[7] MacNeile S M.Beam splitter.U.S. patent 2.403.731(6 July 1946)
[8] Banning M.Practical methods of making and using multiple layer filters.J Opt Soc Am, 1947,(37):792~797
[11] Li H F,Huang H C. Broadband, large acceptance angle polarizing beam splitter for reflective LCD projectors. Proceeding of SPIE,2000,3954:186~196