Objective lens optical system and light beam splitting element | Patent Publication Number 20080181090

US 20080181090 A1
Patent Number-
Application Number11979333
Filled DateNov 1, 2007
Priority DateNov 1, 2007
Publication DateJul 31, 2008
Original AssigneeHitachi Ltd.
Current AssigneeHitachi Ltd.
Inventor/ApplicantsKoichiro Wakabayashi
Tomonori Kanai
Mitsuhiro Miyauchi
Yoshikazu Mitsui
Yasuyuki Sugi
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