Phase shifting interferometer and method for surface topography

Phase-locked loop laser gyroscope system

Phase-locked loop laser gyroscope system

Phase-modulated polarizing interferometer

Phase-sensitive interferometric mask-wafer alignment

Phase-shifting point diffraction interferometer

Phase-shifting point diffraction interferometer focus-aid enhanc

Phase-stepping fiber-optic projected fringe system for surface t

Photoacoustic method and apparatus for measuring intensity of el

Photodetector amplitude linearity

Photodetector and spectrometer using the same

Photodiode array

Photodiode array spectrometer

Photodiode array spectrometer

Photoelectric measuring apparatus for use in automatic analyzer

Photoelectric measuring system with integrated optical circuit i

Photoelectric position encoder using diffraction imagery

Photoelectric position indicator with a light-directing phase gr

Photoelectric position measuring system

Photoelectric position measuring system with integral optical ci