72 results about "Optical contrast" patented technology

Embodiments described include adhesive bus bars for electrochromic or other optical state changing devices. The bus bars are configured to color match and / or provide minimal optical contrast with their surrounding environment in the optical device, provide better adhesion than ink based bus bars, as well as obviate the need to mitigate defects in underlaying layers.

The invention provides a high-performance electrochromic compound capable of realizing switching between a blue system and a transparent state by adjusting the proportion of a polymer receptor and a preparation method of the high-performance electrochromic compound. The electrochromic film prepared on the basis of the compound shows a blue system in a neutral state, and the color is switched to a transparent state along with the increase of external voltage. The optical contrast of the electrochromic compound in the wavelength range of 642 nm is 52.65%, the coloring time is 0.65 s, and the fading time is 0.32 s. The optical contrast ratio of the electrochromic film can keep 95.29% of the initial contrast ratio after 1000 cycles under the step voltage of 0V and 1.0 V. The electrochromic film is a solution-processable electrochromic material which has excellent performance and can be switched between blue and transparent colors.

The invention provides an image enhancement method and system for intelligent image processing, and the method comprises the steps: obtaining original image data in a low-light environment, and the original image data comprises gray level distribution data; performing adaptive histogram equalization processing on the gray level distribution data to generate equalized image data; calculating a cumulative distribution function based on the occurrence frequency of each gray level in the equalized image data; enhancing the optical contrast of the edge region in the equalized image data based on the calculation result of the cumulative distribution function to form enhanced image data; and performing noise reduction processing on the enhanced image data by using a joint noise reduction algorithm, and performing motion compensation on the enhanced image data after noise reduction processing to generate target image data. According to the invention, the dynamic range expansion capability and the noise suppression effect of the image in the low-light environment are improved.

The invention discloses a method for identifying a bad plate in a substrate, belongs to the technical field, and realizes high fusion of bad plate identification and a production process through a precise marking process and a dynamic data collaboration mechanism. A high-energy laser carbonization technology is adopted, an irreversible permanent mark is formed on the surface of a substrate, and a microscopic carbonized layer structure and a base material form remarkable optical contrast. The mark can still keep stable gray scale characteristics under strong light irradiation, and the problem of misrecognition caused by the fact that a traditional ink mark is prone to falling off and pollution is solved. Meanwhile, the closed-loop control of laser parameters ensures that the marking area is only modified within the depth of 0.1 mm of the surface layer, substrate warping or inner layer circuit damage caused by diffusion of a heat affected zone is avoided, and the reliability and safety of marking of the damaged plate are guaranteed from the physical level.

Some implementations herein provide a semiconductor substrate including a multi-layer alignment mark structure and methods of formation. The multi-layer alignment mark structure may include concentric rings (e.g., a multi-ring bond mark structure) and a dummy pad structure below the concentric rings. For a light source of a given wavelength, the dummy pad structure may create an optical contrast between the concentric rings and annular regions of a dielectric region in which the concentric rings are formed. The optical contrast may improve a detectability of the multi-layer alignment mark structure by an automated optical inspection system relative to another alignment mark structure not including the dummy pad structure. The improved detectability, may in turn, reduce an amount of recognition errors by the automated optical inspection system detecting the multi-layer alignment mark structure to improve an efficiency of a semiconductor processing tool including the automated optical inspection system.

The invention relates to the technical field of semiconductor product preparation, in particular to a total-reflection binary photomask and a pattern transfer method.The total-reflection binary photomask comprises a transparent substrate, an optical layer is arranged on one side of the transparent substrate, a light incidence prism is attached to the other side of the transparent substrate, and optical patterns are processed on the optical layer through an etching technology; the light receiving surface of the incident prism is perpendicular to the direction of the light source and enables the light source to be transmitted to the optical layer at an incident angle alpha, and the optical layer enables incident light with the incident angle alpha to be totally reflected; different from a traditional photomask with a multi-layer stacked structure, the photomask has the advantages that only one optical layer needs to be arranged, and the uniformity and the precision of etched patterns can be effectively guaranteed; through total reflection of the optical layer, penetrating light is avoided, and the optical contrast of the photomask in use is guaranteed; the light source irradiates on the optical layer at a certain angle, and compared with a traditional mode that the light source vertically irradiates on the optical layer, the pattern on the optical layer can be recorded on the wafer in a shrunk mode when pattern information is transferred.

