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2. 发明授权

US6031609A Fourier transform spectrometer using a multielement liquid crystal display 失效
标题翻译：傅里叶变换光谱仪采用多元素液晶显示
公开(公告)号：US6031609A
公开(公告)日：2000-02-29
申请号：US865409
申请日：1997-05-29
申请人： David J. Funk , David S. Moore
发明人： David J. Funk , David S. Moore
IPC分类号： G01J3/453 , G01J3/04
CPC分类号： G01J3/4531
摘要： Fourier transform spectrometer using a multielement liquid crystal display. A ferroelectric liquid crystal mask is used as an optical encoder for a solid-state Fourier transform spectrometer. A 1.times.64 element array was striped and used as a 1.times.4 element device. The device intersected dispersed radiation and encoded each spectral component thereof with a carrier signal by applying half-wave potentials to each of the four striped (1.times.16) liquid crystal elements which varied the transmitted amplitude of the light from 0.03% to 28% of full scale. The light was spectrally recombined and imaged onto a photomultiplier and the resulting carrier frequencies (and their amplitudes) detected by Fourier transformation of the time-varying signal. Spectra of colored-glass filters were taken to demonstrate the spectrometer.
摘要翻译：傅里叶变换光谱仪采用多元素液晶显示。铁电液晶掩模用作固态傅里叶变换光谱仪的光学编码器。 1x64元素阵列被条纹化并用作1x4元素设备。该器件通过将四分之一（1x16）液晶元件中的每一个施加半波电位，将散射的辐射与其每个光谱分量相乘，并对其进行编码，从而将光的透射振幅从满刻度的0.03％改变为28％。光被光谱重组并成像到光电倍增管上，并通过时变信号的傅里叶变换检测所得到的载波频率（及其幅度）。拍摄彩色玻璃滤光片的光谱仪来证明光谱仪。

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