Inventor
FETZER GUENTER
DE16 patents
⚠️ This page may combine multiple inventors who share the name “FETZER GUENTER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SICK OPTIK ELEKTRONIK ERWIN
12 patentsUS4346293AAug 24, 1982
Optical electronic distance sensor with a parallel beam of light and adjustable detector-emitter separation
SICK OPTIK ELEKTRONIK ERWIN74 citations95
US4310756AJan 12, 1982
Light grid arrangement using cyclically switched semiconductor light sources
SICK OPTIK ELEKTRONIK ERWIN45 citations92
US4603976AAug 5, 1986
Optical mark recognition apparatus
SICK OPTIK ELEKTRONIK ERWIN50 citations91
US4339660AJul 13, 1982
Reflection light barrier apparatus for recognizing both strongly and weakly reflecting objects
SICK OPTIK ELEKTRONIK ERWIN29 citations87
US4402609ASep 6, 1983
Light curtain apparatus
SICK OPTIK ELEKTRONIK ERWIN47 citations86
US4899041AFeb 6, 1990
Light sensor for detecting an object in a certain distance
SICK OPTIK ELEKTRONIK ERWIN22 citations80
US4464014AAug 7, 1984
Retroreflectors, especially for beam scanning applications and beam scanning apparatus incorporating such retroreflectors
SICK OPTIK ELEKTRONIK ERWIN21 citations80
US4875761AOct 24, 1989
Light curtain apparatus
SICK OPTIK ELEKTRONIK ERWIN20 citations73
US4851913AJul 25, 1989
Picture recording apparatus
SICK OPTIK ELEKTRONIK ERWIN8 citations73
US5080457AJan 14, 1992
Apparatus for generating a light curtain
SICK OPTIK ELEKTRONIK ERWIN12 citations69
US4798965AJan 17, 1989
Optical autocollimation measuring apparatus
SICK OPTIK ELEKTRONIK ERWIN5 citations59
US4794258ADec 27, 1988
Spectroanalytical gas measuring apparatus
SICK OPTIK ELEKTRONIK ERWIN7 citations57