Optical hydrogen detector

Optical immersion probe incorporating a spherical lens

Optical immersion probe incorporating a spherical lens

Optical information measuring apparatus

Optical measurement device for trace liquid sample

Optical measurement system for determination of transmitted...

Optical measuring arrangement

Optical methods and systems for detecting a constituent in a...

Optical path structure for open path emissions sensing

Optical path structure for open path emissions sensing with...

Optical path structure for open path emissions sensing with...

Optical pH sensor

Optical pH sensor

Optical probe for fluid light transmission properties

Optical probe for fluid light transmission properties

Optical probes and probe systems for monitoring fluid flow...

Optical probes and probe systems for monitoring fluid flow...

Optical sensing based on wavelength modulation spectroscopy

Optical sensing based on whispering-gallery-mode microcavity

Optical sensing of fluid condition-method and apparatus