60results about How to "Improve reflectivity" patented technology

The application discloses a light-transmitting assembly, a camera module and an electronic device. The light-transmitting assembly comprises a light-transmitting base material, an ink layer and an anti-reflection film. The light-transmitting base material has an incident surface and an emitting surface. The ink layer is arranged on the circumferential edge of the incident surface and / or the circumferential edge of the emitting surface. The anti-reflection film is arranged on the ink layer, and the ink layer is located between the light-transmitting base material and the anti-reflection film.

This invention discloses a six-degree-of-freedom laser measurement system belonging to the field of precision measurement technology. It includes a laser source, a collimating and beam-expanding lens, three beam-splitting prisms, a reflector, a cross-shaped circular reflective target, two focusing lenses, three CCD cameras, and a telecentric lens. Based on the different degrees of freedom being measured, it is divided into a first optical system, a second optical system, and a third optical system. The first optical system uses the principle of oblique-shot laser triangulation to measure the displacement of the object along the Z-axis. The second optical system uses the principle of self-collimation to measure the rotation angles of the object along the X and Y axes. The third optical system uses the principle of visual imaging to measure the displacement of the object along the X and Y axes and the rotation angle along the Z-axis. This invention employs an optical path multiplexing mechanism, significantly reducing the number of components and achieving system miniaturization, integration, and low cost. The six degrees of freedom are measured independently, avoiding coupling relationships between them.

The present disclosure provides a high-temperature graphene electric heating plate capable of being used for traditional Chinese medicine moxibustion and a manufacturing method thereof. The high-temperature graphene electric heating plate utilizes the infrared rays generated by graphene at high temperature to cover the spectrum of moxa heat, adopts a high-temperature-resistant rigid substrate and a high-temperature-resistant protective layer to protect the high-temperature graphene electric heating film, and transfers graphene through an adhesive layer containing a dopant during preparation, thereby improving the transfer quality, high-temperature stability and yield of the graphene, and achieving the material requirements of traditional Chinese medicine moxibustion.

This invention discloses a reflective film for automotive applications and a display structure for eliminating ghosting, belonging to the field of automotive displays. It includes a first liquid crystal layer and a second liquid crystal layer. The first liquid crystal layer has a direction pointing in the same direction and a thickness of 1 / 4 waveplate. The second liquid crystal layer is a reflective layer with a spiral structure in the longitudinal direction. The first liquid crystal layer is bonded to the windshield. The reflective film reflects the light beam generated by the display device incident at Brewster's angle inside the vehicle, reducing the energy of the beam that causes ghosting and eliminating it. For natural light from outside the vehicle, it only reflects P-polarized light with a wavelength close to that of the display device, while allowing other wavelengths and polarization directions of natural light to pass through, giving the automotive reflective film both high reflectivity and high transmittance.

This invention belongs to the field of coating technology, specifically relating to a super-reflective photovoltaic enhancement coating, its preparation method, and its application. The coating raw materials include water-based acrylic resin, filler, titanium dioxide, dispersant, defoamer, and leveling agent; wherein the filler includes barium sulfate and / or core-shell particles, and the barium sulfate includes at least one of nano-sized barium sulfate, submicron-sized barium sulfate, micron-sized barium sulfate, and modified barium sulfate. The preparation method involves: adding the filler to deionized water, adding the dispersant, and dispersing; adding the water-based acrylic resin and stirring; adding titanium dioxide, defoamer, and leveling agent to adjust the fineness; adjusting the viscosity; and filtering to obtain the super-reflective photovoltaic enhancement coating. The coating is applied to photovoltaic modules. This invention's coating has the advantages of high reflectivity, full-band coverage, low cost, and stable performance.

