Inventor
IWASAKI YOUICHI
US17 patents
⚠️ This page may combine multiple inventors who share the name “IWASAKI YOUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
15 patentsUS5031049AJul 9, 1991
Automatic object image follow-up device
CANON KK187 citations99
US6086267AJul 11, 2000
Quantity-of-light adjusting device using base and blade apertures for light quality control
CANON KK30 citations92
US5825545AOct 20, 1998
Image stabilizing device
CANON KK19 citations92
US5204749AApr 20, 1993
Automatic follow-up focus detecting device and automatic follow-up device
CANON KK39 citations92
US5109161AApr 28, 1992
Light emitter and optical system for a distance measuring device
CANON KK32 citations92
US4623237ANov 18, 1986
Automatic focusing device
CANON KK47 citations90
US6467975B1Oct 22, 2002
Quantity-of-light adjusting device and optical apparatus having the same
CANON KK11 citations73
US6350068B1Feb 26, 2002
Quantity-of-light adjusting device and optical apparatus having the same
CANON KK5 citations73
US5173807ADec 22, 1992
Optical instrument
CANON KK11 citations73
US4758082AJul 19, 1988
Distance detection apparatus
CANON KK19 citations73
US7611296B2Nov 3, 2009
Optical apparatus including diaphragm device
CANON KK3 citations63
US5446494AAug 29, 1995
Focus detecting system
CANON KK2 citations63
US5087935AFeb 11, 1992
Active external distance measuring system having an optical device in the light projection and light receiving paths to reduce parallax
CANON KK2 citations63
US7710661B2May 4, 2010
Optical apparatus
CANON KK3 citations62
US7551369B2Jun 23, 2009
Lens barrel and optical apparatus
CANON KK5 citations60