Inventor
WAKAMIYA KOICHI
JP17 patents
⚠️ This page may combine multiple inventors who share the name “WAKAMIYA KOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON KOGAKU KK
10 patentsUS4448497AMay 15, 1984
Great aperture ratio lens
NIPPON KOGAKU KK28 citations92
US4768868ASep 6, 1988
Rear conversion lens
NIPPON KOGAKU KK35 citations91
US4697901AOct 6, 1987
Parallax correcting device in the finder of a camera
NIPPON KOGAKU KK22 citations82
US4707098ANov 17, 1987
Albada finder
NIPPON KOGAKU KK10 citations73
US4394073AJul 19, 1983
Compact wide angle lens
NIPPON KOGAKU KK18 citations73
US4705364ANov 10, 1987
Wide angle lens
NIPPON KOGAKU KK2 citations62
US4676607AJun 30, 1987
Behind stop lens
NIPPON KOGAKU KK6 citations62
US4653887AMar 31, 1987
Changeable magnification inverted galilean finder
NIPPON KOGAKU KK6 citations62
US4606615AAug 19, 1986
Behind stop lens
NIPPON KOGAKU KK6 citations62
US4457596AJul 3, 1984
Behind diaphragm lens
NIPPON KOGAKU KK5 citations62
NIKON CORP
6 patentsUS7554753B2Jun 30, 2009
Fish-eye lens and imaging device
NIKON CORP102 citations97
US5082360AJan 21, 1992
Compound zoom lens
NIKON CORP24 citations92
US4871242AOct 3, 1989
Soft-focus optical element
NIKON CORP9 citations70
US5050971ASep 24, 1991
Variable focal length photo-taking optical system
NIKON CORP2 citations63
US4836665AJun 6, 1989
Objective lens
NIKON CORP4 citations62
US4832470AMay 23, 1989
Inverted galilean telescope type viewfinder system capable of changing over the magnification
NIKON CORP3 citations62