Determination of the twist angle and the retardation properties of twisted nematic liquid crystal television by spectral measurements

Remo Giust; Jean-Pierre Goedgebuer

doi:10.1117/1.601863

1 February 1998 Determination of the twist angle and the retardation properties of twisted nematic liquid crystal television by spectral measurements

Remo Giust, Jean-Pierre Goedgebuer

Author Affiliations +

Optical Engineering, Vol. 37, Issue 2, (February 1998). https://doi.org/10.1117/1.601863

We describe a method to determine the anisotropic parameters of liquid crystal televisions (LCTVs) formed by twisted nematic liquid crystals, as a function of the wavelength over a broad spectral range. One of them is the twist angle ? and the second, ?, is related to the birefringence of the liquid crystal. The method is based on the concept of the channeled spectrum and applies whenever the user has no information about the structure of the cell and the molecular director. It is shown that the recording of three channeled spectra is sufficient to determine the twist angle and the retardation properties of the cell. The method is illustrated with the experimental characterization of red, green, and blue LCTVs from a video projector.

Citation Download Citation

Remo Giust and Jean-Pierre Goedgebuer "Determination of the twist angle and the retardation properties of twisted nematic liquid crystal television by spectral measurements," Optical Engineering 37(2), (1 February 1998). https://doi.org/10.1117/1.601863

Published: 1 February 1998

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available