This article is cited in 1 paper

Optics, Quantum Electronics

Liquid-crystal display as a spectral selector for visible spectrometers

Gopalkrishna Hegde

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

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.

Received: 22.09.2008

 English version: Technical Physics, 2010, 55:10, 1472–1477

Bibliographic databases:

•