Inventor
UEYAMA TETSUO
JP24 patents
⚠️ This page may combine multiple inventors who share the name “UEYAMA TETSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHARP KK
21 patentsUS5085496AFeb 4, 1992
Optical element and optical pickup device comprising it
SHARP KK242 citations99
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
US5881035AMar 9, 1999
Optical pickup device, optical disk recording/reproducing apparatus, and method of generating focus error signal
SHARP KK26 citations92
US5331621AJul 19, 1994
Optical pickup apparatus and a hologram element used for same
SHARP KK24 citations92
US5267089ANov 30, 1993
Inclination adjusting device for an objective lens for an optical information recording and reproduction apparatus
SHARP KK23 citations92
US5189655AFeb 23, 1993
Optical head for optical disk recording/reproducing apparatus including modified wollaston prism
SHARP KK41 citations92
US6868055B2Mar 15, 2005
Optical pickup
SHARP KK26 citations91
US7483360B2Jan 27, 2009
Optical pickup device using polarizing hologram element and hologram laser therefor
SHARP KK8 citations83
US6392965B1May 21, 2002
Optical pickup device
SHARP KK10 citations74
US5483508AJan 9, 1996
Optical recording and reproducing apparatus using a hologram to detect and judge a plurality of pit patterns
SHARP KK13 citations74
US7019280B2Mar 28, 2006
Apparatus for detecting the tilt of a light reflector relative to the optical axis of input light
SHARP KK8 citations73
US7106682B2Sep 12, 2006
Optical pickup
SHARP KK6 citations72
US7218599B2May 15, 2007
Optical pickup
SHARP KK2 citations63
US7684306B2Mar 23, 2010
Optical pickup apparatus
SHARP KK2 citations62
US7573801B2Aug 11, 2009
Optical pickup
SHARP KK4 citations62
US7369479B2May 6, 2008
Optical miniaturized module, optical pickup device, and optical disk device provided with light source and photodetector
SHARP KK2 citations62
US7184384B2Feb 27, 2007
Optical pickup
SHARP KK6 citations62
US7990834B2Aug 2, 2011
Optical pickup device recording and/or reproducing information on and/or from a plurality of kinds of recording media
SHARP KK3 citations61
US7649825B2Jan 19, 2010
Splitting element, light emitter, and optical pickup apparatus
SHARP KK7 citations61
US7315502B2Jan 1, 2008
Light integration unit, optical pickup device using the unit, and optical disk device
SHARP KK4 citations60
US7397752B2Jul 8, 2008
Pickup for magneto-optical recording medium
SHARP KK1 citations52