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    • 27. 发明申请
    • Glass for IR Signature Reduction
    • 用于IR签名缩减的玻璃
    • US20100244652A1
    • 2010-09-30
    • US12409833
    • 2009-03-24
    • Leslie Brandon ShawJasbinder S. SangheraIshwar D. Aggarwal
    • Leslie Brandon ShawJasbinder S. SangheraIshwar D. Aggarwal
    • H01J5/00F21V9/04
    • C03C4/082F21V9/04H01J61/302
    • A doped glass composition is provided. A base glass is doped with rare earth ions Terbium Tb3+ and Europium Eu3+ to produce a glass that reduces the transmission of short-wave infrared radiation therethrough without reducing the transmission of visible light. A base glass composition is doped with Tb3+ and Eu3+ ions to an appreciable concentration, in some embodiments in excess of 5 mol % and in other embodiments to a concentration in excess of 1 mol %. A suitable glass for doping according to the present invention includes any glass that can accept rare earth ions at appreciable densities such as the densities described above, and can include oxide-based, fluoride-based, and chalcogenide-based glasses. The doped glass attenuates transmission of short-wave infrared radiation having wavelengths of about 1.8 μm to about 2.5 μm and does not reduce transmission of visible light having wavelengths from about 0.4 μm to about 0.8 μm.
    • 提供掺杂的玻璃组合物。 掺有稀土离子铽Tb3 +和铕Eu3 +的基底玻璃制成玻璃,可以减少短波红外线的透射,而不降低可见光的透过率。 基础玻璃组合物掺杂有Tb 3+和Eu 3+离子至相当浓度,在一些实施方案中超过5mol%,在其它实施方案中浓度超过1mol%。 根据本发明的用于掺杂的合适的玻璃包括可以以可察觉的密度例如上述密度接受稀土离子的任何玻璃,并且可以包括氧化物基,氟化物基和硫族化物基玻璃。 掺杂玻璃衰减波长为约1.8μm至约2.5μm的短波红外辐射的透射,并且不减少波长为约0.4μm至约0.8μm的可见光的透射。
    • 28. 发明申请
    • Method and apparatus for infrared spectrometry
    • 红外光谱法的方法和装置
    • US20100108886A1
    • 2010-05-06
    • US11155927
    • 2006-05-18
    • Leslie Brandon ShawJasbinder S. SangheraIshwar D. Aggarwal
    • Leslie Brandon ShawJasbinder S. SangheraIshwar D. Aggarwal
    • G01J5/02
    • G01J3/02G01J3/0218G01J3/0245G01J3/0256G01J3/06G01J3/453
    • A Fourier-Transform Infrared (FTIR) spectrometer for operation in the mid- and long-wave infrared region (about 2-15 micron wavelengths) is disclosed. The FTIR spectrometer is composed of IR-transmitting fiber and uses a broadband IR source. A fiber stretcher is provided to provide a path difference between a first path and a second path having a sample associated therewith. Stretching of the fiber provides a path difference sufficient to generate an interferogram that can subsequently be analyzed to obtain information about a sample. A method for use of the apparatus of the invention is also disclosed. The method involves stretching of an IR-transmitting fiber to create a path difference sufficient to generate an interferogram. Various aspects of these features enable the construction of compact, portable spectrometers.
    • 公开了用于在中长波红外区域(约2-15微米波长)中操作的傅里叶变换红外(FTIR)光谱仪。 FTIR光谱仪由红外发射光纤组成,使用宽带红外线源。 提供纤维拉伸器以提供具有与其相关联的样品的第一路径和第二路径之间的路径差。 纤维的拉伸提供足以产生干涉图的路径差异,随后可以分析干涉图以获得关于样品的信息。 还公开了本发明的装置的使用方法。 该方法涉及拉伸IR发射光纤以产生足以产生干涉图的路径差。 这些特征的各个方面使得能够构造紧凑的便携式光谱仪。