Keiji Sakai

Person

Nara-shi Nara, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light source module and electronic apparatus provided with same
- Patent number 8,727,592
- Issue date May 20, 2014
- Sharp Kabushiki Kaisha
- Takuya Ishizaka
- G02 - OPTICS
Information Patent Grant
Illuminating apparatus, image reading apparatus, and image forming...
- Patent number 8,599,447
- Issue date Dec 3, 2013
- Sharp Kabushiki Kaisha
- Yasuhiro Suto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical pickup unit and optical pickup device having same and infor...
- Patent number 8,189,434
- Issue date May 29, 2012
- Sharp Kabushiki Kaisha
- Osamu Miyazaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Splitting element, light emitter, and optical pickup apparatus
- Patent number 7,649,825
- Issue date Jan 19, 2010
- Sharp Kabushiki Kaisha
- Kazuhiro Tsuchida
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device using polarizing hologram element and hologra...
- Patent number 7,483,360
- Issue date Jan 27, 2009
- Sharp Kabushiki Kaisha
- Katsushige Masui
- G11 - INFORMATION STORAGE
Information Patent Grant
Light integration unit, optical pickup device using the unit, and o...
- Patent number 7,315,502
- Issue date Jan 1, 2008
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup
- Patent number 7,184,384
- Issue date Feb 27, 2007
- Sharp Kabushiki Kaisha
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor laser device and optical pickup device
- Patent number 7,136,409
- Issue date Nov 14, 2006
- Sharp Kabushiki Kaisha
- Masahiro Ikehara
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup
- Patent number 7,106,682
- Issue date Sep 12, 2006
- Sharp Kabushiki Kaisha
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for detecting the tilt of a light reflector relative to t...
- Patent number 7,019,280
- Issue date Mar 28, 2006
- Sharp Kabushiki Kaisha
- Fumio Kokubo
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup
- Patent number 6,868,055
- Issue date Mar 15, 2005
- Sharp Kabushiki Kaisha
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Hologram laser unit and optical pickup device including the same
- Patent number 6,388,977
- Issue date May 14, 2002
- Sharp Kabushiki, Kaisha
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical pickup device
- Patent number 6,339,562
- Issue date Jan 15, 2002
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Objective lens driving apparatus and method including visco-elastic...
- Patent number 5,719,834
- Issue date Feb 17, 1998
- Sharp Kabushiki Kaisha
- Masayasu Futagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical disk pick-up device having mode splitter using cut...
- Patent number 5,652,737
- Issue date Jul 29, 1997
- Sharp Kabushiki Saisha
- Kohji Minami
- G02 - OPTICS
Information Patent Grant
Objective lens driving apparatus
- Patent number 5,602,808
- Issue date Feb 11, 1997
- Sharp Kabushiki Kaisha
- Masayasu Futagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for producing a tapered waveguide
- Patent number 5,576,149
- Issue date Nov 19, 1996
- Sharp Kabushiki Kaisha
- Hiroyuki Yamamoto
- G02 - OPTICS
Information Patent Grant
Mode splitter and a magneto-optical disk pick-up device having the...
- Patent number 5,509,094
- Issue date Apr 16, 1996
- Sharp Kabushiki Kaisha
- Kohji Minami
- G02 - OPTICS
Information Patent Grant
Fiber optic face plate for a seamless modular display
- Patent number 5,502,457
- Issue date Mar 26, 1996
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G02 - OPTICS
Information Patent Grant
Display apparatus having a plurality of display devices
- Patent number 5,465,315
- Issue date Nov 7, 1995
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Three-dimensional image display apparatus for optically synthesizin...
- Patent number 5,408,264
- Issue date Apr 18, 1995
- Sharp Kabushiki Kaisha
- Yukio Kurata
- G02 - OPTICS
Information Patent Grant
Manufacturing method of optical diffraction grating element with se...
- Patent number 5,279,924
- Issue date Jan 18, 1994
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G02 - OPTICS
Information Patent Grant
Process for preparing blazed holograms
- Patent number 5,013,494
- Issue date May 7, 1991
- Sharp Kabushiki Kaisha
- Katsuhiro Kubo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
SURFACE LIGHT SOURCE DEVICE AND ELECTRONIC DEVICE PROVIDED WITH SAME
- Publication number 20130016529
- Publication date Jan 17, 2013
- Sharp Kabushiki Kaisha
- Sumito Nishioka
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE MODULE AND ELECTRONIC APPARATUS PROVIDED WITH SAME
- Publication number 20120287670
- Publication date Nov 15, 2012
- Sharp Kabushiki Kaisha
- Takuya Ishizaka
- G02 - OPTICS
Information Patent Application
LIGHT SOURCE MODULE AND ELECTRONIC APPARATUS PROVIDED WITH SAME
- Publication number 20120275188
- Publication date Nov 1, 2012
- Sharp Kabushiki Kaisha
- Eiji Kurimoto
- G02 - OPTICS
Information Patent Application
ILLUMINATING APPARATUS, IMAGE READING APPARATUS, AND IMAGE FORMING...
- Publication number 20110273752
- Publication date Nov 10, 2011
- Sharp Kabushiki Kaisha
- Yasuhiro Suto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical Pickup Unit and Optical Pickup Device Having Same and Infor...
- Publication number 20080062826
- Publication date Mar 13, 2008
- Sharp Kabushiki Kaisha
- Osamu Miyazaki
- G11 - INFORMATION STORAGE
Information Patent Application
Optical Integrated Unit Including Hologram Element and Optical Pick...
- Publication number 20080018969
- Publication date Jan 24, 2008
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Application
Laser oscillation element and optical pickup device
- Publication number 20070159954
- Publication date Jul 12, 2007
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Application
Split body, light emitting body and optical pickup device
- Publication number 20060262695
- Publication date Nov 23, 2006
- SHARP KABUSHIKI KAISHA
- Kazuhiro Tsuchida
- G11 - INFORMATION STORAGE
Information Patent Application
Focus error detecting device and optical pickup apparatus provided...
- Publication number 20060018212
- Publication date Jan 26, 2006
- Sharp Kabushiki Kaisha
- Kazuhiro Tsuchida
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup
- Publication number 20050180293
- Publication date Aug 18, 2005
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup
- Publication number 20050141391
- Publication date Jun 30, 2005
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup and hologram laser
- Publication number 20050100061
- Publication date May 12, 2005
- Katsushige Masui
- G11 - INFORMATION STORAGE
Information Patent Application
Tilt sensing apparatus
- Publication number 20040238727
- Publication date Dec 2, 2004
- Fumio Kokubo
- G01 - MEASURING TESTING
Information Patent Application
Optical pickup device
- Publication number 20040228236
- Publication date Nov 18, 2004
- Sharp Kabushiki Kaisha
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Application
Semiconductor laser device and optical pickup device
- Publication number 20040202224
- Publication date Oct 14, 2004
- Sharp Kabushiki Kaisha
- Masahiro Ikehara
- G02 - OPTICS
Information Patent Application
Light integration unit, optical pickup device using the unit, and o...
- Publication number 20040156299
- Publication date Aug 12, 2004
- Keiji Sakai
- G11 - INFORMATION STORAGE
Information Patent Application
Optical pickup
- Publication number 20020024916
- Publication date Feb 28, 2002
- Tetsuo Ueyama
- G11 - INFORMATION STORAGE

