Abstract:
Polymer fibers are formed with concentric alternating layers of different polymer materials. The layers pairs have cross-sectional thicknesses selected for reflecting light at a selected visible wavelength. A cross-sectional dimension of the core is at least ten times an average of the selected thicknesses of the alternating layers. Some articles formed by the fibers are formed by attaching one fiber to another: the color of the fibers at the point of attachment is different from the colors of the fibers elsewhere. The fibers may be deformed to change its color properties by elongating the cross-section of the polymer fiber along a first cross-sectional axis. In some embodiments, the fibers are polarization sensitive.
Abstract:
Optical films having structured surfaces are used, inter alia, for managing the propagation of light within a display. As displays become larger, it becomes more important that the film be reinforced so as to maintain rigidity. An optical film of the invention has a first layer comprising inorganic fibers embedded within a polymer matrix. The first layer has a structured surface to provide an optical function to light passing therethrough. The film may have various beneficial optical properties, for example, light that propagates substantially perpendicularly through the first layer may be subject to no more than a certain level of haze or light incident on the film may be subject to a minimum value of brightness gain. Various methods of manufacturing the films are described.
Abstract:
A method of increasing the efficiency of a multiphoton absorption process and apparatus. The method includes: providing a photoreactive composition; providing a source of sufficient light for simultaneous absorption of at least two photons; exposing the photoreactive composition to at least one transit of light from the light source; and directing at least a portion of the first transit of the light back into the photoreactive composition using at least one optical element, wherein a plurality of photons not absorbed in at least one transit are used to expose the photoreactive composition in a subsequent transit.
Abstract:
corpo de filme, filme óptico multicamada, filme do corpo de filme e método de subdivisão de um corpo de filme a presente invenção refere-se a conversão a laser dos corpos de filme óptico de múltiplas camadas compreendendo materiais de poliéster e policarbonato.
Abstract:
Method of fabricating an optical element. A photodefinable composition is provided that includes (i) a hydrophobic, photodefinable polymer, said photodefinable polymer having a glass transition temperature in the cured state of at least about 80° C.; and (ii) a multiphoton photoinitiator system comprising at least one multiphoton photosensitizer and preferably at least one photoinitiator that is capable of being photosensitized by the photosensitizer. One or more portions of the composition are imagewise exposed to the electromagnetic energy under conditions effective to photodefinably form at least a portion of a three-dimensional optical element.
Abstract:
Un artículo microfluídico con transmisión óptica potenciada, que comprende por lo menos una película para control de fluido ópticamente transmisiva al menos parcialmente para transportar un fluido que tiene por lo menos una superficie principal microestructurada que incluye una pluralidad de microcanales con paredes laterales no paralelas, caracterizado por las paredes laterales de los microcanales, teniendo este ángulo una línea central, definiendo la línea central del ángulo incluido y una línea normal a la superficie principal microestructurada, un ángulo de inclinación.
Abstract:
Un artículo con base adhesiva, que comprende: (a) una película elástica (12) que tiene una superficie superior (14) y una superficie inferior (16); y (b) un adhesivo sensible a la presión (18;50;60;70) pegado a la superficie inferior (16) de dicha película elástica (12), teniendo dicho adhesivo sensible a la presión (18;50;60;70) una superficie microestructurada (20), opuesta a dicha película elástica (12), formando canales (24;54;66;74) que definen un volumen de al menos 1X103 µm3 por cualquier área circular de 500 µm de diámetro de dicho adhesivo (18;50;60;70), los canales (24;54;66;74) definen caminos de salida que proporcionan una salida de fluido hacia una periferia de dicho artículo, cuando dicho artículo se aplica a un substrato, siendo adhesivo dicho artículo con base adhesiva como indica el resultado de al menos 85% según el ensayo del porcentaje de mojado, y siendo los canales (24;54;66;74) sustancialmente indetectables sobre la superficie superior (14) de dicha película elástica(12), después de la aplicación final de dicho artículo sobre el substrato.