Inventor
NAGANUMA HIROAKI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “NAGANUMA HIROAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NISCA CORP
13 patentsUS6027261AFeb 22, 2000
Exposure adjusting device for a camera
NISCA CORP22 citations92
US7513701B2Apr 7, 2009
Imaging apparatus and light quantity regulating device used therein
NISCA CORP17 citations83
US6554502B2Apr 29, 2003
Light quantity controller
NISCA CORP17 citations83
US6960848B2Nov 1, 2005
Electromagnetic drive device and light quantity adjustment device using the same
NISCA CORP16 citations81
US7316514B2Jan 8, 2008
Light controller and image pickup device including the same
NISCA CORP7 citations73
US7290947B2Nov 6, 2007
Light controller and image pickup device including the same
NISCA CORP8 citations73
US6565270B2May 20, 2003
Light quantity controller and camera system including the same
NISCA CORP10 citations73
US6926454B1Aug 9, 2005
Electromagnetic driving unit and light quantity regulating apparatus using the same
NISCA CORP9 citations65
US7396169B2Jul 8, 2008
Light quantity adjusting device and photographing device having the same
NISCA CORP5 citations62
US6550986B2Apr 22, 2003
Light quantity controller
NISCA CORP3 citations62
US7446443B2Nov 4, 2008
Electromagnetic-driving device and light quantity-control device incorporating the same
NISCA CORP5 citations60
US7459813B2Dec 2, 2008
Magnet rotor and electromagnetically-driving device using the same, and optical apparatus with light quantity-control device
NISCA CORP4 citations59
US6981807B2Jan 3, 2006
Electromagnetic drive device and light quantity adjustment device using the same
NISCA CORP4 citations59