Direct-to-digital holography and holovision

Dispersion photometer, in particular for the kinetic determinati

Displacement measuring method and apparatus using plural light b

Distance measuring device

Distributed sensor and method using coherence multiplexing of fi

Distributed sensor array and method using a pulsed signal source

Divided interferometer employing a single 3.times.3 coupler/spli

Double beam interferometer using refractive scanning method

Double-pass optical interferometer

DSP technique for photoacoustic spectroscopy (PAS) sample pulse

Dual beam Fourier spectrometer

Dual beam fourier spectrometer

Dual beam optical nulling interferometric spectrometer

Dual high stability interferometer

Dual homodyne detection system to measure asymmetric spectrum by

Dual laser system for extended heterodyne interferometry

Dual photoelastic modulator heterodyne interferometer

Dual surface interferometer

Dual wavelength holographic interferometry system and method

Dual-detector systems and methods having utility in...