Inventor
SENSUI TAKAYUKI
JP57 patents
⚠️ This page may combine multiple inventors who share the name “SENSUI TAKAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI OPTICAL CO LTD
34 patentsUS6384987B1May 7, 2002
Wide-angle lens system
ASAHI OPTICAL CO LTD55 citations96
US6317271B1Nov 13, 2001
Zoom lens system
ASAHI OPTICAL CO LTD21 citations93
US6292629B1Sep 18, 2001
Indicator provided within finder for single lens reflex camera
ASAHI OPTICAL CO LTD20 citations93
US6246529B1Jun 12, 2001
Wide-angle zoom lens system
ASAHI OPTICAL CO LTD28 citations93
US5748384AMay 5, 1998
Zoom lens
ASAHI OPTICAL CO LTD29 citations93
US5206498AApr 27, 1993
Focus detecting apparatus having variable power condenser lens
ASAHI OPTICAL CO LTD29 citations93
US5786942AJul 28, 1998
Zoom lens and aspherical lens
ASAHI OPTICAL CO LTD20 citations92
US6421189B1Jul 16, 2002
Telephoto lens system
ASAHI OPTICAL CO LTD18 citations84
US5733710AMar 31, 1998
Method for manufacturing a master die for a diffusion plate and diffusion plate manufactured by said method
ASAHI OPTICAL CO LTD18 citations83
US5530236AJun 25, 1996
Focus detecting apparatus with particular arrangement of light receiving portions
ASAHI OPTICAL CO LTD16 citations82
US5397887AMar 14, 1995
Focus detection apparatus having multiple detecting zones
ASAHI OPTICAL CO LTD17 citations82
US5321248AJun 14, 1994
Focus detection apparatus having multiple detecting zones
ASAHI OPTICAL CO LTD19 citations82
US6393219B1May 21, 2002
Multipoint focus detecting apparatus
ASAHI OPTICAL CO LTD8 citations74
US6359739B1Mar 19, 2002
Macro lens system
ASAHI OPTICAL CO LTD12 citations74
US6297909B1Oct 2, 2001
Focus detecting optical system
ASAHI OPTICAL CO LTD10 citations74
US6188845B1Feb 13, 2001
Multipoint focus detecting apparatus
ASAHI OPTICAL CO LTD10 citations74
US6041186AMar 21, 2000
Finder system
ASAHI OPTICAL CO LTD7 citations74
US5870637AFeb 9, 1999
Auxiliary light emitting device and focusing condition detecting device
ASAHI OPTICAL CO LTD8 citations74
US5646393AJul 8, 1997
Focus detecting apparatus including ray orientation changes
ASAHI OPTICAL CO LTD6 citations74
US5568323AOct 22, 1996
Zoom lens
ASAHI OPTICAL CO LTD16 citations74
US5497229AMar 5, 1996
Photometering apparatus having a split light receiving device
ASAHI OPTICAL CO LTD7 citations74
US5347399ASep 13, 1994
Zoom lens system
ASAHI OPTICAL CO LTD17 citations74
US5327192AJul 5, 1994
Focus detecting apparatus
ASAHI OPTICAL CO LTD7 citations74
US5293535AMar 8, 1994
Eye direction detecting device
ASAHI OPTICAL CO LTD18 citations74
US5280319AJan 18, 1994
Exposure control apparatus of camera including exposure factor limit value setting means
ASAHI OPTICAL CO LTD8 citations74
US5602616AFeb 11, 1997
Exposure control apparatus of camera
ASAHI OPTICAL CO LTD9 citations73
US5420438AMay 30, 1995
Focus detecting apparatus including movement of detecting zones
ASAHI OPTICAL CO LTD8 citations73
US6370333B1Apr 9, 2002
Multipoint focus detecting apparatus
ASAHI OPTICAL CO LTD3 citations63
US6327098B1Dec 4, 2001
Wide-angle zoom lens system
ASAHI OPTICAL CO LTD5 citations63
US6314247B1Nov 6, 2001
View finder device having compact structure
ASAHI OPTICAL CO LTD5 citations63
US6188846B1Feb 13, 2001
Optical system for focus detecting device
ASAHI OPTICAL CO LTD3 citations63
US6128444AOct 3, 2000
Multipoint focus detecting apparatus
ASAHI OPTICAL CO LTD6 citations63
US5940635AAug 17, 1999
Focus detection optical system in a single lens reflex camera
ASAHI OPTICAL CO LTD5 citations63
US5485242AJan 16, 1996
Exposure control apparatus of camera
ASAHI OPTICAL CO LTD4 citations63
PENTAX CORP
8 patentsUS7190389B1Mar 13, 2007
Stereo camera
PENTAX CORP134 citations98
US6687061B2Feb 3, 2004
Wide-angle lens system
PENTAX CORP13 citations84
US6545824B2Apr 8, 2003
Wide-angle lens system
PENTAX CORP15 citations84
US6714244B1Mar 30, 2004
Internal indication of a viewfinder of a camera
PENTAX CORP15 citations83
US6757108B2Jun 29, 2004
Zoom lens system
PENTAX CORP7 citations74
US6574437B2Jun 3, 2003
Focus detection apparatus
PENTAX CORP8 citations74
US6618560B2Sep 9, 2003
Focus detection device
PENTAX CORP3 citations63
US6552857B2Apr 22, 2003
Soft-focus lens system
PENTAX CORP6 citations63
NIKON CORP
5 patentsUS7218457B2May 15, 2007
Interchangeable lens
NIKON CORP20 citations93
US7903348B2Mar 8, 2011
Rear-focus optical system, imaging apparatus and method for focusing the same
NIKON CORP13 citations84
US7126759B2Oct 24, 2006
Zoom lens system
NIKON CORP14 citations84
US7333273B2Feb 19, 2008
Zoom lens system, imaging apparatus and method for varying focal length
NIKON CORP6 citations63
US7277235B2Oct 2, 2007
Zoom lens system
NIKON CORP5 citations63
ASAHI SEIMITSU KK
2 patentsASAHI KOGAKU KOGYO KAISHA
1 patentShowing the top 50 of 57 patents by PatentIndex Score.