Patent ID: 7760971
Filing Date: 2010-07-20
Classification: G07D

Abstract:
1. An anti-EMI lens module comprising: a circuit board, said circuit board comprising a plurality of electric recognition devices and a grounding device surrounding said electric recognition devices; a holder base mounted on said circuit board, said holder base having a plurality of through holes cut through top and bottom sides thereof and respectively aimed at said electric recognition devices and a metal conducting layer covered on an outer surface thereof and electrically disposed in contact with said grounding device of said circuit board and forming with said grounding device of said circuit board a grounding loop; and a lens device mounted in a top side of said holder base and covering said through holes of said holder base, wherein said lens device comprises a narrow elongated flat lens base supported on said holder base, a plurality of convex lens portions protruding from a top side of said flat lens base corresponding to said through holes of said holder base, and a plurality of flat protrusions protruded from a bottom side of said flat lens base and respectively fitted into said through holes of said holder base.