor layer stacked on the first electrode layer, a second electrode layer stacked on the semiconductor layer, a lead wire provided on the first electrode layer, and a reflection suppression layer located between the lead wire and the second substrate so as to cover the lead wire in plan view. The optical reflectance of the reflection suppressing layer is lower than the optical reflectance of the lead wire. A window according to the present disclosure includes the power generation module and a fixture for fixing the power generation module to an installation object.SELECTED DRAWING: Figure 2

The invention discloses a Mo / Si reflector reflectivity measurement system and method based on an acousto-optic monochromator, the system comprises an EUV light source, an EUV energy meter, a monochromator and an EUV reflectivity meter, the EUV light source is used as a detection light source, the EUV energy meter is used for monitoring the fluctuation condition of the EUV light source and providing a light source fluctuation calibration coefficient for reflectivity measurement, the monochromator screens light based on the acousto-optic effect of an acousto-optic crystal, and the EUV reflectivity meter is used for measuring the reflectivity of the EUV light source. It is ensured that the EUV reflectivity meter only receives light with the required wavelength; the EUV reflectivity meter serves as a measurement space of a Mo / Si reflector sample, mechanical design is adopted, the size of the EUV reflectivity meter is reduced, meanwhile, a collimation optical system is added, and the accuracy of a measurement result is improved. The invention further provides a measurement method, accurate measurement of the angular spectrum and the reflection spectrum of the Mo / Si reflector is achieved, an effective technology is provided for measurement and development of the Mo / Si reflector, and therefore the EUV photoetching technology is continuously improved.

An organic light emitting display panel and an organic light emitting display device include an encapsulation layer positioned on a substrate where an organic light emitting element is disposed, a plurality of color filters positioned on the encapsulation layer, an overcoat layer in an opaque color, positioned on the plurality of color filters and including a plurality of colored particles, and an adhesive layer positioned on the overcoat layer and having reduced external light reflectance and power consumption by adjusting the thickness of the overcoat layer or the thickness of the color filter layer for each subpixel and allowing the overcoat layer to differ in color from the plurality of color filter layers.

The present invention relates to an optical lens comprising a substrate and a multi-layer antireflection coating provided on at least one of the main surfaces of the substrate and comprising a stack of at least one layer having a high refractive index and at least one layer having a low refractive index, a spectral reflectance curve of the multi-layer antireflection coating for an angle of incidence in the range of 0 DEG to 15 DEG has a reflection peak centered on a wavelength in the range of 435-450 nm and having a maximum reflectance of less than or equal to 30% and a full width at half maximum of less than or equal to 90 nm, and a local reflectance minimum in the range of 380-420 nm of less than or equal to 2% and a multi-layer antireflection coating for the at least one major surface, the multi-layer antireflection coating providing the at least one major surface with: for an angle of incidence in the range of 0 to 15 degrees, the present invention relates to a light-emitting device comprising a light-emitting element, a light-emitting element, an average light reflection factor Rv of 380 nm to 780 nm of less than or equal to 2.5%, an average blue light reflection factor RmB1 of greater than or equal to 15% in the wavelength range of 420 nm to 450 nm of greater than or equal to 15%, an average blue light reflection factor RmB3 of greater than or equal to 15% in the wavelength range of 440 nm to 460 nm of greater than or equal to 15%, and a ratio RmB1 / RmB3 of less than or equal to 1.

An object to be solved by the present invention is to provide a multilayer coating film forming method by which a multilayer coating film having reduced nonuniformity and exhibiting excellent luster and high flip-flop properties can be formed. The present invention provides a multilayer coating film forming method characterized by including: applying an aqueous first colored paint (X) containing a color pigment (x1) and an effect pigment (x2) on an object to be coated to form a first colored coating film; applying an aqueous second colored paint (Y) containing a viscosity modifier (y1), a color pigment (y2), and an effect pigment (y3) to form a second colored coating film; applying a clear paint (Z) to form a clear coating film; and curing by heating, wherein a solid content of the aqueous second colored paint (Y) is in a range of 0.1 to 6 mass %, an average value of light transmittance of the second colored coating film is 1% or lower, and a difference |R(X)−R(S)| between an average value of light reflectance of the first colored coating film and an average value of light reflectance of the multilayer coating film is 5% or lower.

