Inventor
KURATA YUKIO
JP69 patents
Patents
50 patentsUS5085496AFeb 4, 1992
Optical element and optical pickup device comprising it
SHARP KK242 citations99
US6021239AFeb 1, 2000
Photocoupler and method for producing the same
SHARP KK86 citations96
US5502457AMar 26, 1996
Fiber optic face plate for a seamless modular display
SHARP KK77 citations96
US5465315ANov 7, 1995
Display apparatus having a plurality of display devices
SHARP KK76 citations96
US5446719AAug 29, 1995
Optical information reproducing apparatus
SHARP KK73 citations96
US5410622AApr 25, 1995
Optical integrated circuit having light detector
SHARP KK59 citations96
US5013494AMay 7, 1991
Process for preparing blazed holograms
SHARP KK56 citations96
US4988165AJan 29, 1991
Object lens driving device
SHARP KK55 citations96
US4947261AAug 7, 1990
Portable image input device
SHARP KK88 citations96
US6731856B1May 4, 2004
Organic waveguide and manufacturing method thereof and optical part using the same
SHARP KK20 citations93
US6030540AFeb 29, 2000
Method for producing tapered waveguide
SHARP KK28 citations93
US5515354AMay 7, 1996
Optical pickup
SHARP KK40 citations93
US5408264AApr 18, 1995
Three-dimensional image display apparatus for optically synthesizing images formed on different surfaces on a display screen
SHARP KK27 citations93
US5283690AFeb 1, 1994
Optical diffraction grating element
SHARP KK31 citations93
US5128914AJul 7, 1992
Optical pickup apparatus utilizing a diffraction device
SHARP KK49 citations93
US6822799B2Nov 23, 2004
Exposing apparatus and exposing method for microlens array
SHARP KK29 citations92
US6741406B2May 25, 2004
Objective lens, optical pickup-device equipped with same and assembling method of same
SHARP KK37 citations92
US6626584B2Sep 30, 2003
Two-way optical communication device, two-way optical communication system, and method for assembling two-way optical communication device
SHARP KK24 citations92
US6487015B2Nov 26, 2002
Diffraction grating having multiple gratings with different cycles for generating multiple beams and optical pickup using such diffraction grating
SHARP KK19 citations92
US6388822B1May 14, 2002
Optical pickup device and optical recording medium
SHARP KK37 citations92
US6078707AJun 20, 2000
Waveguide-photodetector, method for producing the same, waveguide usable in the waveguide-photodetector, and method for producing the same
SHARP KK30 citations92
US5652816AJul 29, 1997
Optical coupler and method for producing the same
SHARP KK35 citations92
US5331621AJul 19, 1994
Optical pickup apparatus and a hologram element used for same
SHARP KK24 citations92
US5279924AJan 18, 1994
Manufacturing method of optical diffraction grating element with serrated gratings having uniformly etched grooves
SHARP KK47 citations92
US5253237AOct 12, 1993
Optical head device
SHARP KK23 citations92
US5251280AOct 5, 1993
Liquid crystal display apparatus
SHARP KK28 citations92
US5111449AMay 5, 1992
Optical pick-up device using diffraction grating element having two sub-regions
SHARP KK34 citations92
US4904856AFeb 27, 1990
Optical pickup device with diffraction sensing
SHARP KK45 citations92
US6868055B2Mar 15, 2005
Optical pickup
SHARP KK26 citations91
US6516115B1Feb 4, 2003
Two-way optical communication device and two-way optical communication apparatus
SHARP KK24 citations90
US5391865AFeb 21, 1995
Optical pickup apparatus and optical grating assembly therefor
SHARP KK33 citations89
US7251076B1Jul 31, 2007
Optical component and method for producing thick polyimide film
SHARP KK15 citations84
US7038995B2May 2, 2006
Optical pickup for optically reading/writing data including convergent and aberration correction optical systems
SHARP KK16 citations84
US6744568B2Jun 1, 2004
Objective lens, method for correcting manufacturing error thereof, and optical pick-up device using the same
SHARP KK18 citations84
US6501876B1Dec 31, 2002
Bidirectional optical communication device and bidirectional optical communication apparatus
SHARP KK19 citations84
US6292609B1Sep 18, 2001
Optical components including an optical element having a surface that is tapered
SHARP KK15 citations84
US5509094AApr 16, 1996
Mode splitter and a magneto-optical disk pick-up device having the mode splitter
SHARP KK17 citations82
US5049732ASep 17, 1991
Optical pickup device with diffraction device
SHARP KK20 citations82
US6937381B2Aug 30, 2005
Optical pickup device
SHARP KK10 citations74
US6525296B2Feb 25, 2003
Method of processing and optical components
SHARP KK9 citations74
US5726962AMar 10, 1998
Compact optical pickup device with beam splitter
SHARP KK14 citations74
US5576149ANov 19, 1996
Method for producing a tapered waveguide
SHARP KK11 citations74
US5483508AJan 9, 1996
Optical recording and reproducing apparatus using a hologram to detect and judge a plurality of pit patterns
SHARP KK13 citations74
US5440427AAug 8, 1995
Optical pick-up device having an optical diffraction grating element
SHARP KK5 citations74
US5428472AJun 27, 1995
Optical scan device having an optical diffraction grating element
SHARP KK9 citations74
US5428595AJun 27, 1995
Optical information recording and reproducing device
SHARP KK13 citations74
US5283772AFeb 1, 1994
Optical head
SHARP KK11 citations74
US5257131AOct 26, 1993
Polarization diffraction element and polarization detector employing the same
SHARP KK12 citations74
US5202869AApr 13, 1993
Optical head device including diffraction grating
SHARP KK7 citations74
US5173890ADec 22, 1992
Optical pickup device including diffraction grating
SHARP KK7 citations74
Showing the top 50 of 69 patents by PatentIndex Score.