Optical microphone/sensor

Optical module and apparatus having the same

Optical nonlinear cross-coupled interferometer and method utiliz

Optical notch filter for discriminating against coherent radiati

Optical null apparatus

Optical object detecting apparatus designed to selectively...

Optical object detection system incorporating fiber optic coupli

Optical observation apparatus

Optical path equalizer

Optical path sensor including a filter

Optical position detector having scale pattern spot-illuminated

Optical probe

Optical probe assembly for detecting the position of an object s

Optical proximity sensing optics

Optical pulse radar for an automotive vehicle

Optical quantum interference device and method of modulating lig

Optical radar apparatus

Optical radar apparatus

Optical radar apparatus

Optical radar apparatus and adjusting method therefor