D.C. component controlled fiber optic gyroscope

Defect detection and plotting system

Defect inspecting apparatus

Deformable wafer chuck

Defraction photoelectric position measuring system

Demodulation reference signal source

Densitometer

Depolarizer and spectroscope and polychromater

Depolarizer for light measuring instruments

Depolarizing plate and an optical apparatus using the same

Depth measurement of high aspect ratio structures

Detecting device using a semiconductor light source emitting at

Detection device

Detection of movement of a cyclic interference waveform, such as

Detection of subsurface defects by reflection interference

Detection system for ring laser gyro

Detector apparatus for detecing coherent monohromatic point-sour

Detector device to be used in atomic absorption spectroscopy

Detector for a spectrometer

Detector for wavelength of excimer laser