Inventor
IIZUKA TAKASHI
JP133 patents
⚠️ This page may combine multiple inventors who share the name “IIZUKA TAKASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI OPTICAL CO LTD
38 patentsUS6113240ASep 5, 2000
Reflection type projector
ASAHI OPTICAL CO LTD60 citations96
US6473233B1Oct 29, 2002
Multi-beam optical system
ASAHI OPTICAL CO LTD25 citations93
US6310726B1Oct 30, 2001
Image projecting device
ASAHI OPTICAL CO LTD22 citations93
US6264333B1Jul 24, 2001
Reflection type projector
ASAHI OPTICAL CO LTD22 citations93
US6219169B1Apr 17, 2001
Beam shape compensation optical system
ASAHI OPTICAL CO LTD21 citations93
US6104521AAug 15, 2000
Scanning optical systems
ASAHI OPTICAL CO LTD19 citations93
US5963355AOct 5, 1999
Optical scanning system with single element refractive/reflective Fθlθ lens
ASAHI OPTICAL CO LTD21 citations93
US5892611AApr 6, 1999
Laser drawing apparatus
ASAHI OPTICAL CO LTD26 citations93
US5790275AAug 4, 1998
Scanning optical system
ASAHI OPTICAL CO LTD32 citations93
US5745296AApr 28, 1998
Multibeam recording device
ASAHI OPTICAL CO LTD28 citations93
US5737112AApr 7, 1998
Scanning optical systems
ASAHI OPTICAL CO LTD25 citations93
US5677798AOct 14, 1997
Image forming lens system
ASAHI OPTICAL CO LTD36 citations93
US5648865AJul 15, 1997
Scanning optical system
ASAHI OPTICAL CO LTD45 citations93
US5646767AJul 8, 1997
Scanning optical system
ASAHI OPTICAL CO LTD39 citations93
US5541760AJul 30, 1996
Scanning optical system
ASAHI OPTICAL CO LTD28 citations93
US5412510AMay 2, 1995
Imaging optical system for compensating change of temperature
ASAHI OPTICAL CO LTD46 citations93
US5283599AFeb 1, 1994
Apparatus for combining and projecting images
ASAHI OPTICAL CO LTD40 citations93
US5278698AJan 11, 1994
Magnifying projecting lens
ASAHI OPTICAL CO LTD37 citations93
US5251069AOct 5, 1993
Imaging lens system
ASAHI OPTICAL CO LTD31 citations93
US5220450AJun 15, 1993
Scanning optical system capable of automatic focusing
ASAHI OPTICAL CO LTD43 citations93
US5200850AApr 6, 1993
Anamorphic optical system
ASAHI OPTICAL CO LTD31 citations93
US5189546AFeb 23, 1993
Scanning optical system with offset lens component
ASAHI OPTICAL CO LTD36 citations93
US5179398AJan 12, 1993
Projector and image adjustment method
ASAHI OPTICAL CO LTD28 citations93
US5046795ASep 10, 1991
Apparatus for producing a distortion-free two-dimensional image of a scanned object
ASAHI OPTICAL CO LTD22 citations93
US4998790AMar 12, 1991
Optical scanning apparatus
ASAHI OPTICAL CO LTD26 citations93
US4981352AJan 1, 1991
Projection display device
ASAHI OPTICAL CO LTD22 citations93
US6115146ASep 5, 2000
Scanning-type image reading device
ASAHI OPTICAL CO LTD34 citations92
US5909300AJun 1, 1999
Scanning apparatus having a cascade scanning optical system
ASAHI OPTICAL CO LTD30 citations92
US5828479AOct 27, 1998
Cascade scanning optical system
ASAHI OPTICAL CO LTD33 citations92
US5798784AAug 25, 1998
Laser drawing apparatus featuring a beam separator supported by an adjusting means swingable about a rotating shaft
ASAHI OPTICAL CO LTD31 citations92
US6091533AJul 18, 2000
Reflection type scanning optical system
ASAHI OPTICAL CO LTD18 citations84
US6021000AFeb 1, 2000
Beam splitting diffractive optical element
ASAHI OPTICAL CO LTD14 citations82
US5572353ANov 5, 1996
Laser scanning device
ASAHI OPTICAL CO LTD18 citations82
US6469831B2Oct 22, 2002
Multibeam optical system
ASAHI OPTICAL CO LTD8 citations74
US6388811B1May 14, 2002
Diffractive optical element including a diffractive grating pattern
ASAHI OPTICAL CO LTD5 citations74
US6288831B1Sep 11, 2001
Laser modulating optical system
ASAHI OPTICAL CO LTD11 citations74
US6212010B1Apr 3, 2001
Diffractive optical element including a diffractive grating pattern
ASAHI OPTICAL CO LTD7 citations74
US6166843ADec 26, 2000
Optical scanning system with single element refractive/reflective fθ lens and single element refractive/reflective fθ lens
ASAHI OPTICAL CO LTD13 citations74
PENTAX CORP
4 patentsUS6538247B2Mar 25, 2003
Method of detecting arrangement of beam spots
PENTAX CORP60 citations96
US6493126B1Dec 10, 2002
Scanning lens and scanning optical system
PENTAX CORP22 citations93
US6771406B2Aug 3, 2004
Scanning optical system
PENTAX CORP8 citations74
US6643044B1Nov 4, 2003
Scanning optical system
PENTAX CORP7 citations74
CANON KK
4 patentsUS5433988AJul 18, 1995
Multi-layer reflection mirror for soft X-ray to vacuum ultraviolet ray
CANON KK80 citations96
US5310603AMay 10, 1994
Multi-layer reflection mirror for soft X-ray to vacuum ultraviolet ray
CANON KK66 citations96
US5052033ASep 24, 1991
Reflection type mask
CANON KK75 citations96
US5204887AApr 20, 1993
X-ray microscope
CANON KK49 citations92
AJINOMOTO KK
2 patentsSEGA ENTERPRISES KK
1 patentHYMO CORP
1 patentShowing the top 50 of 133 patents by PatentIndex Score.