Inventor
HISAMOTO KENJI
JP5 patents
Patents
5 patentsUS5537210AJul 16, 1996
Rotation detecting apparatus and scale having a multi helix diffraction grating for the same
CANON KK27 citations92
US5760392AJun 2, 1998
Scale for use with a displacement sensor
CANON KK28 citations91
US5742391AApr 21, 1998
Optical type sensor for use as an optical measuring head or optical pickup
CANON KK17 citations83
US6307284B1Oct 23, 2001
Positioning apparatus, information recording/reproducing apparatus, and inspection apparatus
CANON KK3 citations60
US7278150B2Oct 2, 2007
Disc-chucking mechanism having contractable/expandable O-ring for fixing disc
CANON KK5 citations59