74 results about "Iridescence" patented technology

A solar-control glass that has acceptable visible light transmission, absorbs near infrared wavelength light (NIR) and reflects midrange infrared light (low emissivity mid IR) along with a preselected color within the visible light spectrum for reflected light is provided. Also provided is a method of producing the improved, coated, solar-controlled glass. The improved glass has a solar energy (NIR) absorbing layer comprising tin oxide having a dopant such as antimony and a low emissivity control layer (low emissivity) capable of reflecting midrange infrared light and comprising tin oxide having fluorine and / or phosphorus dopant. A separate iridescence color suppressing layer as described in the prior art is generally not needed to achieve a neutral (colorless) appearance for the coated glass, however an iridescence suppressing layer or other layers may be combined with the two layer assemblage provided by the present invention. If desired, multiple solar control and / or multiple low emissivity layers can be utilized. The NIR layer and the low emissivity layer can be separate portions of a single tin oxide film since both layers are composed of doped tin oxide. A method of producing the coated solar control glass is also provided.

A solar-control glass that has acceptable visible light transmission, absorbs near infrared wavelength light (NIR) and reflects midrange infrared light (low emissivity mid IR) along with a preselected color within the visible light spectrum for reflected light is provided. Also provided is a method of producing the improved, coated, solar-controlled glass. The improved glass has a solar energy (NIR) absorbing layer comprising tin oxide having a dopant such as antimony and a low emissivity control layer (low emissivity) capable of reflecting midrange infrared light and comprising tin oxide having fluorine and / or phosphorus dopant. A separate iridescence color suppressing layer as described in the prior art is generally not needed to achieve a neutral (colorless) appearance for the coated glass, however an iridescence suppressing layer or other layers may be combined with the two layer assemblage provided by the present invention. If desired, multiple solar control and / or multiple low emissivity layers can be utilized. The NIR layer and the low emissivity layer can be separate portions of a single tin oxide film since both layers are composed of doped tin oxide. A method of producing the coated solar control glass is also provided.

A laminated glass unit having at least two sheets of glass separated and bonded by a polymeric interlayer material, and further having multi-layer thin film coatings on each of the unbonded surfaces of the at least two glass sheets, is disclosed. Two or more of such laminated glass units can be utilized in various configurations to form an insulated glass unit. The thin films deposited on the unbonded glass surfaces have anti-reflective, iridescence-suppressing and solar control properties when suitable configurations, materials and layer thicknesses are chosen. The laminated glass unit and insulated glass units of the invention exhibit an excellent combination of low visible light reflectance and thermal insulating properties.

A new method to produce solid nanocrystalline cellulose (NCC) films containing patterns by differential heating of aqueous suspensions of NCC has been discovered. When acid-form NCC suspensions are dried by heating to temperatures above 50° C., darkening of the NCC can occur, while neutral forms of NCC can produce iridescent chiral nematic films by heating to temperatures up to 105° C. Placing materials of different thermal conductivity beneath the container containing an evaporating NCC suspension results in watermark-like patterns of different iridescent color imprinted within the film structure. Other colloidal rod-like particles can be employed in place of nanocrystalline cellulose (NCC), for example chitin or chitosan.

A new method to control the iridescence colour of solid nanocrystalline cellulose (NCC) films by ultrasound and high-shear (mechanical) energy input to the NCC suspension prior to film formation is provided. As the energy input to the NCC suspension increases, the resulting film colour shifts from the ultraviolet region towards the infrared region of the electromagnetic spectrum; this wavelength shift lies in the opposite direction to that caused by the addition of electrolytes to NCC suspensions prior to film formation. No additives are required to achieve the changes in colour; colour changes can also be effected by mixing two suspensions exposed to different levels of sonication.

An optical film including a transparent polymer film (b) and a birefringent layer (a) formed of a polymer and laminated above the transparent polymer film (b) is provided. The birefringent layer (a) and the transparent polymer film (b) satisfy the following formula (1), the birefringent layer (a) satisfies the following formulae (2) and (3), and the polymer forming the birefringent layer (a) has a weight-average molecular weight in the range between 10,000 and 400,000 inclusive. Δn(a)>Δn(b)×10  (1) 1<(nx−nz) / (nx−ny)  (2) 0.0005≦Δn(a)≦0.5  (3) This optical film can prevent the occurrence of iridescence, the occurrence of cracks, and the occurrence of variation in retardation.

A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection of approx. 100 to 1000 h in the salt spray test according to DIN 50021 SS or ASTM B 117-73 until first attack according to DIN 50961 Chapter 10; being clear, transparent and substantially colorless and presenting multi-colored iridescence; having a layer thickness of approx. 100 nm to 1000 nm; and being hard, adhering well and being resistant to wiping.

