\RequirePackage{fontspec}
\setmainfont[% main font
	 UprightFont=LucidaBrightOT,
         ItalicFont=LucidaBrightOT-Italic,
	 BoldFont=LucidaBrightOT-Demi,
	 BoldItalicFont=LucidaBrightOT-DemiItalic,
         SmallCapsFeatures={Numbers=OldStyle},	 
         ]{LucidaBrightOT.otf}
\setsansfont[%
 UprightFont=LucidaSansOT,
 ItalicFont=LucidaSansOT-Italic,
 BoldFont=LucidaSansOT-Demi,
 BoldItalicFont=LucidaSansOT-DemiItalic,
 SmallCapsFeatures={Numbers=OldStyle},	 
]{LucidaSansOT.otf}
% 
\setmonofont[%
 UprightFont=LucidaSansTypewriterOT,
 ItalicFont=LucidaSansTypewriterOT-Oblique,
 BoldFont=LucidaSansTypewriterOT-Bold,
 BoldItalicFont=LucidaSansTypewriterOT-BoldOblique,
 SmallCapsFeatures={Numbers=OldStyle},	 
	]{LucidaSansTypewriterOT.otf}
% support for OpenType math fonts:
\RequirePackage{unicode-math}
\setmathfont{LucidaBrightMathOT.otf}
\setmathfont[version=bold]{LucidaBrightMathOT-Demi.otf}