Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › High resolution optical encoder having a long detection stroke

High resolution optical encoder having a long detection stroke

US Patent 4948968 · Granted Aug 14, 1990

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Optical encoder diffraction gratings for eliminating diffracted light components1998
Position detector1993
Optical position-detecting apparatus1993
Position detecting apparatus generating periodic detection signals having equal 1993
Parallel light ray measuring apparatus1992
Optical encoder1991
Optical linear encoder with light quantity calabration1991
Linear encoder with plural detectors for use with one or more main scales1991
Optical linear encoder1990
Optical encoder with varying grating pitch1990
High resolution optical encoder having a long detection stroke1990