This invention relates to a method for preparing and applying polyamides from a monomer containing 7-methyldibenzo[c,g]carbazole and triphenylamine: 4-({9-[(4-aminophenyl)(4-methoxyphenyl)amino]-7-methyldibenzo[c,g]carbazole-5-yl}(4-methoxyphenyl)amino)aniline. To address the problems of low solubility, difficulty in film formation, poor cycling stability, narrow color change range, and limited functionality in polyamide materials, this invention constructs two triphenylamine groups on 7-methyldibenzo[c,g]carbazole and introduces a methoxy group onto the triphenylamine to increase the polymer's solubility and stability. The polymer of this invention exhibits excellent electrochromic properties, including excellent cycling stability, fast switching time, and high optical contrast. Furthermore, to address the material's multifunctionality, a naphthalene unit is added to the molecular structure, resulting in a polymer with fluorescent emission. This invention can be applied to displays, rearview mirrors, camouflage applications, and the fluorescence detection of p-trinitrophenol.

The invention discloses multicolor optical anti-counterfeiting alumite and a production process thereof. The alumite sequentially comprises a magnetic-sensitive enhanced substrate layer, a dynamic separation layer, a temperature-magnetic composite nanofiber multicolor layer, a polyelectrolyte alternate deposition barrier layer and a gradient magnetic-sensitive aluminized layer from bottom to top, wherein the magnetic-sensitive enhanced substrate layer, the dynamic separation layer, the temperature-magnetic composite nanofiber multicolor layer, the polyelectrolyte alternate deposition barrier layer and the gradient magnetic-sensitive aluminized layer are arranged on the alumite; wherein the magnetic-sensitive enhanced substrate layer comprises a graphene modified PET supporting layer and a three-dimensional net-shaped micro-channel embedded with Fe3O4 particles, the dynamic separation layer is temperature-sensitive phase change fluororesin, the temperature-magnetic composite nanofiber colorful layer is electrostatic spinning nanofibers of a core-sheath structure, and the blocking layer is of a polyelectrolyte alternate deposition structure and is embedded with infrared invisible identification particles. According to the invention, four anti-counterfeiting functions of multicolor optical response, magnetic response activation and infrared invisible two-dimensional codes are integrated, the advantages of high multicolor optical contrast, fast response, multiple reuse times, excellent barrier performance, stable transfer printing and the like are achieved, the method is suitable for scenes of high-end tobacco and wine, luxury packaging, high-added-value labels and the like, and the anti-counterfeiting grade and the practicability are obviously improved.

Hyperbranched polyamides containing methylpiperazine and polytriphenylamine structures, and preparation method and application thereof. The present application relates to a monomer containing methylpiperazine and triphenylamine core: N1, N1-bis(4-aminophenyl)-N4-(4-(bis(4-aminophenylamino)phenyl)4-(4-(4-methylpiperazine-1-yl)phenyl)phenyl-1,4-diamine, and a preparation method and application of hyperbranched polyamides. In order to solve the problems of low solubility in organic solvents, poor thermal stability, single color change, low optical contrast and poor electrochemical stability of triphenylamine-based polyamide materials, methylpiperazine electron-donating groups and multiple electroactive centers are introduced in the molecular design process, and hyperbranched polyamides are synthesized, which increase the color change ability and cycle stability of the polymer. The solubility of the hyperbranched polyamide is significantly improved, and at the same time, it has excellent electrochromic performance, including excellent cycle stability, multiple color changes and high optical contrast. The present application is applied to the fields of electrochromic display, sensing and photoelectric detection.

The invention relates to a plastic load carrier having an individual identifier which is optically readable, wherein the surface of the load carrier has a field which is generated by means of a hot-stamping process and which is in optical contrast to the load-carrier material, and wherein surface portions of the hot-stamped field are removed in such a way that these surface portions form an optical, machine-readable code. The invention also relates to a method for producing a load carrier of this kind.

The invention provides a solid material surface processing method which comprises the following steps: S1, arranging a conductive film layer on the surface of a solid material to obtain a semi-finished product A; s2, a groove is formed in the surface of the semi-finished product A with the ion beam current of 0.05-0.5 [mu] A through the focused ion beam technology, and a semi-finished product B is prepared; and S3, removing the conductive film layer on the surface of the semi-finished product B. According to the processing method for the surface of the solid material, the current of the ion beam can be accurately regulated and controlled, so that grooves with different depths are accurately formed in the surface of the solid material, and the bottoms of the grooves protrude towards the notch direction of the grooves. The surface of the finished product prepared by the processing method provided by the invention is provided with nanoscale grooves with different depths, the bottoms of the grooves protrude towards the notch direction of the grooves, and the protrusions at the bottoms of the grooves enable design patterns formed by the grooves to present higher definition and contrast through enhanced optical contrast characteristics, so that the product quality is improved. Good mechanical stability and damage resistance are realized.

