Optical smoke detector operating in accordance with the...

Optical spectrometer

Optical spectroscopy apparatus and method for measurement of...

Optical stress generator and detector

Optical stress generator and detector

Optical system

Optical system

Optical system

Optical system for measurement of optical constant

Optical transmission calibration device and method for optical t

Optical transmittance apparatus for fluids

Optical turbidimeter with a lens tube

Optically-based method and apparatus for detecting and...

Opto-acoustic gas analyzer

Optoacoustic analyzer

Optoacoustic spectroscopy of condensed matter in bulk form

Oscillator element for photo acoustic detector

Outboard optical cable sensor system and method

Output control device for light detectors for photometers

Overmolded flowthrough turbidity sensor