Optical unit and image display device thereof | Patent Publication Number 20020159161

US 20020159161 A1
Patent NumberUS 06493149 B2
Application Number9943755
Filled DateSep 4, 2001
Priority DateSep 4, 2001
Publication DateOct 31, 2002
Original AssigneeHitachi Ltd.
Current AssigneeHitachi Ltd.
Inventor/ApplicantsSatoshi Ouchi
Satoshi Ouchi
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