The application belongs to the technical field of high-reflectivity extreme ultraviolet elements, and provides a LaNx / La / B4C extreme ultraviolet multilayer film mirror and a preparation method thereof.The LaNx / La / B4C extreme ultraviolet multilayer film mirror comprises a plurality of periodic LaNx / La / B4C layers which are stacked on a substrate; the plurality of periodic LaNx / La / B4C layers comprise a plurality of LaNx / La / B4C layers which are stacked; the LaNx / La / B4C layer comprises a LaNx layer, a La layer and a B4C layer which are stacked in sequence; and the LaNx layer in the LaNx / La / B4C layer is in contact with the substrate. The La layer is introduced between the B4C layer and the LaNx layer to reduce the interaction between the LaNx and the B4C, thereby reducing the interface diffusion to enhance the optical contrast between the layers and improve the theoretical reflectivity of the LaNx / La / B4C extreme ultraviolet multilayer film mirror.

The present invention belongs to the technical field of electrochromic materials, and provides an electrochromic polymer, a preparation method and application thereof, and a high-performance magenta-transparent electrochromic film. The present invention uses cyclopentathiophene as the D unit and 1,4-dialkoxybenzene as the π unit, prepares an electrochromic polymer by Suzuki reaction, and successfully prepares a high-performance magenta-transparent electrochromic film by spin coating. The film prepared by the present invention exhibits magenta in a neutral state (0V) and is transparent in an oxidized state (1.1V), and has an optical contrast of 56.4% at a wavelength of 532nm, a coloring time of 0.7s, a fading time of 0.6s, and a contrast retention of 84.3% after 1000 cycles. It is a new type of high-performance soluble magenta-transparent electrochromic material with great potential.

The invention relates to the field of electrochromism, and discloses an electrochromism material, an electrochromism device and application of the electrochromism material and the electrochromism device. The electrochromic material is prepared from a copolymer of arylamine and thiophene monomers, and the electrochromic material which is transparent in a neutral state, colored in a doped state and high in optical contrast ratio is achieved by adjusting the positions and types of substituent groups on the arylamine and the thiophene monomers. When the electrochromic material is in a neutral state, the absorption initial wavelength is smaller than or equal to 480 nm, preferably smaller than or equal to 420 nm, the bright-state transmittance under visible light is larger than or equal to 60%, and the electrochromic material is in a transparent state and even colorless; and light absorption in different wavelength ranges can be realized in a doping state (oxidation state), so that various dark-state colors such as purple, red, brown, blue and black can be realized. And the dark state (doped state) transmittance under visible light is less than or equal to 15%, so that high optical contrast can be realized, the optical contrast is greater than or equal to 50%, and the requirements of the fields of intelligent automobiles, 3C and the like on a wider color change range are met.

The present invention provides a yellow-transparent electrochromic polymer, its preparation method, and its application, belonging to the technical field of electrochromic materials. The present invention incorporates an electrochromic polymer represented by formula (I) into an electrochromic polymer film. The resulting electrochromic polymer film can reversibly switch from yellow to transparent under different voltage windows, with an optical contrast ratio of 5.82% at a wavelength of 640nm. In its neutral state, the film exhibits a pure yellow color with almost no residual absorption. The film maintains high transmittance throughout the color change process, and is expected to find application in display fields such as electronic paper and electronic tags.

This invention relates to the field of integrated circuit packaging substrate manufacturing technology, specifically to an automated reading method for laser drilling target identification based on transient optical contrast. The method includes: laser windowing to expose the underlying target pattern; integrating a cleaning device on the spindle of the laser drilling equipment to apply a volatile cleaning liquid to the target surface, utilizing the inherent microscopic height difference between the target pattern and the gap between the patterns to form a gradient liquid film; controlling the waiting time after cleaning, utilizing the difference in evaporation rate of the liquid film in the raised and recessed areas to form transient optical contrast, which the laser equipment uses to identify the target boundary; and establishing a processing coordinate system based on the grasped target for laser drilling. This invention provides an automated reading method for laser drilling target identification based on transient optical contrast, solving the target identification problem caused by the copper structure background and similar reflectivity of the target pattern, achieving full automation of target reading, and improving reading success rate, equipment utilization rate, production efficiency, and yield stability.

