Inventor
MAEDA FUMISADA
JP32 patents
⚠️ This page may combine multiple inventors who share the name “MAEDA FUMISADA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
29 patentsUS5764613AJun 9, 1998
optical pickup apparatus
SONY CORP117 citations98
US6097688AAug 1, 2000
Recording/reproducing apparatus and recording/reproducing method for optical recording media
SONY CORP55 citations96
US5402407AMar 28, 1995
Optical pickup apparatus and method for adjusting optical axis thereof
SONY CORP95 citations96
US7697187B2Apr 13, 2010
Electrowetting device and varifocal lens, optical pickup device, optical recording/reproduction device, droplet operation device, optical element, zoom lens, imaging device, light modulating device, and display device using the same
SONY CORP20 citations93
US7298559B2Nov 20, 2007
Variable focus lens and optical device using the same as well as method of manufacturing variable focus lens
SONY CORP21 citations93
US6414931B1Jul 2, 2002
Lens driving device, optical head and optical disc system
SONY CORP26 citations93
US6292453B1Sep 18, 2001
Optical disc recording/reproduction apparatus having a lens group, focus, servo, and jog mode adjustment
SONY CORP37 citations93
US6115347ASep 5, 2000
Optical pick-up device, optical recording/reproducing apparatus and objective lens
SONY CORP28 citations93
US6058095AMay 2, 2000
Objective lens having a doublet lens with high numerical aperture
SONY CORP21 citations93
US6041031AMar 21, 2000
Optical disc recording/reproduction apparatus and method
SONY CORP24 citations93
US6005834ADec 21, 1999
Optical recording medium recording and reproducing apparatus and optical pickup device
SONY CORP30 citations93
US5712842AJan 27, 1998
Optical pick-up device
SONY CORP55 citations93
US6594204B1Jul 15, 2003
Lens holder, method for manufacturing lens holder, metal die for producing lens holder and objective lens device
SONY CORP33 citations92
US6570827B1May 27, 2003
Optical element for correction of chromatic aberration, optical pick-up device having optical element for correction of chromatic aberration, optical reproducing device having optical pick-up device and optical recording and reproducing device
SONY CORP21 citations92
US7978400B2Jul 12, 2011
Electro-wetting apparatus and method of driving electro-wetting apparatus
SONY CORP11 citations84
US6977782B2Dec 20, 2005
Object lens producing device and producing method
SONY CORP13 citations84
US6674696B1Jan 6, 2004
Focus controlling apparatus and method, and optical disc drive
SONY CORP12 citations74
US6104691AAug 15, 2000
Objective lens unit and recording/reproduction apparatus
SONY CORP13 citations74
US6055113AApr 25, 2000
Optical pickup and an optical pickup objective lense assembling method
SONY CORP12 citations74
US5828453AOct 27, 1998
Lens designing method and objective lens apparatus with two lenses
SONY CORP11 citations74
US5786947AJul 28, 1998
Optical pickup device with a floating element
SONY CORP7 citations74
US5774281AJun 30, 1998
Optical pickup device for light collection onto an optical recording medium
SONY CORP10 citations74
US5243580ASep 7, 1993
Head for a magneto-optical recording apparatus
SONY CORP7 citations74
US9496685B2Nov 15, 2016
Laser emitting apparatus and master oscillator power amplifier system
SONY CORP3 citations73
US7170693B2Jan 30, 2007
Objective lens, and optical pickup device using the objective lens
SONY CORP6 citations63
US6212136B1Apr 3, 2001
Magneto-optical disc apparatus with means to change the angle and distance between a magnetic field generating source and a magneto-optical disc
SONY CORP5 citations63
US8014076B2Sep 6, 2011
Variable focal length lens, camera module, and electronic apparatus
SONY CORP1 citations52
USRE40371EJun 10, 2008
Optical disc recording/reproduction apparatus and method
SONY CORP0 citations52
US6829210B2Dec 7, 2004
Optical head and optical pickup
SONY CORP1 citations52