Critical angle sensor

Curve analysis method in color photography

Cyclic colorimetry method and apparatus

Dampening system on an offset printing press with a device for r

Defect detection system

Densitometer head with fiber optics

Density measuring device

Detecting system

Detector device for mixing ratio for gasoline and alcohol or the

Detector optics for use in fabric inspection

Device and method for detecting changes in the refractive...

Device and method for optical center detection

Device and method for testing high reflectivity autostigmatic op

Device and process for testing a lens system

Device for comparing the refractive indices of an optical immers

Device for cyclically repeating a series of colorimetric analysi

Device for detecting alcoholic content

Device for detecting alcoholic content

Device for determination of layer thickness, or alternatively, m

Device for determining a refractive index in a large number...