Yoshikazu Hirayama

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Chiba-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Zoom optical system
- Patent number 9,535,240
- Issue date Jan 3, 2017
- Nikon Corporation
- Yoshikazu Hirayama
- G02 - OPTICS
Information Patent Grant
Catadioptric imaging lens
- Patent number 9,395,525
- Issue date Jul 19, 2016
- Nikon Corporation
- Miho Matsumoto
- G02 - OPTICS
Information Patent Grant
Image display optical system, image display unit, illuminating opti...
- Patent number 7,778,508
- Issue date Aug 17, 2010
- Nikon Corporation
- Yoshikazu Hirayama
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
ZOOM OPTICAL SYSTEM
- Publication number 20140268363
- Publication date Sep 18, 2014
- Nikon Corporation
- Yoshikazu Hirayama
- G02 - OPTICS
Information Patent Application
CATADIOPTRIC IMAGING LENS
- Publication number 20140211330
- Publication date Jul 31, 2014
- Miho Matsumoto
- G02 - OPTICS
Information Patent Application
Image Display Optical System, Image Display Unit, Illuminating Opti...
- Publication number 20080094586
- Publication date Apr 24, 2008
- Yoshikazu Hirayama
- G02 - OPTICS
Information Patent Application
Optical elements and combiner optical systems and image-display uni...
- Publication number 20070070859
- Publication date Mar 29, 2007
- NIKON CORPORATION
- Yoshikazu Hirayama
- G02 - OPTICS
Information Patent Application
Optical image display system and image display unit
- Publication number 20070008624
- Publication date Jan 11, 2007
- NIKON CORPORATION
- Yoshikazu Hirayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE