Noise reduction techniques suitable for three-dimensional...

Non-contact measurement device

Non-imaging optical energy transfer system

Noncontact digitizing imaging system

Nonlinear optical ranging imager

Nonlinear optics microscope interferometer

Numismatic detector

Object detecting device

Object detecting system

Object detector of vehicle

Object distance detecting apparatus

Object distance measuring system for an optical instrument

Object information sensing apparatus, pointing device, and...

Object measuring device and method for use in the device

Object recognition apparatus designed to detect adhesion of...

Observation and aiming apparatus, particularly on a vehicle

Obstacle avoidance system for helicopters and other aircraft

Obstacle detecting apparatus which employs a laser

Obstacle detecting device for a vehicle

Ocean depth sounding from the air by laser beam