This invention discloses a high-strength passive daytime radiation cooling film and its preparation method, belonging to the field of functional polymer materials and thermal management technology. The film has a bilayer composite structure, including an upper reflective layer and a lower emitting layer. This invention employs an integrated process of melt blending-lamination-biaxial stretching-induced phase separation-extraction pore-fixing. Through a process design of stretching followed by extraction and a hierarchical biaxial stretching strategy, it achieves highly oriented molecular chains to enhance mechanical properties while precisely constructing a multi-level structure with both nanopores and micropores. The resulting film exhibits an average reflectivity >93% in the solar radiation band (0.25–2.5 μm), an average emissivity >95% in the atmospheric window (8–14 μm), a thermal conductivity <0.1 W / (m·K), and a tensile strength >30 MPa. This invention solves the technical bottleneck of achieving high reflectivity, high emissivity, low thermal conductivity, and high strength simultaneously in radiation cooling materials, and can be widely applied in building energy conservation, outdoor equipment thermal management, and electronic device heat dissipation.

The application provides a physical constraint-based illumination adaptive spectral reflectance reconstruction system, an illumination adaptive spectral reflectance reconstruction framework (I-SRR) based on no known illumination, auxiliary hardware or multiple captures, which can accurately recover intrinsic spectral reflectance of a material from a single RGB image; a spectral imaging physical model is embedded into a deep unfolding framework, a differentiable optimization structure is constructed based on an alternating direction multiplier method (ADMM), a spectral formation and recovery process is implicitly integrated, a physically guided end-to-end learning is realized through deep unfolding optimization based on physical constraints; the application can realize robust reflectance recovery under unknown or complex illumination conditions, adaptively adjust features through a learned compensation mechanism, maintain consistent reconstruction accuracy in different color temperatures (4000K-11200K) and indoor and outdoor scenes, and realize robust reconstruction under dynamic illumination conditions.

This invention discloses a UV-resistant touchscreen and touch display module, relating to the field of [technology / industry]. It comprises a touchscreen body and a UV-resistant coating applied to the surface of the touchscreen body. The UV-resistant coating is composed of the following components in the indicated mass ratios: a high-refractive-index material H layer made of tantalum oxide, 25-35 parts; a low-refractive-index material L layer made of magnesium fluoride, 20-30 parts; UV-resistant additives, 5-15 parts; a film-forming resin, 25-35 parts; and functional additives, 5-10 parts. The UV-resistant additives include ultraviolet absorbers and ultraviolet shielding agents. This invention exhibits excellent UV resistance: by incorporating titanium dioxide nanoparticles and ultraviolet absorbers, it effectively absorbs and reflects ultraviolet rays, protecting the substrate from UV damage, while also preventing the effects of ultraviolet penetration on the human body.

This application relates to the field of LED light source technology, disclosing a bracket, a light-emitting component, and a lighting system. The bracket includes a bracket body and two polarity connectors. The bracket body has a receiving groove and two spaced-apart through grooves, the two through grooves being disposed on the bottom wall of the receiving groove. At least a portion of one polarity connector is received in one through groove, and both polarity connectors are at least partially exposed in the receiving groove. The portions of the two polarity connectors exposed in the receiving groove are configured to be soldered to an LED chip. The polarity connectors have recesses, at least a portion of the bracket body is received in the recesses, and the portion of the bracket body received in the recesses constitutes part of the bottom wall of the receiving groove. The bracket body is white. One of the bracket body and the polarity connectors is provided with a positioning post, and the other is provided with a positioning groove, the positioning post being inserted into the positioning groove. Through the above method, this application embodiment can improve the brightness of the light-emitting component.

The invention relates to the technical field of water-based radiation refrigeration coatings, and discloses a water-based radiation refrigeration coating composition and a preparation process thereof, the water-based radiation refrigeration coating composition comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 10 to 15 parts of a water-based substrate, 8 to 12 parts of a multi-effect cosolvent, 55 to 65 parts of radiation refrigeration functional filler, 10 to 20 parts of emulsion, 0.1 to 0.8 part of a hydrophobic auxiliary agent, 0.1 to 0.8 part of a wetting agent and 0.3 to 1 part of a thickening agent, and the multi-effect cosolvent is prepared from a dispersing agent, a defoaming agent and a first solvent; and the component B comprises the following raw materials in parts by weight: 65-75 parts of a curing agent and 25-35 parts of a second solvent. The water-based radiation refrigeration coating composition has good cooling performance, weather resistance and protection performance.

