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Search Results for '2.2previousstructurefigure2showsaschematicviewofthepreviousstructureofthedirectionalbacklightsystemusinganellipticallyshapedmirrorwithonelightsource.thisbacklightsystemusesacharacteristicellipse'
becomes larger,itis difficultto useonly a singleconvex lenstoachieveas
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