摘要:
Glass bodies and methods of making glass bodies and more particularly glass bodies, for example, microlenses and arrays of microlenses and methods of making the same are described. Cordierite powder is vitrified to form a glass body or glass bodies for instance a microlens or microlenses.
摘要:
An apparatus and method for detecting defects in a transparent substrate by simultaneously using a combination of bright field and dark field light sources for illuminating the substrate. The apparatus is capable of detecting both inclusions and surface defects simultaneously while the substrate is in motion, simplifying the characterization of substrates in a manufacturing setting.
摘要:
Systems and methods for measuring the stress profile of ion-exchanged glass are disclosed, based on the TM and TE guided mode spectra of the optical waveguide formed in the ion-exchanged glass. The method includes digitally defining from the TM and TE guided mode spectra positions of intensity extrema, and calculating respective TM and TE effective refractive indices from these positions. The method also includes calculating TM and TE refractive index profiles nTM(z) and nTE(z) using either an inverse WKB calculation or a fitting process that employs assumed functions for nTM(z) and nTE(z). The method also includes calculating the stress profile S(z)=[nTM(z)−nTE(z)]/SOC, where SOC is a stress optic coefficient for the glass substrate. Systems for performing the method are also disclosed.
摘要:
Packages for elements, e.g., OLEDs, that are temperature sensitive are provided. The packages have a first glass substrate (12), a second glass substrate (16), and a wall (14) that separates the first and second substrates (12,16) and hermetically seals at least one temperature sensitive element (18,28,36) between the substrates (12,16). The wall (14) comprises a sintered frit and at least a portion of the wall is laser sealed to the second substrate (16) by melting a glass component of the sintered frit. The minimum width (40) of the laser-sealed portion of the wall (14) at any location along the wall (14) is greater than or equal to 2 millimeters so as to provide greater hermeticity and strength to the package. The laser sealing is performed without substantially degrading the temperature sensitive element(s) (18,28,36) housed in the package.
摘要:
Compositions made by metallothermal reduction from crystalline materials and methods of producing such compositions are provided. The compositions have novel crystalline structures in the form of three-dimensional scaffolds. Additionally, the compositions possess unusual properties that indicate possible applications in numerous applications.
摘要:
Light scattering substrates made by providing a substrate comprising at least one surface, forming a layer of particles by depositing a sol-gel on the at least one surface, and heating the coated substrate.
摘要:
An apparatus for optically coupling light between optical transmission components is provided. The apparatus includes first and second optical transmission components wherein the first optical transmission component includes a planar optical waveguide, a grating coupler, and a transparent substrate and the second optical transmission component includes an optical fiber. Preferably, the planar optical waveguide includes silicon and the transparent substrate includes glass. Methods for coupling light between optical transmission components are also provided.
摘要:
Packages for elements, e.g., OLEDs, that are temperature sensitive are provided. The packages have a first glass substrate (12), a second glass substrate (16), and a wall (14) that separates the first and second substrates (12,16) and hermetically seals at least one temperature sensitive element (18,28,36) between the substrates (12,16). The wall (14) comprises a sintered frit and at least a portion of the wall is laser sealed to the second substrate (16) by melting a glass component of the sintered frit. The minimum width (40) of the laser-sealed portion of the wall (14) at any location along the wall (14) is greater than or equal to 2 millimeters so as to provide greater hermeticity and strength to the package. The laser sealing is performed without substantially degrading the temperature sensitive element(s) (18,28,36) housed in the package.
摘要:
Packages for elements, e.g., OLEDs, that are temperature sensitive are provided. The packages have a first glass substrate (12), a second glass substrate (16), and a wall (14) that separates the first and second substrates (12,16) and hermetically seals at least one temperature sensitive element (18,28,36) between the substrates (12,16). The wall (14) comprises a sintered frit and at least a portion of the wall is laser sealed to the second substrate (16) by melting a glass component of the sintered frit. The minimum width (40) of the laser-sealed portion of the wall (14) at any location along the wall (14) is greater than or equal to 2 millimeters so as to provide greater hermeticity and strength to the package. The laser sealing is performed without substantially degrading the temperature sensitive element(s) (18,28,36) housed in the package.
摘要:
Methods of characterizing and measuring particulate accumulation in a family of particulate filters (10) are disclosed. The disclosure can be applied to diesel, gasoline and natural gas fueled engines, fluid streams bearing dust, and chemical and biological substances such as may be found in laboratory fluids, for example, air. In one embodiment, the disclosure is directed to measuring diesel particulate accumulation in a family of diesel particulate filters. The methods include measuring calibration complex terahertz transmission spectra (PC(f)) of at least a portion (17) of at least one particulate or diesel particulate filter in the family for different known particulate or diesel particulate amounts (ADP). The method also involves performing a partial least squares (PLS) analysis on the calibration complex terahertz transmission spectra to establish a calibration relationship between the complex terahertz transmission spectra and the particulate or diesel particulate amounts. The complex transmission spectrum of a subject particulate filter or diesel particulate filter having an unknown amount of particulate or diesel particulate accumulation is then determined and compared to the linear calibration relationship to establish a measured amount of particulates or diesel particulates. The methods include using a terahertz (THz) system (100) to obtain the complex terahertz transmission spectra for the calibration and subject particulate or diesel particulate filters.