Apparatus for background absorption compensation in spectrophoto

Apparatus for calibrating an optical null spectrophotometer

Apparatus for combining light emanating from a linear scanning f

Apparatus for detecting and measuring fluorescence emission

Apparatus for detecting distance to an object

Apparatus for detecting the defects of a pattern with directiona

Apparatus for determining photoelectrically the position of at l

Apparatus for determining the path of a pulsed light beam

Apparatus for enhancing visibility in fog or underwater

Apparatus for examining gemstones and the like

Apparatus for flameless atomization of a sample for atomic absor

Apparatus for high accuracy distance and velocity...

Apparatus for illuminating liquid in a container for control pur

Apparatus for inspecting difficult to access objects

Apparatus for measuring a distance between two running vehicles

Apparatus for measuring a shape of road surface

Apparatus for measuring amount of displacement

Apparatus for measuring distances at many points

Apparatus for measuring distances by measuring time of travel of

Apparatus for measuring high frequency vibration, motion, or dis