Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings

Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings

US Patent 5280340 · Granted Jan 18, 1994

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Testing apparatus with read head holder having a gas jet pointing into a channel2013
Dynamic fringe phase detection for measurement of very small spacing2010
Thin film flying height calibration disk for calibrating flying height testers1998
Optically verified glide1998
Combined interferometer/ellipsometer for measuring small spacings1998
Combined interferometer/polarimeter1998
Tooling for holding a head gimbal assembly1997
Method and apparatus for rotary load/unload slider positioning1997
Imaging polarimeter detector for measurement of small spacings1997
Method and apparatus for measurement of roughness and hardness of a surface1996
Method and apparatus to calibrate intensity and determine fringe order for inter1995
Contoured head assembly for use in a cassette loaded recorder1989