摘要:
An electric field activated molecular system, preferably bi-stable, configured within an electric field generated by a pair of electrodes is provided for use, e.g., as electronic ink or other visual displays. The molecular system has an electric field induced band gap change that occurs via a change (reversible or irreversible) of the extent of the electron conjugation via chemical bonding change to change the band gap, wherein in a first state, there is substantial conjugation throughout the molecular system, resulting in a relatively smaller band gap, and wherein in a second state, the substantial conjugation is destroyed, resulting in a relatively larger band gap. The changing of substantial conjugation may be accomplished in one of the following ways: (1) charge separation or recombination accompanied by increasing or decreasing electron localization in the molecule; or (2) change of substantial conjugation via charge separation or recombination and&pgr;-bond breaking or making. A primary advantage of the molecular system is improved contrast. Because the colorant of the present invention is molecular and thus effectively monoplanar, there should be no backside reflection or excessive scattering from the colorant. A second advantage of the present invention is improved resolution. Finally, each molecule of the present invention will latch to stabilize one or the other of its color states.
摘要:
A self-assembled molecular color switch is formed on a substrate and comprises coupled coaxial rotors and non-coaxial stators, with each rotor rotatably connected to two stators, to form molecular planes wherein all rotors at rest are parallel to the substrate and orthogonal to an electric field. The color switch employs a novel chemistry for producing a molecular film having a field switchable color. More particularly, it is a chemistry that provides for relatively thick self-assembled molecular layers collectively having print-like optical density. Further, a means for bi-stable color switching is provided.
摘要:
A laser printing system for imaging using plain paper, rewritable media, or both. The rewritable media employs a molecular colorant. The rewritable media is brought into contact with an electrical charge deposited on the surface of a photoconductor drum or belt. Field generated cause the molecules of the colorant to change state to develop the desired text or print image.
摘要:
Apparatus for monitoring, converting and calibrating the spectra displayed by a colored object, using wavelength dispersion provided by a variable wavelength filter. The apparatus may serve as a spectrophotometer, as a colorimeter, or as a spectroradiometer or other device that monitors and calibrates a light signal by decomposition of the signal into a wavelength distribution. The apparatus may also be used as part of a feedback network to monitor and correct colors displayed by a color monitor, color printer, color scanner or other similar peripheral device controlled by a computer that is part of the network.
摘要:
Method and apparatus for determining the distance a sheet of paper, or other reflective or transmissive substrate material with a suitable, approximately planar surface, has moved in a given direction. The substrate is illuminated by reflection or transmission of light at non-normal incidence, and a linear array of N uniformly spaced light sensors is provide to receive and sense light issuing from the illuminated substrate. This produces a first or reference array of light signal strengths s.sub.1 (k) (k=1,2, . . . , N). The substrate is then moved in the given direction, and a second array of signal strengths s.sub.2 (k) (k=1, 2, . . . , N) is produced. A cross-correlation function C(K), formed from consecutive portions of the first and second light signal strength arrays, is then examined to determine the distance the substrate has moved in the given direction. A maximum in the cross-correlation function C(K) at K=K.sub.0 corresponds to displacement of the substrate in the given direction by a distance approximately equal to (MF)(K.sub.0 -i)d, where i is selected positive integer determined by the initial position of the substrate, the distance d is determined from the known spacing of the light sensors, and MF is the system optical magnification factor. The cross-correlation function can be computed with uniform or non-uniform weights in the sum. This one-dimensional approach is extended to determining the vector of two-dimensional movement of the substrate, including translation, rotation and scaling, in a two-dimensional plane.
摘要:
The trichromatic beamsplitter consists of composited dichroic beamsplitter plates that separate a projected image into its three color components with spatial as well as spectral precision. The three linear array photosensor comprises a monolithic sensor having three parallel photodiode arrays spaced precisely to accept the color component images of the trichromatic beamsplitter.The present invention also employs a spectral and spatial combiner that is capable of maintaining equal optical path lengths of each spectral beam so that a single combined beam can be produced and can be employed in a number of different applications such as a color camera device, a color recording device, a graphics presentation device, an electronic color filter device, a color projector device and a multi-channel optical communication device.
摘要:
A heated transfer line for heating a small glass capillary tube is disclosed. The transfer line is small and removable yet highly efficient, capable of uniformly heating a glass capillary tube over a 5-inch length to more than 400 degrees with less than 30 watts of power. The power is applied to an electrically conductive heater tube, which encircles the glass capillary, via first and second current conductors attached to respective ends of the heater tube. The first and second current conductors are arranged in proximity to the heater tube and back along the heater tube to a common point without touching each other. Electrical insulation is disposed between the heater tube and the first and second current conductors to electrically isolate the heater tube from the current conductors. A cover of thermal insulation is disposed over the heater tube and the current conductors and is used to thermally isolate the heater tube. An outer tube is disposed around the thermal insulation as a cover. A mounting ferrule is connected to the outer tube at the common point for mechanically mounting the transfer line and for providing an exit for the first and second current conductors.
摘要:
A heated transfer line for heating a small glass capillary tube is disclosed. The transfer line is small and removable yet highly efficient, capable of uniformly heating a glass capillary tube over a 5-inch length to more than 400 degrees with less than 30 watts of power. The power is applied to an electrically conductive heater tube, which encircles the glass capillary, via first and second current conductors attached to respective ends of the heater tube. The first and second current conductors are arranged in proximity to the heater tube and back along the heater tube to a common point without touching each other. Electrical insulation is disposed between the heater tube and the first and second current conductors to electrically isolate the heater tube from the current conductors. A cover of thermal insulation is disposed over the heater tube and the current conductors and is used to thermally isolate the heater tube. An outer tube is disposed around the thermal insulation as a cover. A mounting ferrule is connected to the outer tube at the common point for mechanically mounting the transfer line and for providing an exit for the first and second current conductors.
摘要:
A colorant molecule is provided that includes at least one switch unit. The switch unit comprises ring-based tautomers, of which there may be more than one per chromophore, and may include donor and/or acceptor moieties.
摘要:
A colorant molecule is provided that includes at least one switch unit. The switch unit comprises ring-based tautomers, of which there may be more than one per chromophore, and may include donor and/or acceptor moieties.