The invention relates to a strong-light-resistant PIN type laminated laser detector and a manufacturing method, and belongs to the field of photoelectric detector chips. The detector comprises two stacked sub-detectors, wherein the sub-detector I is arranged at the upper part and comprises a P + contact region I, an i absorption region I, an N + contact region I, an antireflection film, an electrode I, a dielectric layer I and an electrode II; the sub-detector II is arranged at the lower part and comprises a P + contact region II, an i absorption region II, an N + contact region II, a dielectric layer II and an electrode III; a filter film I is arranged on the sub-detector II; a bonding layer is arranged on the filter film I and is connected with the sub-detector I and the sub-detector II; the electrode II and the electrode III are provided with through holes so as to be interconnected with a peripheral circuit. The system has excellent strong sunlight interference resistance, and high fidelity of signal detection is ensured at the same time.

The application provides a large-view-field compact reflective projection objective lens, and belongs to the technical field of semiconductor manufacturing lithography. The projection objective lens system comprises six aspheric mirrors. After a light source irradiates a mask, the light source sequentially passes through a first mirror M1, a second mirror M2, an aperture, a third mirror M3, a fourth mirror M4, a fifth mirror M5 and a sixth mirror M6. The aperture is located between the second mirror M2 and the third mirror M3. Finally, the light source is imaged on a wafer surface, and the projection objective lens system realizes an image reduction ratio of 0.2. In the embodiment of the application, the light path does not have a light blocking phenomenon and the structure is compact. The main optical parameters are as follows: the numerical aperture on the image side is 0.2, the object field on the object side is 10mm, and the total length of the system is 1280mm.

The application discloses an ultrablack coating with wide-angle absorption and a preparation method and application thereof, and belongs to the technical field of ultrablack coatings and preparation thereof. The application solves the problem that the existing ultrablack coating cannot present extremely low scattering and high absorption under large-angle incident light. In the application, carbon black is used as an absorbent, a high-temperature-resistant silica sol solution is used as a binder, and a one-step sintering method is adopted to form a stable structure and construct an ultrablack coating with a forest-like light trap array structure. The forest-like array structure on the surface of the ultrablack coating significantly changes the refractive index of the coating surface, thereby reducing the surface optical reflection; the surface forest-like light trap structure is closely arranged, can make the light incident from each angle to reflect back and forth in the structure, and then maximally absorbs the incident light, realizes stable high light absorption under wide angles, makes the reflectivity of the ultrablack coating not obviously change with the angle of incident light, and improves the deep space exploration precision of a space optical system.

This invention relates to a copper-doped anhydrous guanine crystal sheet, its preparation method, and its application, belonging to the field of spectral camouflage and stealth materials. Specifically, it relates to a method for synthesizing copper-doped guanine crystals. In this invention, copper-doped chlorophyll is used as the functional molecule, and organic small molecule uric acid and high molecular weight polymer (P(VP-co-VA)) are used as additives to regulate the synthesis of green guanine microsheets that preferentially expose the (100) crystal facet with the optimal refractive index. The guanine crystal microsheets prepared by this invention have high reflectivity and specific visible light absorption in the 200-2500 nm range, while also having the effect of weakening polarized light. Embedding the pigment molecules into the crystal lattice achieves a good stabilizing effect on copper-doped chlorophyll, making it a novel camouflage material with high reflectivity and excellent stability.

This application relates to the field of optical thin film technology, and more particularly to a method and electronic device for optimizing the center wavelength of a brightness enhancement film based on a genetic algorithm. The method includes: obtaining preset environmental parameters and defining optimization variable parameters; based on the preset environmental parameters and optimization variable parameters, performing parametric inverse design on a multilayer film model using finite element simulation to obtain an objective function; based on the objective function, performing iterative simulation on the multilayer film model using a genetic algorithm, and optimizing using a fitness function during the iteration process until the optimization objective is met or the number of iterations reaches a preset number; obtaining the optimal solution after iteration, the optimal solution including the center wavelength combination and the number of film layers. This application can obtain precise optimization parameters to achieve optimal reflectivity performance of the multilayer film.

