摘要:
A backlight that includes a front reflector and a back reflector that form a hollow light recycling cavity including an output surface is disclosed. The backlight further includes one or more light sources disposed to emit light into the light recycling cavity. The front reflector includes an on-axis average reflectivity of at least 90% for visible light polarized in a first plane, and an on-axis average reflectivity of at least 25% but less than 90% for visible light polarized in a second plane perpendicular to the first plane.
摘要:
A composite having (a) a substrate that has opposing first and second surfaces, the substrate being at least 90% transmissive in visible light and has less than 5% haze, (b) a nanostructured article including a matrix and a nanoscale dispersed phase and having a random nanostructured anisotropic surface; and (c) an optically clear adhesive disposed on the second surface of the substrate.
摘要:
Disclosed herein is an optical article having a top layer with a structured surface that collimates light, a core layer secured to the top layer opposite the structured surface, and a bottom layer secured to the core layer opposite the top layer. Either the top layer or the core layer includes a first extrudable polymer having a flexural modulus of greater than 2.5 GPa, and the other layer includes a second extrudable polymer having a flexural modulus of 2.5 GPa or less, an impact strength of greater than about 40 J/m, and tensile elongation at break of greater than about 5%. The bottom layer includes a third extrudable polymer. The bottom layer of the optical article may be structured to diffuse light. One or two optical articles may be secured to an optical film such as a polarizer film. Methods and display devices are also disclosed herein.
摘要:
Modified copolyesters having relatively low refractive indices and relatively high glass transition temperatures are disclosed. These modified copolyesters can be used in forming one or more layers in an optical film, such as a multilayer polymer film.
摘要:
Multilayer films are provided that exhibit a colored appearance when viewed at an oblique angle as a result of one or more reflection bands in the visible region of the spectrum. The films however provide no substantial reflection bands in either the visible or near infrared regions for light normally incident on the film. The films can be made to shift from clear at normal incidence to an arbitrary designed color at an oblique angle without necessarily becoming cyan.
摘要:
A multilayered polymer film is formed with a stack of one or more first optical layers, one or more second optical layers, and one or more non-optical layers. These optical and non-optical layers are typically made using polymer materials, such as polyesters. In one embodiment, the non-optical layers are made from a polyester having a composition which corresponds to the average molar composition of the combination of all of the first and second optical layers. Using this formulation, scrap material from the manufacture of multilayered polymer films may be used to generate the non-optical layers in subsequent films. Alternatively, the non-optical layers of a multilayered polymer film are made using scrap material from prior-manufactured multilayered polymer films with the optional addition of other polymer material which may be either new or recycled.
摘要:
A multilayered polymer film includes a first set of optical layers and a second set of optical layers. The first set of optical layers is made from a polyester which is often birefringent. The polyesters of the first set of optical layers typically have a composition in which 70-100 mol % of the carboxylate subunits are first carboxylate subunits and 0-30 mol % are comonomer carboxylate subunits and 70 to 100 mol % of the glycol subunits are first glycol subunits and 0 to 30 mol % of the glycol subunits are comonomer glycol subunits, where at least 0.5 mol % of the combined carboxylate and glycol subunits are comonomer carboxylate or comonomer glycol subunits. The second set of optical layers comprise copolyesters wherein 0.01 to 2.5 mol % of the combined carboxylate and glycol subunits are carboxylate subunits derived from compounds having three or more carboxylate or ester functionalities, glycol subunits derived from compounds having three or more hydroxyl functionalities, or combinations thereof. The multilayered polymer film may be used to form, for example, a reflective polarizer or a mirror.
摘要:
Surface-structured, cross-linked silicone-based material and method for making the same. Embodiments of silicone-based materials described herein are useful, for example, in applications of light capture, anti-reflection, light redirection, light diffusion, hydrophobic surfaces, hydrophilic surfaces, light guiding, light collimation, light concentration, Fresnel lens, retro-reflection, drag reduction, air bleed adhesives, release liner, abrasion resistance, and anti-fouling.
摘要:
Optical bodies are disclosed that include an optical film and at least one rough strippable skin layer. The at least one rough strippable skin layer can include a continuous phase and a disperse phase. In some embodiments, the at least one rough strippable skin layer can include a first polymer, a second polymer different from the first polymer and an additional material that is substantially immiscible in at least one of the first and second polymers. In some exemplary embodiments, a surface of the at least one rough strippable skin layer adjacent to the optical film comprises a plurality of protrusions and the adjacent surface of the optical film comprises a plurality of asymmetric depressions substantially corresponding to said plurality of protrusions. Methods of making such exemplary optical bodies are also disclosed.
摘要:
A transparent anti-reflective structured film (10) comprising a structured film substrate (12) having a structured face (14), with anti-reflective structures, for example, in the form of prismatic riblets (16) defining a structured surface. The structured face is anti-reflective to light, with at least a substantial portion of the structured surface comprising a glass-like surface. At least the anti-reflective structures comprise a cross-linked silicone elastomeric material and the glass-like surface comprises an Si02 stoichiometry. A solar light energy absorbing device is disclosed, comprising the transparent anti-reflective structured film disposed so as to be between a source of light energy and a light energy receiving face of a light absorber, when light energy is being absorbed by the light absorber.