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A study of wire‐grid polarizers for projection displays
Author(s) -
Yu X. J.,
Kwok H. S.
Publication year - 2003
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 - 10.1889/1.1825660
Subject(s) - polarizer , projection (relational algebra) , optics , computer science , extinction ratio , grid , extinction (optical mineralogy) , computer graphics (images) , physics , algorithm , geometry , mathematics , wavelength , birefringence
— The appropriateness of using wire‐grid polarizers (WGP) in projection displays is studied. In particular, we shall discuss the case of projectors with reflective light valves. We shall show that WGPs offer some distinct advantages over conventional polarizers, in terms of large extinction ratios and large numerical apertures. However, there is considerable light absorption leading to reduced light utilization efficiency. We also show that of the four possible combinations of configurations, only one offers the best contrast and efficiency.