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Liquid-crystal display as a spectral selector for visible spectrometers

  • Optics, Quantum Electronics
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Abstract

The polarization properties of a twisted nematic liquid crystal display (TNLCD) are studied experimentally with the aim of using it as a wavelength selector. The output of a white LED is split into its constituent wavelengths with a resolution of 2–5 nm in proportion to a voltage applied to the TNLCD. The feasibility of employing the display as a wavelength selector in visible spectrometers is demonstrated. A simple inexpensive design of a spectrometer built around an LED and a TNLCD is suggested.

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Authors and Affiliations

  1. Department of Aerospace Engineering, Indian Institute of Science, Bangalore, 560012, India

    Gopalkrishna Hegde

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  1. Gopalkrishna Hegde
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Correspondence to Gopalkrishna Hegde.

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Original Russian Text © Gopalkrishna Hegde, 2010, published in Zhurnal Tekhnicheskoĭ Fiziki, 2010, Vol. 80, No. 10, pp. 83–88.

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Hegde, G. Liquid-crystal display as a spectral selector for visible spectrometers. Tech. Phys. 55, 1472–1477 (2010). https://doi.org/10.1134/S1063784210100129

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  • DOI: https://doi.org/10.1134/S1063784210100129

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