Abstract:
A beam-shaping optical system suitable for use with optical coherence tomography including a sheath defining a central cavity, a beam-shaping insert defining a beam-shaping element positioned within the central cavity, and an optical fiber having a core and a cladding. The optical fiber defines an angularly prepared fiber end configured to emit an electromagnetic beam toward the beam-shaping element with the core of the optical fiber locally expanded at the fiber end.
Abstract:
A beam-shaping optical system suitable for use with optical coherence tomography including a sheath defining a central cavity, a beam-shaping insert defining a beam-shaping element positioned within the central cavity, and an optical fiber having a core and a cladding. The optical fiber defines an angularly prepared fiber end configured to emit an electromagnetic beam toward the beam-shaping element with the core of the optical fiber locally expanded at the fiber end.
Abstract:
Multi-junction photovoltaic modules are provided comprising a plurality of photovoltaic structures, a PV encapsulant, a plurality of encapsulating glass layers, and a structural glass layer. The photovoltaic structures define distinct absorption bands and are positioned with the encapsulating glass layers and the structural glass layer. The photovoltaic structures are at least partially surrounded by the PV encapsulant and are separated by respective flexible encapsulating glass layers to electrically isolate adjacent photovoltaic structures and permit the photovoltaic structures to be configured in a parallel or serial PV stacked cell circuit.
Abstract:
Various examples are provided related to composite lightguides which can be used for augmented reality and other augmented display applications. In one example, a composite lightguide includes a support substrate including a surface and a lightguide layer disposed on the surface of the support substrate. The lightguide layer can have a density that is greater than the density of the support substrate. For example, the density of the lightguide layer can be greater than twice the density of the support substrate. The lightguide layer can have a thickness that is about 25% or less than the thickness of the support substrate.
Abstract:
An optical device includes a stack that includes a first curved optical element stacked with a second curved optical element. The second curved optical element propagates light by total internal reflection. The stack also includes an incoupling diffractive grating that incouples the light into the second optical element and an outcoupling diffractive grating optically coupled to the incoupling diffractive grating through the second curved optical element. The outcoupling diffractive grating directs the light. The first curved optical element has a first refractive index, the second curved optical element has a second refractive index, and the first refractive index is different from the second refractive index by approximately 0.15 to 1.2.
Abstract:
A method for forming a glass stack, comprising: obtaining a glass sheet; selecting a plurality of portions of the glass sheet having a matching glass characteristic, wherein the glass characteristic is at least one of warp, bow, total thickness variation (TTV), and wedge; cutting a plurality of glass wafers from the selected portions of the glass sheet, and stacking the plurality of glass wafers to form a glass stack.