Liquid-crystal display as a spectral selector for visible spectrometers

Hegde, Gopalkrishna (2010) Liquid-crystal display as a spectral selector for visible spectrometers. In: Technical Physics , 55 (10). pp. 1472-1477.

PDF Liquid.pdf - Published Version Restricted to Registered users only Download (288kB) | Request a copy

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.

Item Type:	Journal Article
Publication:	Technical Physics
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	04 Nov 2010 11:06
Last Modified:	04 Nov 2010 11:06
URI:	http://eprints.iisc.ac.in/id/eprint/33538

Actions (login required)

View Item