Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Apparatus for measuring length of visual line length, depth of anterior chamber, thickness of crystal lens, etc.

Apparatus for measuring length of visual line length, depth of anterior chamber, thickness of crystal lens, etc.

US Patent 5042938 · Granted Aug 27, 1991

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Imaging lens2009
Objective lens having two aspheric surfaces and a phase shifter and optical devi2007
Objective lens and optical device2003
Optical device2001
Optical device for recording or reading data to an optical disk2000
Optical pick-up, optical data recording apparatus and objective lens for optical1998
Head-up display and a combiner used to control diffraction of light including a 1995
Light wave range finder1991
Method and apparatus for finding range1990
Integrated-photocircuit interferometer1990
Light interferometer1990
Method and apparatus for setting a gap between first and second objects to a pre1989