The invention relates to the technical field of liquid crystal display devices, in particular to a reflective liquid crystal display panel, a preparation method of the reflective liquid crystal display panel and a reflective liquid crystal display device. The reflective liquid crystal display panel comprises a first substrate, a liquid crystal layer and a second substrate which are sequentially laminated, the cholesterol type liquid crystal composition comprises nematic liquid crystal, a hydrophobic first chiral compound and a hydrophilic second chiral compound, and the optical rotation of the first chiral compound is opposite to that of the second chiral compound; a hydrophilic interface is formed on the side, facing the liquid crystal layer, of one of the first substrate and the second substrate. The limitation that the theoretical reflectivity of a single-optical-rotation cholesterol liquid crystal does not exceed 50% is broken through, and the overall reflectivity and the display brightness are improved. As the components with different optical activities are vertically layered in the same liquid crystal continuous phase instead of forming an independent double-layer structure by means of external attachment, no obvious independent mechanical interface exists between the layers, the light scattering loss can be reduced, and the optical coupling efficiency can be improved.

This application provides a method for processing an optical component with a light-reflecting cavity, comprising the steps of: processing a first coated component and a second coated component; processing two plates having the same reference surface on the same disc, positioning them using the reference surface, and processing the two plates respectively to obtain a third coated component and a fourth coated component; providing an assembly fixture to position the first coated component and the third coated component, fixing the bottom surface of the third coated component to the surface of the first coated component; positioning the second coated component using the assembly fixture, and bonding the surface of the second coated component to the third coated component and the fourth coated component. This method solves the problem that the processing of optical components in the prior art is difficult to achieve high-standard quality requirements.

The invention relates to an optical conduction assembly, a camera module and electronic equipment. The optical conduction assembly comprises: a first prism having a first light incident surface and a first light emergent surface; the second prism is provided with a second light-in surface and a second light-out surface, and the first light-out surface and the second light-in surface are opposite to each other and are arranged at an interval to form a first gap; at least part of light entering the first prism from the first light entering surface can sequentially pass through the first light exiting surface, the light passing part of the first gap and the second light entering surface to enter the second prism, and is emitted from the second light exiting surface; wherein the refractive index of a medium of a light passing part of the first gap is smaller than that of the first prism, and the first light emitting surface and the second light incident surface are inclined to the first light incident surface. According to the optical conduction assembly, the interface of the first prism and the first gap can reflect stray light, and the effect of reducing the stray light is achieved.

This utility model discloses an aluminum alloy sheet for use in screen backlight panels, comprising a main body, a heat dissipation layer, and a reflective layer. The main body includes a base layer, a buffer layer, a corrosion-resistant layer, and a wear-resistant layer. By covering the upper surface and outer peripheral sides of the main body with the heat dissipation layer, the heat dissipation performance of the product is effectively enhanced, improving product quality. This allows for rapid heat dissipation from the screen backlight module, ensuring stable screen performance, guaranteeing normal screen operation, and extending screen lifespan. Furthermore, by stacking the reflective layer on the upper surface of the heat dissipation layer, the reflectivity of light is effectively increased, screen brightness is improved, light efficiency is enhanced, and the user's visual experience is enhanced. The buffer layer, corrosion-resistant layer, and wear-resistant layer effectively enhance the product's buffering performance, corrosion resistance, and wear resistance, resulting in richer and more diverse functions to meet current needs.

The application relates to the technical field of optical films, in particular to a wavelength 190-230 nm metal dielectric enhanced reflection film and a preparation method thereof. The metal dielectric enhanced reflection film comprises a substrate, a main reflection layer and a plurality of dielectric enhancement layers. The main reflection layer is an Al layer. The dielectric enhancement layers are alternately stacked by MgF2 layers and Al2O3 layers. The number of dielectric enhancement layers is not more than 3. The physical thickness of the Al layer is 180+ / -2% nm. The physical thickness of the MgF2 layer is 26.43+ / -2% nm. The physical thickness of the Al2O3 layer is 36.65+ / -2% nm. In the MgF2 layer, the evaporation rate of MgF2 is 0.8+ / -0.1 nm / s. In the Al2O3 layer, the evaporation rate of Al2O3 is 0.5+ / -0.05 nm / s. The metal dielectric enhanced reflection film has stable high reflectivity in the 190-230 nm wavelength band, high compactness and firmness between the film layers, and good durability.