This invention provides a cyan-transparent electrochromic polymer, its preparation method, and its applications, belonging to the field of electrochromic polymer technology. The invention uses 6,6'-(2,6-dibromo-4H-cyclopentano[2,1-b:3,4-b']dithiophene-4,4-diyl)bis(hexyl-1-ol), 2,6-di(trimethyltin)-4,4-di(2-ethylhexyl)-dithiophenecyclopentadiene, and 4,7-dibromobenzo[c][1,2,5]thiadiazole as main raw materials, reacting them under the action of a catalyst to obtain a cyan-transparent electrochromic polymer. The film made from the cyan-transparent electrochromic polymer of this invention has an optical contrast ratio of 47.01% in the 719 nm wavelength range, a coloring time of 0.81 s, and a fading time of 0.32 s.

A method for imaging tissue is provided. The method includes illuminating a target tissue via a light-emitting diode. The method further includes acquiring a plurality of timed images of the target tissue including an excitation image corresponding to an excitation state of the light-emitting. Additionally, the method includes generating a relative lifetime map of the target tissue based on the plurality of timed images.

This application relates to the field of electrochromic materials technology, and discloses a polymeric electrochromic material and its application in anti-glare rearview mirrors. The polymeric electrochromic material is formed by in-situ polymerization and curing under ultraviolet light of a solvent, a polyurethane prepolymer with terminal double bonds, a violet derivative containing double bonds, a complementary electrochromic material, and a photoinitiator. The violet derivative containing double bonds is covalently anchored to the three-dimensional polymeric gel network framework formed by the crosslinking of the polyurethane prepolymer with terminal double bonds. This invention restricts the directional migration of the chromogenic groups through chemical bonding, effectively solving the problems of easy leakage and delamination during long-term operation of traditional devices. Simultaneously, the use of polyether soft segments to construct ion channels ensures that the device has a second-level response speed and high optical contrast. The material has a simple preparation process, good weather resistance, and is particularly suitable for automotive anti-glare rearview mirrors.

The invention relates to a plastic load carrier having an individual identifier which is optically readable, wherein the surface of the load carrier has a field which is generated by means of a hot-stamping process and which is in optical contrast to the load-carrier material, and wherein surface portions of the hot-stamped field are removed in such a way that these surface portions form an optical, machine-readable code. The invention also relates to a method for producing a load carrier of this kind.

The invention discloses a connecting rod character and oil groove coplanar visual detection device, which relates to the technical field of workpiece defect detection and comprises a light source unit arranged above a workpiece detection path and an image acquisition unit arranged on the light source unit. Light is projected through the light source unit, an optical contrast signal of a bright / dark reflection area is generated on the surface of a workpiece, and characters or oil groove edge features can be clearly distinguished through images collected by the image collection unit. And then the processing unit executes cross-azimuth correlation analysis in a single to-be-detected image through a pre-stored standard template, and judges whether dark reflection region characteristics matched with the two-azimuth reference template exist or not, so as to quickly judge whether a coplanar defect exists in the workpiece or not. All the units of the whole device cooperate with one another, complex manual operation is not needed, the detection efficiency and accuracy are greatly improved, subjectivity and errors of manual detection are effectively avoided, the device is suitable for industrial batch detection scenes, and stable and reliable workpiece quality is ensured.

The invention discloses a method for improving the photoelectric property of a 3, 4-propylene dioxythiophene-based polymer through molecular weight change, and relates to an organic photoelectric material. By designing 3, 4-propylene dioxythiophene-based polymers based on different molecular weights and researching the changes of light, electricity, heat, force, morphology and the like, especially the electrochromic performance, the electrochromic optical contrast and coloring efficiency are improved, and the method is a novel electrochromic functional layer material screening method and has wide application prospects. The preparation method has important guiding significance on electrochromic application of the polymer.

The application belongs to the technical field of electrochromic devices, and particularly relates to a one-piece electrochromic device of silica gel and a preparation method thereof. The one-piece electrochromic device has a three-layer structure, which is a transparent conductive substrate, a color-changing gel and a transparent conductive substrate. The color-changing gel is a composite gel of silica gel and a metal oxygen cluster material, and by adding a suitable redox balancing species and an ionic liquid, the one-piece electrochromic device with high optical contrast and super-long cycle stability is obtained.

A head mounted display (HMD) device and an image-based guidance system are disclosed. The HMD has a sensor that images a scene as pixel data and a display that outputs a graphical user interface (GUI). The HMD has one or more parallel processing modules, each configured with a plurality of pixel-corresponding data processing threads that receive pixel data from the sensor, filter it to separate pixel data representative of an optical contrast agent applied to at least one target in the scene, and transmit the pixel data to the sensor. And calculate two-dimensional (2D) pixel coordinate data from the separated pixel data. A data processing component of the HMD transforms the 2D pixel coordinate data into three-dimensional (3D) coordinate data representative of the or each target relative to the device by referring to a first set of geometric data, generates 3D guidance data by referring to one or more further sets of geometric data, each set of geometric data representative of a respective target in the scene, and outputs the 3D guidance data to the GUI.

