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last 30 patents
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Patent Grant
Optical pick-up head and integrated type optical unit for use in op...
Patent number
5,898,167
Issue date
Apr 27, 1999
Olympus Optical Co., Ltd.
Toru Musha
G02 - OPTICS
Information
Patent Grant
Optical pick-up head and integrated type optical unit for use in op...
Patent number
5,814,807
Issue date
Sep 29, 1998
Olympus Optical Co., Ltd.
Toru Musha
G02 - OPTICS
Information
Patent Grant
Optical pick-up head and integrated type optical unit for use in op...
Patent number
5,804,814
Issue date
Sep 8, 1998
Toru Musha
G02 - OPTICS
Information
Patent Grant
Focus error detecting apparatus
Patent number
5,233,444
Issue date
Aug 3, 1993
Olympus Optical Co., Ltd.
Toru Musha
G02 - OPTICS
Information
Patent Grant
Method and apparatus for detecting tracking error
Patent number
4,544,838
Issue date
Oct 1, 1985
Olympus Optical Co., Ltd.
Toru Musha
G11 - INFORMATION STORAGE
Information
Patent Grant
Apparatus for driving objective lens in tracking direction
Patent number
4,479,051
Issue date
Oct 23, 1984
Olympus Optical Co., Ltd.
Toru Musha
G11 - INFORMATION STORAGE
Information
Patent Grant
Objective lens driving device for tracking and focus corrections
Patent number
4,408,313
Issue date
Oct 4, 1983
Olympus Optical Company Limited
Toru Musha
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for detecting focussing error signal of object...
Patent number
4,390,781
Issue date
Jun 28, 1983
Olympus Optical Co. Ltd.
Toru Musha
G11 - INFORMATION STORAGE
Information
Patent Grant
Objective lens driving device
Patent number
4,386,823
Issue date
Jun 7, 1983
Olympus Optical Co. Ltd.
Toru Musha
G02 - OPTICS
Information
Patent Grant
Optical information reading-out apparatus
Patent number
4,302,830
Issue date
Nov 24, 1981
Olympus Optical Company Ltd.
Takashi Hamaoka
G11 - INFORMATION STORAGE