Keiji Sakai

Person

Patents Grantslast 30 patents

Light source module and electronic apparatus provided with same

Illuminating apparatus, image reading apparatus, and image forming...

Optical pickup unit and optical pickup device having same and infor...

Splitting element, light emitter, and optical pickup apparatus

Optical pickup device using polarizing hologram element and hologra...

Light integration unit, optical pickup device using the unit, and o...

Optical pickup

Semiconductor laser device and optical pickup device

Optical pickup

Apparatus for detecting the tilt of a light reflector relative to t...

Optical pickup

Hologram laser unit and optical pickup device including the same

Optical pickup device

Objective lens driving apparatus and method including visco-elastic...

Magneto-optical disk pick-up device having mode splitter using cut...

Objective lens driving apparatus

Method for producing a tapered waveguide

Mode splitter and a magneto-optical disk pick-up device having the...

Fiber optic face plate for a seamless modular display

Display apparatus having a plurality of display devices

Three-dimensional image display apparatus for optically synthesizin...

Manufacturing method of optical diffraction grating element with se...

Process for preparing blazed holograms

Patents Applicationslast 30 patents

SURFACE LIGHT SOURCE DEVICE AND ELECTRONIC DEVICE PROVIDED WITH SAME

LIGHT SOURCE MODULE AND ELECTRONIC APPARATUS PROVIDED WITH SAME

LIGHT SOURCE MODULE AND ELECTRONIC APPARATUS PROVIDED WITH SAME

ILLUMINATING APPARATUS, IMAGE READING APPARATUS, AND IMAGE FORMING...

Optical Pickup Unit and Optical Pickup Device Having Same and Infor...

Optical Integrated Unit Including Hologram Element and Optical Pick...

Laser oscillation element and optical pickup device

Split body, light emitting body and optical pickup device

Focus error detecting device and optical pickup apparatus provided...

Optical pickup

Optical pickup

Optical pickup and hologram laser

Tilt sensing apparatus

Optical pickup device

Semiconductor laser device and optical pickup device

Light integration unit, optical pickup device using the unit, and o...

Optical pickup