Inventor
SUGI YASUYUKI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “SUGI YASUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI MAXELL
14 patentsUS7414796B2Aug 19, 2008
Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
HITACHI MAXELL12 citations92
US7411743B2Aug 12, 2008
Multi-wavelength lens, and optical system, optical head and optical disc apparatus using the lens
HITACHI MAXELL27 citations92
US6678096B2Jan 13, 2004
Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
HITACHI MAXELL22 citations92
US6836378B2Dec 28, 2004
Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
HITACHI MAXELL5 citations73
US7619836B2Nov 17, 2009
Imaging lens unit
HITACHI MAXELL5 citations71
US7446958B2Nov 4, 2008
Imaging lens unit
HITACHI MAXELL6 citations71
US7755998B2Jul 13, 2010
Optical pickup system, optical head, optical disk apparatus, and objective lens
HITACHI MAXELL2 citations59
US7733578B2Jun 8, 2010
Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
HITACHI MAXELL0 citations52
US7606120B2Oct 20, 2009
Objective lens, optical head, optical system, and design method for objective lens
HITACHI MAXELL0 citations52
US6965482B2Nov 15, 2005
Objective lens design method, lens, and optical system, optical head, and optical disc apparatus using the same
HITACHI MAXELL0 citations52
US7924685B2Apr 12, 2011
Objective lens
HITACHI MAXELL1 citations51
US7855940B2Dec 21, 2010
Pickup lens with phase compensator and optical pickup apparatus using the same
HITACHI MAXELL0 citations45
US7586815B2Sep 8, 2009
Pickup lens with phase compensator and optical pickup apparatus using the same
HITACHI MAXELL0 citations45
US7787349B2Aug 31, 2010
Optical pickup lens and optical pickup apparatus
HITACHI MAXELL0 citations39
HITACHI LTD
5 patentsUS6507009B1Jan 14, 2003
Optical detector, signal processing circuit and optical information reproduction apparatus thereof
HITACHI LTD27 citations92
US5872761AFeb 16, 1999
Optical disk apparatus and optical head thereof
HITACHI LTD17 citations92
US5699341ADec 16, 1997
Optical disk apparatus and optical head thereof
HITACHI LTD19 citations92
US6721242B2Apr 13, 2004
Optical detector having three light receiving areas
HITACHI LTD14 citations84
US5301064AApr 5, 1994
Rear focusing type zoom lens system
HITACHI LTD11 citations72