摘要:
An electrochromic variable reflectance mirror for a vehicle includes a reflector/electrode on the third surface of the mirror. This reflector/electrode forms an integral electrode in contact with the electrochromic media, and may be a single layer of a highly reflective material or may comprise a series of coatings. When a series of coatings is used for the reflector/electrode, there should be a base coating which bonds to the glass surface and resists any adverse interaction, e.g., corrosive action, with the constituents comprising the electrochromic media, an optional intermediate layer (or layers) which bonds well to the base coating and resists any adverse interaction with the electrochromic media, and at least one highly reflective layer which directly contacts the electrochromic media and which is chosen primarily for its high reflectance, stable behavior as an electrode, resistance to adverse interaction with the materials of the electrochromic media, resistance to atmospheric corrosion, resistance to electrical contact corrosion, the ability to adhere to the base or intermediate layer(s) (if present) and to the epoxy seal, and ease of cleaning. If a base layer is deposited it preferably covers the entire third surface; however, when this is done the highly reflective layer may optionally only coat the central portion of the third surface and not the perimeter edge portion. The third surface reflector/electrode provides of improved electrical interconnection techniques used to impart a voltage drive potential to a transparent conductor on the mirror's second surface.
摘要:
The present invention provides variable reflectance automobile mirrors wherein the component of variable transmittance is an electrochromic device wherein the medium of variable transmittance comprises an electrochromic compound in a gel or a thickened solution.
摘要:
The present invention concerns compositions, which comprise an aprotic polar solvent, at least one electrochromic compound, and a compound of the formula I ##STR1## wherein R.sub.1 is, for example, tert-butyl, and R.sub.2 is, for example, --CH.sub.2 --CH.sub.2 --COO--R.sub.7 --, where R.sub.7 is n-butyl or n-pentyl. Among embodiments of the invention are compositions used as media of variable transmittance in electrochromic devices, especially single-compartment, self-erasing, solution-phase electrochromic devices. The compounds of Formula I have increased solubility in aprotic polar solvents used in electrochromic devices and are effective in stabilizing compositions, which comprise at least one electrochromic compound and are useful as media of variable transmittance in electrochromic devices, against degradation due to exposure to UV-radiation. The compounds of Formula I further significantly assist in controlling the gel formation time of cross-linked polymer matrices, which comprise at least one electrochromic compound and are useful as media of variable transmittance in electrochromic devices.
摘要:
Electro optic devices incorporating an improved configuration of elements which dramatically reduces light scattering and haziness with relatively inexpensive coated glass. The devices are liquid or gel containing electro optic devices, such as an electrochromic automatic rearview mirror for automotive vehicles, which has for at least one of its walls a sheet of glass coated with a transparent conductive coating. The combination of the coated glass, which has a tendency to have an optically rough surface, and the liquid or gel electro optic material reduces the scattering of any incident light by wetting out the rough optical surface of the coated glass, thereby improving the optical quality. The coated glass scatters between 0.2 and 4.0% of visible white light prior to assembly into the device.
摘要:
Disclosed is a process for removing a halogenated aromatic compound (eg. a polychlorinated biphenyl or PCB) from a liquid carrier (eg. a transformer oil) contaminated therewith and for dehalogenating said removed halogenated aromatic compound. The process comprises mixing the contaminated carrier with a solvent for extracting halogenated aromatic compound from said carrier into said solvent and separating the contaminated solvent from the cleansed carrier. The contaminated solvent then is passed into an electrolytic cell for electrolytically dechlorinating said halogenated aromatic compound. The preferred cathode is mercury and the preferred anode is titanium coated with ruthenium dioxide. The cell additionally contains an electrolyte soluble in the solvent and a source of hydrogen ions (eg. HCl). The preferred solvent is a cyclic ester (eg. propylene carbonate). The equipment for practicing the process of the present invention conveniently can be set up in the field for treating PCB contaminated transformer oil in electrical transformers.
摘要:
An improved insulated glass unit is disclosed having an outboard pane with one or more than one dynamic layer, which may be a thermochromic layer, and an inboard pane with one or more than one switchable layer, which may be a liquid crystal containing layer. Between the panes is a gas space that is sealed around the perimeter of the unit. Preferably, at least one low-e coating is placed in contact with the sealed gas space. The simplicity of manufacture of the window unit and durability of the switchable component is dramatically increased by this invention.
摘要:
An energy efficient, thermochromic device that may be used to allow sunlight or solar radiation into a building or structure when sunlight is absent or at high sun angles and substantially blocks solar radiation when sunlight is directly on the window.
摘要:
Thermally reversible light scattering materials are provided in accordance with the invention including a low melting, polymeric material dispersed in a polymer matrix; a first polymer which upon heating from a temperature below its melting point to a temperature above its melting point changes from a light scattering solid to a liquid, the first polymer being dispersed in a matrix provided by a second polymer to form a light scattering polymer material when cold and a less or non-light scattering material when hot; and thermally reversible light scattering materials which go from light scattering at lower temperatures to less or non-light scattering at higher temperatures. The thermally reversible light scattering materials of the invention can be incorporated in many applications including a window which can reversibly change from a privacy condition to a non-privacy or clear condition; a window which can reversibly change between displaying images or objects to obscuring images or objects; a layer which can reversibly change between being clear and frosted by cycling the temperature of the layer; a reversible display; a temperature indicating material or device.
摘要:
An electrochromic mirror is disclosed for use in a vehicle rearview mirror assembly having a light source positioned behind the electrochromic mirror for selectively projecting light through the mirror. The electrochromic mirror includes front and rear spaced elements each having front and rear surfaces and being sealably bonded together in a spaced-apart relationship to define a chamber, a layer of transparent conductive material disposed on the rear surface of the front element, at least one solution-phase electrochromic material contained within the chamber, and a second electrode overlying the front surface of the rear element in contact with the electrochromic material. The second electrode includes a layer of highly reflective material and a coating of electrically conductive material that is at least partially transmissive and is disposed over substantially all of the front surface of the rear element. The second electrode further includes a region in front of the light source that is at least partially transmissive. The electrically conductive coating may include a single transparent layer or a plurality of partially reflective and transmissive layers, or an electrically conductive dichroic coating. The light source may be an information display, such as a compass/temperature display as used in an inside rearview mirror, or may be a signal light as used in an outside rearview mirror.
摘要:
The invention is an energy efficient, thermochromic device for windows that allows sunlight or solar radiation into a building or structure when the ambient temperature is low and substantially blocks solar radiation when the ambient temperature is high, especially when sunlight is directly on the window. Additionally, the invention is a thermochromic device useful as variable transmission shutters for use in lenses or filters.