The invention discloses a semiconductor resistivity nondestructive testing method and system based on modulation light reflection, relates to the technical field of semiconductor resistivity detection, and aims to accurately measure a modulation component delta R / R of light reflectivity through a light reflection modulation signal so as to calculate the semiconductor resistivity and further realize quantitative measurement of the semiconductor resistivity. The sensor has ultrahigh sensitivity, can detect tiny carrier concentration change, and is very sensitive to electrical properties of surface and near-surface areas; meanwhile, the spatial resolution is high, and the micron-scale light spot at the sample is suitable for micro-area measurement; a complete optical method does not cause any damage to the sample; various types of samples can be measured; the measuring speed is fast, and the system can be easily integrated in a production line for real-time monitoring.

The invention relates to a method for determining an optical reflectivity of a curved surface (3) of an optical test object (2), in particular a mirror or lens, wherein the reflectivity (R) is determined using a reflectometer (4), in particular an EUV reflectometer, which comprises a light source (5) and a light sensor (6), and wherein, in order to determine the reflectivity, a light beam (7) from the light source (6) reflected on the surface (3) is captured by the light sensor (6) at least at a predetermined distance from the test object (2). According to the invention: the light sensor (6) is displaced at least once for a calibration process such that the reflected light beam (7) is captured at varying distances (x) from the surface (3) of the test object (2), and a reflectivity (R) is determined for each distance (x); and a baseline reflectivity of the surface (3) is determined depending on the captured reflectivities (R).

The application relates to the technical field of intelligent household appliances, and discloses a method for heat dissipation of an air conditioner, which comprises the following steps: determining whether freezing phenomenon exists at a drain outlet according to the change condition of the light reflectivity at the drain outlet; in the case that freezing phenomenon exists, starting a semiconductor heat dissipation fin and increasing the rotating speed of a circulating pump body; and in the case that freezing phenomenon does not exist, adjusting the rotating speed of the circulating pump body according to the temperature of an aluminum base plate. Heat is efficiently guided to the outdoor unit chassis through a heat conduction medium in a heat conduction pipeline to perform ice removal or defrosting, the clogging problem caused by the icing or frosting of the drain outlet is avoided, the utilization rate of energy is improved, the flow rate of the heat conduction medium in the heat conduction pipeline is adjusted based on the overall temperature of the heating component, the heat conduction efficiency of the heat conduction pipeline is matched with the overall temperature of the heating component, and the electric control box of the air conditioner can be timely heat dissipated. The application further discloses a device for heat dissipation of an air conditioner, an air conditioner and a storage medium.

A light scattering device is provided which is capable of suppressing heat generation in and around a light-exiting part and simultaneously limiting an irradiation area. A light scattering device 1 according to the present invention is provided with an optical fiber 10 comprising a core 10a positioned radially in the center and a sheath 10b positioned at the outer periphery of the core 10a, wherein the light scattering device 1 causes light entering from a proximal end of the optical fiber 10 to be emitted from a distal side T of the optical fiber 10.The optical fiber 10 is made of plastic and comprises: an optical transmission element 11 for transmitting the light entering from the proximal end to a distal end; and a light exit element 12, which allows the light transmitted by the light transmission element 11 to be emitted from an outer circumferential surface on the distal side T. The light exit element 12 is treated to suppress heat generation and comprises a reflective element 21 with a light reflectance of 80% or more in an area that does not form the light exit aperture 22 on the outer circumferential surface of the light exit element 12 and in a distal end surface TE. The reflective element 21 contains particles with light-reflecting properties, wherein the particles contain barium sulfate.