A heat transferable material includes a heat transferable polymeric binder and a light stabilizer that is an N-oxyl radical derived from a hindered amine, the N-oxyl radical having the following formula,wherein R1, R2, R5, and R6 are each independently selected from a straight or branched C1-C6 alkyl, and R3 and R4 are each independently selected from H, OH, OR, COOH, or COOR, wherein R is a straight or branched C1-C6 alkyl or alkene, and having a molecular weight of 600 or less, is described. The heat transferable material can be in one or more sections or patches on a thermal donor element to provide a protective overcoat material. Optionally, a patch in the donor element can also include a dye. The heat transferable material provides better image stability and improved iridescence when applied to a thermal, inkjet, electophotographic, or silver halide receiver.

A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection of approx. 100 to 1000 h in the salt spray test according to DIN 50021 SS or ASTM B 117-73 until first attack according to DIN 50961 Chapter 10; being clear, transparent and substantially colorless and presenting multi colored iridescence; having a layer thickness of approx. 100 nm to 1000 nm; and being hard, adhering well and being resistant to wiping.

A method and a medium for laser imaging is herein disclosed. The medium incorporates one or more types of microstructures having a predetermined heat or radiation modifiable optical characteristic such as color, scattering, diffusion, diffraction, interference and iridescence. Associated intimately with the microstructures is a radiation antenna that acts to absorb radiation from a radiation source. The radiation antenna and source are attuned to one another to efficiently transfer energy therebetween and subsequently to the microstructures; this transfer of energy results in the modification of an optical characteristic of the microstructures to form an image on the medium. The medium has one or more layers that may include both the radiation antenna and the microstructures. Alternatively, the microstructures and radiation antenna may be included in separate layers. Coatings that incorporate one or more layers that include distinct microstructures and radiation antennae are also contemplated.

A light weight electrochromic dimmable mirror stack (300, 600) is presented that is composed only of solid-state layers (315, 615) with a total thickness of less than 50 micron and a reflector (310, 610). Normally such a kind of layered device suffers from iridescence due to interference of light waves reflecting at the interfaces between the layers of the electrochromic device. The solution provided by the invention is to pattern at least one of the layers (315, 615) in the device such that the interference effects are smeared out and a more neutral color is obtained. Various possible configurations are described and also the method to produce such a device.

Flexible nanocrystalline cellulose films (NCC) include a polymer while retaining the property of tunable colour. Polymers, for example PVOH and SB-latex, are effective in increasing the flexibility of the NCC films. The NCC film made with PVOH retains the iridescence better than that made with SB-latex; however, the NCC film made with SB-latex has a better tensile strength. in addition, the NCC film made with PVOH was found to disperse easily in water while the NCC film made with SB latex does not disperse in water (it is strongly water resistant). The colour of NCC film made with PVOH and SB-latex can still be tuned with techniques that provide for tuning.

A magnetic display device comprising a pair of flat-sheet display members formed of a non-magnetic material having transparency at least on its display surface, and a dispersion medium and magnetic particles held between the flat-sheet display members, wherein the display surface of the flat-sheet display member has luster.The magnetic display device has a high decorative effect, which can impart luster such as iridescent luster, iridescence and hologram appearance to images formed.

An iridescent vehicle badge (and methods for making it) that includes a translucent, polymeric badge having a non-planar shape and comprising an interior and an exterior surface. Further, at least one of the surfaces of the badge comprises a plurality of diffraction gratings that are integral with the badge, each having a thickness from 250 nm to 1000 nm and a varying period from 50 nm to 5 microns. In some cases, the thickness can range from 500 nm to 750 nm. The period, in some cases, can vary within a set of discrete values in one or more portions of the at least one of the surfaces of the badge, e.g., from 150 nm to 400 nm.

The invention relates to an essentially transparent glazing including an assembly of thin layers deposited in a vacuum with a magnetron, and having sun-proof and / or low-emission properties, wherein the surface protection layer comprises a layer containing titanium oxide and at least one other high-hardness metal oxide selected from the group including ZrO2, SiO2, Cr2O3. The glazing of the present invention is capable of withstanding a thermal treatment at 550 DEG C for 5 minutes without generating optical defects such as discolouring or iridescence. These glazings are hardenable.

The invention belongs to the field of porcelain product and relates to Dehua pearl white porcelain and a preparation technology thereof. The prepared Dehua pearl white porcelain comprises a pearl white porcelain body and pearl white glaze. The glaze surface of the prepared Dehua pearl white porcelain has milk white pearly luster, and has the artistic effect closest to that of traditional Dehua pearl white porcelain. Through detection of the glaze surface of the prepared Dehua pearl white porcelain, the refractive index of the surface of the pearl white porcelain is 1.4-1.5, the glaze surface is capable of reflecting light energy into milk white light, the light is abundant, changeable and not dull, and delicate changeable iridescence can be seen through angle transformation; the glaze surface of the Dehua pearl white porcelain is relatively thick, so that the pearl glossiness of the glaze surface can be more obvious and the thick feeling of the porcelain body can be increased; and in addition, the pearl white porcelain has good shielding property on the body and is capable of properly reducing the quality and the content of kaolin in the raw materials of the body, and the kaolin is replaced with low-price bentonite, so that the production cost is reduced.

