Abstract:
A method and system is disclosed for payment for goods or services. This disclosure provides a method whereby having cash or credit card in hand is not required to make a purchase. The method requires using information related to an account such as a credit card to process a request for a seat reservation or ticket to an event. Then a seat reservation or ticket to the event is issued. The user decides what the credit limit shall be extended for this event. In a second transaction typically days later at a location of the seat reservation or the event, for example on a aircraft wherein the location is different from the location of where the ticket was purchased the user can initiate a transaction. Upon request for goods or services by the ticket or card holder, using information associated with the seat reservation or ticket, a transaction for the purchase of the requested goods or services is initiated. A computer is used to debit the account for the purchase of the goods or services in dependence upon the information associated with the reservation seat or ticket.
Abstract:
The present invention extends the concept of a standard array waveguide grating (AWG), which focuses each wavelength component launched via an input AWG to a Rowland circle inside a planar lightwave chip (PLC) where discrete waveguides are located, to one which focuses each wavelength component outside of the PLC chip along a straight line. An array of MEMS mirrors or other redirecting elements is positioned at the focus location for independently redirecting each of the wavelength channels back to any number of selected output AWGs formed on the same PLC chip as the input AWG.
Abstract:
A method for forming an optically variable device upon a substrate comprises the steps of: patterning a reflective layer on the substrate using an oil-ablation technique; removing oil residue from the first side of the substrate using a first glow discharge; and depositing thin-film layers so as to be supported by the substrate to form the optically variable device. Optionally, oil residue is removed from the second side of the substrate using a second glow discharge.
Abstract:
A printing apparatus and method for aligning special effect flakes is disclosed. The flakes field orientable and have an absorption band of wavelengths and a reflection band of wavelengths and are dispersed within in a viscous paste-like ink. The absorption band of the flakes is more absorbing than reflecting and the reflecting band is more reflecting than absorbing. A laser diode array is provided for generating beams of light positioned to irradiate the paste-like ink coating on the substrate so as to lessening the viscosity of the paste like ink by irradiating with light. Preferably at least 45% of the optical power of the one or more beams of light is in the absorption band of the flakes. After the flakes are heated to lessen the viscosity of the ink, a magnetic field is applied so as to orient the flakes within the ink.
Abstract:
Multilayered magnetic pigment flakes and foils are provided. The pigment flakes can have a stacked layer structure on opposing sides of a magnetic core, or can be formed as an encapsulant structure with encapsulating layers around the magnetic core. The magnetic core in the stacked layer structure includes a magnetic layer that is sandwiched between opposing insulator layers, which in turn are sandwiched between opposing reflector layers. Similarly, the magnetic core in the encapsulant structure includes a magnetic layer that is surrounded by an insulator layer, which in turn is surrounded by a reflector layer. The insulator layers in the pigment flakes substantially prevent corrosion of the flakes when exposed to harsh environments. Some embodiments of the pigment flakes and foils exhibit a discrete color shift at differing angles of incident light or viewing. The pigment flakes can be interspersed into liquid media such as paints or inks to produce colorant compositions for subsequent application to objects or papers. The foils can be laminated to various objects or can be formed on a carrier substrate.
Abstract:
A filter device provides for the modification of the group delay of an optical signal without attenuation of adjacent optical signals in a WDM optical communication systems. The filters devices may be combined and used in various methods to modify the GD and dispersion. The filters are configured and designed to provide various controllable and different amounts of GD as well as dispersion at different over a range of wavelengths.
Abstract:
The present invention relates to a folded front end unit used in a light engine of a projection display device. The front end unit comprises a light source for generating a beam of light, and a lightpipe for providing spatial uniformity to the beam of light. Polarization-dependent front end units include polarization beam splitters for separating the light into orthogonally polarized sub-beams, and a polarization rotating element, e.g. a waveplate, for rotating the polarization of one of the sub-beams. In accordance with the present invention, a prism is positioned between the light source and the lightpipe for reflecting the light into the lightpipe. The difference in refractive index between the air and the prism decreases the cone angle of the beam of light enough to effectively increase the distance between the light source and the lightpipe to compensate for the added distance required to fold the light.
Abstract:
The invention relates to a conventional broad-area laser having a single-mode output through the phenomenon of multimode interference (MMI) in step-index waveguides. Another aspect of the present invention relates to a very robust multi-mode compound cavity laser design that is fully defined by the geometry and the refractive index profile of the MMI region, which is quite insensitive to slight macro-scale refractive index variations due to manufacturing variation or temperature. As the self-imaging position shifts linearly in the refractive index, the confocal beam parameter can be made relatively long.
Abstract:
An apparatus for adaptively receiving, compensating, and transmitting data in optical fiber communication networks are provided. A receiver according to this invention includes at least one optical device for compensating distortion in a channel of an optical signal, at least one photodetector circuit for converting the optical signal into an electrical signal, at least one electronic device for further compensating the distortion in the electronic signal, a clock and data recovery circuit for generating a recovered data signal and a clock signal from the electronic signal, and a post-processing circuit.
Abstract:
This invention discloses a magnet for use as a printing plate or printing head that is used for aligning flakes or particles in a paint or ink. A composite sheet or block of magnetizable material is selectively magnetized so that a magnet is formed within the sheet or block that has a shape of a predetermined image, logo, or indica. Dies are used to magnetize the magnetizable material and preferably the does contact the material to be magnetized. A pre-magnetized sheet such as a refrigerator magnet may be re-magnetized differently so that a magnetic image is encoded therein for use as a printing plate. Preferably the printing plate is flexible so that it can be formed to a curved surface of a cylinder or drum for printing. Conveniently these flexible magnets can be changed for other designs and placed on the same drum for use in printing.