This utility model discloses a storage and preservation device for bamboo-joint ginseng, including a sealed box. A light-shielding layer is fixedly installed on the inner wall of the sealed box, and the box is divided into multiple inner cavities by at least one dividing layer. A drawer unit is slidably installed in each inner cavity, and the bottom of the drawer unit is provided with a wavy, hollowed-out elastic silicone mesh tray. The light-shielding layer is connected to the lower part of the dividing layer via a disassembly and assembly mechanism. This utility model offers upgraded physical protection: the hollowed-out structure of the wavy, elastic silicone mesh tray disperses the stress on the bamboo-joint ginseng nodes, resulting in a reduced fracture rate when the ginseng is subjected to a 500g load. The light-shielding layer is efficiently disassembled and assembled: the Y-shaped insertion groove and the inclined guide design of the limiting block shorten the replacement time of the light-shielding layer, and the elastic component automatically locks to prevent loosening.

The utility model discloses a precision adjusting structure of an intermediate infrared laser, which relates to the technical field of lasers and comprises a laser main body used for generating intermediate infrared laser; the cavity mirror assembly comprises a total reflection mirror arranged at one end of the laser device main body and an output reflection mirror arranged at the other end of the laser device main body, and a resonant cavity is formed between the total reflection mirror and the output reflection mirror so that the mid-infrared laser can be stably output; the adjusting assembly comprises a first adjusting part and a second adjusting part, the first adjusting part is connected with the output reflecting mirror to drive the output reflecting mirror to rotate, and the second adjusting part is connected with the total reflection mirror to drive the total reflection mirror to rotate; and the linkage assembly is arranged between the first adjusting part and the second adjusting part, so that the first adjusting part and the second adjusting part rotate synchronously. According to the technical scheme provided by the utility model, the problem that the existing intermediate infrared laser cannot meet the use requirements of different scenes is solved.

The present application relates to the technical field of micro computer tomography, and discloses a large-aperture parabolic single glass tube micro-CT system and a reconstruction method thereof, the system comprising an X-ray source, a straight-through X-ray shutter, a first lens supported by a lens support to move, a sample supported by a sample stage and an X-ray flat panel detector arranged in sequence along an optical axis; the first lens is a large-aperture parabolic glass tube lens of millimeter level, and the lens support is used for adjusting the angle, pitch and optical axis coaxiality of the first lens; an electric control platform controller is electrically connected with the lens support and the sample stage respectively, and a main control computer controls the sample stage to perform angle scanning, sub-pixel angle jitter sampling and multi-view field splicing scanning through the electric control platform controller. The present application adopts a large-aperture parabolic glass tube lens of millimeter level, and the quasi-parallel beam geometry after system regulation and control enables the micro-CT system to be compatible with parallel beam algorithm, and the image reconstruction quality of the original cone beam algorithm is retained and improved.

The present application relates to the field of paint technology, and discloses a black infrared transmission paint, a preparation method and application thereof. The black infrared transmission paint comprises a resin composition (including silicone-modified acrylic resin and polyester resin), a black pigment filler composition (including yellow pigment, blue pigment, red pigment, filler particles and solvent) and isocyanate curing agent; the silicone-modified acrylic resin is formed by hydrolysis and condensation reaction of trimethoxysilane (with self-closed isocyanate group) and vinyltriethoxysilane under catalyst and water to form an organic silicon material containing olefin and silicon hydroxyl, and then cross-linking reaction of the organic silicon material and acrylic resin under a free radical initiator. The paint can better wrap and fix the pigment, and has high infrared light transmission rate; the coating has good heat resistance stability and aging migration resistance; the obtained infrared reflective photovoltaic back plate has high infrared light reflectivity and long-term stability, and can ensure long-term stable growth of module power.