The invention discloses a characterization and detection method of native-surface laser paper color characteristics. CIELab color values of a native-surface laser paper sample are measured by use of geometrical conditions of diffusion light illumination and near-surface normal-direction light reception, wherein C * and hab value are used for evaluation of basic color characteristics of native-surface laser paper. A linear uniform white light source is used to irradiate the native-surface laser paper sample from light source line length direction along one side length direction of a square grating of the native-surface laser paper sample, and a linear pixel array light receiver receives reflected light of the sample on the sample surface in the normal direction parallel to the linear light source; reflected light information of all tiny surface elements on a certain area of the sample is obtained; the reflected light information is converted into CIELab color information for evaluation of color characteristics of iridescence of the native-surface laser paper; and color fluctuation factors are used for characterization of granular sensation of color on the sample surface. The method is simple, fast, and suitable for color quality control application of the native-surface laser paper and printing colors thereof.

The invention relates to a preparation method of a cellulose nanocrystal iridescent anti-counterfeiting mark. The preparation method comprises the following processing steps: 1. preparing nanocrystal suspension with microcrystalline cellulose; 2. preparing an iridescent solid thin film; 3. preparing an iridescent anti-counterfeiting mark. The prepared iridescent solid thin film has a cholesteric liquid crystal phase structure and has selective reflectivity toward light waves. The prepared iridescent solid thin film can obtain colorful patterns under a polarizing microscope. The iridescent anti-counterfeiting mark prepared by utilizing the patterns has unduplicatedness and has application value in the package anti-counterfeiting field.

Method of designing a security thread in security documents with better color contrast at any viewing angle is claimed. The invention discloses designing of security thread in security documents like bank notes using subwavelength gratings with period and thickness less than the wavelength of light. The sub wavelength gratings preferably asymmetric are designed such that the Oth order reflections are of longer wavelength (red) and the higher order reflections (diffracted orders) are of shorter wavelengths (blue / green). The security thread so designed gives better color contrast unlike the rainbow colors of prior art thus allowing better and easier distinction of authentic documents.

The invention relates to a method for cultivating iridescence fresh water pearls. The method comprise the steps that (1) abalones or mussels are selected, mantles of the abalones or mussels are taken down, the mantles are sterilized, purified and cut into small slices, and the small slices are soaked and anaesthetized; (2) fresh water mussels are selected, the small slices are inserted into connective tissue of mantles of the fresh water mussels; (3) the fresh water mussels with the slices implanted are firstly placed in a clean water pond to recuperate, anti-rejection drugs are added to the clean water pond, oxygen circulation is conducted at the same time, and the fresh water mussels are transferred to a fresh water aquiculture area 7-14 days later. By the adoption of the method for cultivating the iridescence fresh water pearls, the abalones and the mussels are respectively combined with the fresh water mussels so that the iridescence fresh water pearls can be cultivated, the nacre of the abalones and the mussels are fully utilized, and the pearls with a better quality is provided for people. In addition, due to the facts that Chinese fresh water mussels are high in rate of survival and the freshwater aquaculture field is wide, the iridescence pearls can be produced in a large-scale mode by means of the method that the abalones and the mussels are respectively combined with the fresh water mussels, and the method for cultivating the iridescence fresh water pearls is also a new breakthrough of the Chinese pearl culture field.

The invention belongs to the field of graph carriers for information storage and transmission and especially relates to a two-dimensional code with multiple anti-counterfeiting features. At least part of a graph layer of the two-dimensional code comprises a photonic crystal material layer. The reflection spectrum of photonic crystal forbidden band light is a single band spectrum and its feature is distinguished so that it is impossible to duplicate the spectrum with common color paints, and therefore the photonic crystal material is quite suitable for expert anti-counterfeiting of instrument detection. Further, the reflection spectrum is bright in color, has high saturation, and has iridescence effect which is visible to naked eye and is angle-dependently changeable so that the photonic crystal material can also be applied for common anti-counterfeiting and technical anti-counterfeiting. Therefore, the security of the two-dimensional code is increased and the two-dimensional code has multiple anti-counterfeiting features so that it can be applied in common anti-counterfeiting, technical anti-counterfeiting and expert anti-counterfeiting.

The invention relates to an environmentally-friendly electrogalvanizing passivation solution, and belongs to the technical field of metal material surface treatment. The passivation solution comprises 20-30 g / L of sodium silicate, 10-20 ml / L of hydrogen peroxide, 20-30 g / L of zinc nitrate, 6-10 g / L of sodium fluoride, 9-15 g / L of copper sulfate, 3-5 ml / L of sulfuric acid and the balance of water; the pH value of the passivation solution is 2.5-3. The environmentally-friendly electrogalvanizing passivation solution completely meets the environmental protection standards such as China electroplating wastewater discharge standards and European Union RoHS (Restriction of the use of certain Hazardous Substances). The appearance of a galvanized coating treated by using the passivation solution is a uniform iridescence passivating film; the neutral salt spray test shows that the occurrence time of white rust exceeds 72 hours.