The invention discloses a PEDOT conductive polymer based on a ClO4 <-> and PF6 <-> doping system, and relates to an organic photoelectric material. According to the invention, based on different doping systems (ClO4 <-> and PF6 <->), the electrochemical performance, the electrochromic behavior, the thermal stability and the change of the surface appearance of poly (3, 4-ethylenedioxythiophene) (PEDOT) are researched. The electrochromic performance of PEDOT is improved through doping, and the method has important guiding significance on electrochromic application of the polymer. The invention discloses a preparation method for doping ClO4 <-> and PF into a polymer PEDOT (poly (3, 4-ethylenedioxythiophene)), the series of conductive polymers are doped by using different doping agents, so that the optical contrast and coloring efficiency of electrochromism are improved, and the conductive polymers are novel electrochromism functional layer materials.

To provide a new type of electrochromic polymer and a device using this polymer. [Solution] Electrochromic polymers are JPEG2026057544000090.jpg21170 (In the formula, MCL represents the meta-conjugated linker, and Ac represents the aromatic moiety) The disclosed electrochromic polymer has absorption initiation below 420 nm in the neutral state and absorption in the visible and / or near-infrared wavelengths in the oxidized state. Therefore, when used in an electrochromic device, the disclosed electrochromic polymer exhibits high transparency and high optical contrast.

The present invention provides a black-transparent electrochromic compound and its preparation method and application, which belongs to the field of electrochromic material technology. The following steps are included: under a protective atmosphere, 4,7-bis(3,3-dimethyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dioxopyran-6-yl)benzo[c][1,2,5]thiadiazole, 3,4-bis((2-ethylhexyl)oxy)thiophene, 2,6-dibromo-4,4-bis(2-ethylhexyl)-4H-cyclopentadien-[2,1-b:3,4-b']bithiophene, potassium carbonate, pivalic acid, Pd(OAc)2 and DMAc are mixed to obtain the black-transparent electrochromic compound. The film made of the compound is black in a neutral state and highly transparent in an oxidized state, with an optical contrast of 27% under a wavelength range of 600nm, a coloring time of 1s, and a fading time of 0.45s.

The invention discloses a double-cuprous complex and a preparation method and application thereof.The double-cuprous complex is specifically a binuclear cuprous complex which is formed by two cuprous ions, four N atoms of bitzH2 and P atoms on two POP and has two twisted tetrahedral configurations, solid powder of the complex emits blue light, and the double-cuprous complex can be used for preparing blue light. After mechanical grinding, blue fluorescence is converted into green fluorescence, and after a ground solid sample is fumigated by dichloromethane steam, blue light is recovered, so that the compound has a reversible force-induced color-changing property and also has high optical contrast; the characteristics of wide color gamut change range and high color vividness are beneficial to the preparation of high-contrast force sensing materials, and have huge application potential in the fields of force sensors, memories, anti-counterfeiting marks and the like.

The application discloses a kind of optical switch devices based on germanium antimony phase change material, the overall structure of the optical switch device is five layers, from bottom to top in turn is substrate, waveguide dielectric layer, waveguide protection layer, phase change layer and top protection layer.The material of the phase change layer of the optical switch device is germanium antimony phase change material, chemical formula is Ge x Sb 100‑x Wherein 10≤x≤30.The crystallization temperature of the germanium antimony phase change material is higher than 230 DEG C, and the amorphous thermal stability is good, and the optical constant difference between amorphous state and crystalline state is large, and the transmittance difference is more than 50%, and the optical contrast is high.

The application discloses a kind of optical satellite multi-star radiation reference correction and consistency evaluation method, using the field observation data of global radiation field network respectively to selected optical reference satellite, each optical contrast satellite is re-corrected, and the radiation reference of the optical reference satellite, each optical contrast satellite is corrected to the same level;After re-correcting, optical reference satellite and each optical contrast satellite are combined two by two, and the following operations are completed for each pair of combination: spatial matching and spectral matching factor matching are carried out, and star matching data set is obtained;The consistency evaluation coefficient of star matching data set is calculated, and the results of optical reference satellite and optical contrast satellite are evaluated.The application can accurately evaluate the consistency of multi-star radiation by optimizing the calibration difference of satellite itself when evaluating the consistency of optical satellite.