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Performance limitations with mirror/QWP reference targets for reflective LCD measurements
Author(s) -
Collier W. Lewis,
Powell Robert A.,
Pietrzak Kenneth A.,
Smith Matthew H.
Publication year - 2006
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2166828
Subject(s) - computer science , compensation (psychology) , optics , calibration , physics , psychology , quantum mechanics , psychoanalysis
— Test equipment for reflective LCD devices must use a calibration target to mimic a known state of the intended display devices under test (DUTs). This target must also mimic the polarization effects of the DUTs. Traditionally, a mirror and quarter‐wave plate (MQWP) assembly is used for this function. By accounting for the reflectivity of the mirror and the transmission of the QWP, a reference target can be generated. The effects of the use of a QWP in this role will be examined and additional effects for which compensation must be performed in order to achieve accurate test results will be discussed.