Light off-axis digital holographic detection device

The invention provides a digital holographic microscopic detection device based on a light off-axis two-step subtraction method. The detection device comprises a 620nm LED light source, a collimating and beam expanding system composed of a microscope and a pinhole diaphragm, a polarization element,...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG MU'AN, WU XUHUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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