According to embodiments of the disclosure, it is possible to increase scattering effect and light reflectance in the area around the light source by increasing the ratio of the base layer exposed around the light source, which have protrusion patterns and have a higher reflectance than the cover layer and are positioned under the cover layer and the wiring layer of the printed circuit where the light source included in the backlight unit. Thus, there may be provided a backlight unit with enhanced light efficiency and image quality in the area around the light source and a display device including the same.

The embodiment of the invention relates to the technical field of vehicle cleaning, and discloses a vehicle surface bird droppings cleaning method and device, electronic equipment, a medium and a vehicle. According to the method, the light reflectivity of at least one wave band is collected as the background reference value, the second spectrum is determined based on the background reference value, the subsequent bird droppings detection efficiency can be effectively improved, the light absorptivity corresponding to the first preset wave band and the adjacent wave band is calculated on the basis, and the detection accuracy is improved. And when the light absorptivity of the first preset wave band is greater than the preset absorptivity and the light absorptivity of the adjacent wave band satisfies the preset condition, determining that uric acid exists, identifying the bird droppings in the to-be-detected area based on the light absorptivity, and performing secondary determination by using the bird droppings verification model, thereby further improving the accuracy of bird droppings detection. The problem that bird droppings attached to the vehicle body cannot be cleaned in time at least is solved, the vehicle body is guaranteed to be clean, and the vehicle body using experience of a user is improved.

This invention provides a liquid crystal light control element with which it is possible to achieve both an antiglare function and a heat generation suppression function. According to an embodiment, this liquid crystal light control element is characterized in that: the element includes a pair of transparent electrode substrates having a transparent electrode layer, and a light control layer disposed inside the transparent electrode substrates and containing liquid crystal molecules; the light control layer contains a dichroic dye; and the visible light transmittance of the transparent electrode substrates is 89% or less, and the visible light reflectance of the transparent electrode substrates is 6.5% or more.

The invention provides a light emitting diode with improved brightness and a preparation method thereof, and belongs to the technical field of photoelectron manufacturing. The light-emitting diode comprises an epitaxial layer, a transparent conductive layer, a current blocking layer and a composite electrode, the transparent conducting layer and the current blocking layer are both located on the surface of the epitaxial layer, the transparent conducting layer covers the current blocking layer, and the transparent conducting layer is provided with a first through hole exposed out of the epitaxial layer; the composite electrode comprises a first metal layer and a second metal layer, the first metal layer is located in the first through hole and connected with the epitaxial layer, the second metal layer is located on the surface of the transparent conductive layer and in the first through hole, the second metal layer wraps the first metal layer, and the second metal layer is located on the surface of the transparent conductive layer and connected with the epitaxial layer. And the light reflectivity of the first metal layer is greater than that of the second metal layer. According to the embodiment of the invention, the problem that the light extraction efficiency of the light-emitting diode is affected due to light absorption of the electrode can be improved.

The utility model discloses optical detection equipment, which comprises an air floating platform and a measuring case, the measuring case comprises a measuring case upper part and a measuring case lower part, the measuring case upper part is arranged above the air floating platform, the measuring case lower part is arranged below the air floating platform, and the measuring case upper part is arranged above the air floating platform. A first light emitting mechanism and an integrating sphere are arranged in the upper part of the measuring case, a second light emitting mechanism and a spectrograph are arranged in the lower part of the measuring case, light emitted by the first light emitting mechanism and the second light emitting mechanism enters the integrating sphere, and the integrating sphere is connected with the spectrograph through an optical fiber. The utility model provides optical detection equipment which can be used for quickly measuring optical properties such as reflection spectrum, transmission spectrum, visible light reflectivity, visible light transmittance, photovoltaic reflectivity, photovoltaic transmittance, color parameters, film thickness and the like of a sample. During measurement, the sample does not need to be overturned or moved, so that the detection efficiency of the sample is greatly improved.