This invention discloses a blood culture detection system based on spectral reflectance technology, comprising: a culture container for culturing samples; a sensor for sensing the sample state and changing color according to changes in the sample state; a light signal acquisition component for projecting single-wavelength light onto the sensor and receiving the reflected light signal after reflection by the sensor; and a reading module for obtaining a reading result indicating whether the sample is infected based on the received reflected light signal; the light source is used to project at least two different colors of single-wavelength light onto the sensor. This invention also discloses an alarm method for the blood culture detection system based on spectral reflectance technology. The blood culture detection system and alarm method of this invention, based on spectral reflectance technology, improve the accuracy of positive rate readings by using different wavelength light sources for detection.

The invention relates to a strong sunlight resistant APD type laminated laser detector and a manufacturing method thereof, and belongs to the field of photoelectric detector chips. The detector comprises two stacked sub-detectors, the sub-detector I is arranged at the upper part, and the sub-detector II is arranged at the lower part; a filter film I is arranged on the sub-detector II; a bonding layer is arranged on the filter film I and is connected with the sub-detector I and the sub-detector II; the electrode II and the electrode III are provided with through holes so as to be interconnected with a peripheral circuit. The detector is packaged in a tube shell, a light window is arranged above the tube shell, a light filtering film II is arranged above the light window, and a light filtering film III is arranged below the light window. During packaging, the electrode II of the sub-detector I and the electrode III of the sub-detector II are in short circuit. Through optical and electrical design, sunlight currents generated by the two sub-detectors are mutually offset, and only laser signal currents are reserved.

The utility model provides a kind of engine cooling system, including engine, air inlet cover, air duct and heat exchanger, air duct is arranged between air inlet cover and heat exchanger, air duct is respectively communicated with the cold air inlet end of air inlet cover and heat exchanger, one end of engine is provided with fan, fan is set in air duct, the heat dissipation port of engine is communicated with the heat exchange air inlet of heat exchanger, at least one air guide channel and at least two first sound attenuation components are provided in air duct, first sound attenuation component is provided on the both sides of air guide channel, first sound attenuation component includes first air deflector and first sound attenuation cotton, first cavity is provided in first air deflector, a plurality of first perforations are set on the surface of first air deflector, first perforation is communicated with first cavity, and first sound attenuation cotton is set in first cavity;The utility model has the advantages of simple structure, high cooling efficiency and low noise.

This invention discloses a PUHD panoramic head-up display optical system with a high-reflectivity windshield. It includes an image source, from which light is projected onto the windshield. The windshield has a reflective film layer that enhances the light energy from the image source. It also has a black coating layer that enhances the contrast of the displayed image and absorbs light to prevent ghosting. The light emitted from the image source is reflected by the windshield and enters the human eye. The human eye perceives a virtual image located on a virtual image surface in front of the windshield. The windshield, the black coating layer, and the reflective film layer constitute a high-reflectivity windshield structure. This invention improves the reflectivity of the windshield display area by setting a reflective film layer in the black display area of ​​the black coating layer. This windshield can reflect more than 30% of the light energy from the backlight module screen (reflectivity is adjustable), increasing the brightness to the eye and significantly reducing the brightness, backlight power, and cost of the backlight module.

This invention discloses a narrowband reflector waveguide and reflector based on a side-coupled Bragg grating resonant cavity, relating to the field of optoelectronics. It includes a main waveguide and a resonant cavity waveguide arranged in parallel. The main waveguide supports TE0 mode transmission, while the resonant cavity waveguide supports both TE0 and TE1 mode transmission. The main waveguide and the resonant cavity waveguide form an asymmetric directional coupling region through side coupling. A first resonant mode and a second resonant mode are formed within the resonant cavity waveguide. A TE0 mode optical signal is input to the main waveguide and coupled to the resonant cavity waveguide, where it is converted into a TE1 mode optical signal. Under the synergistic effect of the first and second resonant modes, the TE1 mode optical signal generates narrowband reflected light of the desired wavelength in TE1 mode. This TE1 mode narrowband reflected light is coupled back to the main waveguide and converted into TE0 mode narrowband reflected light, which is then output from the main waveguide. This narrowband reflector exhibits high reflectivity, narrow linewidth, high side-mode suppression ratio, and good process robustness.