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Further proposals for the application of liquid crystals to photoelastic instrumentation
Author(s) -
Hearn E. J.,
Walker N.,
Cigari H. Shadrokh
Publication year - 1985
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1985.tb01921.x
Subject(s) - liquid crystal , instrumentation (computer programming) , materials science , optoelectronics , liquid crystal display , optics , plane (geometry) , electrical engineering , engineering physics , engineering , computer science , physics , mathematics , geometry , operating system
Liquid crystal displays (L.C.D's) are well known for their application to electronic watches, calculators, games and digital thermometers, the technology involved being derived from electro‐optic effects observed in liquid crystals since about 1968. A previous technical note 1 introduced proposals for the application of one type of liquid crystal cell (45°twisted nematic) to rapid conversion from plane to circular polarisation states by means of electrical switching of the cells from ‘off’ to ‘on’ states. This was shown to be particularly attractive for automatic control purposes.