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

The application discloses an endoscope image electronic staining method, device, system and storage medium. The method extends an original wideband RGB image into a P-dimensional wideband image, and for each pixel point of a current frame: based on a current image block, a reference image block set is obtained by searching for reference image blocks in the current frame and K frames before and after the current frame; according to the similarity distance between each reference image block and the current image block, the image attenuation weight of each image block is determined, the image blocks are fused and weighted, and the RGB light reflectivity estimation data of the pixel point is obtained; based on the calibration matrix of the wideband image and the narrowband image, the narrowband light image signal data corresponding to the estimation data is obtained; based on the narrowband light image signal data of each pixel point, a narrowband image of the current frame is generated, and an electronic staining image is synthesized based on the narrowband image. The approximate imaging result of narrowband light illumination can be realized through software, so that better lesion observation effect is obtained at low cost.

The invention provides a steel surface phase-change intelligent temperature-adjusting water-based anti-corrosion and anti-rust paint as well as a preparation method, application and a construction method thereof, and belongs to the field of building materials. Reflection and radiation materials and phase-change materials such as nanometer aluminum oxide, nanometer silicon-based oxide, nanometer yttrium oxide, glass microspheres and nanometer vanadium dioxide are added into the steel surface phase-change intelligent temperature-adjusting water-based anti-corrosion and anti-rust paint disclosed by the invention; the hemispherical emissivity, the medium-brightness sunlight reflectance, the near-infrared light reflectance and the phase-change intelligent temperature-adjusting function of the phase-change intelligent temperature-adjusting water-based anti-corrosion and anti-rust paint on the steel surface are synergistically enhanced; by adding the derusting agent, the anti-flash-rust agent, the multifunctional anti-rust powder, the zinc phosphate, the aluminum triphosphate and the mica powder, the anti-corrosion and anti-rust effects of the steel surface phase-change intelligent temperature-adjusting water-based anti-corrosion and anti-rust paint are improved. Results of the embodiment show that the steel surface phase-change intelligent temperature-adjusting water-based anti-corrosion and anti-rust paint is excellent in anti-corrosion and anti-rust effects.

Provided is a multilayer coating film comprising a colored coating film which is formed on an object to be coated and includes a white pigment and a black pigment, a brilliant coating film which is formed on the colored coating film and includes a bright material and a black pigment, and a clear coating film which is formed on the brilliant coating film, wherein the brightness L*45 based on the spectral reflectance obtained by receiving, at an angle of 45 degrees with respect to regular reflected light, light I45 radiated from an angle of 45 degrees with respect to the surface of the multilayer coating film is 1 or more and less than 40, the ratio (L*5 / L*45) of the brightness L*5 based on the spectral reflectance obtained by receiving the light I45 at an angle of 5 degrees with respect to the regular reflected light and the brightness L*45 based on the spectral reflectance obtained by receiving the light I45 at an angle of 45 degrees with respect to the regular reflection light is 4.0-10.0, and the occupancy of the bright material as viewed from the normal direction of the surface of the multilayer coating film is 30-80%.

A multilayer coating film comprising a colored coating film formed on an object to be coated and containing a white pigment and a black pigment, a glitter coating film formed on the colored coating film and containing a glitter material and a black pigment, and a clear coating film formed on the glitter coating film, wherein light I irradiated from an angle of 45 degrees with respect to the surface of the multilayer coating film 45 is the lightness L based on the spectral reflectance received at an angle of 45 degrees with respect to the specularly reflected light * 45 is greater than or equal to 1 and less than 40, and the light I 45 is the lightness L based on the spectral reflectance received at an angle of 5 degrees with respect to the specularly reflected light * 5 and the light I 45 is the lightness L based on the spectral reflectance received at an angle of 45 degrees with respect to the specularly reflected light * 45, and the ratio (L * 5 / L * 45) is greater than or equal to 4.0 and less than or equal to 10.0, and the occupancy rate of the glitter material as viewed from the normal direction of the surface of the multilayer coating film is greater than or equal to 30% and less than or equal to 80%. Multilayer coating film.