Takehiko Nakai

Person

Tochigi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical system and image pickup apparatus having same
- Patent number 8,279,526
- Issue date Oct 2, 2012
- Canon Kabushiki Kaisha
- Kazuhiko Momoki
- G02 - OPTICS
Information Patent Grant
Optical element having periodic structure and optical apparatus usi...
- Patent number 8,009,355
- Issue date Aug 30, 2011
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Optical system and optical apparatus having the same
- Patent number 7,626,772
- Issue date Dec 1, 2009
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system including the same
- Patent number 7,554,735
- Issue date Jun 30, 2009
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system including the same
- Patent number 7,301,702
- Issue date Nov 27, 2007
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffraction optical element
- Patent number 7,236,302
- Issue date Jun 26, 2007
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 7,075,722
- Issue date Jul 11, 2006
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element, and optical system and optical apparat...
- Patent number 6,930,833
- Issue date Aug 16, 2005
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element, and optical system and optical apparat...
- Patent number 6,927,915
- Issue date Aug 9, 2005
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,873,463
- Issue date Mar 29, 2005
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffraction optical element
- Patent number 6,829,093
- Issue date Dec 7, 2004
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,760,159
- Issue date Jul 6, 2004
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Picture taking apparatus having diffractive optical element
- Patent number 6,757,104
- Issue date Jun 29, 2004
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical apparatus having the same
- Patent number 6,650,477
- Issue date Nov 18, 2003
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,624,943
- Issue date Sep 23, 2003
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Lens system having diffracting surface and refracting surface and o...
- Patent number 6,590,708
- Issue date Jul 8, 2003
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Diffractive optical element
- Patent number 6,587,272
- Issue date Jul 1, 2003
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Projection display apparatus, and information processing system and...
- Patent number 6,565,212
- Issue date May 20, 2003
- Canon Kabushiki Kaisha
- Shuichi Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,560,019
- Issue date May 6, 2003
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and photographic optical system having...
- Patent number 6,507,437
- Issue date Jan 14, 2003
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Image reading device
- Patent number 6,486,974
- Issue date Nov 26, 2002
- Canon Kabushiki Kaisha
- Takehiko Nakai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,480,332
- Issue date Nov 12, 2002
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,330,110
- Issue date Dec 11, 2001
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,262,846
- Issue date Jul 17, 2001
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Method and apparatus for determining a predetermined pattern on an...
- Patent number 6,201,616
- Issue date Mar 13, 2001
- Canon Kabushiki Kaisha
- Nobuatsu Sasanuma
- G07 - CHECKING-DEVICES
Information Patent Grant
Invisible information detecting apparatus
- Patent number 6,153,879
- Issue date Nov 28, 2000
- Canon Kabushiki Kaisha
- Kazuo Yoshinaga
- G07 - CHECKING-DEVICES
Information Patent Grant
Diffractive optical element and optical system having the same
- Patent number 6,122,104
- Issue date Sep 19, 2000
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Grant
Image reading device with offset faces for visible and non-visible...
- Patent number 6,094,281
- Issue date Jul 25, 2000
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G07 - CHECKING-DEVICES
Information Patent Grant
Image processing apparatus and method, and image reading apparatus
- Patent number 6,078,682
- Issue date Jun 20, 2000
- Canon Kabushiki Kaisha
- Hiroshi Tanioka
- G07 - CHECKING-DEVICES
Information Patent Grant
Photosensor with filter for cutting off the input of invisible info...
- Patent number 6,051,826
- Issue date Apr 18, 2000
- Canon Kabushiki Kaisha
- Shinobu Arimoto
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME
- Publication number 20100302642
- Publication date Dec 2, 2010
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Application
OPTICAL SYSTEM AND OPTICAL APPARATUS HAVING THE SAME
- Publication number 20090135503
- Publication date May 28, 2009
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Application
OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING SAME
- Publication number 20090067053
- Publication date Mar 12, 2009
- Canon Kabushiki Kaisha
- Kazuhiko Momoki
- G02 - OPTICS
Information Patent Application
OPTICAL ELEMENT HAVING PERIODIC STRUCTURE AND OPTICAL APPARATUS USI...
- Publication number 20080130110
- Publication date Jun 5, 2008
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Application
DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME
- Publication number 20080043335
- Publication date Feb 21, 2008
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Application
DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME
- Publication number 20070297057
- Publication date Dec 27, 2007
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS
Information Patent Application
Diffraction optical element
- Publication number 20050243423
- Publication date Nov 3, 2005
- Takehiko Nakai
- G02 - OPTICS
Information Patent Application
Diffractive optical element and optical system including the same
- Publication number 20050219702
- Publication date Oct 6, 2005
- Canon Kabushiki Kaisha
- Takehiko Nakai
- G02 - OPTICS

Takehiko Nakai

Person

Patents Grantslast 30 patents

Optical system and image pickup apparatus having same

Optical element having periodic structure and optical apparatus usi...

Optical system and optical apparatus having the same

Diffractive optical element and optical system including the same

Diffractive optical element and optical system including the same

Diffraction optical element

Diffractive optical element and optical system having the same

Diffractive optical element, and optical system and optical apparat...

Diffractive optical element, and optical system and optical apparat...

Diffractive optical element and optical system having the same

Diffraction optical element

Diffractive optical element and optical system having the same

Picture taking apparatus having diffractive optical element

Diffractive optical element and optical apparatus having the same

Diffractive optical element and optical system having the same

Lens system having diffracting surface and refracting surface and o...

Diffractive optical element

Projection display apparatus, and information processing system and...

Diffractive optical element and optical system having the same

Diffractive optical element and photographic optical system having...

Image reading device

Diffractive optical element and optical system having the same

Diffractive optical element and optical system having the same

Diffractive optical element and optical system having the same

Method and apparatus for determining a predetermined pattern on an...

Invisible information detecting apparatus

Diffractive optical element and optical system having the same

Image reading device with offset faces for visible and non-visible...

Image processing apparatus and method, and image reading apparatus

Photosensor with filter for cutting off the input of invisible info...

Patents Applicationslast 30 patents

OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME

OPTICAL SYSTEM AND OPTICAL APPARATUS HAVING THE SAME

OPTICAL SYSTEM AND IMAGE PICKUP APPARATUS HAVING SAME

OPTICAL ELEMENT HAVING PERIODIC STRUCTURE AND OPTICAL APPARATUS USI...

DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME

DIFFRACTIVE OPTICAL ELEMENT AND OPTICAL SYSTEM INCLUDING THE SAME

Diffraction optical element

Diffractive optical element and optical system including the same