Device for measuring the thickness of optical media stampers

Device for measuring the thickness of optical media stampers

Device for measuring the thickness (d) of optical media stampers comprising a turntable for rotating the stamper, the measuring device comprising at least one light source (1, 1') for emitting a light beam, which is directed onto a surface of the stamper (10), position sensitive detector means...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: POHL, PETER, HAUSBERGER, PETER
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:Device for measuring the thickness (d) of optical media stampers comprising a turntable for rotating the stamper, the measuring device comprising at least one light source (1, 1') for emitting a light beam, which is directed onto a surface of the stamper (10), position sensitive detector means (8, 8') for detecting the location of the light beam reflected from the stamper (10) surface.