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Tetsuya Ishii
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Image pickup optical system and optical apparatus using the same
Patent number
7,515,194
Issue date
Apr 7, 2009
Olympus Corporation
Tetsuo Nagata
G02 - OPTICS
Information
Patent Grant
Diffractive optical element
Patent number
7,271,956
Issue date
Sep 18, 2007
Olympus Corporation
Tetsuya Ishii
G02 - OPTICS
Information
Patent Grant
Decentering optical system, holding structure of decentering optica...
Patent number
7,199,951
Issue date
Apr 3, 2007
Olympus Corporation
Tetsuo Nagata
G02 - OPTICS
Information
Patent Grant
Image pickup apparatus
Patent number
7,095,573
Issue date
Aug 22, 2006
Olympus Corporation
Tetsuo Nagata
G02 - OPTICS
Information
Patent Grant
Diffractive optical element
Patent number
6,781,756
Issue date
Aug 24, 2004
Olympus Corporation
Tetsuya Ishii
G02 - OPTICS
Information
Patent Grant
Optical system including diffraction optical element
Patent number
6,449,094
Issue date
Sep 10, 2002
Olympus Optical Co., Ltd.
Tetsuya Ishii
G02 - OPTICS
Information
Patent Grant
Optical system comprising a diffractive optical element, and method...
Patent number
6,330,109
Issue date
Dec 11, 2001
Olympus Optical Co., Ltd.
Tetsuya Ishii
G02 - OPTICS
Information
Patent Grant
Optical system comprising a diffractive optical element, and method...
Patent number
6,246,522
Issue date
Jun 12, 2001
Olympus Optical Co., Ltd.
Tetsuya Ishii
G02 - OPTICS
Information
Patent Grant
Diffractive optical element
Patent number
6,157,488
Issue date
Dec 5, 2000
Olympus Optical Company Ltd.
Tetsuya Ishii
G02 - OPTICS
Information
Patent Grant
Diffractive optical element
Patent number
5,847,877
Issue date
Dec 8, 1998
Olympus Optical Co., Ltd.
Ayami Imamura
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Image pickup apparatus
Publication number
20050146801
Publication date
Jul 7, 2005
Tetsuo Nagata
G02 - OPTICS
Information
Patent Application
Decentering optical system, holding structure of decentering optica...
Publication number
20050063075
Publication date
Mar 24, 2005
Tetsuo Nagata
G02 - OPTICS
Information
Patent Application
Image pickup optical system and optical apparatus using the same
Publication number
20050046952
Publication date
Mar 3, 2005
Tetsuo Nagata
G02 - OPTICS
Information
Patent Application
Diffractive optical element
Publication number
20040263982
Publication date
Dec 30, 2004
OLYMPUS CORPORATION
Tetsuya Ishii
G02 - OPTICS
Information
Patent Application
Optical system comprising a diffractive optical element, and method...
Publication number
20010043397
Publication date
Nov 22, 2001
Tetsuya Ishii
G02 - OPTICS