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11.2: High Contrast, Wide‐Viewing Angle LCD Light Filter
Author(s) -
Vrečko A.,
Pirš J.,
Pirš S.,
Ponikvar D.
Publication year - 2005
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2720318
Subject(s) - birefringence , viewing angle , liquid crystal display , optics , retarder , compensation (psychology) , polarizing filter , filter (signal processing) , contrast (vision) , contrast ratio , materials science , attenuation , high contrast , optical filter , physics , computer science , computer vision , psychology , psychoanalysis , composite material
The paper presents a novel concept of a wide viewing angle LCD light filter, making advantage of the symmetric, highly‐twisted complementary dual LC‐cell configuration. The resulting overall symmetry allows for very high, continuously variable optical attenuation as well as efficient angular compensation using just simple, cheap negative‐birefringent c‐plate retarders.